Showing posts with label Natural Science. Show all posts
Showing posts with label Natural Science. Show all posts

Sunday, February 23, 2014

Just Another Batty Monday

Hey ya'll

Mondays are generally a downer in most people's weekly routine but there are ways of coping with the dreaded Monday Blues. For me, nothing will beats surfing the interwebs and finding a visual goldmine such as this. 
Now this may look like a fairly unassuming hole in the ground, picturesque maybe but hardly anything to shout about... 
Until the photographer zooms in to reveal this...
...and this
...and THIS!!! 
The images above, that seem to be a vision straight out of any naturalist's dreams or chiroptophobe's nightmares is a one of a kind phenomenon that is only observable at the Monfort Bat Sanctuary on Samal Island, Philippines. There are some 5 openings leading to a network of underground caves that are home to an estimate of 1.8 million individuals of Rousette fruit bats (Rousettus amplexicaudatus). Other bat species that may be found in these subterranean networks are the Lesser False Vampire bat (Megaderm spasma) and flying foxes (pteropus sp.) making it the largest colony of its kind in the world since recorded history. Because they live in the tropics and food is abundant all year round the bats are continuously feeding and mating and breeding that overcrowding has begun to pose a serious problem. Using heat thermal cameras researchers have observed bats acting aggressively toward pups and at times, even cannibalizing them as young and adult bats alikejostle about for space in the tightly packed cavern. In an effort to elaviate the probme, management of the Monfort Bat Sanctuary have even proposed the construction of artificial caverns and networks that will enable the bats to roost more comfortably. The caves are maintained and managed by Ms Monfort, a local resident of Samal, who works with bat conservationists to protect the habitat of what is undoubtedly the single most impressive congregation of flying mammals in the world. 

Bats leaving the caves at dusk in search of food
Rare sighting of an albino bat, who is also a mother making a stark contrast among her brown and black peers.
And a closeup of the beautiful mother and her young
Photo credits: Josh Aggars @ Flickr
If you are interested in witnessing this or learning more feel free to contact the Monfort Bat Sanctuary directly at their Facebook Page: Monfort Bat Sanctuary @ Facebook 

Peace Out! :) 

Living the Rainbow: A Selection of Exotic Birds from Around the World pt. 1


Hey ya'll 

I'll be moving back to the Bukit Kinta Rainforest come March 1st 2014 so updates at the blog will foreseeable grow a lot slower. In between now and then, however, I would like to take the opportunity to clear up some of the things I've had stored away for the past few months or so. The following are a list of paintings I did of exotic birds from all over the world. The theme of inspiration for me at that time was the idea of the "Rainbow" and how so many birds seemed to embody it so effortlessly. 

The Scarlet Macaw (ara macao) is a large colorful parrot that is native to South America. They are predominantly red, yellow, and blue in color although certain individuals may ehixibit various patches of green. The range of the scarlet macaw is relatively large but deforestation and capture for the exotic bird trade has made populations of wild birds largely fragmented with small groups existed over large distances in various regions. 

Like many other macaws, they mate for life and nest in the cavities of hollowed trees. Birds are relatively long lived with some individuals recording a whopping 75-80 years of age in captivity. In the wild they may often bee found gathering in large flocks with other macaws and parrots at the banks of rivers partaking in a phenomenon that is known as "clay licking". The reason for this is thought to be because of the macaws largely herbivorous diet that may sometimes include the leaves or flowers of poisonous plants. The clay from the Amazon basin is believed to neutralize many of these toxins and make them safe for the birds to digest. The scarlet macaw is the national bird of Honduras. 


Also a member of the parrot family, the Eastern Rosella (Platycercus eximius) is a small, colorful bird that is native to the Southeastern portion of the Australian continent, and some parts of Tasmania. In recent decades, however, the Eastern Rosella has also become naturalized in many parts of New Zealand, typically North Island and Dunedin. Because of its brilliant coloration, the Eastern Rosella is sometimes kept as a pet bird although, they generally do not socialize as well with their human captors and other birds as other species of parrots. Like most parrots, the nest is made in an abandoned tree hollow and a clutch of five to six eggs may be laid. The yare one of the most colorful of the Australian parrots (barring the Rainbow Lorikeet, which is a fair contender) and may be seen readily in both rural and urban areas. 
This last Living Rainbow is not a parrot at all but a pheasant.  Probably the most underrated of the birds, the males of some pheasant species such as the handsome Golden Pheasant (Chrysolophus pictus) pictured here are some of the most spectacular members of the avian world. The Golden Pheasant is native to the mountainous areas of Western China but because of its popularity as a show bird, it has since established self sustaining feral populations in various parts of the world. The birds are about a meter long, with the tail accounting for most of its length and like many other galliforms, both sexes are highly sexually dimorphic with male birds exhibiting the more beautiful feathers. Golden pheasants are capable of flight but their rounded wings make them rather clumsy in the air. Despite their brilliant coloration, however, the birds are difficult to spot in their natural habitat and consequently, not much is known of the birds' behavior in the wild.  The bird is believed to have inspired early painters and artists with regards to the design of the Chinese Phoenix. 
As always, if you are interested in purchasing any of these images as high quality prints, feel free to browse around the print gallery at my deviantart accounthttp://cyrenization.deviantart.com

Peace Out

Sunday, February 9, 2014

Birdwing Butterflies prints now available on Deviantart!

Hey ya'll

The prints in my birdwing butterfly set have been really popular on deviantart as postcards or prints. Birdwing butterflies are probably one of my all time favorite of butterflies. Not only do their large size make them a breathtaking sight in any setting - both captive and wild - but their iridescent wings and uniqueness to the Southeast Asian region also give them an exotic touch that is quite unique to the species. 

The Southern Tailed Birdwing (Ornithoptera meridionalis) is the smallest of all the birdwing butterflies. Like the Queen Alexandra's birdwing butterfly (which is the largest butterfly in the world) the species was discovered by Walter Rothschild in Milne Bay Province, Papua New Guinea. The species is fairly widespread and may be found in several localities in southeast Papua New Guinea and the southern coast of Irian Jaya. Along with the Paradise birdwing (Ornithoptera paradisea) it is the only butterfly of the birdwing family whose wings are tailed.  Like several other species of birdwing butterflies, it is classified as "endangered" in the IUCN red list due to habitat loss in various parts of Papua new Guinea.  

Conservation initiatives that engage local communities have proven to be fairly successful and there are to date several villages in Papua New Guinea which farm the butterfly for conservation and commercial purposes. The specimens are incredibly valuable and may fetch prices as high as US$1000 per pair. Despite its desirability, collecting of the butterfly has little to negligible effect on its population size provided the original habitats are left undisturbed. The butterflies are remarkable in that they have an extremely small amount of wing area in relative to its large and bulky body. Male butterflies have hind wings that are severely reduced, tapering at the end into a pair of filamentous tails which are easily broken. The males of the species are thus rather clumsy and weak fliers and spend most of their day resting on the canopy layer of primary rainforests. The larva of the butterfly feed on the plants of the genus pararistolochia and incorporate its toxins into its defense system during its development and adult life.  

Ornithoptera priamus, or the common green birdwing, is a very widespread species of birdwing butterfly that is found in New Guinea, Moluccas, the Bismarck Archipelago, the Solomon Islands, and Northeast Australia.  Because of its sizeable range, the butterfly is extremely variable and is believed to have evolved multiple subspecies each exhibiting different markings, patterns, coloration, and forms. According to some experts, there are as many as 99 subspecies of Ornithoptera priamus butterflies although others would contend that some of these subspecies are to be treated as independent species altogether.  Most of the subspecies of Ornithoptera priamus feature brown and cream-patterned females and iridescent green males, although several subspecies such as Ornithoptera priamus urvilleanus, and Ornithoptera priamus miokensis have blue wings. Despite being an overall widespread and established species, some subspecies of the butterfly which are endemic to certain parts of the world are threatened by habitat destruction: primarily the clearing of primary forests (which the butterfly needs for its survival) for the palm oil trade. Many other subspecies, such as Ornithoptera aesacus may be seriously endangered in the wild but otherwise fairly commonly bred in captivity. 

Fun fact: the butterfly is named after Priam, the King of Troy during the Trojan War. 


IF you would like to see similar prints or show your support by purchasing them, do check out my profile on deviantart : http://cyrenization.deviantart.com

Friday, February 7, 2014

Flying Dragon @ Ulu Geroh, Gopeng, Malaysia.

Flying Dragon @ Ulu Geroh, Gopeng, Perak, Malaysia
http://cyrenization.deviantart.com



Several species of "flying dragons" may be observed in the forest around Ulu Geroh but these yellow ones were by far the most common. The "dragons" are part of a diverse group of lizards in the genus Draco that are endemic to Southeast Asia. While they are generally relatively unremarkable in appearance, these reptiles possess a most unique ability to extend folds of skin stretched out between its modified ribs to create a set of wings that enable them to glide from tree to tree. While not exactly capable of sustained flight, some species of "flying dragons" have been observed to be able to obtain lift in the course of their glides and a total gliding distance of up to 60 meters has been recorded, although the average is commonly about 8 meters or so.  Unlike the rest of their bodies - which are commonly drably colored to aid in camouflage - the wings of the dragons are usually brightly colored and patterned. Both male and female dragons also possess a colorful fold of skin under their chins called a dewlap that they can extend at will for display purposes.  Despite their small size, the dragons are highly territorial and males will defend their respective trees from the intrusion of outsiders. In Ulu Geroh, dragons can sometimes be seen dropping from the tops of trees, gliding in a circle, before landing at the base of the tree and slowly making their way back to the top on foot. They are insectivorous and feed on a variety of insects though from my observations it would seem that they are particularly partial to a variety of ants.

Thursday, February 6, 2014

Rajah Brooke Birdwing Plate

Natural History Style plate of a Male Rajah Brooke's Birdwing (Trogonoptera brookiana albescens) an artistic side project and work in progress of the insect life of Ulu Geroh
source: http://cyrenization.deviantart.com

Tuesday, June 4, 2013

Never Forget

Hey ya'll


What's really sad about the state of the world today is that people always complain about how ugly it is, or how corrupted... about how all beauty is lost, when the fact is that that couldn't be any more further than the truth! Beauty still exists. Despite all we've done to the planet, it's still there.  Want to try to find some beauty in your life? Try to be more observant to the things around you. 

Beauty is everywhere. The problem is most people these days don't bother to look. We expect beauty to be presented to us on a silver platter, or a silver screen, the way we are so used to being entertained by our computers, television sets, and smart phones, and so are equally quick to judge the "world" as an ugly place when its beauty is not readily visible to our eyes.

But I challenge you today, to take a walk around your neighborhood. When you've found a comfortable spot, bring yourself down to the level of the Earth. Now, I want you to observe a blade of grass. Pay attention to every detail of it, the way it grows out of its roots, the shade of purple in the smallest petals of the impossibly small flowers, the delicate wisps of fur that sometimes grow from the stalk. For a brief moment try to appreciate the complexity of it. Remind yourself that this is not "just a blade of grass" you are looking at, but a living thing. An organism with a complex system of cells and processes that contributes to the life giving oxygen that we all breathe.  And then try to look even further, observe the many creatures that frequent that blade of grass.

There are always ants of course, but if you look even closer you might see other things. Woodlice, perhaps, that can roll into perfect spheres when they are alarmed. Or maybe even the almost microscopic creatures. So small that they would seem like "insects" to the already diminutive insects!  Sit there for fifteen minutes or half an hour or so and take note of the various activities these animals partake in, so busy in their own tasks, or too small to may anything else any significance. I hope it won't take you too long before you realize that there is an entire world that is centered upon this blade of grass! Now take a step back and look all around you.  Take in every single blade of grass in the area, each containing its own secret little society. Take a step back further and think about this on the scale of the entire neighborhood. There are multiple "worlds" within our world, so close to us and yet so invisible from our own. Each blade of grass is its own community, each garden, a world, each patch of green, a universe! 


My friends, there is beauty everywhere (especially where there is a little Green!). One only need take the effort to look. 

Life History of the Monarch Butterfly (Danaus plexippus).
photo source: http://cyrenization.deviantart.com


Tuesday, April 23, 2013

Top 5 Insect Super Powers

Hey ya'll

In the first part of "Super Powered Insects", I talked about comic books characters that were inspired by the wonders of the entomological world! In the real world, however, many insects are similarly known to possess unique and amazing super-power like abilities! The following are a list of the top 5 insect super powers that I could come up with. 

1. Super Strength! 

A staple in any superhero comic universe: what would DC comics be without Superman, Marvel without The Incredible Hulk, and the natural world without... the industrious ant? Ants are one of the strongest creatures in the animal kingdom, capable of lifting several times their own body weight!!! The actual degree of super-strength varies between ant species, but on average an individual ant can lift anywhere between 10 - 50 times its total body weight. They can even do this upside down, while clinging on seemingly smooth glass-like surfaces! That's pretty amazing. Now it may seem surprising that such a small animal is capable of such feats of strength but the reason behind it all boils down to good old fashion physics and the concept of scaling. Because of their relatively small sizes, ants do not have much body mass. In comparison with this body mass, however, a large proportion of the ant's body is made up of small insect-muscles. Proportionately speaking this gives them the ability to lift and manipulate objects that are much larger and many times heavier than their own body weight. And its not just ants, but insects in general! Honey bees, for instance, have been observed to be able to lift up to 80 percent of their body weight in FLIGHT! More, when they're on the ground. It is not an absolute rule but a general one that the bigger the animals get (and the larger their body mass is) their ability to lift objects of equal to, or heavier than their own weight greatly decreases. Take elephants for example. Elephants can lift up to many tons but did you know they are quite incapable of lifting their own body weight? I guess this is one of those instances where small size, works to their advantage. 

2. Flight

Another fairly common staple power in comic books, flight is an ability most adult insects possess. These guys were virtually the first living things in the world to evolve the ability and subsequently, may be said to be one of the most accomplished as well. Of all the fliers of the insect world, however, it is arguable that none are perhaps as accomplished as the dragonfly! Dragonflies have been around for millions of years, and aside from a drastic decrease in size, have not seemed to have changed very much from their prehistoric ancestors. Consequently, they've also had ample time to perfect their flying skills making them quite literally, the masters of the air. Most dragonflies flap their wings at only 30 beats per second (this is very slow, in comparison to most insects like bees who flap their wings at about 300 times a second) but are still able to complete aerial feats of stunning magnitude! They are accomplished fliers, reaching speeds of up to 58 kilometers per hour (that's about 36 miles) and are more than capable of making sharp turns, sudden dives, and even flying backwards! The reason dragonflies can do this is because of their unique anatomy that enable them to use all four of their wings independently. When used in conjunction with their excellent vision, the dragonfly's mastery of flight makes it an excellent and accurate predator, capable of snatching insects up in mid-flight. 

3. Webbing

Bound 
Okay, so this is not exactly your typical super power! But what would this post be without a reference to spider man! Spider silk is one of the strongest organic substances known to man! The drag like silk of many spider webs (designed to stop flying insects in mid-flight) has often been equated to having the tensile strength of a high grade allow steel filament of the same diameter (purportedly a proportionately spun silken web would even have the strength to arrest a commercial airplane in mid-flight). And while spiders are arachnids and so, not insects (no need to get into a twist, I did not forget that fact!) they are not the only animals capable of producing webbing! The larvae of many insects, perhaps most notably those of butterflies and moths, are quite capable of excreting a similarly fibrous substance that is also known as silk. The silk produced by silkworms (bombyx mori) for instance are one of the strongest natural fibers known to man! In fact, silk garments dating back to 1782 was discovered in relatively durable condition in a wreck expedition in 1840! Silk. is also naturally resistant to most mineral acids. 

4. Radioresistance

Man destroys man. Insects inherit the earth.
I am sure that most of us are no stranger to the urban legend that cockroaches are the only animals capable of surviving a nuclear blast. Now, while it might more accurately be said that cockroaches are capable of surviving the aftermath of the blast (the actual blast would probably kill any roach caught in its vicinity by sheer explosive force a lone), I've got even better news for you: same goes to all insects! Now, I am no expert on radiation, but from what I have read up on the subject, this has something to do with the differing nature of vertebrate and invertebrate cells. Radiation is DEADLY to vertebrate animals and this is because our cells are constantly multiplying. Old cells die every second and are replaced by new cells through the process of mitosis (or something). Radiation affects these growing cells by causing them to act and multiply in ways that are different to their original function which would then eventually lead to mutation (the kind that gives people cancer. Not superpowers). Invertebrate cells, however, only multiply rapidly at specific times of the year. Typically, when they are about to undergo the process of molting. This means that of all the insects who survive the initial nuclear blast, those that are not close to the process of molting would be able to withstand the effects of radiation. In fact, some of these insects may be exposed so long, that their bodies begin to adapt to be genetically radioresistant. This positive trait is then passed on to future generations of insects born in the environment creating a strain of radioresistant insects! And this is no longer the stuff of science fiction or urban legend! Naturally radioresistan insects, worms, and plants have already been discovered in places like Minas Gerais, Brazil, that possess naturally high levels of radiation. 

5. Mind Control 

Take me to your leader! 
I saved the best for last. Mind control is often associated with super villains in the comic book genre. Even when heroes actually possess the capacity for it, they use it only sparingly. There is something entirely sinister about invading the thought processes of another creature and bending it against its will. It is therefore with no surprise that this category goes to the super villains of the insect world: the parasitic wasps. Parasitic wasps are quite literally the nightmares of the insect world. Imagine the worst fear you've ever experienced in your life and now multiple it by a hundred. If insects were capable of complex emotional thought, that would be the kind of year you would feel if you were a helpless larvae facing down the nightmarish gaze of a parasitic wasp. Like elegant but deadly assassins, the wasps employ a wide range of methods to subdue, and coerce their prey. The female of the jewel wasp (Ampulex compressa) for instance, preys on the common cockroach. She delivers two stings, both targeted at the roach's ganglion (that's the insect equivalent of a central nervous system). First, she does this to paralyze the front legs of her prey thus reducing mobility and inhibiting resistance. Next, she delivers a second sting at the direct spot of the roach's brain. This causes an immediate behavioral change in the roach. It becomes docile, it becomes compliant, and it will now follow the wasp willingly (as if being led on a leash) to her nest ,where she will proceed to deposit a single egg upon the roach's abdomen. When the egg hatches the larvae will feed on it, eventually living inside of it as an endoparasite. The larvae feeds only on the non-essential organs of the roach thus keeping the host alive until it is matured and ready to emerge as a fully grown wasp. Throughout the entire process, the roach is motionless. It is alive, but does not attempt to escape, seemingly content to rest in the burrow allowing the larvae to eat it alive. For all intents and purposes, the wasp's sting has turned it into a zombie. In another species of wasp, the larvae becomes a parasite of large spiders and upon maturity, will alter the spider's behavior to use its dying strength to spin a silken cocoon to protect the larva during its final stage of development. Talk about creepy. 

So that's it for my list of the top 5 insect super powers! Know any others I might have missed out, or wish to request something be added to the list? Send me a shout on any of my social networking pages (twitter, facebook, email) or leave a note in the comments below! 

Cheers,
Cyren. 

Wednesday, April 17, 2013

True Facts

Hey ya'll 

I've actually been a fan of this series for quite a bit now and figured that now is as good a time as any to share it out. If you're already a fan of "Wild Sex" by Dr. Carin Bondar (if you don't know what that is and wish to know more, click here ps. you won't be disappointed!) you will probably also love "True Facts", by ZeFrank. Here, I'll even give you a link to start of you off featuring one of my favorite animals: The Praying Mantis. 



Best watched when stoned, or on high.

Note: This blog does not endorse the throwing of stones at a person until death ensues. Or the use of drugs. 

pps. I am not a fourteen year old boy who happens to be a sexual deviant with a violent streak.
Cheers,
Cyren.

Sunday, April 14, 2013

Memoirs of a Light-Trapper: expeditions and experiments in light-trapping pt. 1


Hey ya'll

Chasing after butterflies and other flying insects with a net can be great fun during the day, but catching nocturnal insects is a totally different ball game altogether. It is, after all, not very practical for one to go traipsing about in the forests in pitch darkness while waving a net blindly around in hopes of accidentally catching something that flies by! As such many entomologists and lepidopterists have developed, over the years, a variety of techniques and methods that are quite reliable at attracting insects for the purposes of study or collection. The most efficient of all these, is probably light trapping. Light trapping is basically a method of attracting insects that involves the use of a light source (usually a mercury vapor bulb, or some other source that emits UV light). The light is often dispersed through the use of a white cloth (that can greatly increase the light's surface area) and functions as a veritable beacon that attracts moths, beetles, and any large number of flying insects to its surface. Think of a bug zapper, but on a larger scale. And minus the deadly electricity. Insects attached to the white cloth may then be studied in closer detail, photographed, or collected depending on its purpose.


Recently, I've had the opportunity of conducting one such expedition which took place in the form of a mini experiment. Two light traps were set with different bulbs, one emitting a specturm of UVA (orange/warm light), the other of UVB (white light). Through the course of the night we discovered that different insects were attracted to different spectrum of light. While the UVA bulb seemed to attract more insects on the initial stage, many of them eventually shifted their focus over to the UVB bulb where they proceeded to swarm and seethe in a writhing mass of antennae, legs, and wings. The diversity of insects which arrived was also, to say the least, quite astounding and we had (in addition to moths of just about every shape, size, and color) some very attractive looking beetles and cicadas. Below are some of the amazing insects that were attracted to our light traps that night.

These are some of the moths that were attracted to our light traps. Among all the insects that eventually came to the traps and stayed, I'd have to say that the moths were the most numerous. Most of them were small and brilliantly patterned, although we would eventually come across several sphingiids and saturniids as well. Geometriids were the most common and most of these came in various shades of yellow or green, many similarly patterned with geometrical map-like markings on both wings. 



We eventually nicknamed this moth "Hellboy" until a more concise definition
can be offered.




Aside from moths, the traps also attracted more than their fair share of cicadas! The large insects are clumsy fliers and, after slamming unceremoniously into the light bulbs and walls repeatedly, they would often crash onto the ground where they remained, seemingly in a state of stupor. They were so stunned by this I could even pick them up and place them side by side on my outstretched palm with little or no effect. 


Cicadas came in all shapes and sizes that night! We counted no less than 6 different species that were attracted to the traps. 


There were also an astounding diversity of beetles at our traps. Of all the insects, these were perhaps the worst! Beetles are clumsy fliers at best and when in a state of fright, have sharp claws that they can use to devastating effect. I had many bad experiences with beetles that fell down my color and proceeded to dig their claws into any portion of my skin they happened to come into contact with that the time! I shall take note to wear tighter fitting clothes when I try this again in the future! Most of the beetles weren't particularly remarkable, but we did find several of the long horn (Cerambycidae) and rhinoceros (Dynastidae) variety. Some of these, I ended up keeping, for virtue of their unique appearances! Second note to self: long horn beetles have fearsome jaws and can deliver quite a bite!!! 

The largest cerambycidae that was attracted to our traps that night. It measured several inches from head to tip of abdomen and eventually managed to bite hard enough to crack the flimsy plastic lid of the container.
Of all the other insects that were attracted, most were aletes, the winged generation of various ants and termite species whose identification simply goes beyond my capabilities. There was also a stick insect that somehow found its way there, and a rather opportunistic praying mantis. There really are a lot more pictures to go through, and I will upload them in the second part of this blog post when our photographer, Miss Joanne Tong, has sorted them out from her camera. Until then, Happy Monday.





Cheers, 

Cyren.

Thursday, April 11, 2013

Butterfly Spreading for Dum- Beginners!

Hey ya'll

The collecting of butterflies to be preserved as specimens has always been a very touch subject, even among lepidopterists! There are those who study butterflies who limit their observations only to live insects seen in the wild, and those who practice the added dimension of observing dead specimens in the lab. From a scientific point of view, the advantages that come from having preserved specimens far outweigh any possible moral outrage that might result from such a course of action. Dead butterflies, for one, do not flutter about so (thus damaging themselves!) meaning that they can be observed and categorized with greater depth and precision, and some butterflies are even difficult and near impossible to distinguish unless looked at under a microscope! Many skipper butterflies from the family hesperiidae are like this. Even for the average Joe collector, butterfly collecting can be a very insightful and rewarding experience! It is true that to obtain perfect specimens, butterflies do get killed in the process. But if it is any small consolation to those of you who might be sufficiently morally outraged by now: 

  1. No butterflies have ever been hunted to the brink of extinction! (You can blame deforestation and general environmental degradation for that!) 
  2. Butterflies are primarily instinctual creatures, they do not perceive emotions like pain or fear the way humans do
  3. Most collectors, experienced ones at least ,are very "humane" in their methods and either use killing jars or the refrigerator method to put the insects to "sleep" where they eventually slip away into death. 
For those of you who might be interested in collecting butterflies, however, spreading the insects can be a fairly daunting thought! Butterflies, unlike other flying insects like dragonflies, cicadas, or even grasshoppers, have very thin and fragile wings! Furthermore, the colors of butterfly wings are made out of millions upon millions of overlapping scales which rub off easily causing the butterfly to lose much of its color and grandeur! With all these difficulties in mind, I have thus decided to put together a step-by-step guide for the beginner on how to properly spread and preserve butterflies. 

Step 1:
First things first, you are going to need to pin your butterfly! It is often ideal to use entomological pins for this, but I understand that they are not always so readily accessible. I use tailor marking pins (the kind that is used to make marks on tailoring dummies) and have no problem with them except for some of the smaller specimens for which the pin may be a little too big. Anyway pins often come in various sizes anyway so you can always just adjust the size of the pins that you pick up from the store. Now, you want to put the pin as close to the center of the abdomen as possible and at a vertical angle. This is, obviously for aesthetic purposes, but also because it is arguably the strongest spot in the butterfly's body. The butterfly's body when straightened should form a 90 degree angle with the pin. Don't worry about it if you get this wrong on your first try and  I would advice removing and reinserting the pin too many times. Remember, each time you do that, the pin will leave a hole in the insect's body... too many little holes may eventually lead into some very serious, and irreversible damage to your specimen! 

Step 2:

Prepare a spreading board for the butterfly by placing two smaller boards of styrofoam on top of a larger board that will form the base. There should be a gap or a wedge between both styrofoam boards and this is where the butterfly's body will go. Make sure the boards are securely pinned down as you don't want them to shift about while the butterfly is being spread as this can cause damage to the wings, or cause unwanted changes in alignment. Once you've prepared the board sufficiently, place the butterfly's body inside the wedge, making sure the pin attached to it is securely stuck onto the main base. Make any necessary adjustments to ensure that the wings rest nicely and evenly on the boards on either side. If the butterfly's body is not secure within the groove (i.e it still moves about) you may hold it down by placing two pins on either side of it. Stick the pins on either side of the butterfly where the lower joint of the hindwing meets its body. This is the strongest spot and will prevent it from moving while you work on the wings. 

Step 3: 

The most crucial part of the process: spreading the butterfly's wings! Now as previously mentioned, butterfly wings are VERY fragile so you have to take special care not to damage them in the process. Different lepidopterists will have different methods of doing this, each involving different tools but I'm just going to tell you of the one I like the best. Using the flat end of the pin (that's the end OPPOSITE of the sharp bit), gently coax the wings into the desired position. Do this by slowly slipping the pin head underneath the upper edge of the forewing and gently tugging on the primary wing vein close to the insect's body which is the strongest structure of the wing and the least likely to tear. You may have to use your fingers, or a pair of forceps (depending on how confident you are about your control) to edge the wing into position but the same rule applies. Always work with the primary wing veins. When you have got the forewing in the desired position, gently lay down a piece of tracing paper (I use it as it is the most gentle) and pin it down around the edges of the wing. Depending on the species and the strength of the wings, you may have to use more than one or two pins. For the hindwing, slip the pin head on the lower edge of the wing, close to where the wing joint meets the body and gently push until the upper border of the hindwing rests somewhat covered by the fore wing. The goal is to ensure that the border of hindwing-forewing is set at a 90 degree angle from the butterfly's body. 

Step 4: 

Simple enough, repeat the above process for the other side. When you are done, you can place a ruler from one tip of the wing to another to see if you've got a butterfly that is "straightly" and "evenly" spread. Don't worry too much if you do not achieve this at your first try. I've got tons of botched up specimens this way and I can only say that practice makes perfect! Now is the time for the final touch ups. Using the pin heads, gently coax the antenna into desired position. You can place several more pins to keep it there, or use a separate strip of tracing paper. If the butterfly's body had contorted or moved slightly out of position during the spreading process, you may now use a pin to gently push it into position and leave the pin there until the specimen re-dries where it will stay in said position. To preserve specimens and prevent fungal growth or attack by ants/pests, I spray all butterflies with water-based insect poison. Don't be alarmed if you notice discoloration as the wings will return to normal once they have dried up.

Anyway I hope this guide has been sufficiently helpful with your butterfly collecting endeavors! I understand that other's may have different methods from mine and I daresay it's pretty much a case of whatever works best for the individual. I learnt most of what I know from more experienced friends and now really just wish t to pass this knowledge down. Just remember, practice makes perfect so do start with common, more readily accessible specimens as opposed to jumping straight into the swing of things with, say, a birdwing! 

Cheers,
Cyren. 

Tuesday, April 9, 2013

Keep Calm, they're only 17 year Cicadas!


Hey ya'll!!! 

I woke up this morning with the following item on my news feed "Largest Brood of 17 Year Cicadas to be expected in Spring!" it was shared by a friend and I instantly thought to myself WOW! What a magnificent sight they must be to behold! Evidently, though, the same opinion was not shared by said Facebook friend who included (along with her post) a status update lamenting that "it must be the end of the world!!!" My response to her was typically the same one I came across on this amazing website cicadamania.com :




Cicada nymph! Aren't they cute???
The 17 year cicada is not a locust (as they are sometimes confused for) but an insect belonging to the order of hemiptera, or "true bugs". They are of the genus "magicicada" which was named not because the insects are necessarily "magical" in any way, but because they seemed to miraculously appear out of thin air "just like magic" only once every 13- 17 years. In reality though, the sudden "disappearance" of cicadas for such a long period of time after the 4-6 weeks they are active may be attributed to the insect's prolonged developmental phase. Cicada nymphs (which essentially look like smaller versions of adult cicadas but without wings) live their entire lives under ground where they feed on the sap generated by the roots of large trees. 



transformation of the cicada
from mature nymph to
adult.
The nymphs must go through a process of incomplete metamorphosis whereby they undergo 5 molts (or instars) before they graduate as adult cicadas and the process can take anywhere between 13-17 years which accounts for the "sudden" disappearance of the insects for such a long period of time.  When they do emerge, however, they often do so simultaneously and in very large numbers! This is thought of to be some form of survival strategy known as predator satiation. Cicadas emerge in the thousands, sometimes even in the millions, which makes it impossible for any predator to completely kill them off! This means that there will be plenty of cicadas leftover to mate and lay eggs, thus ensuring the survival of the species. This phenomenon is unlike that of the locust swarm because while the locust swarm is literally a band of insects that move, breed, and feed as a large group, the cicada swarm is really just  a means to an end: ensuring enough adults survive long enough to pass on their genes to the next batch of insects. Indeed, such is the life cycle of most cicada species though the 17 year cicada is the only one to do so in such record numbers.

Other interesting facts about the 17 year cicada 
  • The 17 year Cicada is also known as the periodical cicada. This is because of their survival strategy of emerging in large swarms over the span of a certain period, as opposed to every year. 
  • There are a grand total of 7 species that make up the genus magicicada and 4 of these emerge on a 13 year basis. 
  • The 17 year cicada is perhaps most known for its ability to generate a loud, sometimes deafening sound (as is the case with all cicadas). Male cicadas do this to attract mates and do so by popping a set of muscles on their abdomen known as "tymbals", in and out rapidly.
  • Unlike locusts, cicadas do not defoliate entire plants. Adult cicadas possess piercing mouth parts that they use to suck the sweet sap from trees. Slender trees may be damaged by this process, but large stronger trees do fine. 
  • Last, but not least (this one is my favorite!) 17 year cicadas are affected by the massosporan fungus. An infection that is the equivalent of Cicada STD as it is spread through mating and causes the abdomen of adult cicadas to fall off! (Yikes!!!!)
You can read of such facts, and more at www.cicadamania.com

In conclusion, though the sights and sounds of an insect swarm of such gargantuan proportions can seem like a daunting, even intimidating prospect, when all is said and done... they only come once every 13-17 years! And aside from the loud sounds and the occasional clumsy cicada smack to the face: these insects are really quite harmless which totally begs the question: why can't we all just get along? 

Cheers,
Cyren

Sunday, April 7, 2013

Bug-on-Bug Violence: Wing Diversity and the evolutionary Arm's race


Hey ya'll!

Weaver ants brutalizing a caterpillar
It's a bug eat bug world, and in the insect kingdom, everything is almost certainly food for something else, as I was explicitly reminded on my way home from dinner! Pictured here are an army of red weaver ants (Oecophylla sp.) brutalizing an unidentified caterpillar. Now caterpillars are essentially the sitting ducks of the insect world. They're soft, and vulnerable, and they can't even move very quickly! Consequently, many of them have developed a variety of strategies and means through which they can defend themselves from predators (to read more about the amazing ways they do this, click here). 

Ants targeting the weak spots of a spined caterpillar
Nature, however, always finds a way and many predators have eventually learnt how to bypass the natural defenses of these animals. Take this case, for example: The caterpillar in mention is what I believe to be the larvae of the Tawny coster (acraea terpsicore/violae), a brightly colored butterfly with leathery wings and a lazy flight. Under normal circumstances, the caterpillars of these butterflies are rather bold insects. They possess a unique chemical defense system, sequestered from the mildly poisonous leaves of the passiflora vines on which they feed on, that make them severely distasteful to birds and most vertebrate predators. Invertebrate predators, on the other hand, aren't so choosy about taste and so to protect themselves from such animals, the caterpillars have evolved a series of sharp and rigid spines that adorn the length of their entire bodies. These spines are not poisonous and do not break easily and it is speculated that what they do, is create (quite literally!) and arm's length of space between any potential predator and the caterpillar's vulnerable body.

When attacking armored prey, like beetles, many ants have
learnt to target the joints, the weak spots in the larger
insect's armor. Here they can inject their poison to
eventually overcome their prey.
These ants in question, however, seemed to have figured out a way to bypass all of that. By literally clipping off the spines bit by bit, the same way a gardener might trim the hedge, the ants whittle away at the caterpillar's defenses until they are able to expose the soft, succulent flesh beneath. And this is not something new. Similar behavior have been observed in the infamous Army ants (Eciton sp.) of Southern America. In fact, many of ants have even taken things one step further and are similarly known to exploit the weak points in the armor of armored invertebrates such as beetles and scorpions. Though the process can take up quite a significant bit of time and energy, the ants will often persevere until the defenses of the prey are completely whittled away. Protein can be very rare and is subsequently a very valuable natural resource in the insect world. Any amount of it (however small) is clearly worth every bit of effort!

The brightly colored, and patterned wings of many
butterflies are thought to function as biological
billboards that provide various signals to other butterflies
as well as animals of other species.
And so it has always been, the evolutionary arms race that began when the first invertebrate crawled out of the ocean, and so it continues to this very day. The need to feed and breed, coupled with the drive to escaped predation has resulted in the diversity and magnificence of insects we have come to know of today. Every insect's uniqueness, every part of it that stands out (aside from the basic anatomy) evolved, often for specific purposes that would aid its survival as an individual and as a species. Take the structure of insect wings for example. The wings of insects are probably one of the most diverse flight structures in the natural world as we know it and are believed to have their origin in gill-like structures possessed by some primitive invertebrates. When mosses and plants began to creep out of the ocean to colonize the shores, invertebrates were soon to follow. Not all of them, however, lost these gill like structures and many continued to retain these flap-like projections as a form of vestigial growth.


The frontal pair of a beetle's wings have evolved into
a virtually impenetrable,waterproof armor known as an
elytra and protects the more fragile set of flight wings
as well as the beetle's body from attack.
But as more invertebrates continued to move to land and evolved into insects, their predators were also quick to follow. It eventually became imperative once again, that insects evolved new strategies to ensure their survival and that of their species. Climbing, the unique ability of insects to scale most vertical surfaces, was believed to have evolved as such a strategy. But the most amazing of all, is perhaps the evolution of the insect wing. The flap-like projections that some insects retained as vestigial growths now developed a new purpose: it gave them the ability to glide! Gliding became an invaluable means of escape as, aside from the insects who retained this ability, there were NO flying predators at the time. This, more than anything else, led to the streamlining of the gliding process and the correspondent anatomical part to give rise to the very first insect wing making the insect quite literally, the first animal capable of sustained flight! The continued benefit of flight propelled the continued evolution of the wing resulting in the sophistication and diversity of wing design witnessed in insects today.
Some pictures of other insect wings, to give you a better idea.
Dragonfly wings have evolved to be strong and resilient structures. They are
waterproof and can function with great dexterity and independence of each other
allowing the dragonfly to be one of the most accomplished of aerial predators.
Cicada wings
Grasshopper wings
Leafhopper wings
But of course, the evolutionary arms race in insects is not limited to its wings. In fact, every part of an insect's anatomy was originally geared towards helping the species survive each other. The barbed stings of bees for instance, was thought to have evolved as a defense mechanism against invertebrate predators. Interestingly enough, bees do not die when they sting invertebrate such as hornets and moths, which frequently invade their hives. The eventual introduction of vertebrate predators into the mix only branched this evolution out further. The following illustrated chart might give you an idea as to how this might have taken place.  


This, combined with the fact that insects have been around far longer than any other living creature on the planet, and because of their fast reproduction rates, has lead insects to diversify to the point that they are quite literally one of the most successful animals on the planet! Try to remember that the next time you witness an ant carving up a caterpillar, or stop to appreciate the remarkable patterns on the wings of a butterfly. You might very well be witnessing the result and progress of the evolutionary arms race!

Cheers,
Cyren