insects
awild | January 27, 2010...they're something far more interesting.
Ten points to the first person who identifies the orange balls. These were photographed inside a termite nest in southern Illinois last fall.
grrlscientist | January 26, 2010tags: evolutionary biology, behavioral ecology, biochemistry, biophysics, magnetoreception, photoreceptor, cryptochromes, geomagnetic fields, butterflies, Monarch Butterfly, Danaus plexippus, birds, migration, signal transduction, researchblogging.org,peer-reviewed research, peer-reviewed paper
Every autumn, millions of monarch butterflies, Danaus plexippus, each weighing less than one gram (one US penny weighs 2.5 grams), migrate nearly 4000 kilometers (3000 miles) between their summer breeding grounds in the United States and their wintering areas either in southern California or in the…
edyong | January 21, 2010
The partnerships between flowering plants and the animals that pollinate them are some of the most familiar in the natural world. The active nature of animals typically casts the plants as the passive partners in this alliance, but in reality, they're just as involved. That becomes particularly apparent when the animals renege on their partnership.
Nicotinia attenuata, a type of wild US tobacco, is usually pollinated by hawkmoths. To lure them in, it opens its flowers at night and releases alluring chemicals. But pollinating hawkmoths often lay their eggs on the plants they visit and the…
edyong | January 18, 2010The mighty insect colonies of ants, termites and bees have been described as superorganisms. Through the concerted action of many bodies working towards a common goal, they can achieve great feats of architecture, agriculture and warfare that individual insects cannot.
That's more than just an evocative metaphor. Chen Hou from Arizona State University has found that the same mathematical principles govern the lives of insect colonies and individual animals. You could predict how quickly an individual insect grows or burn food, how much effort it puts into reproduction and how long it lives…
awild | January 14, 2010
Arilus cristatus, the wheel bug
Photo details: (top, middle) Canon MP-E 65mm 1-5x macro lens on a Canon EOS 50D.
ISO 100, f/13, 1/160 sec, diffused twin flash
(bottom) Canon 100mm f2.8 macro lens on a Canon EOS 50D.
ISO 200, f/11, 1/160 sec, diffuse overhead flash
awild | January 9, 2010
Benoit Guenard notes that 2009 was a busy year for new ant genera
The NCSU insect blog has moved to a new URL: http://blog.insectmuseum.org/
Bug Girl blogs snow fleas
This is an amazing wasp
xkcd shows the difference between movie science and real science
Also, this:
grrlscientist | January 5, 2010tags: biology, zoology, insects, Dragonfly, Wandering Glider, Globe Skimmer, Pantala flavescens, migration, Maldives, India, TEDTalks, TED Talks, Charles Anderson, streaming video
While living and working as a marine biologist in Maldives, Charles Anderson noticed sudden explosions of dragonflies at certain times of year. He explains how he carefully tracked the path of a plain, little dragonfly called the Globe Skimmer, Pantala flavescens, only to discover that it had the longest migratory journey of any insect in the world.
TEDTalks is a daily video podcast of the best talks and…
edyong | January 5, 2010
If you looked at the penis of a Drosophila fly under a microscope (for reasons best known only to yourself), you'd see an array of wince-inducing hooks and spines. These spines are present in all Drosophila and they're so varied that a trained biologist could use them to identify the species of the owner.
What's the purpose of these spines? Are they intended to actually wound the female during mating? Do they help the male fly to scrape out the sperm of his rivals? Do they actually pierce the walls of the female's genital tract, allowing the male to bypass any barriers to his sperm, as…
grrlscientist | January 4, 2010tags: researchblogging.org, new species, insects, American cockroach, Periplaneta americana, DNA barcoding, Brenda Tan, Matt Cost, Mark Stoeckle, Rockefeller University, American Museum of Natural History, AMNH
Mystery cockroach found in NYC apartment.
Image: Brenda Tan and Matt Cost.
Moving overseas has been a challenge, but worst of all for me has been the fact that my writing has suffered. I still read scientific papers and science news stories, but have been unable to find the time necessary to write these stories for you. Hopefully, my life is returning to some semblance of…
awild | December 28, 2009Earlier I listed my pick of the best insect photos of the year taken by other photographers. Now it's my turn. In 2009, I snapped 8000 exposures to produce 805 processed, saleable images of live insects. Below are my favorites.
A parasitic Pseudacteon fly targets a fire ant in Argentina
Male size variation in Onthophagus dung beetles
Aphaenogaster ants are tempted by the elaiosome of a bloodroot seed, Illinois
Eastern treehole mosquito larvae, Illinois
Trophallaxis in wood ants, Wisconsin
Face to face with a giant water bug, Illinois
male and female northern walking sticks,…
edyong | December 24, 2009This is an updated version of the first post I wrote this year. The scientists in question were looking at ways of recruiting bacteria in the fight against mosquito-borne diseases, such as dengue fever. They've just published new results that expand on their earlier experiments.
Mosquitoes are incredibly successful parasites and cause millions of human deaths every year through the infections they spread. But they are no match for the most successful parasite of all - a bacterium called Wolbachia. It infects around 60% of the world's insect species and it could be our newest recruit in the…
grrlscientist | December 23, 2009tags: invertebrates, comedy, humor, bentekr, animation, streaming video
This sweet video shows you how the spider and the fly celebrated Christmas this year.
awild | December 23, 2009In 2009 the world's macrophotographers- both amateur and professional- continued to capture breathtaking images of the arthropod microscape. I've been bookmarking insect photos from around the web that catch my eye, and after spending some time this week reviewing the candidates I've selected nine favorites. Wow. These are the images from fellow photographers that most captured my imagination over the past year.
Together, by Jan Zajc
untitled, by Bonali Giuseppe
Frog beetle ready for take-off, by Alfred Preuss
Ants climbing tree, by Uros Kotnik
Water striders, by Clay Bolt
Eyes…
awild | December 15, 2009Agapostemon sp. - Halictidae
Fairport, NY, USA
Photo details: Canon MP-E 65mm 1-5x macro lens on a Canon EOS 20D.
ISO 100, f/13, 1/250 sec, twin flash diffused through tracing paper
awild | December 5, 2009
Pogonomyrmex micans, stack of 23 images using CombineZP. Click for large file.
I don't ordinarily do product endorsements on the blog, but here's one: the image-stacking software CombineZP. I recommend it for two reasons. First, CombineZP produces smoother, more artifact-free images than the very expensive competition. Second, CombineZP is freeware. Alan Hadley, a British arthropod enthusiast, wrote it in his spare time.
Good. And free. Not much to argue with there.
CombineZP and similar products are designed to counter a major challenge of macrophotography, the narrow depth of…
awild | November 24, 2009
Belostoma sp. water bug, Illinois
I'm so used to taking photos of fast-moving ants and beetles that a sedentary insect comes as something of a relief. Instead, the challenge with this Belostoma giant water bug was lighting the shot.
Aquariums are prone to reflections and dust on the glass. I arranged a diffused flash above the tank, positioned behind the glass so as not to leave a reflection by illuminating the camera.
Photo details: Canon 100mm f2.8 macro lens on a Canon EOS 50D
ISO 100, f/8.0, 1/200 sec, diffused overhead flash
grrlscientist | November 23, 2009tags: insects, comedy, humor, bentekr, animation, streaming video
This video shows honeybees at work, and suddenly discovering a pot of honey on a picnic table. What do they do? This video follows the secret life of these bees.