zoology
laelaps | August 14, 2008Leave it to Faux (oops, I mean FOX) News to be the first to get on the cryptozoological bandwagon. According to the media outlet the body of Bigfoot has been revealed and is awaiting a battery of tests to confirm it's authenticity. It looks like a hoax to me, but here's the credulous "news" coverage;
That's right; the body is said to have come from Georgia, not any of the Pacific Northwest haunts normally associated with the legend. (The American south has their own tradition of Bigfoot tales, although Sasquatch is usually called the "Skunk Ape" there.) You can make a decent model anywhere,…
laelaps | August 11, 2008see more pwn and owned picturesGrowing up I spent a fair amount of time watching cheesy b-movies, mostly "revenge of nature" stuff. There was the walking commentary on the a-bomb known as Godzilla, the parable about dumping biomedical waste in Alligator, a mercury-created walking salami in The Prophecy, and many others, but the take home message was always "Don't mess with Nature." It's usually a rehash of the misunderstood Frankenstein mythos, offending "Mother Nature" instead of breaking the boundaries of "what God intended," and the atrocious film The Happening being only the latest…
grrlscientist | August 1, 2008tags: researchblogging.org, evolution, speciation, ring species, phylogeography, landscape genetics, crimson rosella, Platycercus elegans, parrots, birds, Australia
Crimson Rosella, Platycercus elegans.
Image: Australian Broadcasting Corporation.
One of the challenges facing those who believe that evolution cannot create new species is explaining the problem of "ring species." Ring species are a group of geographically connected populations that can interbreed with nearby populations, but cannot breed with those populations that exist at each end of the cline (figure A). These populations…
grrlscientist | July 15, 2008tags: researchblogging.org, speciation, adaptive radiation, , diversification, ecological opportunity, community assembly, species interactions, North American wood-warblers, Dendroica species, Daniel L. Rabosky
Yellow-rumped warbler, Dendroica coronata, After Hatch Year male.
Image: Dave Rintoul, KSU [larger view].
Several questions that motivate my own research and thinking are; How do species arise? Where does all this biodiversity that we see on Earth come from? Does speciation occur as a series of slow and gradual accumulated changes or is it an explosive process that occurs within a…
grrlscientist | July 2, 2008tags: researchblogging.org, global warming, climate variation, climate change, penguins, El Nino, marine zoning, P. Dee Boersma
Adélie penguins, Pygoscelis adeliae, and chicks.
(a) Adélie penguin chicks may get covered in snow during storms, but beneath the snow their down is warm and dry. (b) When rain falls, downy Adélie chicks can get wet and, when soaked, can become hypothermic and die.
Images: P. Dee Boersma.
According to an article that was just published in the journal BioScience, penguin populations are declining sharply due to the combined effects of overfishing and pollution…
grrlscientist | July 1, 2008tags: Underwater Astonishments, marine biology, evolution, streaming video
David Gallo shows jaw-dropping footage of amazing sea creatures, including a shape-shifting cuttlefish, a pair of fighting squid, and a mesmerizing gallery of bioluminescent fish that light up the blackest depths of the ocean. He focuses on the work of two scientists: Edith Widder at the Ocean Research & Conservation Association, and Roger Hanlon at the Marine Biological Lab. [6:01]
laelaps | June 23, 2008If you liked last week's post about the creation of The Whale at the AMNH you will definitely want to check out the new issue of Antennae: The Journal of Nature in Visual Culture. The theme for the present issue is "rogue taxidermy," and it includes pieces on strange amalgamations of stuffed animals, nature dioramas as art, and other related stories. If you're interested in the topic in general then you should also have a look at Windows on Nature, Stuffed Animals and Pickled Heads, and Evolution, too.
The main page for the magazine says that it's looking for submissions on a number of topics…
grrlscientist | June 17, 2008tags: evolution, beak and body size, Geospiza fortis, inbreeding, mating patterns, reproductive isolation, sexual imprinting
A family tree depicts the evolution of the 14 species of "Darwin's finches".
(The focus of this study, the Medium Ground Finch, Geospiza fortis, is denoted with a red dot).
[larger image].
I have always been fascinated by the process of speciation throughout my scientific career because speciation is the "engine" that generates biological diversity. But what are the evolutionary mechanisms that lead to speciation? We know that mate choice can be one important…
grrlscientist | June 2, 2008tags: Blue-throated hummingbird, Lampornis clemenciae, bats, Image of the Day
My good friend, Dave Rintoul, is on a much-deserved vacation camping in the
Chiricahuas and Gila Wilderness area at the moment, but he took a little time out from the fun and games to send me a couple images to share with you. This is the last of the two images he sent, but more are on the way, as soon as he reaches a computer or wifi site, so stay tuned!
Blue-throated hummingbird, Lampornis clemenciae,
feeds from flowers in Cave Creek Canyon in
the Chirichahua Mountains of Arizona and New Mexico.
Image: Dave…
grrlscientist | June 1, 2008tags: Mexican Long-tongued Bats, Choeronycteris mexicana, bats, Image of the Day
My good friend, Dave Rintoul, is on a much-deserved vacation camping in the
Chiricahuas and Gila Wilderness area at the moment, but he took a little time out from the fun and games to send me a couple images to share with you.
Two nectivorous Mexican Long-tongued Bats, Choeronycteris mexicana,
help themselves to nectar at a hummingbird feeder in Cave Creek Canyon in
the Chirichahua Mountains of Arizona and New Mexico.
Image: Dave Rintoul, 2008 [larger view].
grrlscientist | May 30, 2008tags: mountain cow, Baird's tapir, Tapirus bairdii, mammals, streaming video
This streaming video shows you a little bit about the mountain cow .. the tapir. In this case, the Baird's Tapir, Tapirus bairdii, the state animal of Belize, a country in Central America. This animal, which is endangered, is not a cow at all, but is related to horses and rhinoceros [1:47].
There is one mistake on this video. When a person discovers a new species they cannot name it after themselves -- that's a rule.
grrlscientist | May 20, 2008tags: online books, ornithology, birds, anatomyAvian Anatomy books
A reader of mine sent me the links to two more avian anatomy books that are available for download from FlipDrive. How long these two downloads will last is anyone's guess, though. But I know that my overseas readers, particularly those two of you who are working on your dissertations, will be interested in these. Both books are important additions to your bookshelf, for different reasons. One book is in full color and both books are more up-to-date than the Baumel book I made available to you for download earlier (However,…
grrlscientist | May 18, 2008tags: researchblogging.org, Aves, Psittaciformes, Pseudasturidae, parrots, Palaeogene, Eocene, Denmark
An artist's impression of the parrot-like bird, Mopsitta tanta, dating back 55 million years. The fossils indicate that parrots once flew wild over what is now Norway and Denmark.
Image: David Waterhouse [larger view].
A team of researchers, including a former postdoctoral colleague of mine, recently described fossils from two Lower Eocene parrot-like birds that were discovered in Denmark. The analysis of the fossils reveals that one of the ancient parrots, named Mopsitta tanta, is the…
grrlscientist | May 2, 2008tags: Rufous-crowned Roller, Coracias naevia, birds, Image of the Day
This is the last bird that I will be showing you by this photographer this week. More of John's images are waiting in the queue, and will appear next week.
Rufous-crowned Roller, Coracias naevia.
Image: John Del Rio. [larger view].
grrlscientist | April 25, 2008tags: David Attenborough, pika, Ochotonidae, behavior, streaming video
This streaming video shows David Attenborough bonding with a Pika, beginning by presenting it with a floral bouquet [3:20].
grrlscientist | April 23, 2008tags: researchblogging.org, evolution, speciation, Pod Mrcaru lizard, Podarcis sicula, reptiles
Pod Mrcaru lizard, Podarcis sicula.
Image: Anthony Herrel (University of Antwerp) [larger view]
Evolution has long been thought to occur slowly, due to small and gradual genetic changes that accumulate over millions of years until eventually, a new species arises. However, recent research has been calling this assumption into question. According to a study that was just published by an international team of scientists, dramatic physical changes can occur very rapidly -- on the order of just 30…
grrlscientist | April 22, 2008tags: Lucasberg, wasp, Hymenoptera, behavior, streaming video
This streaming video is a fascinating close-up interaction with a wasp by the photographer, who goes by the name Lucasberg. To get these amazing shots, he used a 180mm SLR macro lens. The photographer says the video is a little shakey because he was balancing on the handrail of his porch and could only use 1 tripod leg while filming. [1:06].
Face to face with a Wasp.
grrlscientist | April 14, 2008tags: Life in Cold Blood, amphibians, reptiles, David Attenborough, book review
When asked why there are so few books about amphibians and reptiles -- collectively referred to as "herps" -- published for the general public, David Attenborough responds by pointing out that "reptiles and amphibians are sometimes thought of as slow, dim-witted and primitive. In fact they can be lethally fast, spectacularly beautiful, surprisingly affectionate and extremely sophisticated." Even though this is true for many herps, it takes a lot of dedication and skill to show those less-known qualities to a…
grrlscientist | April 12, 2008tags: What Bugged the Dinosaurs?, dinosaurs, insects, disease, George Poinar, Roberta Poinar, book review
I grew up with a fondness for dinosaurs. Their unbelievable size, their peculiar shapes, and their undeniable absence from the world as I knew it were all sources of fascination. But never once did I think of the dinosaurs as being plagued by biting insects and other blood-sucking arthropods; mosquitoes, flies, ticks and mites were creatures that haunted camping trips, picnics and attics, not the majestic dinosaurs! But according to the new book, What Bugged the Dinosaurs? Insects,…
grrlscientist | April 2, 2008tags: migrating sandhill cranes, Grus canadensis, Platte River, birds, birding, bird watching
Sign about the Platte River in Nebraska.
Image: GrrlScientist, 2008. [wallpaper size].
This past weekend, Dave, Elizabeth and I drove from Manhattan, Kansas to the Platte River in next-door Nebraska to see the migrating sandhill cranes, Grus canadensis. These flocks of migratory cranes are a mixture of greater and lesser sandhill cranes along with some hybrids between these two subspecies, often referred to as intermediate sandhill cranes. (There also are sedentary subspecies of sandhill cranes,…