zoology
grrlscientist | July 9, 2007tags: snow leopard, kitten, Image of the Day
Askai, a 10-week-old snow leopard kitten, Panthera uncia, hisses at photographers during his first public appearance at Berlin Zoo, Germany.
Image: BBC News.
grrlscientist | July 8, 2007tags: recurve-billed bushbird, Clytoctantes alixii, ornithology, birds, avian, endangered species
This male Recurve-billed Bushbird, Clytoctantes alixii, was recently photographed by ProAves staff, Adriana Tovar and Luis Eduardo Uruena. This is the first time this globally endangered species has been captured on film. [larger].
[listen to this species' song]
For the first time ever, an elusive recurve-billed bushbird, Clytoctantes alixii, has been photographed in the wild. The bird, recently rediscovered by scientists in Colombia a Colombian ornithologist named Oscar Laverde after a 40-…
grrlscientist | June 27, 2007tags: Icadyptes salasi, giant penguin, ornithology, birds, avian
Two fossils recently discovered in Peru reveal that early penguins responded differently to natural climate change than scientists would have predicted. The larger skull, Icadyptes salasi (top), would have been fearsome to encounter because this penguin stood over five feet tall, and had a seven-inch beak, and is one of the largest penguins ever described. Compare this new penguin species to the smaller skull (below), which is from the modern-day Peruvian (Humboldt) penguin, Spheniscus humboldti.
Image: PNAS / Daniel Ksepka…
grrlscientist | June 21, 2007tags: cancer, liposarcoma, trabectedin, Ecteinascidia turbinata, sea squirt
A toxin derived from a humble sea squirt, Ecteinascidia turbinata (pictured, right), shows great promise as an anti-cancer drug. This toxin, known as trabectedin (ecteinascidinin-743), shrinks and even completely removes cancerous tumors in more than half of the patients treated with it, according to a new study. The patients treated with this drug suffered from a specific type of liposarcoma cancer, which is associated with chromosomal mutations. Liposarcomas are a rare but malignant tumor that grow in the fat cells…
grrlscientist | June 20, 2007tags: researchblogging.org, superb starling, Spreo superbus, Lamprotornis superbus, birds, behavior, infidelity
Superb starling, Lamprotornis (Spreo) superbus.
These small birds are commonly found in open woodlands and savannahs throughout Northeast Africa.
Image: Hogle Zoo, Utah.
While it is widely known that males of many species seek out extra-pair copulations in order to produce as many offspring as possible, the reasons for female "infidelity" are much more complex. For example, a study was recently published that showed how a bird species uses sexual politics to ensure maximal…
grrlscientist | June 17, 2007tags: Junkin's warbler, birds, ornithology, DNA technology
An ornithologist prepares to band a mysterious Junkin's warbler.
Image: Sandy Junkin.
With all the skilled birders and ornithologists in North America, it is truly remarkable to find a bird that cannot be identified, especially when that bird was captured in a mist net. After all, when you have a bird in your hand, you have the opportunity to examine its field marks closely.
Enter Dave Junkin. Junkin was the director of Buffalo Audubon's Beaver Meadow Wildlife Sanctuary in Java, and even after his retirement, he is an expert bird…
grrlscientist | June 15, 2007tags: researchblogging.org, global warming, climate change, ornithology, birds, avian biodiversity, habitat destruction
White-crested hornbill, Tropicranus albocristatus, also confined to African rainforests, may see more than half of its geographic range lost by 2100.
Image: Walter Jetz, UCSD. [larger]
Thanks to the combined effects of global warming and habitat destruction, bird populations will experience significant declines and extinctions over the next century, according to a study conducted by ecologists at the University of California, San Diego and Princeton University. This study…
grrlscientist | June 13, 2007tags: researchblogging.org, dinosaur, bird, fossil, Gigantoraptor erlianensis, China
An artist's painting of the newly discovered Gigantoraptor dinosaur, depicted with other smaller dinosaurs. Fossilized bones uncovered in the Erlian Basin of northern China's Inner Mongolia region show the Gigantoraptor erlianensis was about 26 feet in length and weighed 3,000 pounds. The discovery of the giant, birdlike dinosaur indicates a more complicated evolutionary process for birds than originally thought.
Image: Institute of Vertebrate Paleontology & Paleoanthropology (Beijing, China) [larger]…
grrlscientist | June 7, 2007tags: researchblogging.org, archaeopteryx, dinosaurs, mammals, fossils
Archaeopteryx fossil showing the distinctive head-back death pose of many articulated fossilized birds, dinosaurs and early mammals. Archaeopteryx is an ancient feathered dinosaur. This specimen is at the Humboldt Museum, Berlin. The skull is approximately two inches long.
If you've looked at the articulated 150-million-year-old Archaeopteryx fossils, you probably have noticed that they all have a weirdly similar pose; their heads are thrown over their backs, mouths open and tail curved upwards. Scientists have been…
grrlscientist | May 19, 2007tags: Trypanosoma evansi, parasite, wasting disease, Tabanus, Australia, conservation
A PhD student from James Cook University in Australia hopes her research will help protect Australian wildlife from an exotic wasting disease that could devastate kangaroos and other endemic marsupials.
Kirsty Van Hennekeler has spent four years studying Surra, the disease caused by a parasite that lives in mammalian blood. This parasite, Trypanosoma evansi, causes fever, weakness, and lethargy in its victims and can lead to weight loss, anaemia and even death of infected animals. It is thought this parasite…
grrlscientist | May 18, 2007tags: parrot, Lories, Lorikeet, Loriinae, Loriidae, Rimatara Lorikeet, Kuhl's Lory, Vini kuhlii, conservation, ornithology, South Pacific Islands
Endangered Rimatara lorikeet or Kuhl's lory, Vini kuhlii, feeding on nectar.
Image: G McCormack, Cook Islands Natural Heritage Trust (CINHT). [larger image]
My life's passion is the birds of the South Pacific, particularly the Loriinae, which are parrots commonly known as the lories and lorikeets. I study them professionally and I have lived with them and bred them for most of my life. So it was exciting to me when I learned that one of my…
grrlscientist | May 17, 2007tags: Antarctica, Weddell Sea, new species, ANDEEP, zoology
The scientists said an "astonishingly diverse" collection of isopods had been discovered. This young male isopod represents one of 674 isopod species found.
Image: W. Brokeland. [larger image]
According to a paper that was recently published, scientists have found more than 700 new species of marine creatures in seas surrounding Antarctica -- seas once thought too hostile to sustain such rich biodiversity. Fabulous creatures, such as carnivorous sponges, free-swimming worms, crustaceans and molluscs, were collected.
The…
grrlscientist | May 16, 2007tags: turtle, Cantor's giant softshell turtle, Pelochelys cantorii, endangered species, herpetology, reptiles
This photo released by Conservation International, shows two rare Cantor's giant
softshell turtles, Pelochelys cantorii, thought to be on the brink of extinction.
Conservation International and the World Wildlife Fund announced today, 16 May 2007,
that scientists discovered the rare species in Cambodia in a former stronghold of the
Khmer Rouge in March.
A rare soft-shell turtle has been found in Cambodia's Mekong River, raising hopes that the threatened species can be saved from…
grrlscientist | May 15, 2007tags: hummingbird, Gorgeted Puffleg, Eriocnemis Isabellaea, endangered species, ornithology, birds
A new species of hummingbird, the Gorgeted Puffleg, Eriocnemis Isabellaea, has been discovered in the Serrania del Pinche mountains of southwest Colombia.
[much larger image]
According to ornithologists, the Gorgeted Puffleg has been discovered living in the cloud forests of southwestern Colombia. Despite its recent discovery, this stunning rare hummingbird that has violet blue plumage and iridescent green on its throat, is already endangered by the environmentally damaging illegal drugs…
grrlscientist | May 4, 2007tags: evolution, birds, orioles, Icterus, research
"Oriole."
Image appears here with the kind permission of the photographer, Pamela Wells.
[Larger image].
I often think about differences in morphological and behavioral traits in closely-related species and wonder whether the speed and character of changes in these traits reveal anything about the evolutionary relationships between taxa. For example, in birds, both visual and auditory cues, such as plumage and song patterns, are essential for identifying members of their own species. However, these phenomena have rarely been systematically…
grrlscientist | April 25, 2007tags: Solomon Islands Frogmouth, Rigidipenna inexpectatus, Podargus ocellatus inexpectatus, birds, birding, ornithology
Gone are the days when animals were classified to taxon based solely on bone structure (osteology), body structure (morphometrics) or behavior (ethology), or some combination of these characters. Currently, scientists have a suite of powerful tools for classifying creatures to taxon, and analyses using a combination of these methods is allowing us to come to a deeper understanding of all animal life. As a result of using these techniques, a new species of bird has been…
grrlscientist | April 13, 2007tags: researchblogging.org, Tyrannosaurus rex, dinosaurs, birds, fossils
Repeated analysis of proteins from a fossilized Tyrannosaurus rex reveal new evidence of a link between dinosaurs and birds: Of the seven reconstructed protein sequences, three were closely related to chickens.
Image: NYTimes
It was once thought impossible to obtain actual soft tissue, such as proteins, from fossils, but the impossible has happened and now, two research teams who published reports in this week's Science describe their findings: the closest relative to the fearsome Tyrannosaurus rex is .. a chicken.…
grrlscientist | March 22, 2007tags: Long-whiskered Owlet, Xenoglaux loweryi, birds, birding, ornithology
Long-whiskered Owlet, Xenoglaux loweryi.
The strange and extremely rare Long-whiskered Owlet, Xenoglaux loweryi, has been seen in the wild for the first time on a private conservation area in Northern Peru by researchers. The bird, a species that wasn't even discovered until 1976, and until now was only known from a few specimens captured in nets after dark, was seen in the Area de Conservación Privada de Abra Patricia -- Alto Nieva. This sighting is considered a holy grail of South American ornithology and has not…
grrlscientist | March 18, 2007
The island clouded leopard, Neofelis diardi on the prowl.
Image: WWF.
According to genetic research, clouded leopards found on Sumatra and Borneo are a new species. Until now it had been thought they belonged to the same species that is found on mainland southeast Asia. But genetic data indicate that the two species diverged 1.4 million years ago, and have remained separate since.
"Genetic research results clearly indicate that the clouded leopards of Borneo should be considered a separate species," said Stephen O'Brien, head of the Institute's Laboratory of Genomic Diversity.
"DNA tests…
grrlscientist | March 16, 2007You might remember that last week, I wrote about the colossal squid, Mesonychoteuthis hamiltoni, that had been captured in Antarctica's Ross Sea in early February. This squid, which is three times the length of the average bus (see graphic, left; courtesy of BBC News), was frozen and transported to the national museum, Te Papa Tongarewa in Wellington, New Zealand.
Unfortunately for squid afficionados, any research on this specimen will probably be one year away because the museum's "wet" collections are being rennovated to accomodate the large animal. Only after there is an approriate…