mammals
grrlscientist | February 19, 2007
Red-necked wallaby, Macropus rufogriseus frutica.
The photographer writes; Apparently wallabies are very, very cool with people. There was a paved path with gates at either end which wound through an area that had wallabies merrily hopping from one end to the other, casual as you please, munching on grass and jumping like little kangaroos.
Image: grendelkhan.
As long as you send images to me (and I hope it will be for forever), I shall continue to share them with my readership. My purpose for posting these images is to remind all of us of the grandeur of the natural world and that there…
grrlscientist | February 18, 2007
Wild-type mouse embryo 9.5 days post coitum. To assess the effect of targeted cubilin knockdown on blood vessel formation, embryos were immunolabeled with anti-PECAM-1, an endothelial cell marker. Cubilin-deficient embryos display developmental retardation and do not advance morphologically beyond the appearance of WT 8-8.5 dpc embryos.
Image: BMC Developmental Biology. [Archives].
As long as you send images to me (and I hope it will be for forever), I shall continue to share them with my readership. My purpose for posting these images is to remind all of us of the grandeur of the natural…
jlynch | January 24, 2007Darren Naish ("Tetrapod Zoology") has joined our merry band. Wander over, say "Hi", and learn about the evolution of vampires.
grrlscientist | January 2, 2007
White-tailed deer, Odocoileus virginianus, fawn
found sleeping next to a hiking trail at Foley Mountain
near Westport, Ontario.
Image: Bev Wigney.
Happy Holidays to everyone.
I am receiving so many gorgeous pictures from you, amigos bonitos, and I am overwhelmed by the beauty of these images and the creatures and places depicted. If you have a high-resolution digitized nature image (I prefer JPG format) that you'd like to share with your fellow readers, feel free to email it to me, along with information about the image and how you'd like it to be credited.
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tags: deer fawn, biology
jlynch | December 29, 2006
Over at Tetrapod Zoology, Darren Naish has a great series of photos of a golden eagle (Aquila chrysaetos) taking on a red fox (Vulpes vulpes) over a carcase.
jlynch | December 26, 2006
Note: Since I'm getting a lot of queries about this photo ... I don't own copyright for the photo and don't have the contact information for the source of the picture. I got the photo off the web and neglected to note the source. Googling "polar bear" should result in the original, but that may mean you have to browse many pages before you find it. Good luck!
The Washington Post is reporting that the Bush Administration wants to list polar bears as threatened under the Endangered Species Act,
"We've reviewed all the available data that leads us to believe the sea ice the polar bear depends…
grrlscientist | December 25, 2006
White-tailed buck, Odocoileus virginianus,
with velvety antlers photographed through the bedroom
window at the photographer's farm in eastern Ontario.
As you can see, they're not into mowing the lawn around
their house!
Image: Bev Wigney.
Happy Holidays to everyone.
I am receiving so many gorgeous pictures from you, amigos bonitos, and I am overwhelmed by the beauty of these images and the creatures and places depicted. If you have a high-resolution digitized nature image (I prefer JPG format) that you'd like to share with your fellow readers, feel free to email it to me, along with…
jlynch | December 22, 2006
With the recent bad news about the vaquita and the Yantzee river dolphin, it is good to have some positive news to report about cetaceans. This press release, from the Alfred Wegener Institute for Polar and Marine Research, reports
that four elusive Arnoux's Beaked Whales (Berardius arnuxii) have been spotted. As the release notes:
The Arnoux's Beaked Whales is one of the least known species of the Beaked Whales family (Ziphidae), itself poorly known in general. Arnoux's is one of the biggest species amongst beaked whales. The ones observed were probably 9 metre long. These deep-sea…
jlynch | December 21, 2006While some may be blogging about large extinct beasties, it's also worth remember the little ones. AP is reporting:
The discovery of fossilized remains of a mouse-like animal that lived at least 16 million years ago is the first hard evidence that New Zealand had its own indigenous land mammals, a researcher said Thursday.
New Zealand paleontologist Trevor Worthy and his team say they discovered two parts of a jaw and a femur (thighbone) -- about the size of a fingernail -- during digs in New Zealand's Central Otago region from 2002 until 2004. Their findings were published in the…
jlynch | December 20, 2006
National Geographic is reporting:
The recently declared extinction of the Chinese river dolphin has focused attention on the plight of another imperiled marine mammal--the world's smallest porpoise.
Found only in waters off Mexico, the vaquita [Phocoena sinus] may now be the most endangered of any whale or dolphin species, due to the animal's frequent and fatal entanglements in fishing nets, experts say.
The International Committee for the Recovery of the Vaquita (CIRVA), a conservation research group, estimates only 250 to 400 of the elusive marine mammals remain.
Those numbers, if…
jlynch | December 19, 2006From EurekaAlert:
Approximately 6 percent of human and chimp genes are unique to those species, report scientists from Indiana University Bloomington and three other institutions. The new estimate, reported in the inaugural issue of Public Library of Science ONE (Dec. 2006), takes into account something other measures of genetic difference do not -- the genes that aren't there.
That isn't to say the commonly reported 1.5 percent nucleotide-by-nucleotide difference between humans and chimps is wrong, said IUB computational biologist Matthew Hahn, who led the research. IUB postdoctoral…
jlynch | December 13, 2006
AP is reporting that the Yangtze River dolphin (Lipotes vexillifer) is "effectively extinct" following a 20 million year existence on this planet. A six week search yielded no sightings, down from thirteen sightings in 1997. It is believed that overfishing and sub-aquatic sonar pollution led to the extinction and that the species is the first cetacean to be rendered extinct by human action.
grrlscientist | December 1, 2006An orca, commonly known as a "killer whale", at San Diego's Sea World twice dragged its trainer underwater and attempted to pin him against the bottom of the enclosure, park officials said on Thursday. The show's finale called for the orca to shoot out of the water so Peters could dive off her nose.
Luckily, the trainer, 39-year-old Ken Peters, suffered only a broken foot and a tear to one leg of his wet suit.
Peters has a fractured metatarsal in his left foot but was in good spirits, said SeaWorld San Diego spokesman Dave Koontz. Other trainers were examining the whale, named Kasatka, to…
jlynch | November 30, 2006
I like this photo for some reason - seven-day-old stump-tailed or bear macaque (Macaca arctoides). Follow the link for pictures of adults and details of this endangered species.
Credit: AP-Photo.
grrlscientist | November 29, 2006
California sea lions, Prince William Sound, Alaska, 2000.
Image: Neil Moomey and Dan Beeler.
Tourists love to visit Fisherman's Wharf for the seafood, the view of San Francisco Bay, and also to watch the many dozens of playful sea lions that lounge by the water's edge, eating fish. However, in southern California, sea lions have begun attacking god-fearing American citizens. For example, this past June in Southern California, a sea lion charged several people on Manhattan Beach, eventually biting a man before escaping justice. Last spring in Berkeley, a woman was hospitalized after a sea…