Search Results for: Vertebrates
Skip to results
1,545 results
1,545 results for: Vertebrates
- Animals
Proxy Vampire: Spider eats blood by catching mosquitoes
Researchers studying food preferences among spiders report finding the first one with a taste for vertebrate blood.
-
Macho Makeover: Fish rapidly ascend social ladder
Some male fish can upgrade their social status, and their appearance, in a matter of minutes.
- Paleontology
Caribbean Extinctions: Climate change probably wasn’t the culprit
Remains of extinct sloths unearthed in Cuba and Haiti indicate that the creatures persisted in Caribbean enclaves until about 4,200 years ago, a finding that almost absolves climate change following the last ice age as a cause for the die-offs.
- Paleontology
Mmmm, that’s crunchy
Isotopic analyses of the teeth of otters and mongooses from Africa have led one paleontologist to suggest that some of humanity's ancient kin shared those modern animals' preference for shelled prey such as freshwater crabs and snails.
- Paleontology
Tusk analyses suggest weaning took years
Changes in the proportions of various chemical isotopes deposited in mammoth tusks as they grew have enabled scientists to estimate how long it took juvenile mammoths to become fully weaned.
- Paleontology
Big bird terrorized South America
Researchers in Argentina have discovered fossils that may represent the heftiest flightless bird to ever have roamed the planet.
- Chemistry
Whiff Weapon: Pheromone might control invasive sea lampreys
Researchers have characterized the primary components of the migratory pheromone that guides sea lampreys to suitable spawning areas.
-
Upcoming events
From the issue of March 23, 2013.
-
Letters to the editor
Fusion reactions It is not true that fusion packs the highest punch of any known energy-generating process (“Ignition failed,” SN: 4/20/13, p. 26). Matter-antimatter annihilation far exceeds it (Star Trek had it right back in the 1960s). I believe that under certain conditions, matter falling into a black hole can also yield more energy than […]
-
Letters to the editor
Invertebrate enigmas I found the recent article “Evolutionary enigmas” (SN: 5/18/13, p. 20) fascinating because I know of another example of an invertebrate animal possessing a “strictly vertebrate” quality. As a high school human anatomy and physiology teacher, I sometimes have my students test the effects of the constituents in cigarette smoke on live Daphnia […]
- Life
Spiders love sweet smell of blood perfume
For on spider species, feeding on blood-gorged mosquitoes adds charm to a mate
-
Horse genome added to growing list of barnyard genetics projects
Equines join cucumbers and pigs as the most recent additions to the roster of organisms to have their complete DNA code spelled out. The new work on horses also helps answer a key question about chromosome structures called centromeres.
