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9 minutes ago · Pronghorns’ headgear is a blend of the characteristics of both horns and antlers. The core of a pronghorn is bone that is covered by a keratin sheath, like horns. But as with antlers, the ...
9 hours ago · The first detailed first-hand descriptions of the spotted hyena by Europeans come from Willem Bosman and Peter Kolbe. Bosman, a Dutch tradesman who worked for the Dutch West India Company at the Gold Coast (modern-day Ghana ) from 1688 to 1701, wrote of Jakhals, of Boshond (jackals or woodland dogs) whose physical descriptions match the spotted ...
9 hours ago · Following Linnaeus's first descriptions of the species, nine recent tiger subspecies have been proposed between the early 19th and early 21st centuries; namely the Bengal, Malayan, Indochinese, South China, Siberian, Caspian, Javan, Bali and Sumatran tiger. The Caspian, Javan and Bali tigers have gone extinct in the 20th century.
9 hours ago · Influenza viruses have been found in many other animals, including cattle, horses, dogs, cats, and marine mammals. Nearly all IAVs are apparently descended from ancestral viruses in birds. The exception are bat influenza-like viruses, which have an uncertain origin. These bat viruses have HA and NA subtypes H17, H18, N10, and N11.
9 hours ago · Maritime trade has rapidly affected the way marine organisms are transported within the ocean; new means of species transport include hull fouling and ballast water transport. In fact, Molnar et al. 2008 documented the pathways of hundreds of marine invasive species and found that shipping was the dominant mechanism for the transfer of invasive ...
9 hours ago · A study on the vertebral columns of extant pinnipeds and fossil stem pinnipeds, providing evidence of a shift from the evolution of diverse vertebral morphotypes to the constrained evolution of the vertebral column at the time of the major radiation of crown pinnipeds approximately 10–12 million years ago, is published by Esteban et al. (2024).
