The Prestin Gene and the Evolution of Ultrasonic Hearing in Cetaceans

The two major lineages of whales diverged from each other some 36 to 34 million years ago. One whale lineage, the baleen whales (Mysticeti), evolved a filter feeding strategy where vast quantities of tiny prey are strained from the water using rows of comb-like baleen plates (see Vaughan et al., 2010 for details). The second lineage, the toothed Read More...

Guanaco Social Costs and Benefits

Guanacos (Lama guanicoe) are wild camelids that inhabit the arid and semiarid grasslands and shrublands of South America.
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New Carnivore Discovered in Madagascar Marshes

Members of a research team from the Durrell Wildlife Conservation Trust recently discovered a new carnivore species (Carnivora, Family Eupleridae) in the marshes surrounding Lac Alaotra in Madagascar. The new species (Salanoia durrelli) is similar to the Read More...

Eavesdropping Enemies

Mammals communicate using visual signals, scent marks, and a wide array of vocalizations. The benefits of vocal communication are that the information is transmitted rapidly over relatively long distances even when the sender and receiver are out of each other’s sight. Of course, there Read More...