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Abstract Sympatric speciation remains a central focus of evolutionary biology. Although some evidence shows speciation occurring… Expand Shark skin has for many years inspired engineers to produce biomimetic structures reducing surface drag or acting as an anti… Expand Discovery of an unusual rectal gland in the Atlantic sixgill shark Hexanchus vitulus led us to examine the rectal glands of 31… Expand Biomagnification of some persistent organic pollutants (POPs) has been found in marine and freshwater food chains; however, due… Expand The Greenland shark (Somniosus microcephalus) has recently been identified as the world’s longest-living vertebrate animal, which… Expand Structure and pattern of helminth component communities parasitizing grebes and loons are poorly understood. Here we analyze the… Expand The first record of Evseenko’s eel cod Muraenolepis evseenkoi in the Weddell Sea, Atlantic sector, Southern Ocean, is documented… Expand The spraying of coca (Erythroxylum coca) with glyphosate in Colombia has raised concerns about possible impacts on amphibians… Expand In this evolutionary study the following criteria have been used to prove the existence of colipase: 1. It restores the activity… Expand