WebJan 31, 2024 · Southern elephant seal pups are ∼38 kg at birth and, remarkably, gain over 3 kg/d before weaning at ∼22 d and ∼120 kg ( 5 ). Thus, we posit that UCP1 … 2.2Evolutionary history 3Anatomy and physiology Toggle Anatomy and physiology subsection 3.1Locomotion 3.2Senses 3.3Diving adaptations 3.4Thermoregulation 3.5Sleep 4Distribution and habitat 5Behavior and life history Toggle Behavior and life history subsection 5.1Foraging and predation … See more Pinnipeds , commonly known as seals, are a widely distributed and diverse clade of carnivorous, fin-footed, semiaquatic, mostly marine mammals. They comprise the extant families Odobenidae (whose only living member is the See more Taxonomy The German naturalist Johann Karl Wilhelm Illiger was the first to recognize the pinnipeds as a distinct taxonomic unit; in 1811 he gave the name Pinnipedia to both a family and an order. American zoologist See more Living pinnipeds mainly inhabit polar and subpolar regions, particularly the North Atlantic, the North Pacific and the Southern Ocean. They are entirely absent from Indomalayan waters. Monk seals and some otariids live in tropical and subtropical waters. … See more Cultural depictions Various human cultures have for millennia depicted pinnipeds. The anthropologist, A. Asbjørn Jøn, has analysed beliefs of the Celts of Orkney and Hebrides who believed in selkies—seals that could change into humans and walk … See more The name "pinniped" derives from the Latin words pinna "fin" and pes, pedis "foot". The common name "seal" originates from the Old English word seolh, which is in turn derived from the See more Pinnipeds have streamlined, spindle-shaped bodies with reduced or non-existent external ear flaps, rounded heads, flexible necks, limbs modified into flippers, and small tails. … See more Pinnipeds have an amphibious lifestyle; they spend most of their lives in the water, but haul out to mate, raise young, molt, rest, thermoregulate or escape from aquatic predators. Several species are known to migrate vast distances, particularly in response to … See more
(PDF) Analyses of a chromosome-scale genome assembly
WebPuijila darwini was a semi-aquatic carnivore which represents a morphological link in early pinniped evolution. Its fossil remains demonstrate the presence of enlarged, probably webbed feet, robust forelimbs and an unspecialized tail. This suggests that Puijila swam quadrupedally using its webbed fore and hind feet for propulsion. Phylogenetic studies … http://www.bio.sdsu.edu/faculty/BERTA_files/Berta_2009Pinniped%20Evolution.pdf ridgeview community bible church wv
Seals, Sea Lions, and Walruses Smithsonian Ocean
WebThe oldest definitive pinniped fossils date from approximately 30.6–23 million years ago (Ma) in the North Pacific. Pinniped monophyly is consistently supported; the group … http://www.nhc.ed.ac.uk/index.php?page=493.172.293 WebMay 7, 2013 · INTRODUCTION. The evolution of pinnipeds from a terrestrial ancestor to a fully aquatic mammal has involved numerous morphological and behavioral adaptations (Adam and Berta, 2002; Berta et al., 2006).While the postcrania have become specialized for swimming, the cranio-mandibular complex has assumed increased importance in … ridgeview community care home greer sc