Phocid pinnipeds
Webb18 mars 2024 · Phocid seals exhibit the complete range of breeding systems observed within pinnipeds, ranging from the highly polygynous system of elephant seals, which exhibit some of the greatest sexual dimorphism observed in mammals (Fig. 8.3; Chap. 11), to serial monogamy with little or no dimorphism (many ice seals), to the polygynous …
Phocid pinnipeds
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Webb21 mars 2024 · Following the optimization, our analysis recognizes aquatic innovations as phocine reversions at the scale of Carnivora, or as convergences of monachines with non-phocid pinnipeds. View Show abstract WebbPhocidae Earless seals, also called “true seals" or "phocids", are the most diverse and widespread pinnipeds. They lack external ears, have more streamlined snouts, and are generally more aquatically adapted than otariids. They swim with efficient, undulating whole-body movements using their more-developed rear flippers.
Webb11 apr. 2024 · Pinnipeds may increase their haulout time, possibly to avoid in-water disturbance (Thorson and Reyff, 2006). If a marine mammal responds to a stimulus by changing its behavior (e.g., through relatively minor changes in locomotion direction/speed or vocalization behavior), the response may or may not constitute taking at the individual … WebbHigh-frequency hearing in phocid and otariid pinnipeds: an interpretation based on …
WebbPinnipeds—fur seals and sea lions, walruses and seals—are one of three major clades of … WebbMentioning: 6 - The First Report of Otarine Herpesvirus-1-Associated Urogenital Carcinoma in a South American Fur Seal (Arctocephalus australis) - Dagleish, Mark P ...
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 walrus), Otariidae (the eared seals: sea lions and fur seals), and Phocidae (the earless … Visa mer 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 Proto-Germanic *selkhaz. Visa mer 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. Pinniped skulls have large eye orbits, short snouts and a constricted interorbital region. … Visa mer 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. … Visa mer Cultural depictions Various human cultures have for millennia depicted pinnipeds. The anthropologist, A. Asbjørn Jøn, has … Visa mer Taxonomy The German naturalist Johann Karl Wilhelm Illiger was the first to recognize the pinnipeds as a … Visa mer 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 extreme … Visa mer As of 2024, the International Union for Conservation of Nature (IUCN) recognizes 36 pinniped species. With the Japanese sea lion and the Caribbean monk seal recently extinct, ten … Visa mer
Webb3 maj 2024 · Taken together there are 33 extant species of pinnipeds which can be found … iranian tv news during the shahWebb3 apr. 2024 · Pinnipeds have a significant impact on marine ecosystems (Bowen, 1997; Heithaus ... and Thomas et al. suggested that a diverse diet and regional and seasonal differences in the diet of Phocid seals were related to the ease of feeding due to the seasonal distribution and abundance of their principal prey species . Spotted ... iranian tv stationsWebbCharacterization of phocid herpesvirus-1 and -2 as putative alpha- and … order a cashier\u0027s check wells fargoWebb7 maj 2024 · Pinnipeds use a variety of modalities to communicate. The most well … iranian type 29WebbThirty-five living and recently extinct species of pinnipeds are distributed throughout the world: 19 phocids, 15 otariids, and the walrus. Included in this count is one species of phocid (Caribbean monk seal) and one species of otariid (Japanese sea lion) that have been classified as being extinct in historical time during recent decades. order a cardWebb17 juli 2024 · Extant pinnipeds comprise three monophyletic groups: Odobenidae … iranian vancouver immigration lawyerWebbPhocid seals have a rigid thoracic region attached to a highly flexible lumbar region with … order a cell phone online with bad credit