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Showing 1 to 15 of 15 for “"Cetacea"”.
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The Ecology of Cuvier’s beaked whale, Ziphius cavirostris (Cetacea: Ziphiidae), in the Bay of Biscay
… whale, this study investigated other deep-diving cetaceans (Northern bottlenose whale, Hyperoodon ampullatus, Sowerby’s beaked whale, Mesoplodon bidens, Sperm whale, Physalus macrocephalus, Pilot whale, Globicephala melas) and non-deep diving cetaceans (Fin whale, Balaenoptera physalus, and Common …
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Ocorrência e uso de habitat da baleia-de-Bryde (Balaenoptera edeni Anderson, 1878) (Mammalia: Cetacea, Balaenopteridae) na região de ressurgência de Cabo Frio, RJ
… Marinhos da Região dos Lagos for monitoring cetaceans from a shore base, at Arraial do Cabo, southeastern of Brazil. Resulting of 2816h of effort with 203 B. edeni observed. This study provided a clear picture of the seasonal variation of this whale which had the highest frequency during the …
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A history of South Island whaling : A dissertation submitted in partial fulfilment of the requirements for the Diploma of Parks and Recreation
… held by the author. My past association with cetacea, - the whales and dolphins, has been limited to a purely recreational relationship however a growing interest in the oceans and man's association with them made a subject such as I have chosen, a natural choice. This dissertation begins with …
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On the Phylogenetic Relationships Among Paenungulata and Within Elephantidae as Demonstrated by Molecular and Osteological Evidence
… Hyracoidea, Embrithopoda (=PAEN); (2) Cetacea, PAEN; (3) Tubulidentata, Ungulata (Artiodactyla and Perissodactyla), Notoungulata; (4) Ungulata, PAEN; and (5) Rodentia, Lagomorpha, Macroscelidea. Differences based on molecular results include: (1) Tubulidentata, PAEN; (2) Cetacea, …
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Alterações morfológicas e patológicas em esqueletos de boto-cinza Sotalia fluviatilis (Gervais, 1853) do litoral do Estado do Rio de Janeiro
Sotalia fluviatilis (Gervais, 1853) (Mammalia, Cetacea, Delphinidae), the tucuxi dolphin, is the most common delphinid on Rio de Janeiro coast. However, osteological information about this species are very limited. To increase the knowledge about bony changes in skeletals of this species, a study …
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The Management and Stewardship of A Cetacean Collection
<p>Cetacean, by definition, is a marine mammal of the order Cetacea; a whale, dolphin or porpoise. In light of their social intellect and friendly appearance, cetaceans are used in institutions such as zoos and aquariums as a source of education and entertainment for the public. Before the Marine …
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Comparative analyses of aryl hydrocarbon receptor structure and function in marine mammals
… of DLC. The structures and functions of several cetacean AHRs were investigated using in vitro molecular cloning and biochemical techniques. Using a novel combination of remote biopsy and molecular cloning methods, RNA was extracted from small integument samples from living North Atlantic right …
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Social behavior of the Cuvier’s beaked whale (Ziphius cavirostris) investigated by telemetry and photo-identification
… of the most extreme diving mammals within the Cetacea which are themselves one of the few mammalian groups to become secondarily fully aquatic. The beaked whales are also the second most speciose family in the cetaceans and so can lend statistical power to formal comparative analyses. One …
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Approaches for assessing the presence and impact of thyroid hormone disrupting chemicals in delphinid cetaceans
Cetacean blubber is a primary site for lipid storage, which the animal utilizes during periods of energetic stress. It is important to understand how the blubber responds to factors such as ontogeny, water temperature, reproductive status, and nutritional state because blubber is also the primary …
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Cytochrome P450 1A1 and aromatase (CYP19) in cetaceans : enzyme expression and relationship to contaminant exposure
… will aid in understanding the susceptibility of cetaceans to such exposures. Cytochrome P450 1A1 (CYP1A1) induction by planar halogenated aromatic hydrocarbons, including certain polychlorinated biphenyls (PCBs), has been correlated with toxic effects in rodents. CYP1A1 expression was measured in …
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Foraging ecology and population structuring of baleen whales in the western South Atlantic and eastern South Pacific
Baleen whales are highly mobile marine predators that are still recovering from unsustainable exploitation between the 18th and 20th centuries. There remain considerable gaps in our understanding of the migration, foraging localities, prey choice and population connectivity of whales in the …