Deep diving
The eyes of the deep diving hooded seal (Cystophora cristata) enhance sensitivity to ultraviolet light
... other deep divers, the grey whale (Mass and Supin, 2007) and the Weddell seal (Welsch et ...aquatic deep diving mammals, a cetacean and a carnivore, have both made significant changes to their ...
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Distribution, abundance and habitat use of deep diving cetaceans in the North East Atlantic
... long, deep dives followed by short surface intervals ...Other deep diving species include sperm whales (Physeter macrocephalus) and long-finned pilot whales (Globicephala ...
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Gait switches in deep diving beaked whales: biomechanical strategies for long duration dives
... of deep diving toothed whales, have several anatomical structures including unnotched lunate flukes, a slender peduncle and small pectoral flippers that fit into depressions in the body wall (True, 1910; ...
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Measuring foraging activity in a deep diving bird: comparing wiggles, oesophageal temperatures and beak opening angles as proxies of feeding
... Penguins are among the most important predators of the Southern Ocean, representing up to 90% of the avian biomass in this region (Woehler, 1995), and can represent relatively tractable bio-indicators (Bost et al., ...
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Physiological, morphological, and ecological tradeoffs influence vertical habitat use of deep diving toothed whales in the Bahamas
... Messages from tags used for location estimation also included internally summarized dive behavior data. These moderate-resolution summaries of raw high-resolution environmental sensor outputs (e.g., temperature, ...
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Intrinsic anti inflammatory properties in the serum of two species of deep diving seal
... in deep-diving Weddell seals among these five ...that diving mammals, including Weddell seals, additionally have immune cell-level adaptations that reduce the effects of dive-related ...
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Diving behavior and fine scale kinematics of free ranging Risso’s dolphins foraging in shallow and deep water habitats
... with diving metabolic rate in Steller sea-lions (Fahlman et ...shallow diving or off-shore deep-diving in bottlenose dolphins undergoing capture-release health assessments (Fahlman et ...the ...
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Foraging energetics and diving behavior of lactating New Zealand sea lions, Phocarctos hookeri
... spent diving and diving effort ...reduced diving effort and lower relative time spent diving indicated that the animals spent more time swimming between dense prey patches and thus spent less ...
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Gait switches in deep diving beaked whales : biomechanical strategies for long duration dives
... Figure 4. Scatter plots of half fluke-stroke (n= 2996) duration (taken from zero-crossings in the body rotation signal derived from the magnetometer) versus rotation angle and three acceleration measures. The plots ...
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How man made interference might cause gas bubble emboli in deep diving whales
... Recent cetacean mass strandings in close temporal and spatial association with sonar activity has raised the concern that anthropogenic sound may harm breath-hold diving marine mammals. Necropsy results of the ...
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Changes in dive behaviour during naval sonar exposure in killer whales, long finned pilot whales, and sperm whales
... survival. Diving behavior of four killer whales (Orcinus orca), seven long-finned pilot whales (Globicephala melas), and four sperm whales (Physeter macrocephalus) was studied during controlled exposures to naval ...
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Antioxidant capacity develops with maturation in the deep diving hooded seal
... Maturation in hooded seals is characterized by the rapid development of their physiological diving capacity and is accompanied by increases in oxidant production but not oxidative damage. To test the hypothesis ...
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Adaptations to deep and prolonged diving in phocid seals
... With the massive and widespread arterial constriction and the collapse of the lungs at depth, a question arises concerning where all the blood goes. Houston (1835) believed that the blood in peripheral tissues was ...
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Poor flight performance in deep diving cormorants
... as diving behaviour for a cormorant (here ‘cormorant’ is the general term for species in the family Phalacrocoracidae, whereas some of them are specifically called ‘shags’) (see Siegel-Causey, ...prolonged ...
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Novel locomotor muscle design in extreme deep diving whales
... of diving marine mammals (Hurley and Costa, 2001; Williams et ...in deep-diving mammals available at the time and calculated an ADL that was approximately half the length of a routine dive of their ...
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The effects of depth, temperature and food ingestion on the foraging energetics of a diving endotherm, the double crested cormorant (Phalacrocorax auritus)
... shallow diving in double- crested cormorants ...during deep diving, so we have no information on abdominal temperature during these ...during deep diving and if stomach temperature ...
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Deep diving pilot whales make cheap, but powerful, echolocation clicks with 50 µL of air
... We have demonstrated that on-animal recordings of echolocation clicks provide an unanticipated source of data that would otherwise be extremely difficult to obtain on how air in nasal spaces is used during deep ...
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Deadly diving? Physiological and behavioural management of decompression stress in diving mammals
... Several risk factors, such as increasing body fat and increasing age, have been proposed to increase the likeli- hood of DCS, but the data are inconsistent [5]. Effects of thermal stress and exercise appear to depend on ...
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Penguin head movement detected using small accelerometers: a proxy of prey encounter rate
... per diving bottom duration as the prey encounter rate of the dive, and its typical time series during the trips is shown in ...per diving bottom duration is also shown ...
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Behavioral responses of satellite tracked Blainville's beaked whales (Mesoplodon densirostris) to mid frequency active sonar
... noted deep divers and thus during the considerable proportion of time spent away from the surface, near surface RL estimates at predicted animal locations provided a spatial index of relative exposure ...
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