deep dives
Ontogenetic changes in tracheal structure facilitate deep dives and cold water foraging in adult leatherback sea turtles
... very deep dives (>300m) are rare (Houghton et ...all dives, and exceed calculated aerobic scope for the ...aerobic dives of <300m, but they conduct thousands of dives per year ...
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The role of infrequent and extraordinary deep dives in leatherback turtles (Dermochelys coriacea)
... of dives >600 m, with turtles possibly surveying the water column as they ...of deep dives during the daytime supports the notion of speculative excursions in search of gelatinous zooplankton ...
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Flipper stroke rate and venous oxygen levels in free ranging California sea lions
... deeper dives (>100 m). During the descent phase of these deep dives, 55± 21% of descent was spent gliding, with the longest glides lasting over 160 s and covering a vertical distance of 340 ...
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How fast does a seal swim? Variations in swimming behaviour under differing foraging conditions
... that dives to 40·m were generally much shorter than the estimated aerobic dive limit (ADL; equivalent to the oxygen stores divided by the metabolic rate) but in dives to 120·m, seals were approaching ADL at ...
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Gait switches in deep diving beaked whales: biomechanical strategies for long duration dives
... If the fibre composition reported for Md does have a connection with the B-stroke-and-glide gait reported here, then a possible explanation is that Type II muscle fibres are recruited to supplement propulsion when oxygen ...
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Heart rate and gas exchange in freely diving American mink (Mustela vision)
... Traces of instantaneous heart rate recorded from a 650g female mink at rest A, while eating and during shallow and deep dives in an indoor tank at the University of Birmingham B, during [r] ...
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To what extent might N2 limit dive performance in king penguins?
... only dives deeper than ...be dives. A dive bout was defined as a minimum of three repeated deep dives ( ⭓ 50·m) followed by a surface interval of less than ...
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Winter and spring diving behavior of bowhead whales relative to prey
... long-lasting deep dives with long bottom time, whereas in spring the dive rate more than doubled and the maximum depth of U-dives decreased ...
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Anterior vena caval oxygen profiles in a deep diving California sea lion: arteriovenous shunts, a central venous oxygen store and oxygenation during lung collapse
... of deep dives (>100 m maximum depth), as well as short duration glides during the last 25 – 30 m of ascent to the surface ...of dives performed by adult female California sea lions during foraging ...
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Changes in dive behaviour during naval sonar exposure in killer whales, long finned pilot whales, and sperm whales
... conducting deep dives at sonar onset changed abruptly to shallow diving (ShD) during LFAS, while killer whales conducting deep dives at the onset of MFAS did not alter dive ...normal ...
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... The initial discussion about the disciplinary deep dives occurred in late August 2015 and the presentation to library colleagues was held on October 5, 2015. The group came back together in late September ...
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Risso's dolphins plan foraging dives
... in dives and the sampling strategy used by the dolphins on dive ascents in relation to prey features and buzz ...of dives. In those dives, clicking continued after the last buzz recorded on the ...
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Risso's dolphins plan foraging dives
... in dives and the sampling strategy used by the dolphins on dive ascents in relation to prey features and buzz ...of dives. In those dives, clicking continued after the last buzz recorded on the ...
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Deep diving sea lions exhibit extreme bradycardia in long duration dives
... long deep dives, often exceeding their calculated aerobic dive limit of 3–5 min (cADL – estimation of aerobic dive limit obtained by dividing usable oxygen stores by estimated diving O 2 consumption) (Weise ...
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Stroke volume and cardiac output in juvenile elephant seals during forced dives
... Assuming that the animals adapted to the experimental paradigm, as evidenced by reduced signs of stress, the animals never had to ‘defend against asphyxia’ (Elsner and Gooden, 1983) by exhibiting extreme bradycardia. ...
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Convective oxygen transport and tissue oxygen consumption in Weddell seals during aerobic dives
... When marine mammals submerge, they exhibit a dive response that involves apnea, bradycardia and peripheral vasoconstriction (for a review, see Butler and Jones, 1997). Apnea interrupts respiratory gas exchange and forces ...
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Behavioral responses of big brown bats to dives by praying mantises
... Consistent with previous experiments using artificial bat sound generators to elicit evasive behaviors by mantises (Yager et al., 1990), we observed that mantis dives were not directional relative to the position ...
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Air sac PO2 and oxygen depletion during dives of emperor penguins
... (5 dives and 3 dives) were obtained from two of the penguins due to saltwater electrical shorting of a cable connection in one case and presumed physical damage (unidentifiable) to the electrode in the ...
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Drift dives and prolonged surfacing periods in Baikal seals: resting strategies in open waters?
... Baikal seals, Pusa sibirica Gmelin, in Lake Baikal, Russia, represent a unique subject for studying how pinnipeds rest and process food in the water. When the lake is covered by ice from November to June, this endemic ...
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Scanning sonar of rolling porpoises during prey capture dives
... Rolling dives were also characterized by short-range sonar sounds having minimum inter-click intervals of less than ...rolling dives of the finless ...
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