Search Results - "NAITO, Yasuhiko"

Acceleration-triggered animal-borne videos show a dominance of fish in the diet of female northern elephant seals by Yoshino, Kaori, Takahashi, Akinori, Adachi, Taiki, Costa, Daniel P, Robinson, Patrick W, Peterson, Sarah H, Hückstädt, Luis A, Holser, Rachel R, Naito, Yasuhiko

“…Knowledge of the diet of marine mammals is fundamental to understanding their role in marine ecosystems and response to environmental change. Recently,…”
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Whiskers as hydrodynamic prey sensors in foraging seals by Adachi, Taiki, Naito, Yasuhiko, Robinson, Patrick W, Costa, Daniel P, Hückstädt, Luis A, Holser, Rachel R, Iwasaki, Wataru, Takahashi, Akinori

“…The darkness of the deep ocean limits the vision of diving predators, except when prey emit bioluminescence. It is hypothesized that deep-diving seals rely on…”
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The foraging benefits of being fat in a highly migratory marine mammal by Adachi, Taiki, Maresh, Jennifer L., Robinson, Patrick W., Peterson, Sarah H., Costa, Daniel P., Naito, Yasuhiko, Watanabe, Yuuki Y., Takahashi, Akinori

“…Foraging theory predicts that breath-hold divers adjust the time spent foraging at depth relative to the energetic cost of swimming, which varies with buoyancy…”
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Searching for prey in a three-dimensional environment: hierarchical movements enhance foraging success in northern elephant seals by Adachi, Taiki, Costa, Daniel P., Robinson, Patrick W., Peterson, Sarah H., Yamamichi, Masato, Naito, Yasuhiko, Takahashi, Akinori

“…Summary Foraging theory predicts that predators adjust their movements according to the spatial distribution of prey. Since prey is often patchily distributed,…”
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Three-dimensional resting behaviour of northern elephant seals: drifting like a falling leaf by Mitani, Yoko, Andrews, Russel D., Sato, Katsufumi, Kato, Akiko, Naito, Yasuhiko, Costa, Daniel P.

“…never haul out on land and they rarely spend more than a few minutes at a time at the surface. They are almost constantly making repetitive, deep dives,…”
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Penguin head movement detected using small accelerometers: a proxy of prey encounter rate by Kokubun, Nobuo, Kim, Jeong-Hoon, Shin, Hyoung-Chul, Naito, Yasuhiko, Takahashi, Akinori

“…Determining temporal and spatial variation in feeding rates is essential for understanding the relationship between habitat features and the foraging behavior…”
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Lightscapes of fear: How mesopredators balance starvation and predation in the open ocean by Beltran, Roxanne S, Kendall-Bar, Jessica M, Pirotta, Enrico, Adachi, Taiki, Naito, Yasuhiko, Takahashi, Akinori, Cremers, Jolien, Robinson, Patrick W, Crocker, Daniel E, Costa, Daniel P

“…Like landscapes of fear, animals are hypothesized to strategically use lightscapes based on intrinsic motivations. However, longitudinal evidence of…”
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Inferring prey size variation from mandible acceleration in northern elephant seals by Adachi, Taiki, Hückstädt, Luis A., Tift, Michael S., Costa, Daniel P., Naito, Yasuhiko, Takahashi, Akinori

“…Prey size is an important factor for predators as it affects prey quality (energy content) and hence total energy gain. However, it remains challenging to…”
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How can we observe the underwater feeding behavior of endotherms? by Naito, Yasuhiko

“…Marine mammals and marine birds perform diving to forage underwater. Recent technological advances have led to rapid progress in our understanding of diving…”
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Biosonar behaviour of free-ranging porpoises by Akamatsu, Tomonari, Wang, Ding, Wang, Kexiong, Naito, Yasuhiko

“…Detecting objects in their paths is a fundamental perceptional function of moving organisms. Potential risks and rewards, such as prey, predators, conspecifics…”
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Oxygen minimum zone: An important oceanographic habitat for deep‐diving northern elephant seals, Mirounga angustirostris by Naito, Yasuhiko, Costa, Daniel P., Adachi, Taiki, Robinson, Patrick W., Peterson, Sarah H., Mitani, Yoko, Takahashi, Akinori

“…Little is known about the foraging behavior of top predators in the deep mesopelagic ocean. Elephant seals dive to the deep biota‐poor oxygen minimum zone…”
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Stroke frequency, but not swimming speed, is related to body size in free-ranging seabirds, pinnipeds and cetaceans by Sato, Katsufumi, Watanuki, Yutaka, Takahashi, Akinori, Miller, Patrick J.O, Tanaka, Hideji, Kawabe, Ryo, Ponganis, Paul J, Handrich, Yves, Akamatsu, Tomonari, Watanabe, Yuuki, Mitani, Yoko, Costa, Daniel P, Bost, Charles-André, Aoki, Kagari, Amano, Masao, Trathan, Phil, Shapiro, Ari, Naito, Yasuhiko

“…=0.99,…”
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Body density affects stroke patterns in Baikal seals by Watanabe, Yuuki, Baranov, Eugene A, Sato, Katsufumi, Naito, Yasuhiko, Miyazaki, Nobuyuki

“…Buoyancy is one of the primary external forces acting on air-breathing divers and it can affect their swimming energetics. Because the body composition of…”
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Factors affecting stroking patterns and body angle in diving Weddell seals under natural conditions by Sato, Katsufumi, Mitani, Yoko, Cameron, Michael F, Siniff, Donald B, Naito, Yasuhiko

“…Aquatic animals use a variety of strategies to reduce the energetic cost of locomotion. Efficient locomotion is particularly important for breath-holding…”
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Swimming speeds and buoyancy compensation of migrating adult chum salmon Oncorhynchus keta revealed by speed/depth/acceleration data logger by Tanaka, H, Takagi, Y, Naito, Y

“…Although the homing migration of Pacific salmon is well documented, the swimming behaviour of the returning salmon has been poorly described, principally as a…”
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Using a mandible accelerometer to study fine-scale foraging behavior of free-ranging Antarctic fur seals by Iwata, Takashi, Sakamoto, Kentaro Q., Takahashi, Akinori, Edwards, Ewan W. J., Staniland, Iain J., Trathan, Philip N., Naito, Yasuhiko

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Validation of a device for accurate timing of feeding events in marine animals by Suzuki, Ippei, Naito, Yasuhiko, Folkow, Lars P, Miyazaki, Nobuyuki, Blix, Arnoldus S

“…Two acceleration data loggers, each measuring surging and heaving acceleration, were attached to the head and mandible of three captive hooded seals,…”
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Development of flight performance in the brown booby by Yoda, Ken, Kohno, Hiroyoshi, Naito, Yasuhiko

“…Sula leucogaster…”
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Stroke and glide of wing–propelled divers: deep diving seabirds adjust surge frequency to buoyancy change with depth by Watanuki, Yutaka, Niizuma, Yasuaki, Geir, Wing Gabrielsen, Sato, Katsufumi, Naito, Yasuhiko

“…) was measured in the wild by high–speed (32 Hz) sampling of surge (tail–to–head) and heave (ventral–to–dorsal) accelerations with bird–borne data loggers. At…”
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Identifying spawning events of greater amberjack using accelerometers by Sakaji, Hideo, Hamada, Kazuhisa, Naito, Yasuhiko

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