The orca (Orcinus orca) pituitary gland: an anatomical, immunohistochemical and ultrastructural analysis [PDF]
Frontiers in NeuroanatomyThe pituitary gland is central to endocrine regulation in vertebrates, coordinating key physiological processes such as growth, reproduction, and stress responses.
Paula Alonso-Almorox +7 more
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Revised taxonomy of eastern North Pacific killer whales (Orcinus orca): Bigg’s and resident ecotypes deserve species status [PDF]
Royal Society Open ScienceKiller whales (Orcinus orca) are currently recognized as a single ecologically and morphologically diverse, globally distributed species. Multiple morphotypes or ecotypes have been described, often associated with feeding specialization, and several ...
Phillip A. Morin +8 more
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Epidemiology of skin changes in endangered Southern Resident killer whales (Orcinus orca). [PDF]
PLoS ONE, 2023 Photographic identification catalogs of individual killer whales (Orcinus orca) over time provide a tool for remote health assessment. We retrospectively examined digital photographs of Southern Resident killer whales in the Salish Sea to characterize ...
Joseph K Gaydos +11 more
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Luminance Contrast Perception in Killer Whales (Orcinus orca) [PDF]
AnimalsCetaceans are highly adapted to the underwater environment, which is very different from the terrestrial environment. For cetaceans with neither high visual acuity nor color vision, contrast may be an important cue for visual object recognition, even in ...
Ayumu Santa +6 more
doaj +2 more sources
Prey of killer whales (Orcinus orca) in Iceland. [PDF]
PLoS ONE, 2018 Killer whales have a cosmopolitan distribution and as a species are generalists, feeding on a variety of prey. However, local populations tend to specialise on specific prey types.
Filipa I P Samarra +9 more
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Species Distribution Modeling of Killer Whales (Orcinus orca) in Australian Waters [PDF]
Ecology and EvolutionThe killer whale (Orcinus orca) is a globally distributed apex predator. This species is represented by distinct ecotypes or forms, which are well documented in the Northern Hemisphere and Antarctica.
Marissa J. Hutchings +6 more
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Costs of maternal care revealed through body condition in Northern Resident killer whales (Orcinus orca) [PDF]
Scientific ReportsIn species with prolonged parental investment, extended care imposes considerable costs. In Northern Resident killer whales (Orcinus orca), maternal investment is demanding due to long gestation, extended lactation, and lifelong care of non-dispersing ...
Sharon W.C. Kay +8 more
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Infrared Thermography of the Blowhole as a Potential Diagnostic Tool for Health Assessment in Killer Whales (Orcinus orca) [PDF]
AnimalsKiller whales (Orcinus orca) are experiencing increasing environmental pressures, with some ecotypes being identified as endangered, and the development and validation of non-invasive health assessment tools is critical for assessing the well-being of ...
Jennifer P. Russell +4 more
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Killer whale (Orcinus orca) interactions with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries [PDF]
PeerJ, 2018 Over the past five decades, marine mammal interactions with fisheries have become a major human-wildlife conflict globally. The emergence of longline fishing is concomitant with the development of depredation-type interactions i.e., marine mammals ...
Paul Tixier +6 more
doaj +3 more sources
Matching-to-Sample Task Training of a Killer Whale (Orcinus orca) [PDF]
AnimalsMatching-to-sample tasks have been a useful method in visual cognitive studies on non-human animals. The use of touch panels in matching-to-sample tasks has contributed to cognitive studies on terrestrial animals; however, there has been a difficulty in ...
Ayumu Santa +4 more
doaj +2 more sources