Results 41 to 50 of about 6,257 (171)

Zooarchaeology of Houses and Middens: Investigating Patterns of Assemblage Composition at Early Inuit Sites Across the North American Arctic

International Journal of Osteoarchaeology, EarlyView.
ABSTRACT This study examines faunal assemblages from paired semisubterranean houses and middens at 10 Early Inuit sites spanning the North American Arctic (ca. 1200–1500 ce) to evaluate whether local resource bases or other factors primarily structure zooarchaeological variability.
Lauren E. Y. Norman, T. Max Friesen, Sean P. A. Desjardins   +2 more
wiley   +1 more source

Blubber Thickening Driven by UCP1 Inactivation: Insights from a Cetacean‐Like Transgenic Mouse Model

Integrative Zoology, EarlyView.
UCP1 inactivation of cetaceans in mice drives BAT whitening and iWAT hyperplasia, promoting fat accumulation for aquatic adaptation. Abstract Cetaceans possess thick blubber, a specialized adipose tissue essential for thermal insulation, a streamlined body form, energy storage, and buoyancy. However, the mechanisms that underpin this adaptation are not
Qian Zhang, Yuehua Wang, Hang Zhang, Guiping Xu, Shixia Xu, Guang Yang   +5 more
wiley   +1 more source

Mycobacterium pinnipedii in a captive Southern sea lion (Otaria flavescens): a case report

Veterinární Medicína, 2011
Mycobacterium pinnipedii causes tuberculosis in free-living and captive pinniped species throughout the world. We report on the isolation of this M. tuberculosis complex (MTC) member from an imported male Southern sea lion (Otaria flavescens) in a zoo in
P. Kriz, P. Kralik, M. Slany, I. Slana, J. Svobodova, I. Parmova, V. Barnet, V. Jurek, I. Pavlik   +8 more
doaj   +1 more source

Sensory Biology of the Franciscana (Pontoporia blainvillei, Pontoporiidae, Cetartiodactyla): Ontogenetic Modifications of Vibrissae and Vibrissal Crypts

Integrative Zoology, EarlyView.
The transition of cetaceans from a terrestrial to an aquatic environment involved a crucial sensory adaptation to environments with limited visibility. Vibrissae, important mechanoreceptors, undergo an ontogenetic transformation in odontocetes. This research describes the histomorphology of vibrissae and crypts at different developmental stages ...
Cecilia Mariana Krmpotic, Cleopatra Mara Loza, Alejo Carlos Scarano, Pedro Fernando Andrés‐Laube, Francisco Acuña, Juan Pablo Loureiro, Carolina Natalia Zanuzzi, Nicolás Nahuel Castro, María Teresa Pombo, Lorenzo von Fersen, Claudio Gustavo Barbeito   +10 more
wiley   +1 more source

Campylobacter pinnipediorum subsp. caledonicus and C. pinnipediorum subsp. pinnipediorum recovered from abscesses in pinnipeds [PDF]

, 2020
Campylobacter pinnipediorum was described recently for isolates recovered from pinnipeds. The novel species was further split into 2 subspecies based on host and geography, with C. pinnipediorum subsp.
Clothier, Kristin A, Wagenaar, Jaap A., Gilbert, Maarten J, dI&I I&I-4, Byrne, Barbara A, Klinische infectiologie en microb. lab., Dagleish, Mark P, Baily, Johanna L, Clothier, Kristin A., Foster, Geoffrey; id_orcid, Patterson, Tony, Miller, William G, Dagleish, Mark P., Foster, Geoffrey, Reid, Robert J, Schmitt, Todd, Brownlow, Andrew C, Reid, Robert J., Baily, Johanna L., Gilbert, Maarten J., Wagenaar, Jaap A, Howie, Fiona, Byrne, Barbara A., Brownlow, Andrew C., Miller, William G.   +24 more
core   +2 more sources

TERRITORIALITY AND AGGRESSIVE BEHAVIOR IN MALE PINNIPEDS [PDF]

, 1988
64 pagesThe three families of pinnipeds include the Phocidae, "true seals", the Otariidae, sea lions and fur seals, and the Odobenidae, or of polygyny similarities in walruses.
Hartke, Monica Kathleen
core   +1 more source

A new enzyme-linked immunosorbent assay for serological diagnosis of seal parapoxvirus infection in marine mammals

Journal of Veterinary Research, 2022
Seal parapoxvirus (SPPV) infection has been reported among pinnipeds in aquaria in Japan; however, its seroprevalence is unknown. Therefore, an enzyme-linked immunosorbent assay (ELISA) was developed for serological diagnosis of SPPV infection.
Badr Yassien, Rahman Md. Matiur, Ohno Yoshito, Ishijima Keita, Maeda Ken, Kohyama Kaoru, Kamatari Yuji O., Shimizu Kaori, Okada Ayaka, Inoshima Yasuo   +9 more
doaj   +1 more source

Comparative Genomics and Functional Evidence for Convergent Adaptation to Hypoxia in Mammals

Integrative Zoology, EarlyView.
This study reveals convergent selection in mammals adapted to hypoxia. Functional assays demonstrate that amino acid mutations reduce oxidative stress, attenuate hypoxia‐induced injury, and modulate the hypoxia‐inducible transcription factor (HIF)‐driven hypoxic response.
Hao Dong, Chunxu Wang, Enqing Pei, Liang Zhao, Simin Chai, Ran Tian   +5 more
wiley   +1 more source

The Miocene seal Monachopsis pontica: isolated in a shrinking sea and adapting to its changing conditions

Royal Society Open Science
More than 170 years have passed since the description of the dwarf Miocene seal Monachopsis pontica. However, its cranial materials were rarely found and described. This paper re-describes M. pontica and discusses its ecological adaptations. M.
Pavlo Otriazhyi, Davit Vasilyan, Karina Vishnyakova, Elena Gladilina, Pavel Gol’din   +4 more
doaj   +1 more source

Evolutionary Mechanisms of Coagulation Factors in Cetaceans During Aquatic Adaptation

Integrative Zoology, EarlyView.
Compared with Bos taurus, T. truncatus showed shorter prothrombin time and thrombin time but prolonged activated partial thromboplastin time, indicating pathway‐specific remodeling of coagulation. Evolutionary analyses identified 18 positively selected genes and accelerated F11 evolution, while functional assays revealed increased coagulation factor ...
Wenjun Lv, Wanfei Deng, Fei Deng, Shixia Xu, Wenhua Ren   +4 more
wiley   +1 more source