Results 51 to 60 of about 3,159 (193)

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

Viral metagenomic survey of Caspian seals

Frontiers in Veterinary Science
IntroductionViral diseases of pinnipeds cause substantial mortality and morbidity and can influence population demography. Viral metagenomic studies can therefore play an important role in pinniped health assessments and disease surveillance relevant to ...
Kobey Karamendin, Simon J. Goodman, Yermukhammet Kasymbekov, Marat Kumar, Sardor Nuralibekov, Aidyn Kydyrmanov   +5 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

Odobenus rosmarus divergens (Odobenidae) groups in the waters adjacent to coastal haulouts (Chukchi Peninsula, Russia)

Nature Conservation Research: Заповедная наука
The distance between individuals is one of the key characteristics of the spatial structure of a group. Here, we investigated inter-individual distances in Odobenus rosmarus divergens (hereinafter – walrus) aggregations in waters adjacent to four coastal
Andrey N. Giljov, Maria V. Seredinskaya, Natalia V. Kryukova, Danila O. Skorobogatov, Karina A. Karenina   +4 more
doaj   +1 more source

SEAL LOUSE (ECHINOPHTHIRIDAE) AS VECTORS FOR INVASIVE AND INFECTIOUS DISEASE AGENTS OF PINNIPEDS

Юг России: экология, развитие, 2017
The aim of the presented article is to analyze seal lice (Phthiraptera: Anoplura, Echinophthiridae) adaptation to aquatic environment – permanent parasites of pinnipeds, as well as available literature data about seal lice as pathogen vectors of their ...
Mikhail Yu. Shchelkanov, Igor O. Katin, Elena G. Burukhina, Irina V. Pochinok, Egor M. Shchelkanov, Yuriy G. Volkov, Alexander M. Shestopalov, Irina V. Galkina   +7 more
doaj   +1 more source

Secondary cartilage in the murine medial pterygoid plate has a critical role in the pathfinding of the tensor veli palatini

Journal of Anatomy, EarlyView.
The development of the medial pterygoid plate (MPP) is followed in mouse embryos, highlighting its neural crest origin and complex development via both endochondral and membranous ossification. Using transgenic mice, the secondary cartilage of the MPP is shown to direct the path of the tensor veli palatini.
Luke A. Barlow, Emi Nomura, Abigail S. Tucker   +2 more
wiley   +1 more source

TUBERCULOSIS IN A CAPTIVE COLONY OF PINNIPEDS [PDF]

Journal of Wildlife Diseases, 1991
Tuberculosis was diagnosed in 10 of 16 otariid seals upon post mortem examination. The species involved were New Zealand fur seals (Arctocephalus forsteri), Australian sea lions (Neophoca cinerea) and an Australian fur seal (Arctocephalus pusillus doriferus). Five seals died, four as a direct result of mycobacterial infection.
Forshaw, D., Phelps, G.R.
openaire   +2 more sources

Understanding marine biodiversity patterns and drivers: The fall of Icarus

Marine Ecology, EarlyView.
Abstract Biodiversity patterns are fundamental in our understanding of the distribution of life, ecosystem function, and conservation. In this concept analysis, A survey of the existing knowledge on marine biodiversity patterns and drivers across latitudes, longitudes, and depths indicates that none of the postulated patterns represent a rule.
Roberto Danovaro
wiley   +1 more source

Nuevos resultados del estudio del sitio Ajej I: un aporte a la variabilidad de estrategias de los canoeros fueguinos

Runa, 2008
El estudio del sitio Ajej I, ubicado cronológicamente entre 1300 y 1400 años AP, es resultado de una excavación de rescate realizada en la costa norte del Canal Beagle.
Ernesto Luis Piana, Martín Vázquez, Myria Álvarez   +2 more
doaj  

Flow sensing by pinniped whiskers [PDF]

Philosophical Transactions of the Royal Society B: Biological Sciences, 2011
Beside their haptic function, vibrissae of harbour seals (Phocidae) and California sea lions (Otariidae) both represent highly sensitive hydrodynamic receptor systems, although their vibrissal hair shafts differ considerably in structure. To quantify the sensory performance of both hair types, isolated single whiskers were used to measure vortex ...
L, Miersch, W, Hanke, S, Wieskotten, F D, Hanke, J, Oeffner, A, Leder, M, Brede, M, Witte, G, Dehnhardt   +8 more
openaire   +2 more sources