Results 11 to 20 of about 6,937 (226)

Age‐specific reproduction in female Steller sea lions in Southeast Alaska

open access: yesEcology and Evolution, 2023
Age‐, region‐, and year‐specific estimates of reproduction are needed for monitoring wildlife populations during periods of ecosystem change. Population dynamics of Steller sea lions (Eumetopias jubatus) in Southeast Alaska varied regionally (with high ...
Kelly K. Hastings   +4 more
doaj   +1 more source

A Comparison of Parapoxviruses in North American Pinnipeds

open access: yesFrontiers in Veterinary Science, 2021
Parapoxviruses cause nodular lesions on the skin and mucosal membranes of pinnipeds and infections by these viruses have been documented worldwide. Seal parapoxvirus is currently classified as a tentative species of the Parapoxvirus genus. Tissue or swab
Helena Costa   +10 more
doaj   +1 more source

Population trends of the Kuril harbour seal Phoca vitulina stejnegeri from 1974 to 2010 in southeastern Hokkaido, Japan

open access: yesEndangered Species Research, 2014
The Kuril harbour seal Phoca vitulina stejnegeri is an endangered species which inhabits southeastern Hokkaido, Japan. Its population declined precipitously from between 1500 and 4800 individuals in the 1940s to a few hundred individuals in the early ...
Y Kobayashi   +20 more
doaj   +1 more source

Comment on “Temporal and spatial variation in harbor seal (Phoca vitulina L.) roar calls from southern Scandinavia” [J. Acoust. Soc. Am. 141, 1824-1834 (2017)] [PDF]

open access: yes, 2018
In their recent article, Sabinsky and colleagues investigated heterogeneity in harbor seals' vocalizations. The authors found seasonal and geographical variation in acoustic parameters, warning readers that recording conditions might account for some of ...
Ravignani, A.
core   +2 more sources

Gut microbiota of endangered Australian sea lion pups is unchanged by topical ivermectin treatment for endemic hookworm infection

open access: yesFrontiers in Microbiology, 2022
The gut microbiota is essential for the development and maintenance of the hosts’ immune system. Disturbances to the gut microbiota in early life stages can result in long-lasting impacts on host health.
Mariel Fulham   +2 more
doaj   +1 more source

A critical revision of the fossil record, stratigraphy and diversity of the Neogene seal genus Monotherium (Carnivora, Phocidae) [PDF]

open access: yes, 2018
Historically, Monotherium had been one of the few genera of extinct Phocidae (true seals) that served as a wastebin taxon. Consequently, it did neither aid in understanding phylogenetic relationships of extinct Phocidae, nor in understanding seal ...
Dewaele, Leonard   +2 more
core   +2 more sources

On Prophoca and Leptophoca (Pinnipedia, Phocidae) from the Miocene of the North Atlantic realm : redescription, phylogenetic affinities and paleobiogeographic implications [PDF]

open access: yes, 2016
Background: Prophoca and Leptophoca represent the oldest known genera of phocine seals, dating from the latest early to middle Miocene. Originally, Prophoca rousseaui and Prophoca proxima were described based on fragmentary remains from the Miocene of ...
Dewaele, Leonard   +2 more
core   +4 more sources

Seals, Sea Lions, and Walruses [PDF]

open access: yes
A classroom resource for grades 4-8 lessons on these pinnipeds. Guide is complete with background materials (for students and teacher), goals and objectives, a glossary, 9 classroom activities, and a bibliography for obtaining additional resources.

core   +4 more sources

Walruses recovering after 60+ years of protection in Svalbard, Norway [PDF]

open access: yesPolar Research, 2014
Walruses were brought to the brink of extinction in Svalbard (Norway) during 350 years of unregulated harvesting. They became protected in 1952, when few remained.
Kit M. Kovacs   +2 more
doaj   +1 more source

Exposure of wild Caspian seals (Pusa caspica) to parasites, bacterial and viral pathogens, evaluated via molecular and serological assays

open access: yesFrontiers in Marine Science, 2023
Disease surveillance of marine mammal populations is essential to understand the causes of strandings, identify potential threats to animal health, and to support development of conservation strategies.
Aidyn Kydyrmanov   +8 more
doaj   +1 more source

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