Results 81 to 90 of about 2,875 (205)

Population status, seasonal variation in abundance, and long-term population trends of Steller sea lions (Eumetopias jubatus) at the South Farallon Islands, California [PDF]

open access: yes, 2002
We examined seasonal and annual variation in numbers of Steller (northern) sea lions (Eumetopias jubatus) at the South Farallon Islands from counts conducted weekly from 1974 to 1996. Numbers of adult and subadult males peaked during the breeding season (
Hastings, Kelly K., Sydeman , William J.
core  

Disentangling the cause of a catastrophic population decline in a large marine mammal [PDF]

open access: yes, 2015
Considerable uncertainties often surround the causes of long-term changes in population abundance. One striking example is the precipitous decline of southern sea lions (SSL; Otaria flavescens) at the Falkland Islands, from 80 555 pups in the mid 1930s ...
Arnould, John P. Y.   +5 more
core   +2 more sources

Marine mammal recovery is associated with the resurgence of a nematode parasite

open access: yesEcology, Volume 106, Issue 10, October 2025.
Abstract As the oceans change, the abundance of parasites and the risk of infection to marine mammals may also be changing. Nematodes in the family Anisakidae can harm marine mammals, and recent studies have revealed a global increase in these parasites, but the cause is unknown.
Natalie C. Mastick   +7 more
wiley   +1 more source

Tooth Size Variation in Pinniped Dentitions. [PDF]

open access: yesPLoS ONE, 2015
It is contentious whether size variation among mammalian teeth is heterogeneous or homogeneous, whether the coefficient of variation is reliable, and whether the standard deviation of log-transformed data and the residual of standard deviation on mean ...
Mieczyslaw Wolsan   +3 more
doaj   +1 more source

Stereotypic route tracing in captive Carnivora is predicted by species-typical home range sizes and hunting styles [PDF]

open access: yes, 2016
In captive conditions (e.g. zoos), some Carnivora species typically show negligible stereotypic behaviour (SB) and reproduce successfully, while others tend to reproduce poorly and be very stereotypic.
Clubb, Ros   +5 more
core   +2 more sources

Gray Seal Cannibalism at the Largest Colony in the World, Sable Island

open access: yes
Marine Mammal Science, Volume 42, Issue 2, April 2026.
Izzy Langley   +5 more
wiley   +1 more source

Wanted dead or alive: characterizing likelihood of juvenile Steller sea lion predation from diving and space use patterns

open access: yesEndangered Species Research, 2019
Understanding linkages between behaviors and mortality risk is critical for managing populations. Juveniles constitute a particularly vulnerable life stage, with growing evidence that within stages, individual strategies may be associated with greater ...
AM Bishop   +4 more
doaj   +1 more source

Physiological Response to Feeding in Little Penguins [PDF]

open access: yes, 2006
© 2006 by The University of Chicago.Specific dynamic action (SDA), the increase in metabolic rate above resting levels that accompanies the processes of digestion and assimilation of food, can form a substantial part of the daily energy budget of free ...
Butler, P. J.   +3 more
core   +1 more source

Morphology and development of the baculum in harbour seals (Phoca vitulina)

open access: yesJournal of Zoology, Volume 326, Issue 4, Page 381-391, August 2025.
This study examines the ontogenetic changes in the morphology of the penis bone in the harbour seal, focusing on the implications for sexual maturity and reproductive function. A large comparative dataset of approx. 300 genital bones from 1 year to over 20 years of age was used for analyses.
T. Berghäuser   +3 more
wiley   +1 more source

An Integrative Method for Characterizing Marine Habitat Features Associated With Predation: A Case Study on Juvenile Steller Sea Lions (Eumetopias jubatus)

open access: yesFrontiers in Marine Science, 2020
Characterizing the habitat associated with predation events can inform on predator-prey dynamics. Despite being evaluated extensively in terrestrial systems, quantifying and characterizing the role predation plays in upper trophic marine ecosystems is ...
Amanda M. Bishop   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy