Results 11 to 20 of about 8,261 (299)

Causes of adult mortality in two populations of New Zealand sea lions (Phocarctos hookeri) [PDF]

open access: yesVeterinary and Animal Science, 2019
The New Zealand sea lion is an endangered species endemic to New Zealand. While causes of death are well described for pups of this species, mortality in adults is poorly characterised. This study investigated causes of death in 136 New Zealand sea lions
B. Lenting   +6 more
doaj   +2 more sources

Velocity Field Measurements of the California Sea Lion Propulsive Stroke Using Bubble PIV

open access: yesFluids, 2021
California sea lions are among the most agile of swimming mammals. Most marine mammals swim with their hind appendages—flippers or flukes, depending on the species—whereas sea lions use their foreflippers for propulsion and maneuvering.
Gino Perrotta   +5 more
doaj   +1 more source

Steller Sea Lion (Eumetopias jubatus) Response to Non-lethal Hazing at Bonneville Dam

open access: yesFrontiers in Conservation Science, 2021
Protected Steller sea lions (Eumetopias jubatus) aggregate at Bonneville Dam on the Columbia River and prey upon multiple species of endangered salmon ascending the river. Hazing is a non-lethal activity designed to repel sea lions that includes aversive
Kyle S. Tidwell   +3 more
doaj   +1 more source

Unlocking the Role of a Genital Herpesvirus, Otarine Herpesvirus 1, in California Sea Lion Cervical Cancer

open access: yesAnimals, 2021
Urogenital carcinoma in California sea lions (Zalophus californianus) is the most common cancer of marine mammals. Primary tumors occur in the cervix, vagina, penis, or prepuce and aggressively metastasize resulting in death.
Alissa C. Deming   +8 more
doaj   +1 more source

Individual foraging strategies reveal niche overlap between endangered galapagos pinnipeds. [PDF]

open access: yesPLoS ONE, 2013
Most competition studies between species are conducted from a population-level approach. Few studies have examined inter-specific competition in conjunction with intra-specific competition, with an individual-based approach.
Stella Villegas-Amtmann   +4 more
doaj   +1 more source

Assessment of Competition between Fisheries and Steller Sea Lions in Alaska Based on Estimated Prey Biomass, Fisheries Removals and Predator Foraging Behaviour. [PDF]

open access: yesPLoS ONE, 2015
A leading hypothesis to explain the dramatic decline of Steller sea lions (Eumetopias jubatus) in western Alaska during the latter part of the 20th century is a change in prey availability due to commercial fisheries.
Tabitha C Y Hui   +3 more
doaj   +1 more source

A novel method for identifying fine-scale bottom-use in a benthic-foraging pinniped

open access: yesMovement Ecology, 2023
Background For diving, marine predators, accelerometer and magnetometer data provides critical information on sub-surface foraging behaviours that cannot be identified from location or time-depth data.
Nathan Angelakis   +3 more
doaj   +1 more source

Diet of California sea lions, Zalophus californianus, at San Jorge Island, northern Gulf of California, Mexico, 1998–1999

open access: yesCiencias Marinas, 2005
The California sea lion, Zalophus californianus (Lesson, 1828), is the only resident pinniped in the Gulf of California, the largest populations inhabiting the Midriff islands and the northern gulf. San Jorge Island, in the northern gulf, has the second
Eric Mellink   +1 more
doaj   +1 more source

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