Results 11 to 20 of about 3,964 (157)

Galápagos and Californian sea lions are separate species: Genetic analysis of the genus Zalophus and its implications for conservation management [PDF]

open access: yesFrontiers in Zoology, 2007
Background Accurate formal taxonomic designations are thought to be of critical importance for the conservation of endangered taxa. The Galápagos sea lion (GSL), being appreciated as a key element of the Galápagos marine ecosystem, has lately been listed
Wolf Jochen BW   +2 more
doaj   +2 more sources

Skull development of the California sea lion (Zalophus californianus californianus)

open access: yesCiencias Marinas, 2000
 This work describes the skull development in males and females of the California sea lion (Zalophus californianus californianus) examined in 87 specimens collected in the Gulf of California between 1982 and 1991.
MJ Vázquez-Cuevas   +2 more
doaj   +2 more sources

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

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   +2 more sources

The cost of male aggression and polygyny in California sea lions (Zalophus californianus). [PDF]

open access: yesPLoS ONE, 2010
In polygynous mating systems, males often increase their fecundity via aggressive defense of mates and/or resources necessary for successful mating. Here we show that both male and female reproductive behavior during the breeding season (June-August ...
Leah R Gerber   +4 more
doaj   +2 more sources

Annotation and comparative analysis of T cell receptor germline genes reveal lineage-specific patterns in pinnipeds [PDF]

open access: yesFrontiers in Immunology
Adaptive immunity in jawed vertebrates relies on V(D)J recombination, yet the expansion–contraction dynamics of germline genes remain underexplored, especially in secondary aquatic mammals.
Huan Qin   +7 more
doaj   +2 more sources

Gas bubble disease in the brain of a living California sea lion (Zalophus californianus) [PDF]

open access: yesFrontiers in Physiology, 2013
A yearling California sea lion (Zalophus californianus) was admitted into rehabilitation with signs of cerebellar pathology. Diagnostic imaging that included radiography and magnetic resonance imaging (MRI) demonstrated space-occupying lesions ...
William George Van Bonn   +4 more
doaj   +2 more sources

Klebsiella pneumoniae in stranded California sea lions (Zalophus californianus) of Central California between 2017-2022

open access: yesFrontiers in Marine Science
Klebsiella pneumoniae is a Gram-negative, facultative anaerobic, and non-motile bacillus frequently observed in mammals. A hypermucoviscous (HMV) phenotype of K.
Cara Field   +2 more
exaly   +3 more sources

Time-calibrated phylogeny and full mitogenome sequence of the Galapagos sea lion (Zalophus wollebaeki) from scat DNA [PDF]

open access: yesPeerJ, 2023
Background The Galapagos sea lion, Zalophus wollebaeki, is an endemic and endangered otariid, which is considered as a sentinel species of ecosystem dynamics in the Galapagos archipelago.
Pacarina Asadobay   +5 more
doaj   +2 more sources

Complete mitochondrial genome of the Galápagos sea lion, Zalophus wollebaeki (Carnivora, Otariidae): paratype specimen confirms separate species status [PDF]

open access: yesZooKeys, 2023
The endangered Galápagos sea lion (Zalophus wollebaeki) inhabits the Galápagos Islands off the coast of Ecuador. We present a complete mitochondrial genome (16 465 bp) of a female paratype from the collections of the Natural History Museum Oslo, Norway ...
Rita M. Austin   +2 more
doaj   +3 more sources

Diphyllobothrium sprakeri n. sp. (Cestoda: Diphyllobothriidae): a hidden broad tapeworm from sea lions off North and South America

open access: yesParasites & Vectors, 2021
Background The systematic of several marine diphyllobothriid tapeworms of pinnipeds has been revised in recent years. However, 20 species of Diphyllobothrium from phocids and otariids are still recognized as incertae sedis.
Jesús S. Hernández-Orts   +3 more
doaj   +1 more source

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