Results 11 to 20 of about 904 (165)

Evidence for positive selection on the leptin gene in Cetacea and Pinnipedia. [PDF]

open access: yesPLoS ONE, 2011
The leptin gene has received intensive attention and scientific investigation for its importance in energy homeostasis and reproductive regulation in mammals.
Li Yu   +8 more
doaj   +2 more sources

Microplastic Exposure for Pinnipeds (Pinnipedia): A Rapid Review

open access: yesEcologies
The widespread distribution of microplastics (MPs) is causing increasing concern among the scientific community and the public. Marine mammals are considered indicators of the ecological health of marine ecosystems, and many species, suffering from ...
Anastasia Vainberg, Evgeny Abakumov
doaj   +2 more sources

Prevalence and molecular characterisation of Acanthocephala in pinnipedia of the North and Baltic Seas

open access: yesInternational Journal for Parasitology: Parasites and Wildlife, 2018
Harbour seals (Phoca vitulina) and grey seals (Halichoerus grypus) are final hosts of acanthocephalans in the German North and Baltic Seas. Parasitic infections in seals can cause pathological changes, which may result in deteriorated health of the host.
Patrick Waindok   +4 more
doaj   +2 more sources

Inflammatory Pseudotumour in Common Seal (Phoca vitulina): A Case Report. [PDF]

open access: yesVet Med Sci
A 19‐year‐old intact male common seal (Phoca vitulina) diagnosed with a chronic ulcer. Microbiology identified Vibrio alginolyticus. Radiography noted phalanx alterations. Macroscopic, histopathological, and immunohistochemical examinations revealed a neoplastic origin with a myofibroblastic phenotype. This report describes the first documented case of
De Pablo-Moreno JM   +7 more
europepmc   +2 more sources

Morphology and function of pinniped necks: The long and short of it. [PDF]

open access: yesAnat Rec (Hoboken)
Abstract Terrestrial vertebrates from at least 30 distinct lineages in both extinct and extant clades have returned to aquatic environments. With these transitions came numerous morphological adaptations to accommodate life in water. Relatively little attention has been paid to the cervical region when tracking this transition.
Keller J   +3 more
europepmc   +2 more sources

Humans are not unique: difficult birth is common in placental mammals. [PDF]

open access: yesBiol Rev Camb Philos Soc
ABSTRACT Human childbirth is widely presumed to be uniquely difficult and dangerous compared to birth in other mammals. Tight fetopelvic proportions can result in obstructed labour and contribute to high rates of maternal and neonatal mortality. Ideas summarised under the ‘obstetrical dilemma’ have contributed to this assumption by explaining difficult
Grunstra NDS.
europepmc   +2 more sources

Broadening the semiaquatic scene: Quantification of long bone microanatomy across pinnipeds. [PDF]

open access: yesAnat Rec (Hoboken)
Abstract Investigations of bone microanatomy are commonly used to explore lifestyle strategies in vertebrates. While distinct microanatomical limb bone features have been established for exclusively aquatic and terrestrial lifestyles, identifying clear patterns for the semiaquatic lifestyle remains more challenging.
Alfsen A   +10 more
europepmc   +2 more sources

Helminths of South American fur seals (Arctocephalus australis) from the Subtropical Convergence Zone of the Southwestern Atlantic

open access: yesRevista Brasileira de Parasitologia Veterinária, 2023
Parasites are important components of ecosystems and may contribute to the ecological aspects of their hosts and indicate the integrity of their environment.
Itatiele Farias Vivian   +5 more
doaj   +1 more source

A Total Evidence Phylogenetic Analysis of Pinniped Phylogeny and the Possibility of Parallel Evolution Within a Monophyletic Framework

open access: yesFrontiers in Ecology and Evolution, 2020
In the present study, a series of phylogenetic analyses of morphological, molecular, and combined morphological-molecular datasets were conducted to investigate the relationships of 23 extant and 44 fossil caniforme genera, in order to test the ...
Ryan S. Paterson   +5 more
doaj   +1 more source

Eotaria citrica, sp. nov., a new stem otariid from the “Topanga” formation of Southern California [PDF]

open access: yesPeerJ, 2017
A new taxon of stem otariid, Eotaria citrica sp. nov., is described from the upper Burdigalian to lower Langhian “Topanga” formation of Orange County, California.
Jorge Velez-Juarbe
doaj   +2 more sources

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