Results 21 to 30 of about 2,679 (207)

The Ancestral Carnivore Karyotype As Substantiated by Comparative Chromosome Painting of Three Pinnipeds, the Walrus, the Steller Sea Lion and the Baikal Seal (Pinnipedia, Carnivora). [PDF]

open access: yesPLoS ONE, 2016
Karyotype evolution in Carnivora is thoroughly studied by classical and molecular cytogenetics and supplemented by reconstructions of Ancestral Carnivora Karyotype (ACK).
Violetta R Beklemisheva   +6 more
doaj   +1 more source

The oldest record of the Steller sea lion Eumetopias jubatus (Schreber, 1776) from the early Pleistocene of the North Pacific [PDF]

open access: yesPeerJ, 2020
The extant genera of fur seals and sea lions of the family Otariidae (Carnivora: Pinnipedia) are thought to have emerged in the Pliocene or the early Pleistocene in the North Pacific.
Nahoko Tsuzuku, Naoki Kohno
doaj   +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   +8 more sources

Wild Encounters: Analyzing Human-Animal Interactions in British and Irish Association of Zoos and Aquariums Facilities. [PDF]

open access: yesZoo Biol
We investigated the quantity and diversity of animal–visitor interactions in BIAZA‐accredited facilities, finding 740 opportunities for interactions across a range of contexts including walkthroughs and handling. Meet and greets were the most offered and were influenced by the number of individual animals, cost of interaction, and animal popularity ...
Welsh T   +4 more
europepmc   +2 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

Can you hear me now? A comparative survey of pinniped auditory apparatus morphology

open access: yesZoodiversity, 2021
Over the past century research on the morphology of the auditory apparatuses of pinnipeds, which include Phocidae (true seals), Otariidae (sea lions and fur seals), and Odobenidae (walruses) is extremely limited, in comparison to other Carnivora ...
Lindsey Koper   +2 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

Mitotic and Meiotic Analysis in Arctocephalus Australis (Otariidae) [PDF]

open access: yesHereditas, 2004
The karyotype with C-, G- and NOR-banding of Arctocephalus australis is reported for the first time. The chromosomal number is 2n = 36. The X chromosome, identified in G-banded metaphases from males, is metacentric and the Y chromosome is a minute chromosome, also metacentric. Pachytene spermatocytes were used for synaptonemal complexes analysis with a
A, Beilis   +4 more
openaire   +2 more sources

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

Ultrastructure of Proechinophthirus zumpti (Anoplura, Echinophthiriidae) by scanning electron microscopy

open access: yesMemorias do Instituto Oswaldo Cruz, 2002
The ultrastructure of Proechinophthirus zumpti Werneck, 1955, mainly the external chorionic features of the egg, is described through electronic microscopy techniques.
Dolores del Carmen Castro   +2 more
doaj   +1 more source

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