Results 11 to 20 of about 2,742 (161)

Multiple sex chromosome system in penguins (Pygoscelis, Spheniscidae) [PDF]

open access: yesComparative Cytogenetics, 2017
Penguins are classified in the order Sphenisciformes into a single family, Spheniscidae. The genus Pygoscelis Wagler, 1832, is composed of three species, Pygoscelis antarcticus Forster, 1781, P. papua Forster, 1781 and P.
Ricardo José Gunski   +6 more
doaj   +6 more sources

THE CORACOIDS IN FUNCTIONAL AND MORPHOLOGICAL STUDIES OF PENGUINS (AVES, SPHENISCIDAE) OF THE EOCENE OF ANTARCTICA

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2010
The partial articulated skeleton MLP 77-V-10-1 comes from the upper levels of La Meseta Formation (Seymour Island, Antarctica) at the southwestern slope of the plateau.
CAROLINA ACOSTA HOSPITALECHE   +1 more
doaj   +3 more sources

Identification of the complete mitochondrial genome of the king penguin Aptenodytes patagonicus (Sphenisciformes: Spheniscidae: Aptenodytes) [PDF]

open access: yesMitochondrial DNA. Part B. Resources, 2019
The complete mitochondrial genome of the king penguin Aptenodytes patagonicus was firstly determined. The mitogenome is 17,477 bp in length and contains 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, 2 ribosomal RNA (rRNA) genes, and a ...
Jing Du   +6 more
doaj   +3 more sources

Evolution of embryonic developmental period in the marine bird families Alcidae and Spheniscidae: roles for nutrition and predation? [PDF]

open access: yesBMC Evolutionary Biology, 2010
Background Nutrition and predation have been considered two primary agents of selection important in the evolution of avian life history traits. The relative importance of these natural selective forces in the evolution of avian embryonic developmental ...
Vos Rutger A   +3 more
doaj   +4 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

Skeletal elements of the penguin eye and their functional and phylogenetic implications (Aves: Sphenisciformes: Spheniscidae) [PDF]

open access: yesJournal of Morphology, 2021
Abstract Scleral ossicles and other bony elements are present in the eyes of many vertebrates, including birds. In this study, the skeletal elements present in the penguin eye and orbit were imaged using macro photographs and micro‐computed tomography (micro‐CT), to help elucidate their function and significance ...
Peter W. Hadden   +3 more
openaire   +3 more sources

Can penguins (Spheniscidae) see in the ultraviolet spectrum?

open access: yesPolar Biology, 2023
AbstractIt has been postulated that ultraviolet reflectance is important in mate choice in King Penguins Aptenodytes patagonicus, although not in other penguin species that do not have body parts that reflect UV light. However, this theory has been challenged.
Hadden, Peter   +5 more
openaire   +2 more sources

Spheniscidae Bonaparte 1831

open access: yes, 2023
Published as part of Hospitaleche, Carolina Acosta & Soto-Acuña, Sergio, 2023, A small penguin cranium (Aves, Spheniscidae) from the Late Miocene of Bahía Inglesa Formation, Atacama Desert, Northern Chile, pp. 233-244 in Comptes Rendus Palevol 22 (13) on pages 238-239, DOI: 10.5852/cr-palevol2023v22a13, http://zenodo.org/record ...
Hospitaleche, Carolina Acosta   +1 more
openaire   +2 more sources

Global terrestrial distribution of penguins (Spheniscidae) and their conservation by protected areas [PDF]

open access: yesBiodiversity and Conservation, 2019
Establishing protected areas (PAs) ranks among the top priority actions to mitigate the global scale of modern biodiversity declines. However, the distribution of biodiversity is spatially asymmetric among regions and lineages, and the extent to which PAs offer effective protection for species and ecosystems remains uncertain.
Hickcox, RP   +4 more
openaire   +2 more sources

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