Results 1 to 10 of about 2,673 (110)

Una nueva especie de spheniscidae del Mioceno Tardío de la Formación Pisco, Perú

open access: yesBulletin De L'Institut Français D'études Andines, 2003
A new species of genus Spheniscus is described based on cranial elements from Late Miocene of Pisco Formation on the central-southern coast of Peru.
Mario Urbina-Schmitt
exaly   +5 more sources

Fossil plotopterid seabirds from the Eo-Oligocene of the Olympic Peninsula (Washington State, USA): descriptions and functional morphology. [PDF]

open access: yesPLoS ONE, 2011
The plotopterids (Aves, Plotopteridae) were a group of extinct wing-propelled marine birds that are known from Paleogene-aged sediments (Eocene to Miocene), mostly around the Pacific Rim (especially Japan and the northwest coast of North America).
Gareth J Dyke, Xia Wang, Michael B Habib
doaj   +1 more source

African penguins follow the gaze direction of conspecifics [PDF]

open access: yesPeerJ, 2017
Gaze following is widespread among animals. However, the corresponding ultimate functions may vary substantially. Thus, it is important to study previously understudied (or less studied) species to develop a better understanding of the ecological ...
Christian Nawroth   +2 more
doaj   +2 more sources

Characterization of the complete mitochondrial genome of the Macaroni penguin Eudyptes chrysolophus from the Barton Peninsula, King George Island, Antarctica

open access: yesMitochondrial DNA. Part B. Resources, 2021
The Macaroni penguin Eudyptes chrysolophus is a small crested penguin. In this study, the complete mitochondrial genome of E. chrysolophus is revealed for the first time. The mitogenome sequence is circular and 17,059 bp in length. It contains 13 protein-
Jong-U Kim, Jeong-Hoon Kim
doaj   +1 more source

First evidence of underwater vocalisations in hunting penguins [PDF]

open access: yesPeerJ, 2019
Seabirds are highly vocal on land where acoustic communication plays a crucial role in reproduction. Yet, seabirds spend most of their life at sea. They have developed a number of morphological, physiological and behavioural adaptations to forage in the ...
Andréa Thiebault   +4 more
doaj   +2 more sources

Baseline Gene Expression Levels in Falkland-Malvinas Island Penguins: Towards a New Monitoring Paradigm

open access: yesLife, 2022
Health diagnostics of wildlife have historically relied on the evaluation of select serum biomarkers and the identification of a contaminant or pathogen burden within specific tissues as an indicator of a level of insult.
Lizabeth Bowen   +5 more
doaj   +1 more source

Descripción cariotípica de Spheniscus magellanicus (Spheniscidae)

open access: yesEl Hornero, 2003
En este trabajo se describe por primera vez el cariotipo y el patrón de bandas C de Spheniscus magellanicus. Se tomaron muestras de sangre periférica de tres hembras y cuatro machos en Imbé (Rio Grande do Sul, Brasil).
Mario A. Ledesma   +4 more
doaj   +1 more source

Foreflipper and hindflipper muscle reconstructions of Cryptoclidus eurymerus in comparison to functional analogues: introduction of a myological mechanism for flipper twisting [PDF]

open access: yesPeerJ, 2021
Background Plesiosaurs, diapsid crown-group Sauropterygia, inhabited the oceans from the Late Triassic to the Late Cretaceous. Their most exceptional characteristic are four hydrofoil-like flippers.
Anna Krahl, Ulrich Witzel
doaj   +2 more sources

Health evaluation of African penguins (Spheniscus demersus) in southern Africa

open access: yesOnderstepoort Journal of Veterinary Research, 2016
The African penguin (Spheniscus demersus) is an endangered seabird that breeds along the coast of Namibia and South Africa, and disease surveillance was identified as a priority for its conservation.
Nola J. Parsons   +3 more
doaj   +1 more source

Ultrastructural aspects of the tongue in Magellanic Penguins Spheniscus magellanicus (Forster, 1781)

open access: yesActa Scientiarum: Biological Sciences, 2014
The tongue of birds presents diversified morphologic characteristics, related directly their feeding habits and may be adapted to food capture. Penguins of the Spheniscidae family are pelagic birds that are totally adapted to the marine environment.  The
Juliana Plácido Guimarães   +3 more
doaj   +1 more source

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