Results 81 to 90 of about 888,005 (227)

Bayesian total evidence dating reveals the recent crown radiation of penguins [PDF]

open access: yes, 2016
The total-evidence approach to divergence-time dating uses molecular and morphological data from extant and fossil species to infer phylogenetic relationships, species divergence times, and macroevolutionary parameters in a single coherent framework ...
Drummond, Alexei J.   +5 more
core   +5 more sources

How do parasites and predators choose their victim? A trade‐off between quality and vulnerability across antagonistic interactions

open access: yesBiological Reviews, Volume 100, Issue 5, Page 2099-2115, October 2025.
ABSTRACT From blood‐sucking lice and food‐stealing gulls to pandemic‐inducing viruses and egg‐eating snakes: parasites and predators are ubiquitous in shaping ecology and evolution. Fundamental to these interactions is the way in which parasites and predators choose their victim. Here, I argue that a trade‐off between host quality and vulnerability can
Mairenn C. Attwood
wiley   +1 more source

Departure time influences foraging associations in little penguins. [PDF]

open access: yesPLoS ONE, 2017
Recent studies have documented that little penguins (Eudyptula minor) associate at sea, displaying synchronised diving behaviour throughout a foraging trip.
Grace J Sutton   +3 more
doaj   +1 more source

Variability of little blue penguin (Eudyptula minor) diving behaviour across New Zealand

open access: yesNew Zealand journal of ecology, 2019
Foraging strategies of penguin species can vary according to the quality of the marine environment, and this influences their abundance and breeding success.
L. Chilvers
semanticscholar   +1 more source

Surface Topography and Ultrastructure of the Spectacular Cells in the Eyes of Land and Sea Snakes (Squamata, Reptilia): Functional Adaptations of Micro‐Ornamentation

open access: yesJournal of Morphology, Volume 286, Issue 9, September 2025.
ABSTRACT Although the surface micro‐ornamentation of the scales within the skin of snakes has been the subject of many previous studies, there has been little work done on the spectacle, a protective (keratinised) goggle separated from the underlying cornea by a sub‐spectacular space. The surface ultrastructure of the “Oberhäutchen” of the spectacle is
H. Barry Collin   +6 more
wiley   +1 more source

Curious creatures: a multi-taxa investigation of responses to novelty in a zoo environment [PDF]

open access: yesPeerJ, 2018
The personality trait of curiosity has been shown to increase welfare in humans. If this positive welfare effect is also true for non-humans, animals with high levels of curiosity may be able to cope better with stressful situations than their ...
Belinda A. Hall   +4 more
doaj   +2 more sources

Environmental and Evolutionary Forces Shaping Penguin Geographic Limits

open access: yesJournal of Biogeography, Volume 52, Issue 9, September 2025.
ABSTRACT Aim Penguins are seabirds exclusively found in the Southern Hemisphere, with their existence dating back to the late Cretaceous. Despite their exceptional dispersal capabilities, which allow them to inhabit a wide range of environments—from polar regions to temperate zones, and even near the Equator—penguins are absent in the Northern ...
Amanda Mourão Santos   +1 more
wiley   +1 more source

Diets of shags Phalacrocorax aristotelis and cormorants P. carbo in Norway and possible implications for gadoid stock recruitment [PDF]

open access: yes, 1990
The diets of shags and cormorants were studied in Norway through analyses of regurgitated pellets. Although this method has many limitations, indications were that both species rely heavily on small gadoids (Gadidae) and sand eels (Ammodytidae) for food ...
Barrett, R. T.   +3 more
core   +1 more source

Silver gull carcasses host unique carrion insect communities on a nearshore island

open access: yesAustral Entomology, Volume 64, Issue 3, August 2025.
Abstract Island ecosystems offer unique opportunities to study the dynamics of species that rely on ephemeral resources such as carrion. This study investigated the necrophagous insect communities associated with carrion of silver gulls (Chroicocephalus novaehollandiae) on a small nearshore island off the east coast of Australia, to assess how ...
Nikolas P. Johnston   +3 more
wiley   +1 more source

The potential costs of flipper-bands to penguins [PDF]

open access: yes, 2002
1. The published literature on the effects of flipper-bands on penguin ecology is reviewed. Six published studies show the following. 2. In Adélie Penguins Pygoscelis adeliae, flipper-bands directly damaged flippers, increased swimming costs by 24%,
Jackson, S., Wilson, Rory P.
core  

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