Results 81 to 90 of about 1,895 (219)
Ontogenetic variations of the head of Aptenodytes forsteri (Aves, Sphenisciformes): muscular and skull morphology [PDF]
Polar Biology, 2017 The emperor penguin (Aptenodytes forsteri) is the largest extant penguin among living species breeding in winter, at Antarctic high latitudes. Despite several studies made on this species, musculature and skeletal anatomy are barely known, especially in non-adult specimens.
Sosa, María Alejandra +1 more
openaire +3 more sources
Functional Ecology, Volume 39, Issue 4, Page 1061-1070, April 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Understanding the mechanisms that increase a species resilience to climate change is central to predicting how they are likely to respond. One determinant of vulnerability to climate change identified in multiple taxa is the thermal range of a species' distribution.
Junghyuk Keum +3 more
wiley +1 more source
Avian influenza overview December 2024–March 2025
EFSA Journal, Volume 23, Issue 4, April 2025.Abstract Between 7 December 2024 and 7 March 2025, 743 highly pathogenic avian influenza (HPAI) A(H5) virus detections were reported in domestic (239) and wild (504) birds across 31 countries in Europe. HPAI A(H5N1) virus detections were predominant and mainly located in central, western and south‐eastern Europe.
European Food Safety Authority +15 more
wiley +1 more source
An enigmatic fossil penguin from the Eocene of Antarctica
Polar Research, 2017 Tarsometatarsi are key skeletal elements in penguin palaeontology. They constitute, among others, type specimens of all 10 widely accepted species of fossil penguins from the Eocene La Meseta Formation on Seymour Island (Graham Land, Antarctic Peninsula).
Piotr Jadwiszczak, Thomas Mörs
doaj +1 more source
Kiwi forego vison in the guidance of their nocturnal activities [PDF]
, 2007 We propose that the Kiwi visual system has undergone adaptive regression evolution driven by the trade-off between the relatively low rate of gain of visual information that is possible at low light levels, and the metabolic costs of extracting that ...
Corfield, Jeremy +5 more
core
Differences in speciation progress in feather mites (Analgoidea) inhabiting the same host: the case of Zachvatkinia and Alloptes living on arctic and long-tailed skuas [PDF]
, 2014 Recent molecular phylogenetic analyses have revealed that some apparently oligoxenous feather mite species are in fact monoxenous cryptic species with little morphological differentiation.
Biersma, Elisabeth M. +7 more
core +2 more sources
Revista del Museo Argentino de Ciencias Naturales, 2004 Eretiscus tonnii (Simpson) (Aves, Sphenisciformes): additional materials, taxonomic status and geographic distribution. Additional material of the small Latest Oligocene-Earliest Miocene fossil penguin, Eretiscus tonnii (Simpson, 1981) Olson, 1986, is described.
Carolina Acosta Hospitaleche +2 more
openaire +2 more sources
Do Egg Hormones Have Fitness Consequences in Wild Birds? A Systematic Review and Meta‐Analysis
Ecology Letters, Volume 28, Issue 3, March 2025.Egg‐laying species are key models for understanding the adaptive significance of maternal effects, with egg hormones proposed as an important underlying mechanism. Thirty years after their discovery, we used an evidence synthesis approach to test the evolutionary consequences of hormone‐mediated maternal effects.
Lucia Mentesana +4 more
wiley +1 more source
野生动物学报, 1985 企鹅目（Sphenisciformes）隶属于楔翼总目（Impennes）。本目只有一科:企鹅科（Spheniscidae）企鹅栖息于南半球,特别集中于南极大陆和亚南极附近的岛屿,是善于游泳和潜水的海鸟。企鹅的拉丁学名来自希腊文spheniskos,意思是“小的楔状物”,指其狭窄而呈鳍状的双翼好像楔状;英文penguin则是从威尔士两个古老字合并而来的,是“白头”的意思 ...
许维枢
doaj
Blue reflectance in tarantulas is evolutionarily conserved despite nanostructural diversity [PDF]
, 2015 Slight shifts in arrangement within biological photonic nanostructures can produce large color differences, and sexual selection often leads to high color diversity in clades with structural colors. We use phylogenetic reconstruction, electron microscopy,
Blackledge, Todd A +3 more
core +2 more sources