Results 51 to 60 of about 2,742 (161)
Mitigating the effect of by‐catch on endangered marine life
Animal Conservation, Volume 28, Issue 2, Page 172-184, April 2025.Fishing gears cause substantial impacts on the oceans and their ecosystems, and many marine animals, such as sea turtles, marine mammals, seabirds and elasmobranchs, end up as by ‐catch. In this paper, the most effective mitigation measures were investigated for each group, taking into account the fishing gear with which they interact most.
M. Villafáfila +2 more
wiley +1 more source
Environmental DNA, Volume 7, Issue 2, March/April 2025.This study employed eDNA to characterize marine vertebrate biodiversity at Tristan da Cunha, the world's most remote archipelago. The multi‐assay approach successfully detected 51 Operational Taxonomic Units (OTUs) encompassing 24 families, 32 genera, and 13 species, resolving the islands characteristic diversity profile, and also identifying rare and ...
Megan M. A. Elsmore +7 more
wiley +1 more source
Pesquisa Veterinária Brasileira, 2013 The occurrence of infections and the disease induced by Contracaecum plagiaticium and Contracaecum pelagicum in Magellanic penguins, Spheniscus magellanicus Foster.
Sabrina D.E. Campos +5 more
doaj
Acoustic cues to development of African Penguins (Spheniscus demersus) begging calls
Ibis, Volume 167, Issue 1, Page 286-294, January 2025.Avian begging calls mediate parent–offspring conflict and direct parental care to genetically related progeny. We found that the fundamental frequency of begging calls of African Penguins Spheniscus demersus decreases as the penguins age and gain mass, before reaching a lower plateau when the chick reaches about 1 kg.
Anna Zanoli +8 more
wiley +1 more source
3D-Visualization of the Ear Morphology of Penguins (Spheniscidae): Implications for Hearing Abilities in Air and Underwater [PDF]
Proceedings of Meetings on Acoustics, 2019 The ear morphology of three penguin species (Aptenodytes forsteri, Pygoscelis papua and Spheniscus demersus) was analyzed using diffusible iodine-based contrast-enhanced computed tomography (diceCT). Main aural structures were visualized and the results were animated in 3D videos as open educational resources to facilitate UNESCOs mandate for a free ...
Sylke Frahnert +5 more
openaire +1 more source
The Anatomical Record, Volume 307, Issue 12, Page 3801-3829, December 2024.Abstract Aquatic birds represent diverse ecologies and locomotion types. Some became flightless or lost the ability for effective terrestrial locomotion, yet, certain species excel in water, on land, and in air, despite differing physical characteristics associated with each medium.
Martin Segesdi +3 more
wiley +1 more source
What do we really know about the water repellency of feathers?
Journal of Avian Biology, Volume 2024, Issue 11-12, November/December 2024.Feathers are complex integument structures that provide birds with many functions. They are vital to a bird's survival, fundamental to their visual displays, and responsible for the evolutionary radiation of the avian class. Feathers provide a protective barrier for the body; their water repellency is a key feature.
Frank M. S. Muzio, Margaret A. Rubega
wiley +1 more source
Pesquisa Veterinária Brasileira, 2014 : Magellanic penguins (Spheniscus magellanicus) usually arrive in poor body conditions at Brazilian beaches during the winter. Hematology provides valuable information about clinical and immunity status of the animals.
Angela M. Coraiola +4 more
doaj +1 more source
Ibis, Volume 166, Issue 4, Page 1296-1310, October 2024.The over‐exploitation of wild birds and the products derived from them can be a key threat driving changes in bird species richness and abundance. However, inadequate information on harvest levels combined with irregular population monitoring often means that the role of harvesting in population decline is difficult to quantify.
Thalissa Inch +3 more
wiley +1 more source
Ecology and Evolution, Volume 14, Issue 9, September 2024.This study tests whether populations of Black Oystercatchers (Haematopus bachmani) across Alaska, the United States, and British Columbia, Canada, follow patterns of latitudinal gradients in morphology. Specifically, we test for patterns of Allen's and Bergmann's Rules, as well as differences in wing morphology based on migratory strategy.
Hannah Roodenrijs +8 more
wiley +1 more source