Results 171 to 180 of about 13,824 (263)

Functional Morphology of the Pedal Musculature and Grip Force Estimation in the Red‑and‑Green Macaw (Ara chloropterus Gray, 1859)

Journal of Morphology, Volume 287, Issue 8, August 2026.
Integration of detailed hindlimb anatomy with biomechanical analyses demonstrates that pedal performance in the red‐and‐green macaw is driven by specialized muscle architecture and force distribution. Hypertrophy of digit IV flexor musculature, together with modifications of the intrinsic and extensor muscles, enhances grasping stability, climbing, and
Sérgio Roberto Posso, Vinicius Camargo Tavares, Ana Caroline M. Barbosa   +2 more
wiley   +1 more source

Changing food availability and its effect on the heritability of offspring size in woodland passerine birds. [PDF]

J Anim Ecol
Vatka E, Orell M, Rytkönen S, Merilä J.   +3 more
europepmc   +1 more source

Shared foraging behaviors between hyenas and hominins in the Middle Paleolithic Levant: New evidence from Geula Cave, Israel

Journal of Quaternary Science, Volume 41, Issue 6, Page 896-914, August 2026.
ABSTRACT While competition with large carnivores is likely to have shaped Middle Paleolithic hominins' subsistence behavior, palimpsested human and carnivore accumulations render the signal challenging to isolate. This study presents a detailed zooarchaeological and taphonomic analysis of a non‐anthropogenic faunal assemblage from a MIS 5 (~130–80 ka ...
Meir Orbach, Omry Barzilai, Israel Hershkovitz, Ma'ayan Lev, Reuven Yeshurun   +4 more
wiley   +1 more source

A new species of the genus <i>Puto</i> Signoret (Hemiptera, Coccomorpha, Putoidae) from Tibet in China. [PDF]

Zookeys
Li YA, Zheng X, Zong S, Xu H.
europepmc   +1 more source

Environmental factors associated with nesting habits and age shape the composition and connection between skin and uropygial gland microbiomes of birds

Journal of Animal Ecology, Volume 95, Issue 8, Page 1435-1452, August 2026.
This study provides new insights into how ecological conditions influence the evolution of host‐associated symbiotic communities and their functional roles. The findings suggest that pathogen pressures linked to nesting habits in birds shape bacterial communities of the uropygial gland, and their connection with the skin microbiome, where the ...
Ester Martínez‐Renau, Kasun H. Bodawatta, Antonio M. Martín‐Platero, Manuel Martín‐Vivaldi, María Dolores Barón, Cristina Ruiz‐Castellano, Manuel Martínez‐Bueno, Knud A. Jønsson, Michael Poulsen, Juan José Soler   +9 more
wiley   +1 more source

Breeding Biology of the Twite <i>Linaria flavirostris</i> in the North-Eastern Qinghai-Tibet Plateau, with Special Reference to Life-History Variation Across Latitudes and Altitudes. [PDF]

Animals (Basel)
Yan S, Zhang B, Li S.
europepmc   +1 more source

The predatory behavior of ants: an impressive panoply of morphological adaptations

Insect Science, Volume 33, Issue 4, Page 1256-1284, August 2026.
This review focuses on predation in ants, showing the wide diversity of cases from solitary foraging to group hunting tactics, as well as the evolution of mandible shape frequently adapted to capture specific prey. Although most ants are generalist feeders, finding their sugary substances directly on plants or indirectly via sap‐sucking insects, some ...
Alain Dejean, Xim Cerdá, Jérôme Orivel, Frédéric Azémar, Alexander L. Wild, Bruno Corbara, Axel Touchard   +6 more
wiley   +1 more source

High prevalence but low concentrations of blood lead (Pb) levels among trumpeter swans in central North America. [PDF]

Ecotoxicology
Wolfson DW, Fieberg JR, Andersen DE.
europepmc   +1 more source

A Century Later: Taxonomic Review of the Neotropical Genus Hyptiocheta Becker, 1922 (Diptera: Dolichopodidae), With Description of Three New Andean Species

Austral Entomology, Volume 65, Issue 3, August 2026.
ABSTRACT The previously monotypic Neotropical genus Hyptiocheta Becker, 1922 is reviewed. Hyptiocheta convexa Becker, 1922 is redescribed, and three new species are described and illustrated from South America: H. archaeoptera Quevedo, Soares & Lamas sp. nov. (Ecuador), H. chuspi Quevedo, Soares & Gutiérrez‐Bustamante sp. nov. (Peru) and H.
Lucas Quevedo, Matheus M. M. Soares, Silvia Gutiérrez‐Bustamante, Carlos J. E. Lamas, Renato S. Capellari   +4 more
wiley   +1 more source

Two New Troglobitic Species of <i>Giupponia</i> Pérez-González & Kury, 2002 (Opiliones: Gonyleptoidea) from Caves of Bahia, Northeastern Brazil. [PDF]

Animals (Basel)
Gallão JE, Bichuette ME, Kury AB, Hara MR.   +3 more
europepmc   +1 more source