Results 41 to 50 of about 6,007 (222)

Climate‐driven resource availability drives medium‐ and broad‐scale temporal changes in owl–prey interactions over 24 years in a semi‐arid ecosystem

Ecography, EarlyView.
Predator–prey interactions are vital to ecosystem functioning but may be disrupted by climate change. We investigated a food‐web network involving three owl species over 24 years in a semi‐arid ecosystem at Bosque Fray Jorge National Park, Chile.
Jazmin M. Quiroz‐Calizaya, Adriana Lozada, Douglas A. Kelt, Alejandra J. Troncoso, Peter L. Meserve, M. Andrea Previtali, W. Bryan Milstead, Julio R. Gutiérrez, Craig Weideman, Nicolas Gouin, Tyler R. Kartzinel, Karin Maldonado, Angéline Bertin   +12 more
wiley   +1 more source

Antarctic soil microbiomes encode structurally conserved and phylogenetically diverse beta‐lactamases

iMetaOmics, EarlyView.
An integrative metagenomic framework combining sequence, structural, and functional inference reveals a phylogenetically diverse and structurally conserved repertoire of putative beta‐lactamases across Antarctic soil microbiomes, with predominance of class A and subclass B3 enzymes and limited but detectable associations with mobile genetic elements ...
José Coche‐Miranda, Patricio Arros, Nicolás Canales, Camilo Berríos‐Pastén, Gastón Azziz, Rosalba Lagos, Julieta Orlando, Francisco P. Chávez, Andrés E. Marcoleta   +8 more
wiley   +1 more source

Trophic ecology and reproductive biology of Ageneiosus lineatus (Actinopterygii, Siluriformes, Auchenipteridae) in the middle Negro River, Brazilian Amazon [PDF]

Acta Ichthyologica et Piscatoria
Ageneiosus lineatus Ribeiro, Rapp Py-Daniel et Walsh, 2017 is a medium-sized catfish widely distributed in the Amazon and Orinoco basins. Despite its ecological relevance and potential in the ornamental fish trade, little is known about its biology. This
Chiara Lubich, Gisellen Mc Comb, Flávia Siqueira-Souza, Carlos Freitas   +3 more
doaj   +3 more sources

Total Immunoglobulin G Variation Through the Phenological Cycle of Migrant and Resident Lesser Long‐Nosed Bats (Leptonycteris yerbabuenae) in the Drylands of Mexico and Its Relationship With Bacterial Killing‐Ability of Plasma

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT Bats have unique immunological characteristics among vertebrates. Understanding how the immune system responds during the life cycle of bat populations is crucial for grasping how their defenses against infection vary during critical life events.
David Alfonso Rivera‐Ruiz, José Juan Flores‐Martínez, Carlos Rosales, Luisa I. Falcón, Marco Tulio Solano de la Cruz, Rodrigo A. Medellín, L. Gerardo Herrera M.   +6 more
wiley   +1 more source

Indirect Effects of Cattle Trampling on the Structure of Fruit-Feeding Butterfly Assemblages Inhabiting Restinga Forests in Southern Brazil

Diversity
The impacts of anthropogenic activities are increasing at alarming rates, leading to biodiversity loss and the displacement of native habitats. One of the main contributors to human disturbances is livestock farming, which degrades native habitats ...
Cristiano Agra Iserhard, Taiane Schwantz, Mariana Centeno Gallo, Marco Silva Gottschalk, Kauane Maiara Bordin   +4 more
doaj   +1 more source

Eye Darkening Under Dehydration Stress in the Neotropical Frog Boana punctata (Schneider, 1799)

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
Dehydration induces a strong and partially reversible increase in iris pigmentation in the Neotropical frog Boana punctata. The tight relationship between iris darkening and hydration state identifies ocular pigmentation as a simple, non‐invasive physiological biomarker with broad potential for assessing hydric stress in amphibian populations ...
Ricardo Reques, Eduardo F. Schaefer, Eduardo A. Sanabria, Leonardo D. Aguiar, Lorena B. Quiroga, Miguel Tejedo   +5 more
wiley   +1 more source

The presence of black vultures at the calving sites and its effects on cows’ and calves’ behaviour immediately following parturition

Animal, 2013
Black vultures (Coragyps atratus) are often present near calving sites, and under this situation they may play a positive role by removing animal carcasses and afterbirth or a negative role by attacking neonate calves or disturbing cow–calf behaviours ...
L.M. Toledo, M.J.R. Paranhos da Costa, A. Schmidek, J. Jung, J.N.S.G. Ciryllo, V.U. Cromberg   +5 more
doaj   +1 more source

Farmers versus wolves: how geographic, social cognitive, and experiential factors influence attitudes towards a predator in Italy

The Journal of Wildlife Management, EarlyView.
A survey of 426 Italian farmers reveals that tolerance toward wolves varies geographically, with northern regions showing less acceptance. Negative intentions were linked to poor knowledge, while use of preventive methods fostered positive beliefs. These findings highlight the need for region‐specific, socially informed wolf management strategies in ...
Gianluca Damiani, Sarah Droghei, Riccardo Mattea, Andrea Gallizia, Giovanna Jona Lasinio   +4 more
wiley   +1 more source

Alimentação de Auchenipterichthys punctatus (Siluriformes, Auchenipteridae) em lagos do rio Cuiuni, Amazonas, Brasil [PDF]

Neotropical Biology and Conservation, 2019
Auchenipterichthys punctatus é uma espécie de peixe muito abundante durante o período de águas baixas no rio Cuiuni, sendo objetivo deste estudo investigar a alimentação de A. punctatus em lagos desse rio. O conteúdo estomacal, o grau de repleção, índice
Eletuza Uchôa Farias, Jamerson Aguiar Santos, Sara de Castro Loebens, Hélio Daniel Beltrão, Carlos Edwar de Carvalho Freitas, Kedma Cristine Yamamoto   +5 more
doaj   +3 more sources

The Paleoenvironment of the Ndutu Bed at Olduvai Gorge in the Context of Middle Stone Age Expansion in Eastern Africa: A Multiproxy Approach to Ungulate Analyses From the Victoria Cabrera Site and Dorothy Garrod Site (MIS 5)

International Journal of Osteoarchaeology, EarlyView.
ABSTRACT The study of the Eastern African archaeological record is essential for understanding the origin and evolution of the Middle Stone Age (MSA). However, Olduvai Gorge, one of the primary regions in human evolution studies, has few sites associated with the MSA.
Juan Marín, Iván Ramírez‐Pedraza, David M. Martín‐Perea, Irene Solano‐Megías, Natalia Abellán‐Beltrán, Antonio Rodríguez‐Hidalgo, Agness Gidna, Audax Mabulla, José‐Manuel Maíllo‐Fernández   +8 more
wiley   +1 more source