Results 81 to 90 of about 6,007 (222)

First Non‐Invasive Monitoring of Fecal Steroids in Greater Caribbean Manatees (Trichechus manatus manatus)

Zoo Biology, EarlyView.
This study established the first fecal hormonal reference values (P4/E2) for the Greater Caribbean manatee. Using non‐invasive ELISA, the authors found no significant differences between mature and immature females, highlighting that long‐term monitoring and ultrasounds are essential to fully understand their complex reproductive cycles.
Vanessa Bermúdez‐Cardona, Roberto Sánchez‐Okrucky, José A. Sandoval‐Zárate, Nataly Castelblanco‐Martínez   +3 more
wiley   +1 more source

Optimising daily sampling of plant–bee interaction networks

Journal of Animal Ecology, EarlyView.
Daily variation in ecological interaction networks is rarely quantified due to limited temporal sampling, yet network structure may change substantially within a single day. We show that plant–bee networks exhibit strong intraday shifts in composition and structure, and that sampling distributed across key daily periods better captures network ...
Caio S. Ballarin, Jorge Isla, Blanca Arroyo‐Correa, Elena Quintero, Leandro Hachuy‐Filho, Felipe W. Amorim, Pedro Jordano   +6 more
wiley   +1 more source

Bat community assembly in the ecotone of two neotropical biodiversity hotspots is determined by environmental filtering rather than historical factors

Journal of Animal Ecology, EarlyView.
We demonstrate that environmental filtering is the primary mechanism shaping bat communities across the Cerrado–Atlantic Forest ecotone. By integrating phylogenetic diversity, environmental gradients, and coevolutionary assembly models, our study provides new insights into the processes maintaining biodiversity in a globally important transition zone ...
Daiana Cardoso Silva, Hernani F. M. Oliveira, Fabricius M. C. B. Domingos   +2 more
wiley   +1 more source

Individual Choices of Wintering Areas Drive Adult Survival Heterogeneity in a Long‐Lived Seabird

Ecology and Evolution
Seasonal migration has evolved as an adaptation for exploiting peaks of resource abundance and avoiding unfavourable climatic conditions. Differential migratory strategies and choices of wintering areas by long‐distance migratory species may impose ...
M. Genovart, R. Ramos, J. M. Igual, A. Sanz‐Aguilar, G. Tavecchia, A. Rotger, T. Militão, D. Vicente‐Sastre, B. Garcia‐Urdangarin, R. Pradel, J. González‐Solís, D. Oro   +11 more
doaj   +1 more source

The Evolution of Male Weapons Is Associated with the Type of Breeding Site in a Clade of Neotropical Frogs

Integrative Zoology, EarlyView.
Male weaponry evolution is often linked to male–male competition, but its relationship with breeding site type remains unclear. Using Leptodactylinae frogs, we found a macroevolutionary correlation between breeding site type and weapon evolution. Also, gains and losses of weapons occurred more frequently in exposed‐breeding sites, an unexpected finding.
Erika M. Santana, Daniel S. Caetano, Alexandre V. Palaoro, Glauco Machado   +3 more
wiley   +1 more source

Unravelling Evolutionary Dynamics of Female Sexual Cannibalism and Male Reproductive Strategies in Spiders

Integrative Zoology, EarlyView.
Sexual cannibalism (SC), where one mating partner consumes the other in the context of mating, is especially prevalent among spiders. However, the evolution of SC in spiders is still not fully understood. We review key hypotheses for SC and explore how female‐initiated SC has driven the evolution of various male counter‐adaptations to mitigate its ...
Simona Kralj‐Fišer, Franco Cargnelutti, Daiqin Li, Matjaž Kuntner   +3 more
wiley   +1 more source

Non-invasive image study of bone bioerosion in Spanish Civil War lime graves

Scientific Reports
Bacterial bioerosion is a key taphonomic process affecting bone remains in diverse environments. This study presents the anthropological and taphonomic study of two clandestine lime graves from the Spanish Civil War (1936–1939) with two individuals in ...
Aida Gutiérrez, Iván Rey-Rodríguez, Alba Macho-Callejo, Núria Armentano, Yolanda Fernández-Jalvo   +4 more
doaj   +1 more source

Living Low and Dry: Costs of and Resilience to Soil Hydric Stress in a Fossorial Amphisbaenian Reptile

Integrative Zoology, EarlyView.
Soil drought imposes moderate, temporary costs on a strictly fossorial amphisbaenian reptile. However, these animals seem to cope with, at least, moderately short droughts thanks to their peculiar adaptations to living in an underground environment. ABSTRACT The physiological traits of animals can be strongly influenced by climatic fluctuations, and ...
José Martín, Álvaro Navarro‐Castilla, Alejandro de la Concha, José Javier Cuervo, Isabel Barja, Pilar López   +5 more
wiley   +1 more source

La ecología espacial como punto de encuentro entre la ecología animal y vegetal. Modelos espacialmente explícitos de dispersión endozoócora

Ecosistemas, 2006
Modelos espacialmente explícitos de dispersión endozoócora. En este artículo, utilizamos los sistemas de dispersión de semillas como ejemplo para exponer la importancia de la ecología espacial en las interacciones planta-animal.
L. Santamaría, A.R. Larrinaga, A. Arceiz, J. Rodríguez Pérez   +3 more
doaj  

Availability of a Keystone Plant Resource Reduces Niche Overlap and Drives Distinct Species‐Specific Changes in Niche Breadth Among Small Rodents

Integrative Zoology, EarlyView.
We investigated how three rodent species respond to the seasonal availability of Araucaria angustifolia seeds. While Oligoryzomys spp. increased seed consumption and abundance during seed production, the more insectivorous Akodon paranaensis maintained a broader diet.
Adriana A. Perini, Emerson M. Vieira
wiley   +1 more source