Results 81 to 90 of about 7,652 (157)

Occurrence and distribution of sarcoptic mange in wild Neotropical canids

open access: yesMedical and Veterinary Entomology, EarlyView.
Sarcoptic mange affects most Neotropical canid species across multiple countries. It represents a widespread yet largely overlooked conservation threat with potential for cross‐species transmission. Coordinated monitoring and management efforts are needed to understand and mitigate its impacts. Abstract Sarcoptic mange, a contagious skin disease caused
Luan de Jesus Matos de Brito   +1 more
wiley   +1 more source

El Estudio de la Zoología

open access: yesActa Zoológica Lilloana, 1979
Leído en el Acto Inaugural del VII Congreso Latinoamericano de Zoología, Tucumán, 22 de mayo de 1977. "Cualquier personas que se interese un poco en sí misma, ya es un poco zoólogo".
Jorge N. Artigas
doaj  

Fish Assemblages in an Urbanized Neotropical Basin: Influence of Environmental Factors Across Dry and Rainy Periods

open access: yesInternational Review of Hydrobiology, Volume 111, Issue 2, December 2026.
ABSTRACT This study investigated the effects of season and environmental disturbances on fish communities in neotropical rivers of the Sorocaba basin, a Sub‐Basin of the Paraná River in Southeast Brazil, based on sampling 1196 individuals from 49 species, including two non‐native and one threatened with extinction.
Natalia S. Alves   +2 more
wiley   +1 more source

Beyond Occurrence: Evidence Gaps for Non‐Native Freshwater Fishes in Brazilian Drylands

open access: yesEcology of Freshwater Fish, Volume 35, Issue 4, October 2026.
ABSTRACT Non‐native freshwater fishes are widely reported in inland waters, but occurrence records are often interpreted together with stronger evidence of establishment, reproduction, spread, pathways and impacts. This can overstate what published records support, especially in regions where reservoirs, river‐basin transfers and artificial ...
Jônnata Fernandes de Oliveira   +2 more
wiley   +1 more source

Comparative and functional anatomy of masticatory muscles and bite force in opossums (Didelphimorphia, Didelphidae)

open access: yesThe Anatomical Record, Volume 309, Issue 9, Page 2346-2367, September 2026.
We describe the functional anatomy of masticatory muscles in nine opossums, finding a generalized anatomical pattern with differences related to skull morphology. Variation in quantitative myological data and estimated bite force was mostly related to size, and the increase in bite force supports dietary diversification associated with size increase ...
Juann A. F. H. Abreu, Diego Astúa
wiley   +1 more source

Systematics of Marmosa Subgenus Micoureus With Emphasis in ‘rapposa’ Group (Didelphidae, Marmosini): Geographic Variation and Revalidation of M. budini

open access: yesZoologica Scripta, Volume 55, Issue 5, Page 681-692, September 2026.
ABSTRACT Micoureus is the most species‐rich subgenus within the genus Marmosa. Conflicting arrangements regarding the number of species comprising this subgenus have been proposed and the validity of M. budini has been debated. Here, we used an approach integrating genetic and morphological data were conducted to reanalyze the ‘rapposa’ group ...
Maria Clara Santos Ribeiro   +3 more
wiley   +1 more source

Comparative Analysis of Correlative Modeling Methods in Predicting North American Bird Abundance

open access: yesEcology and Evolution, Volume 16, Issue 8, August 2026.
This study compares nine ecological niche model (ENM) methods to predict North American bird abundance and finds positive correlations between environmental suitability and abundance. Results highlight the potential of ENMs for abundance inference, with newer methods showing good performance and demonstrating that simpler data inputs can be effective ...
Jazmín Escobar‐Luján   +3 more
wiley   +1 more source

Testing the Dry Refuge Model: Paleoecological Insights From Late Pleistocene Gomphotheres in Ecuador

open access: yesEcology and Evolution, Volume 16, Issue 8, August 2026.
We present paleontological evidence that may prove the Dry Refuge Model in Ecuador during the Late Pleistocene. ABSTRACT Paleoenvironmental records indicate that Neotropical regions near the Equator experienced reduced rainfall during the Last Glacial Maximum (LGM). However, some records show conflicting environmental signals.
Erwin González‐Guarda   +9 more
wiley   +1 more source

What do We Mean by Environmental Heterogeneity? Toward A Mechanistically Explicit and Scale‐Dependent Framework

open access: yesEcology and Evolution, Volume 16, Issue 8, August 2026.
We synthesized 360 studies on environmental heterogeneity (EH) across taxa, regions, and disciplines. Only 10% of studies explicitly defined EH, and definitions were predominantly descriptive. We identify four operational interpretations of EH and propose a Research Roadmap linking EH metrics to five mechanistic hypotheses with testable predictions ...
Iván Hérnandez‐Chávez   +3 more
wiley   +1 more source

Comparative Morphology and Homology of the Hyoid Apparatus and Associated Muscles in Beloniform Fishes (Teleostei: Atherinomorpha)

open access: yesJournal of Morphology, Volume 287, Issue 8, August 2026.
Homology of the branchiostegals rays in atherinomorph fishes demonstrated by the position of the rays relative to the interhyoideus muscle. In beloniform outgroups, above, the two groups of branchiostegal rays are separated by the interhyoideus. In beloniform fishes, below, only one group of branchiostegal rays is present.
Daniel N. Lumbantobing, Lynne R. Parenti
wiley   +1 more source

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