Results 41 to 50 of about 5,753 (220)
Avian Conservation and Ecology, 2018 Most hummingbird species are distributed in tropical lowlands and mountains with few species reaching the alpine environments of high mountain peaks. Field surveys were conducted in nine alpine sites across four of the highest volcanoes in central Mexico
Libertad Arredondo-Amezcua +7 more
doaj +1 more source
FXTAS and the Spectrum of FMR1 Premutation‐Associated Phenotypes in Latin America: A Scoping Review
Movement Disorders Clinical Practice, EarlyView.Abstract Background Fragile X–associated tremor/ataxia syndrome (FXTAS) is a late‐onset neurodegenerative disorder caused by FMR1 premutation expansions (55–200 CGG repeats). Although well described in populations of predominantly European ancestry, FXTAS remains poorly characterized in Latin America due to limited awareness, restricted access to ...
Amy Schmidmajer +6 more
wiley +1 more source
Nexus file for: Molecular diversification of hummingbirds
, 2022 The tempo of species diversification in large clades can reveal fundamental evolutionary mechanisms that operate on large temporal and spatial scales. Hummingbirds have radiated into a diverse assemblage of specialized nectarivores comprising 338 species,
McGuire, Jimmy
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Nordic Journal of Botany, EarlyView.Sinningia pampeana is a new rupicolous species from the rocky outcrops of the Pampa biome in southern Brazil and Uruguay. Morphological analyses based on herbarium material, field observations, and detailed illustrations support its recognition as a distinct species from Sinningia sellovii.
Gabriel Emiliano Ferreira +4 more
wiley +1 more source
Floral resource‐mediated multilayer networks: structure and pollinators' roles
Oikos, EarlyView.Resource availability shapes interactions among free‐living species, particularly in plant–pollinator mutualisms, where the composition of floral resource types influences pollinator foraging. Bees, known for utilizing a broad array of floral resources, play a crucial role in these dynamics. However, how the structure of interaction networks vary among
Caio S. Ballarin +2 more
wiley +1 more source
Brazilian Journal of BiologyWe studied hummingbirds and their food plants in an area of caatinga vegetation. We specifically examined their seasonal use of this habitat, migratory and non-migratory status, their foraging strategies and community roles The study was conducted in an ...
FMG Las-Casas +2 more
doaj +1 more source
Journal of Animal Ecology, EarlyView.Migrating songbirds regularly use shallow torpor (up to 98% of birds for some species) to save energy (up to 42%) during inactive periods. This Ruby‐crowned Kinglet Corthylio calendula that was captured after a spring snowstorm highlights the value of being able to save energy when encountering unfavourable conditions.
Ryan A. C. Leys +2 more
wiley +1 more source
EcologiesPlant–animal interactions have shaped much of Earth’s biodiversity. Their structure probably results from a combination of neutrality and constraints imposed by species’ traits, such as phenotypes, phenologies, and spatial distributions, which may affect
Sergio Díaz-Infante +3 more
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Revista Mexicana de Biodiversidad, 2011 The global climatic change could cause, in some places, appearance of meteorological phenomena considered rare. If we understand the effect of these phenomena on birds we can understand how birds respond to weather changes. We report here the effect of a
Román Díaz-Valenzuela +1 more
doaj +1 more source
Improving spine‐based age estimation in centrarchid fishes using otolith‐derived training sets
Journal of Fish Biology, EarlyView.Abstract Nonlethal age determination is a priority in fish biology contexts where sacrifice is restricted, but estimates derived from nonlethally attainable structures tend to suffer from poor precision and accuracy relative to necessarily lethal, otolith‐derived estimates.
Matthew P. Woo +4 more
wiley +1 more source