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Now showing items 31-40 of 132
Molecular phylogeny of Neotropical rock frogs reveals a long history of vicariant diversification in the Atlantic forest
(Molecular Phylogenetics And Evolution, 2018-05-01) [Artigo]
The Brazilian Atlantic coastal forest is one of the most heterogeneous morphoclimatic domains on earth and is thus an excellent region in which to examine the role that habitat heterogeneity plays in shaping diversification ...
Current advances in immunological studies on the vespidae venom antigen 5: Therapeutic and prophylaxis to hypersensitivity responses
(Toxins, 2018-08-01) [Resenha]
Although systemic reactions caused by allergenic proteins present in venoms affect a small part of the world population, Hymenoptera stings are among the main causes of immediate hypersensitivity responses, with risk of ...
Are native bees and Apis mellifera equally efficient pollinators of the rupestrian grassland daisy Aspilia jolyana (Asteraceae)?
(Acta Botanica Brasilica, 2018-07-01) [Artigo]
Most angiosperms rely on animals for pollination, and insects, especially bees, are the most frequent pollinators. Many native Neotropical plants are frequently visited by the invasive honeybee (Apis mellifera), but its ...
A neglected name and new synonym in Barbosella (Pleurothallidinae, orchidaceae)
(Phytotaxa, 2018-02-27) [Artigo]
During a study to monograph the Barbosella species from Brazil, historical material and protologues of various species were analyzed. Among these, the type material of B. perinii, a name largely overlooked since its ...
Unidirectional transitions in nectar gain and loss suggest food deception is a stable evolutionary strategy in Epidendrum (Orchidaceae): insights from anatomical and molecular evidence
(Bmc Plant Biology, 2018-09-04) [Artigo]
Background: Nectar gain and loss are important flower transitions observed in angiosperms, and are particularly common in orchids. To understand such transitions, the availability of detailed anatomical data and species-level ...
The effects of priming exercise on the (V)over dotO(2) slow component and the time-course of muscle fatigue during very-heavy-intensity exercise in humans
(Applied Physiology Nutrition And Metabolism, 2018-09-01) [Artigo]
We hypothesized that prior exercise would attenuate the muscle fatigue accompanied by oxygen uptake slow-component ((V)over dotO(2SC)) behavior during a subsequent very-heavy (VH)-intensity cycling exercise. Thirteen healthy ...
Seasonal flooding, topography, and organic debris interact to influence the emergence and distribution of seedlings in a tropical grassland
(Biotropica, 2018-07-01) [Artigo]
In seasonally flooded wetlands, inundation and associated organic debris deposition followed by a drawdown period can promote plant community diversity across space and time. Post-flood regeneration might be influenced by ...
Padrões de diversidade genética e filogeografia de Tillandsia aeranthos (Lois.) L.B. Smith (Bromeliaceae)
(2018-05-17) [Dissertação de mestrado]
O continente sul-americano é o mais biodiverso da Terra, sendo palco da interação de complexos processos climáticos e geológicos que moldaram sua biota de forma muito heterogênea. Um crescente numero de estudos estudos de ...
A variação dos parâmetros hematológicos do sabiá-barranco (Turdus leucomelas) ao longo de um ciclo anual
(2018-05-14) [Dissertação de mestrado]
O ciclo de vida das aves, assim como o da maioria dos vertebrados, é composto de uma sequência progressiva e unidirecional de estágios, como a reprodução e as mudas de penas de voo, denominados Estágios de História de Vida ...