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Mostrando ítems 41-50 de 142
Mudanças na paisagem e estresse biológico : alterações cromossômicas, energéticas e epigenéticas em Boana albopunctata em área agrícola e conservada no Distrito Federal
(2017-10-20)
Anfíbios, devido a características ecológicas, fisiológicas e reprodutivas, são considerados bons bioindicadores de qualidade ambiental, em diferentes níveis de organização. Com o avanço da produção agrícola no Cerrado, a ...
Potential effects of dams in the geographic range expansion of hylid frogs associated with aquatic macrophytes
(Herpetological Conservation and Biology, 2021-08)
The Fluorescent Frog (Boana punctata) and the Uruguay Harlequin Frog (Lysapsus limellum) are two hylid species found in seasonal swamps and along large rivers in South America. Despite their wide distribution in the Amazon ...
Anuran tadpoles inhabiting a fluoride-rich stream: diets and morphological indicators
(Elsevier, 2019-06)
We in situ assessed the influence of natural fluoride concentrations in lotic freshwater ecosystems on diet and morphology of Boana cordobae tadpoles. Two streams were sampled in Argentina: Los Vallecitos stream (LF-LV) ...
Helmintos parasitas de anuros hilídeos procedentes do rio Paraopeba, Brumadinho, MG.
(Universidade Estadual Paulista (Unesp), 2022-02-04)
Os anfíbios habitam diferentes ambientes ao longo de sua vida, resultando
em maior exposição a comunidades parasitárias, o que os tornam interessantes
quanto ao estudo helmintológico, entretando pouco se conhece sobre ...
Acetylcholinesterase inhibitory activity of a naturally occurring peptide isolated from Boana pulchella (Anura: Hylidae) and its analogs
(Springer, 2020-03)
Alzheimer’s disease (AD), the most common form of dementia, is a growing problem worldwide, with 10 million incident cases registered every year. The complex etiology of AD has not been clarified yet and represents an ...
Lethal and sublethal effects of the pirimicarb-based formulation Aficida® on Boana pulchella (Duméril and Bibron, 1841) tadpoles (Anura, Hylidae)
(Academic Press Inc Elsevier Science, 2018-01)
Acute lethal and sublethal toxicity of the pirimicarb-based commercial formulation Aficida® were evaluated on Boana pulchella tadpoles. Whereas mortality was used as end point for lethality, frequency of micronuclei and ...
Sensitivity of Boana pulchella (Anura: Hylidae) tadpoles to environmentally relevant concentrations of chlorpyrifos: Effects at the individual and biochemical level
(Society of Environmental Toxicology and Chemistry, 2020-01-10)
We report sublethal effects of environmentally relevant concentrations of chlorpyrifos at the individual (swimming alterations) and biochemical (esterase activities and antioxidant enzymes) levels in the Montevideo tree ...
Are the damaging effects induced by the imazethapyr formulation Pivot® H in Boana pulchella (Anura) reversible upon ceasing exposure?
(Academic Press Inc Elsevier Science, 2018-02)
In the present study, the damage recovery capabilities of Boana pulchella tadpoles after acute exposure (96 h) to 0.39 mg/L concentration of the imazethapyr (IMZT)-based herbicide formulation Pivot H (25% IMZT LC50 value) ...
Intraspecific developmental variation in the life cycle of the Andean Treefrog (Boana riojana): A temporal analysis
(Veterinary and Human Toxicology, 2019-01-20)
Intraspecific variation during the anuran larval period has been analyzed mainly in relation to the timing of metamorphosis and body size at metamorphosis. However, other traits may vary as well. We examined two developmental ...
Transient integumentary structures in Boana riojana (Anura, Hylidae) tadpoles
(Brill Academic Publishers, 2019-10-24)
Few studies focusing on embryos and/or tadpole skin morphology have described sensory transient organs whose morphological variation could indicate some taxonomical or functional correlations. We explore here some integumentary ...