Results 111 to 120 of about 4,582 (192)

Exploring amphibian wealth: An inventory of anuran species in Lake Cuipari, Loreto, Peru

open access: yesActa Scientiarum: Biological Sciences
This study aimed to document the diversity of amphibians in Lake Cuipari, Loreto, Peru, as baseline information to support conservation strategies and promote sustainable ecotourism.
José Seijas-Díaz   +5 more
doaj   +1 more source

Excretion patterns of coccidian oocysts and nematode eggs during the reproductive season in Northern Bald Ibis (Geronticus eremita) [PDF]

open access: yes, 2016
Individual reproductive success largely depends on the ability to optimize behaviour, immune function and the physiological stress response. We have investigated correlations between behaviour, faecal steroid metabolites, immune parameters, parasite ...
A Azpiroz   +105 more
core   +1 more source

Vulnerabilidad relativa de tetrápodos en la Reserva Arroyo Zabala (Buenos Aires, Argentina) [PDF]

open access: yes, 2012
Los tetrápodos poseen características de vulnerabilidad adecuadas para centrar en ellos prioridades de gestión y protección. El objetivo fue determinar la vulnerabilidad relativa de los anfibios, reptiles y mamíferos con distribución comprobada o ...
Kristensen, María Julia   +1 more
core   +1 more source

Temperature exposure and possible thermoregulation strategies in the Titicaca water frog Telmatobius culeus, a fully aquatic frog of the High Andes [PDF]

open access: yes, 2018
Temperature has an important effect on amphibians, influencing virtually all physio logical systems. Thermoregulation is used to manage unfavourable thermal conditions, but has been poorly studied in aquatic amphibians, and no information is available ...
Callapa, Gabriel   +2 more
core   +1 more source

Understanding the role of clonal integration in plant invasions: an experimental study with "Carpobrotus sp." [PDF]

open access: yes, 2015
[Resumen] Las invasiones biológicas representan una de las principales amenazas para la conservación de la biodiversidad. Los mecanismos implicados en las invasiones biológicas son actualmente un tema muy estudiado en ecología.
Portela Carballeira, Rubén
core   +1 more source

Characterisation of major histocompatibility complex class I genes in Japanese Ranidae frogs. [PDF]

open access: yes, 2016
The major histocompatibility complex (MHC) is a key component of adaptive immunity in all jawed vertebrates, and understanding the evolutionary mechanisms that have shaped these genes in amphibians, one of the earliest terrestrial tetrapods, is important.
IGAWA Takeshi   +7 more
core   +2 more sources

Evidence of mutagenic and lethal effects of herbicides on Amazonian frogs [PDF]

open access: yesActa Amazonica
Amphibians are excellent bioindicators because they are sensitive to chemical pollution and can indicate ecosystem changes due to the presence of or exposure to chemical compounds. Here we report evidence of the impact of herbicides, including glyphosate,
Lucas FERRANTE, Philip M. FEARNSIDE
doaj   +2 more sources

Antiproliferative activity of Rhinella marina and Rhaebo guttatus venom extracts from Southern Amazon

open access: yesToxicon, 2013
The venom of amphibians is a fascinating source of active substances. In view of their medical importance and aiming to explore the amazing Brazilian biodiversity, we conducted bioprospecting of antiproliferative activity in extracts of Rhinella marina and Rhaebo guttatus toads occurring in the Southern Amazon of Mato Grosso, Brazil.
Ferreira, Paulo Michel Pinheiro   +9 more
openaire   +2 more sources

Ochoterenella esslingeri n. sp. (Nematoda: Onchocercidae: Waltonellinae) from Bokermannohyla luctuosa (Anura: Hylidae) in Minas Gerais, Brazil, with notes on Paraochoterenella Purnomo & Bangs, 1999

open access: yesParasite, 2012
The waltonelline Ochoterenella esslingeri n. sp., a filarial parasite of the anuran Bokermannohyla luctuosa in Minas Gerais, Brazil is described. Several characters distinguish this new species from the 15 species presently included in the genus: the ...
Souza Lima S.   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy