Results 21 to 30 of about 10,798 (215)

Presence of an alien turtle accelerates hatching of common frog (Rana temporaria) tadpoles [PDF]

open access: yesNeoBiota, 2022
The presence of a predator affects prey populations either by direct predation or by modifying various parts of their life history. We investigated whether the hatching time, developmental stage, and body size at hatching of common frog (Rana temporaria)
Magda Vodrážková   +3 more
doaj   +3 more sources

Evolutionary Divergence in Developmental Strategies and Neuromodulatory Control Systems of Two Amphibian Locomotor Networks [PDF]

open access: yes, 2004
Attempts to understand the neural mechanisms which produce behaviour must consider both prevailing sensory cues and the central cellular and synaptic changes they direct. At each level, neuromodulation can additionally shape the final output.
Buchanan, James T.   +3 more
core   +2 more sources

Three brown frog species in Denmark have different abilities to colonise new ponds [PDF]

open access: yesHerpetozoa
For 29 consecutive years, the populations of three species of brown frogs, Rana arvalis, R. dalmatina and R. temporaria, were monitored in an open area in South Zealand, Denmark, with no direct influence of agriculture.
Kåre Fog
doaj   +3 more sources

Determination and Chemometrics-Assisted Comparative Analysis of Active Components in Different Tissue of Rana chensinensis

open access: yesSeparations, 2021
In this study, the chemical composition of different tissues of Rana temporaria chensinensis David derived from the same individual was analyzed by comparative approach.
Jianqiu Zhang   +7 more
doaj   +1 more source

Genome-Wide Characterization of Sex-Linked Regions in the Sangzhi Horned Toad (Boulenophrys sangzhiensis) Reveals Complex Sex Determination Mechanisms. [PDF]

open access: yesMol Ecol Resour
ABSTRACT Sex chromosomes in amphibians exhibit substantial variability and often remain largely homomorphic, providing a powerful system for studying sex determination. The Sangzhi horned toad (Boulenophrys sangzhiensis) is an ideal model, but limited genomic resources have hindered insights into sex determination mechanisms.
Huang CH   +8 more
europepmc   +2 more sources

Oxidative phosphorylation efficiency, proton conductance and reactive oxygen species production of liver mitochondria correlates with body mass in frogs [PDF]

open access: yes, 2015
ody size is a central biological parameter affecting most biological processes (especially energetics) and mitochondria is a key organelle controlling metabolism and is also the cell's main source of chemical energy.
Dumet, A.   +5 more
core   +3 more sources

Соntent of the heavy metal in the organism of brown frogs of the city zone of Kiev

open access: yesVìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Bìologìâ, Ekologìâ, 2007
The content and distribution of heavy metals (Pb, Cd, Zn, Cu, Cr) in organs and tissues of Rana temporaria and R. arvalis from biotopes near some reservoirs in the city zone of Kyiv are studied.
V. I. Mozhanovskyi   +2 more
doaj   +1 more source

Black-spotted pond frog Pelophylax nigromaculatus as a new host for the renal coccidian genus Hyaloklossia (Alveolata: Apicomplexa)

open access: yesInternational Journal for Parasitology: Parasites and Wildlife, 2022
Hyaloklossia Labbé, 1896 (Apicomplexa: Sarcocystidae) is a renal coccidium that infects anuran species. The genus consists of two species: H. lieberkuehni, recorded from Pelophylax kl. esculentus, Pelophylax ridibundus, and Rana temporaria in Europe; and
Toshihiro Tokiwa   +3 more
doaj   +1 more source

Ants biting amphibians: A review and new observations [PDF]

open access: yes, 2019
Antagonistic interactions between insects and amphibians are the subject of many scientific articles, mostly concerning amphibian predation on insect, but many fewer examples exist of the opposite situation.
Kaczmarski, Mikołaj   +2 more
core   +2 more sources

Global gene expression analysis provides insight into local adaptation to geothermal streams in tadpoles of the Andean toad Rhinella spinulosa [PDF]

open access: yes, 2017
Indexación: Web of Science; Scopus.The anuran Rhinella spinulosa is distributed along the Andes Range at altitudes that undergo wide daily and seasonal variation in temperature.
Allende, M.L.   +11 more
core   +1 more source

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