Results 61 to 70 of about 10,798 (215)

Using conventional F-statistics to study unconventional sex-chromosome differentiation. [PDF]

, 2017
Species with undifferentiated sex chromosomes emerge as key organisms to understand the astonishing diversity of sex-determination systems. Whereas new genomic methods are widening opportunities to study these systems, the difficulty to separately ...
Dufresnes, C., Rodrigues, N.
core   +3 more sources

River‐Floodplain Metacommunities as Complex Networks: The Interplay of Species Interactions, Dispersal, and Environment

Environmental DNA, Volume 8, Issue 1, January–February 2026.
A network‐based framework reveals how species interactions, environmental conditions, and dispersal shape heterogeneous river‐floodplain metacommunities. Using spatiotemporal eDNA data, Bayesian network learning, and graph theory, we identify sub‐communities and key connector species, highlighting mechanisms of dynamic community assembly and informing ...
Andrea Funk, István Czeglédi, Tibor Erős, Lukas Landler, Paul Meulenbroek, Didier Pont, Sonia Recinos Brizuela, Alice Valentini, Thomas Hein   +8 more
wiley   +1 more source

SECOND INTERNATIONAL SYMPOSIUM ON RANAVIRUSES:: A NORTH AMERICAN HERPETOLOGICAL PERSPECTIVE [PDF]

, 2014
Ranaviruses are large double stranded DNA viruses of poikilothermic vertebrates including amphibians, reptiles and fish. In North America, ranaviral disease and ranavirus-related die-off events have been documented in all three classes.
Brunner, Jesse L., Duffus, Amanda L.J., Gray, Matthew J., Miller, Debra L.   +3 more
core   +2 more sources

Multiple Threats Have Overlapping Impacts Across Ecological Levels in Freshwater Ecosystems

Freshwater Biology, Volume 71, Issue 1, January 2026.
ABSTRACT Changes driven by climate change, biological invasion, land‐use change, pollution and overexploitation are decreasing the resilience of freshwater ecosystems worldwide. While the impact of these threats is widely recognised, a critical gap remains in systematically quantifying their relative effects across ecological levels, which is essential
Tauany Rodrigues, Vinicius F. Farjalla, Juliana S. Leal, Helena A. Prado, Aliny P. F. Pires   +4 more
wiley   +1 more source

An emerging viral pathogen truncates population age structure in a European amphibian and may reduce population viability [PDF]

PeerJ, 2018
Infectious diseases can alter the demography of their host populations, reducing their viability even in the absence of mass mortality. Amphibians are the most threatened group of vertebrates globally, and emerging infectious diseases play a large role ...
Lewis J. Campbell, Trenton W.J. Garner, Giulia Tessa, Benjamin C. Scheele, Amber G.F. Griffiths, Lena Wilfert, Xavier A. Harrison   +6 more
doaj   +2 more sources

Biomonitoring of the genotoxic potential (micronucleus assay) and detoxifying activity (EROD induction) in the River Dadou (France), using the amphibian Xenopus laevis [PDF]

, 2004
Within the framework of a general survey of the water quality of the river Dadou (Tarn, France), different physicochemical parameters were measured and an inventory of the fish population was made along the water course, around the Rassisse dam.With the ...
Gauthier, Laury, Marty, Josette, Mouchet, Florence, Tardy, Emmanuelle   +3 more
core   +2 more sources

Waving Through Ontogeny: The Larval Chondrocranial Development of Staurois parvus

International Journal of Zoology, Volume 2026, Issue 1, 2026.
The vertebrate skull is a complex structure with diverse evolutionary and developmental patterns. Anuran chondrocranial development has been shown to deviate from generalized vertebrate trends, highlighting its evolutionary flexibility. This study investigates the chondrocranial development of Staurois parvus, a ranid frog, to provide insights into ...
Paul Lukas, Lipi Buch
wiley   +1 more source

The distribution of Rana temporaria L. (Amphibia) in an acidified and a non-acidified region of Norway

Fauna Norvegica
The common frog Rana temporaria L. was absent from a poorly buffered, anthropogenically acidified, inland area (Solhomfjell) of Southern Norway where the pH values of ponds and lakes ranged from 4.3 to 4.8 and the Ala concentration was usually below 150
Dag Dolmen, Inggard Blakar, Jon Kristian Skei   +2 more
doaj   +1 more source

Influence of carbon tetrachloride on the liver of tadpoles of brown frog (Rana temporaria) [Translation from: Trudy leningt.sanit.-gig.med.Inst. 82, 32-36, 1967] [PDF]

, 1981
Comparative studies of the structure and regeneration of tissues in different vertebrates make it possible to get ideas from the evolution and regeneration potential of tissues.
Grenberg, T.F.
core  

Alternative Splicing and Gene Expression Variation Underlie Population and Life History Differences in an Amphibian

Ecology and Evolution, Volume 15, Issue 11, November 2025.
Populations along anthropogenic disturbance gradients exhibit phenotypic differences, yet the mechanisms underlying these variations remain unclear. By examining gene expression and alternative splicing in wood frogs, we found significant life stage and population‐specific transcriptomic differences, though only two genes (HSP70 and Gpsm2) showed ...
Juntao Hu, Xingyue Ren, Rowan D. H. Barrett, Eman Samma, Mikolaj Sulkowski, Steven P. Brady   +5 more
wiley   +1 more source