A5026358552- Animal Behavior and Reproduction
- Amphibian and Reptile Biology
- Genetic diversity and population structure
- Pleistocene-Era Hominins and Archaeology
- Experimental and Theoretical Physics Studies
- Fish Ecology and Management Studies
- Date Palm Research Studies
- Archaeological and Geological Studies
- Archaeological and Historical Studies
- Chemical synthesis and alkaloids
- Turtle Biology and Conservation
- Parasite Biology and Host Interactions
- Insect and Arachnid Ecology and Behavior
Universitat de Lleida
2015-2020
The Pyrenees represent a natural laboratory for biogeographic, evolutionary and ecological research of mountain fauna as result the high variety habitats profound effect glacial interglacial periods. There is paucity studies providing detailed insight into genetic processes better knowledge on patterns diversity how they are maintained under altitude conditions. This particular interest when considering course past climate conditions glaciations in species which considered site tenacious,...
Differences in environmental conditions such as those between lakes and streams can produce phenotypic variation ultimately promote evolutionary diversification. Some species of newts salamanders occupy these habitats express alternative phenotypes: metamorphs that lose gills at metamorphosis paedomorphs retain them the adult stage. Whereas this process is facultative some species, it obligatory others, thus suggesting isolation pressures may have canalized developmental pathways. In study,...
Variations on embryonic and larval life history traits of ectotherm organisms are strongly affected by temperature conditions. However, these effects can vary between species populations depending the mechanisms that act in a determinate local habitat. In present study, we analysed several (survival, development growth rate until metamorphosis) Rana temporaria two living at different altitude (1540 2100 m) Pyrenees. Five spawns from each population were distributed common garden experiment...
Facultative paedomorphosis is a common polyphenism in newts where two alternative phenotypes can coexist: metamorphs and paedomorphs (mature with larval traits, i.e. retaining gills). This phenomenon has been reported some lacustrine populations of the Pyrenean newt (Calotriton asper). The morphology life-history traits were studied population this species occurrence facultative paedomorphosis. results showed that 24.3% adults retained gills at different levels reabsorption had smoother skin...
Demographic traits were analyzed in the Pyrenean brook newt (Calotriton asper) to evaluate whether its variability responds adaptation different habitats. In this study, life history of Calotriton asper studied nine populations living two kinds habitats Pyrenees mountains: lakes and streams. Skeletochronology was used determine age structure such as at maturity longevity. Age between sexes. The lacustrine populations, with facultative pedomorphosis, attained their earlier. sexual ranged from...