Nuria Polo-Cavia

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Sexual signals can be evolutionarily stable if they are honest and condition-dependent or costly to the signaler. One possible cost is the existence of a trade-off between maintaining physiological health and elaboration of ornaments, such that only healthier individuals may afford to produce more elaborate sexual displays. We analyzed the relationship(More)
Righting behavior of aquatic turtles might be subject to coadaptation pressures between preferred basking temperature and locomotion, given that it is mainly performed on land and may critically determine the survival of turtles. We analyzed the effect of body temperature (T(b)) on righting performance of two species of freshwater turtles, the endangered(More)
Sexual signals can be evolutionarily stable if they are honest and condition dependent or costly to the signaler. One possible cost is the existence of a trade-off between maintaining the immune system and the elaboration of ornaments. This hypothesis has been experimentally tested in some groups of animals but not in others such as turtles. We(More)
Thermoregulatory behavior and feeding status are strongly related in ectotherms. A trade-off between maintenance of energy balance and digestion efficiency has been recently proposed to affect thermoregulation in these animals. On the other hand, competition for basking sites has been described between Iberian turtles and the introduced red-eared slider(More)
Asymmetry in motor patterns is present in a wide variety of animals. Many lateralized behaviors seem to depend on brain asymmetry, as it is the case of different tasks associated to food handling by several bird and mammal species. Here, we analyzed asymmetry in handling behavior of pine cones by red squirrels (Sciurus vulgaris). Red squirrels devote most(More)
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