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Título: | Ontogenic differences and sexual dimorphism of the locomotor performance in a nocturnal gecko, Tarentola mauritanica |
Autor: | Oliveira, Pedro; Gomes, Verónica; Riaño, Gabriel; Rato, Catarina CSIC ORCID | Palabras clave: | Locomotor performance Ontogeny Sexual dimorphism Tarentola mauritanica |
Fecha de publicación: | 1-ene-2023 | Editor: | John Wiley & Sons | Citación: | Journal of Experimental Zoology Part A-Ecological and Integrative Physiology 339(1): 28-36 (2023) | Resumen: | Locomotion performance in reptiles is deeply associated with habitat use, escape from predators, prey capture, and territory defense. As ectotherms, this trait in lizards is extremely sensitive to body temperature (BT). However, most studies rarely look at locomotion patterns in an ontogenic perspective. The Moorish gecko, Tarentola mauritanica, was used to investigate the possible effects of distinct BTs on the locomotor performance within juveniles and adults. Not surprisingly, adult individuals significantly outperform the juveniles in speed at every BT. Moreover, except in the 30-day-old juveniles, there is a general trend for an increase of speed with BT. The comparison of these speed values with the ones obtained for diurnal lizard species, corroborates the premise that because nocturnal species are subject to low thermal heterogeneity, little selection for behavioral thermoregulation, but strong selection for high performance at relatively cool temperatures are expected. Furthermore, the higher locomotor performance in adults at 29°C, roughly coincides with previously obtained preferred BTs. However, further studies need to be conducted to build the full performance curve, and to validate the existence of coadaption between behavioral thermoregulation and thermal sensitivity of physiological performance. Finally, this study has found that adult males run significantly faster than females at the highest BTs, highlighting the importance in understanding sex differences, and its potential to drive sex-specific behaviors, ecology, and ultimately fitness. | Versión del editor: | https://doi.org/10.1002/jez.2645 | URI: | http://hdl.handle.net/10261/348456 | DOI: | 10.1002/jez.2645 | ISSN: | 2471-5638 | E-ISSN: | 2471-5646 |
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