期刊名称：EQA - International Journal of Environmental Quality
印刷版ISSN：2281-4485
出版年度：2009
卷号：1
期号：1
页码：51-56
DOI：10.6092/issn.2281-4485/3807
语种：English
出版社：Alma Mater Studiorum - University of Bologna
摘要：This study aimed to determine the morphological stress experienced by Rana perezi , an anuran endemic to the Iberian Peninsula, in an agricultural landscape with different levels of management impact, by using the fluctuating asymmetry (FA) of its skeleton. Tibio-fibula, a highly functional trait, had the lowest FA level, whereas radio-ulna was the most asymmetric. This indicates that traits under directional selection are more prone to reflect stress than the functionally important ones. Metatarsus and radio-ulna were less able to cope with the stress in rice fields than in reservoirs. In ontogeny FA level decreased towards the adult stage suggesting that the mechanism of developmental stability buffered against the stress. In conclusion metatarsal and radio-ulna asymmetry of R. perezi juveniles can be used to assess environmental disturbances in agricultural landscapes.
其他摘要：This study aimed to determine the morphological stress experienced by Rana perezi, an anuran endemic to the Iberian Peninsula, in an agricultural landscape with different levels of management impact, by using the fluctuating asymmetry (FA) of its skeleton. Tibio-fibula, a highly functional trait, had the lowest FA level, whereas radio-ulna was the most asymmetric. This indicates that traits under directional selection are more prone to reflect stress than the functionally important ones. Metatarsus and radio-ulna were less able to cope with the stress in rice fields than in reservoirs. In ontogeny FA level decreased towards the adult stage suggesting that the mechanism of developmental stability buffered against the stress. In conclusion metatarsal and radio-ulna asymmetry of R. perezi juveniles can be used to assess environmental disturbances in agricultural landscapes.
