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Variation and Sexual Dimorphism of Body Size in the Plateau Brown Frog along an Altitudinal Gradient

Variation and Sexual Dimorphism of Body Size in the Plateau Brown Frog along an Altitudinal Gradient
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摘要 Variation in body size and sexual size dimorphism(SSD) can have important consequences for animal ecology, behavior, population dynamics and the evolution of life-history traits. Organisms are expected to be larger in colder climate(i.e., Bergmann's rule) and SSD varies with body size(i.e., Rensch's rule). However, the underlying mechanisms are still elusive. The plateau brown frog(Rana kukunoris), a medium-sized anuran species with femalebiased SSD, is endemic to the Qinghai-Tibetan Plateau(QTP). From 1797 m(Maoxiang'ping) to 3453 m(Heihe'qiao) in the eastern margin of the QTP, we surveyed 10 populations of R. kukunoris and collected phalanges and snout vent length(SVL) data for 258 adult individuals(199 males versus 59 females). Based on these data, we explored how body size and SSD varying along the altitudinal gradient and examined the corresponding effects of temperature. We found body size to be larger at higher altitude for males but not for females, with likely effects from the temperature on the variation in male body size. Sex differences in growth rates may be the main cause of the variation in SSD. Our results suggested that only males follow the Bergmann's rule and variation in SSD of R. kukunoris do not support the Rensch's rule and its inverse. Therefore, the variations of body size can be different between sexes and the applicability of both Bergmann's rule and Rensch's rule should depend on species and environment where they live. Variation in body size and sexual size dimorphism(SSD) can have important consequences for animal ecology, behavior, population dynamics and the evolution of life-history traits. Organisms are expected to be larger in colder climate(i.e., Bergmann's rule) and SSD varies with body size(i.e., Rensch's rule). However, the underlying mechanisms are still elusive. The plateau brown frog(Rana kukunoris), a medium-sized anuran species with femalebiased SSD, is endemic to the Qinghai-Tibetan Plateau(QTP). From 1797 m(Maoxiang'ping) to 3453 m(Heihe'qiao) in the eastern margin of the QTP, we surveyed 10 populations of R. kukunoris and collected phalanges and snout vent length(SVL) data for 258 adult individuals(199 males versus 59 females). Based on these data, we explored how body size and SSD varying along the altitudinal gradient and examined the corresponding effects of temperature. We found body size to be larger at higher altitude for males but not for females, with likely effects from the temperature on the variation in male body size. Sex differences in growth rates may be the main cause of the variation in SSD. Our results suggested that only males follow the Bergmann's rule and variation in SSD of R. kukunoris do not support the Rensch's rule and its inverse. Therefore, the variations of body size can be different between sexes and the applicability of both Bergmann's rule and Rensch's rule should depend on species and environment where they live.
出处 《Asian Herpetological Research》 SCIE CSCD 2015年第4期291-297,共7页 亚洲两栖爬行动物研究(英文版)
基金 supported by the National Natural Science Foundation of China(Nos.31270568 31572290) the Youth Innovation Promotion Association CAS(2015304) the Sichuan Province Distinguished Youth Fund(2014JQ0056)
关键词 Altitudinal gradient Bergmann's rule body size variation Qinghai-Tibetan Plateau Rana kukunoris Rensch's rule sexual size dimorphism Altitudinal gradient, Bergmann's rule, body size variation, Qinghai-Tibetan Plateau, Rana kukunoris,Rensch's rule, sexual size dimorphism
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参考文献44

  • 1Andersson M. B. 1994. Sexual selection. Princeton University Press.
  • 2Ashton K. G. 2002. Do amphibians follow Bergmann's rule? Can J Zoo, 80(4): 708--716.
  • 3Ashton K. G., Feldman C. R. 2003. Bergmann's rule in nonavian reptiles: Turtles follow it, lizards and snakes reverse it. Evolution, 57(5): 1151-1163.
  • 4Ashton K. G., Tracy M. C., de Queiroz A. 2000. Is Bergmann's rule valid for mammals? Am Nat, 156(4): 390-415.
  • 5Bergmann C. 1848. Uber die Verhaltnisse der Warmeokonomie der Thiere zu ihrer Grosse.
  • 6Blackburn T. M., Gaston K. J., Loder N. 1999. Geographic gradients in body size: A clarification of Bergmann's rule. Divers Distrib, 5(4): 165-174.
  • 7Bohonak A. J., van der Linde K. 2004. RMA: Software for reduced major axis regression, Java version. Website: http:// www.kimvdlinde cornlprofessional/rma html:.
  • 8Chen W., Tang Z., Fan X., Wang Y., Pike D. 2013a. Maternal investment increases with altitude in a frog on the Tibetan Plateau. J Evol Biol, 26(12): 2710-2715.
  • 9Chen W., Wang X., Fan X. 2013b. Do anurans living in higher altitudes have higher prehibernation energy storage? Investigations from a high-altitude frog. Herpetol J, 23(1): 45-49.
  • 10Chen W., Yu T. L., Lu X. 211. Age and body size of Rona kukunoris, a high-elevation frog native to the Tibetan plateau. Herpetol J, 21(2): 149-151.
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