Abundance variations and life history traits of two sympatric species of Neotropical annual fish (Cyprinodontiformes: Rivulidae) in temporary ponds of southern Brazil
作者： Luis Esteban Krause Lanés , Friedrich Wolfgang Keppeler , Leonardo Maltchik
DOI: 10.1080/00222933.2013.862577
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摘要: We investigated abundance variations and life history traits (body size, sex ratio, length–weight relationships condition factor) of two species annual fish (Austrolebias minuano Costa Cheffe Cynopoecilus fulgens Costa) in temporary ponds southern Brazil. Six samples were taken from small during three seasons over 2 years (2008–2009). A total 104 individuals A. 433 C. collected. The both tended to decrease autumn spring the 2 years. overall ratio 1.0 male 1.8 females 1 1.04 females, respectively. Juveniles occurred only years no adult was observed this season. While relationship indicated hyperallometric growth, values close isometric growth.
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