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Acta Biológica Colombiana
versão impressa ISSN 0120-548X
Resumo
SEGURA-GUEVARA, FREDYS F; CONTRERAS ORTEGA, MARTHA L. e OLAYA-NIETO, CHARLES W. Length-Weight Relationship of Cachana (Cynopotamus Atratoensis) in the Cienaga Grande de Lorica, Colombia. Acta biol.Colomb. [online]. 2011, vol.16, n.1, pp.77-86. ISSN 0120-548X.
The length-weight relationship of Cachana (Cynopotamus atratoensis) in the cienaga Grande de Lorica between January 2000 and December 2002 was estimate. The length- weight relationship was TW = 0.0028 (± 0.03) TL3,41 (± 0,02), r = 0,99, n = 2,671, with growth coefficient positive allometric, ranging between 3.38 (2000) and 3.44 (2001) without statistically significant differences. The condition factor ranged from 0.0026 (2001) and 0.0034 (2002), without statistically significant differences, confirming the premise of the inverse relationship between this parameter and the growth coefficient of length-weight relationship. There was a correlation between the condition factor, the levels of the cienaga Grande de Lorica and spawning season of the Cachana and it appears that its body proportions remained unchanged over the study period, adapting to new conditions of the cienaga.
Palavras-chave : Cachana; Cynopotamus Atratoensis; length-weight relationship; Colombia.