Growth in Melanosuchus níger and Caiman crococilus crocodilos at Zancudococha and Cuyabeno, Ecuadorian Amazon

Abstract:

Methods. From August 1992 to January 1995, ID5 different individuals of C. crocodilus and 146 of M. niger were captured, marked, measured and released in three black water lagoons of Ecuadorian Amazon: Cuyabeno, zancudococha and Imuya). Because many animals had incomplete tails, the snout-vent length (SVL) of every animal was measured. Then, a lineal regression was calculated between the snout-vent length and the total length of all those animals with complete tail: for M. niger, ETL=(SVL+ 1.4886)/0.4876 r::::: 1, and for C. crocodilus, ETL=(SVL+ 0.7793)/0.5063 r::::: 1. This regressions were applied to every snout-vent length for calculating the expected total length (ETL), with which analysis were made. In order to reduce measuring error, only recaptures with 90 or more days of interval where included in the analysis. These were 8 recaptures for C. crocodilus and 23 for M. niger (96% of the data for M …

Año de publicación:

1996

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