Sexual maturity of Callinectes danae and C. ornatus from Paraguaçu river estuary, Bahia state, Brazil

Authors

DOI:

https://doi.org/10.20950/1678-2305/bip.2022.48.e635

Abstract

Callinectes danae and C. ornatus are economically important species in several countries, including Brazil. Therefore, this study aimed to estimate the L50 of these species using morphological, morphometric, and physiological data. The estimated values were statically compared and results from previous studies were analyzed to verify latitudinal variations among the sizes of sexual maturity at different latitudes of the Brazilian coast. Individuals were monthly collected in the Paraguaçu River estuary from August 2013 to July 2014, using cage traps. L50 estimates for C. danae were morphological=55.80 mm, morphometric=59.04, mm, and physiological=60.41 mm for males and morphological=54.63 mm, morphometric=55.33 mm, and physiological=57.29 mm for females. Considering C. ornatus, estimates were morphological=42.63 mm, morphometric=50.81 mm, and physiological=43.95 mm for males and morphological=42.33 mm, morphometric=42.75 mm, and physiological=40.43 mm for females. Our results indicated that the minimum catch sizes should be equal to 61.00 mm for C. danae and 51.00 for C. ornatus and that the mesh of traps used by fishermen must be adjusted to prevent the capture of immature animals.

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