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Volume 45 - Number 2 - 2010
Article

 


Biological aspects of Lutjanus peru in Bufadero Bay, Michoacán, México: growth, reproduction and condition factors

Manuel Gallardo-Cabello1, Marcela Sarabia-Méndez1, Elaine Espino-Barr2and Vicente Anislado-Tolentino3

 

1Departamento de Biología Marina, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Apartado Postal 70-305, C.P. 09340, México D.F., México

2CRIP-Manzanillo, Instituto Nacional de Pesca, Playa Ventanas s/n, Manzanillo, Colima, 28200, México

3Universidad del Mar-Campus Puerto Ángel, Ciudad Universitaria, Puerto Ángel, San Pedro Pochutla, Oaxaca, C.P. 70902, México

 

E-mail: elespino@gmail.com

 

Some biological aspects of Lutjanus peru (Pisces: Lutjanidae) collected from Bufadero Bay in Michoacán, Mexico, were analyzed. Scale analysis allowed determining four growth rings. Similar data were obtained with an indirect method (kernel density estimates). Results of von Bertalanffy’s growth equation obtained by simple linear method were: L= 81.12 cm, W= 4,839 g, K= 0.24 years-1 and to= -0.39 years. The maximum values of the repletion index and condition factor occurred during February, April and June. Spawning peaks occurred between February and August. Recruitment periods in the area were from January to July for those born in August, and August to December for the ones born in February. Recruitment length of the fishing gear is 18 cm which occurs after age one. The gonadosomatic index is inversely proportional to the hepatosomatic index. Length of first sexual maturity is 25.45 cm. Longevity of L. peru is estimated to be at least 12 years. In Bufadero Bay, 65.84% of the catch is on sexually immature organisms, therefore we suggest that fishing captures should consider specimens larger than 45 cm (age 3 years) and a closed season for August and September

 

Key words: Lutjanidae, age determination, scales, hepatosomatic index, gonadosomatic index

 

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