SciELO - Scientific Electronic Library Online

 
vol.37 número4AEfecto del suministro de cuatro densidades de copépodos (Acartia sp. y Calanus pacificus) en la respuesta productiva de Litopenaeus vannamei preengordado intensivamente a nivel microcosmosCirculación costera forzada por el viento en el golfo de Tehuantepec, México índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Ciencias marinas

versión impresa ISSN 0185-3880

Resumen

ESTRADA-GODINEZ, JA; MALDONADO-GARCIA, M; GRACIA-LOPEZ, V  y  CARRILLO, M. Reproductive cycle of the leopard grouper Mycteroperca rosacea in La Paz Bay, Mexico. Cienc. mar [online]. 2011, vol.37, n.4a, pp. 425-441. ISSN 0185-3880.

The leopard grouper Mycteroperca rosacea is an endemic species from the northwestern coast of Mexico and, like other serranid fishes, it has a high commercial value; hence, it is a good candidate for cultivation. This study aimed to describe the reproductive cycle of the leopard grouper in the wild as a step toward evaluating its aquaculture and restocking potential. From March 2008 to February 2009, 197 specimens were collected in the Gulf of California, Mexico. Overall sex ratio was 3.6 females to 1.0 male. Significant differences (P < 0.05) in total length and body weight were found between sexes. Group-synchronous ovarian development was observed with one yearly spawning period from May to June. Males matured two months earlier than females. The reproductive cycle was divided into four periods: (1) maturation, (2) spawning, (3) post-spawning, and (4) resting. Significant variations in the gonadosomatic index, hepatosomatic index, visceral fat index, and condition factor were observed throughout the study period. In addition, nine individuals were classified as immature bisexuals and one grouper presented evidence of sex change.

Palabras llave : Mycteroperca rosacea; reproductive cycle; gonadal development; temperature; photoperiod.

        · resumen en Español     · texto en Español     · pdf en Español