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espanolSeriola lalandi es un pez que tiene descrita su biologia reproductiva en especimenes silvestres. En particular, la maduracion gonadal de este pez presenta variaciones segun el sexo y largo de cada individuo. No obstante, en peces en cautiverio, como es el caso de su cultivo en un Sistema Acuicola de Recirculacion (SAR), para su engorda y posterior comercializacion, aun no se ha descrito su desarrollo gonadal ni su asociacion con el largo o peso del pez. Para contribuir a este vacio se seleccionaron, durante un ano, 30 individuos provenientes del Centro de Estudios Marinos y Limnologicos (CEMYL) de la Universidad de Tarapaca. A estos se les realizo la eutanasia para posteriormente realizarles la necropsia correspondiente, extrayendo las gonadas, a las que se le aplicaron tecnicas histologicas de rutina (Hematoxilina - Eosina) y tecnicas histoquimicas (Picro - Fucsina de Van Gieson y Periodic Acid Schiff). Obteniendo como resultado la identificacion de seis hembras, de las que cinco estaban en una etapa inmadura de crecimiento gonadal presentando solo oocitos inmaduros en los cuales el nucleo y nucleolo eran mas abundantes que el citoplasma y una de ellas presentaba solo oogonios que son los precursores de los oocitos. Se concluye que no se puede determinar la maduracion gonadal en individuos con tallas menores a 40 cm, como los analizados en este estudio. EnglishSeriola lalandi is a fish that has described their reproductive biology in wild specimens. In particular, the gonadal maturation of this fish has variations by sex and length of each individual. However, fish in captivity, as in the case of cultivation in Aquaculture Recirculation System (SAR), for fattening and subsequent marketing, has not yet been described their gonadal development and its association with long or weight of fish. To contribute to this gap, were selectedfor a year, 30 individuals from the Center for Marine Studies and Limnological (CEMYL) at the University of Tarapaca. These were euthanized in order to conduct the corresponding autopsy, removing the gonads, to which were applied Histological Techniques routine (Hematoxylin - Eosin) and Histochemical Techniques (Picro - Fuchsin Van Gieson and Periodic Acid Schiff). Which resulted in the identification of 6 female, 5 of which were in an immature stage of gonadal growth presenting only oocytes immature in which the nucleus and nucleolus were more abundant than the cytoplasm and one of them had only oogonia that are the precursors oocytes. It is concluded that you can not determine the gonadal maturation in individuals with smaller sizes to 40 cm, as analyzed in this study.

Estudio citomorfológico de la maduración de gónadas de hembras de Serióla lalandi en un Sistema Acuícola de Recirculación (SAR)