Gametogenesis and weight change of body organs of the sea cucumber Holothuria (Halodeima) grisea (Aspidochirotida: Holothuriidae) in Southern Brazil.

 

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Detalles Bibliográficos
Autores: de Lima Bueno, Maristela, Garcia Tavares, Yara Aparecida, Di Domenico, Maikon, Borges, Michela
Formato: artículo original
Estado:Versión publicada
Fecha de Publicación:2015
Descripción: The sea cucumber Holothuria (Halodeima) grisea is a widely distributed and economically important species that has been harvested in Brazil for several years, where there are no studies on its reproduction. We studied a population near Guaratuba Bay in Southern Brazil. Four sampling campaigns were made, in February, April, June and October 2008. We examined the macroscopic and microscopic features of the gonads to describe the gametogenesis. In addition, we analyzed the weight change of body organs. A total of 94 individuals were examined and no evidence of external sexual dimorphism was found. In April there were more males than females. Biometrically the body wall and gonads are the most important organs. The body wall increases in the June and the gonads during October and February; there might be an exchange of energy between these organs. Mature gonads are elongated and thick (red in females, cream in males). There were mature individuals year round, with an increase of sexual activity in February when oocyte mature diameter ranges from 70 to 160 µm. Spawning was in winter (June). Maturation period and body component variations were similar between sexes. 
País:Portal de Revistas UCR
Institución:Universidad de Costa Rica
Repositorio:Portal de Revistas UCR
Lenguaje:Inglés
OAI Identifier:oai:portal.ucr.ac.cr:article/23163
Acceso en línea:https://revistas.ucr.ac.cr/index.php/rbt/article/view/23163
Palabra clave:reproduction
sea cucumber
gonad index
histology
spawning
rocky shore.
Gametogénesis
índice gonadal
pepino de mar
desove
costa rocosa.