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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

Author(s):
Bueno, Maristela de Lima ; Garcia Tavares, Yara Aparecida ; Di Domenico, Maikon ; Borges, Michela
Total Authors: 4
Document type: Journal article
Source: Revista de Biología Tropical; v. 63, n. 2, p. 285-296, JUN 2015.
Web of Science Citations: 4
Abstract

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 mu m. Spawning was in winter (June). Maturation period and body component variations were similar between sexes. (AU)

FAPESP's process: 11/50724-0 - Taxonomic studies, expansion and computerization of the marine invertebrate collections of the Museum of Zoology of the State University of Campinas, with emphasis on the Echinodermata
Grantee:Michela Borges
Support type: BIOTA-FAPESP Program - Young Investigators Grants
FAPESP's process: 12/08581-0 - INTERSTITIAL ANNELIDS: SISTEMATIC AND PHYLOGENY OF NEGLECTED FAUNA
Grantee:Maikon Di Domenico
Support type: Scholarships in Brazil - Post-Doctorate