Reproductive bilogy of Micropogonias funieri (Desmaret 1823) (Teleostei, Scinidae): 2. Gonadosomatic index, legth and weight of ovaries as indicator of spawning season

Authors

  • Victoria J Isaac-Nahum Superintendência do Desenvolvimento da Pesca
  • Anna Emília A. de M Vazzoler Universidade de São Paulo; Instituto Oceanográfico

DOI:

https://doi.org/10.1590/S1679-87591987000200003

Keywords:

Reproduction, Spawning seasons, Gonadosomatic index, Micropogonias funieri, Southeastern Brazilian coast

Abstract

Gonadosomatio index (RGS) , mean ovaries length and weight variations has been analysed in order to verify if they may be used as quantitative indicators of spawning period and gonadal development in Micropogonias funieri, population I (23º-29ºS). The analysis of the relationships between gonadosomatio index and total weight single valuesy for females in the same maturity stage, didn't show dependence, being a constant value for each stage, which makes it useful as an a indicator of gonadal development. The three indices showed cyclic Variations with modal values corresponding to the three spawning periods (autumn, winter and spring-summer).

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Published

1987-01-01

Issue

Vol. 35 No. 2 (1987)

Section

Artigos

How to Cite

Reproductive bilogy of Micropogonias funieri (Desmaret 1823) (Teleostei, Scinidae): 2. Gonadosomatic index, legth and weight of ovaries as indicator of spawning season . (1987). Boletim Do Instituto Oceanografico, 35(2), 123-134. https://doi.org/10.1590/S1679-87591987000200003