Abstract
To elucidate the reproductive cycle of any animal, it is first necessary to understand the development of the germ cells and how this process occurs throughout the reproductive tract. Thus, the aim of the present study was to understand the oogenesis and spermatogenesis, as well as the ovarian and testis maturation and type of spawning, of Haemulon plumieri. A total of 119 females and 136 males were analysed. Based on micro and macroscopic characteristics of gonads, the following stages of maturation for females were determined: immature, maturing, ripe, partially spawning, spawning and resting. For males, only the stages immature, maturing, ripe and spent were observed. We can conclude that the ovarian development occurs cyclically, in which the female can spawn more than two times during the reproductive season with the spawning "synchronous in more than two groups". Since males do not present the "rest" stage after copulation, the maturation process is continuous.
Highlights
The Haemulon plumieri (Lacépede, 1801), popularly known as white grunt, is a typical reef-associated and tropical species found in warm and temperate waters of the Western Atlantic, from Bermudas and Maryland, USA, to Santa Catarina, in southern of Brazil (GarciaJúnior et al, 2010).To elucidate the reproductive cycle of any animal, it is first necessary to understand the development of the germ cells and how this process occurs throughout the reproductive tract
The importance of studies that combine microscopic to macroscopic characteristics is justified by the need to ensure a correct classification of stages of development, not mixing juveniles with adults in “rest” stage, an error commonly observed in studies merely based on macroscopic analysis
Specimens of H. plumieri were monthly collected between January 2006 and August 2007, off the state of Ceará, at distances from the shore ranging from 5 to 45 miles (03° 00’ S to 03° 45’ S 038° 05’ W to 039° 00’ W) using line and baited hook. 255 specimens of H. plumieri were analysed; 119 were females and 136 males
Summary
The Haemulon plumieri (Lacépede, 1801), popularly known as white grunt, is a typical reef-associated and tropical species found in warm and temperate waters of the Western Atlantic, from Bermudas and Maryland, USA, to Santa Catarina, in southern of Brazil (GarciaJúnior et al, 2010). To elucidate the reproductive cycle of any animal, it is first necessary to understand the development of the germ cells and how this process occurs throughout the reproductive tract. The importance of studies that combine microscopic to macroscopic characteristics is justified by the need to ensure a correct classification of stages of development, not mixing juveniles with adults in “rest” stage, an error commonly observed in studies merely based on macroscopic analysis. Two studies concerning gonad development of H. plumieri was observed. Alves and Aragão (1973) described the maturation of the species in northeastern Brazil and.
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