Gonadal Development of Females of the White Shrimp Penaeus schmitti (Burkenroad, 1936) Caught in Southeastern Brazil

Flávia Regina S C Gonçalves,Henrique D Lavander,Caroline V Bernabé,Cecília Fernanda F Craveiro,Roberta Cardozo P Garcia,Maria Aparecida Silva,Paulo Henrique R Aride,Adriano T Oliveira,Caterina Faggio,Jones S Neto

doi:10.3390/jmse9060653

Abstract

This study describes the reproductive cell development and ovarian developmental stages, and identifies the nongerminal components of white shrimp (Penaeus schmitti) caught off the southern coast of Espírito Santo, Brazil. P. schmitti specimens were collected monthly from March 2019 to February 2020, by artisanal fishing. All shrimps were analyzed macroscopically (n = 181) and females were randomly selected monthly (n = 154) for ovarian histological analysis. The ovaries were extracted for visual analysis and then submitted to histological analysis. Macroscopic analysis determined five stages of gonadal development from the color and turgidity of the fresh ovary. Histological observations allowed us to observe five stages of gonadal development: immature, initial development, advanced development, mature and spawning. This information are fundamental for understanding the reproductive aspects of P. schmitti, as well as other penaeid shrimps, in order to promote preservation of natural stocks and provide information to assist in the development of the reproductive potential of native species in captivity.

Highlights

In recent years, the consumption of fish has grown exponentially due to the global population increase and the search for healthier foods with great nutritional quality [1].the groups of the most valuable organisms with significant production, in particular shrimps, showed a maximum level of catches in 2016 [1].The capture of shrimps is economically important throughout the Brazilian coast, and has social and historical implications [2]
The main species caught are the sea bob shrimp Xiphopenaeus kroyeri (Heller, 1862), the pink shrimp Farfantepenaeus spp. (Burukovsky, 1997) and the white shrimp Penaeus schmitti (Burkenroad, 1936), which corresponds to a production of 26.9%, 18% and 7%, respectively [3]
A total of 154 females were submitted to histological analysis of the ovary

Summary

Introduction

The consumption of fish has grown exponentially due to the global population increase and the search for healthier foods with great nutritional quality [1].the groups of the most valuable organisms with significant production, in particular shrimps, showed a maximum level of catches in 2016 [1].The capture of shrimps is economically important throughout the Brazilian coast, and has social and historical implications [2]. Among the most captured species, the P. schmitti, popularly known as the southern white shrimp, is distributed in the Western Atlantic, from the Antilles, in the Caribbean, to the state of Rio Grande do Sul, in Brazil [4]. They can be found from shallow depths up to depths of 30 m, with some catches recorded at up to 50 m. Unlike the pink shrimp species and the sea bob shrimp, the white shrimp has an open telycum, and ecdysis is not necessary for reproduction [5] It has a short rostrum, one of the main characteristics of differentiation between these species

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Discussion

Conclusion