Is it Possible to Keep the Exoskeleton of the Crab Callinectes Ornatus Soft for Several Days?

Diogo Barbalho Hungria,Ubiratã De Assis Teixeira Da Silva,Antonio Ostrensky,Ariana Cella-Ribeiro,Leandro Ângelo Pereira,Camila Prestes Dos Santos Tavares

doi:10.34257/gjmrgvol21is1pg1

Abstract

Soft-shell crab is considered a gastronomic delicacy, reaching high values in the international market. Under normal conditions, the process of hardening of the crab's exoskeleton after moulting takes approximately two days to complete; however, the commercial consistency of soft-shell crab is lost in just 3 hours. The goal of this research was to evaluate the effects of chemical changes of water on the duration of postmoult, specifically at the stage in which they can be marketed as soft-shelled crab. In this research, Callinectes ornatus (n=241) underwent two experiments: One group was maintained in tanks with partial daily water renewal (Experiment 1), and other in tanks without water renewal (Experiment 2). In the experiment 1, the chemical characteristics of the water remained unchanged over time (p > 0.05), and the median time to hardening of the exoskeleton after moulting was 3 hours.

Highlights

Federal University of Paraná Abstract- Soft-shell crab is considered a gastronomic delicacy, reaching high values in the international market
Callinectes ornatus Ordway, 1863 (Crustacea, Decapoda, Portunidae) is a swimmer crab found from North Carolina (USA) to the Rio Grande do in just 3 hours
The goal of this research was to evaluate the Sul (Brazil). It occurs in areas with sand, mud or shell effects of chemical changes of water on the duration of postmoult, at the stage in which they can be marketed as soft-shelled crab

Summary

Introduction

Federal University of Paraná Abstract- Soft-shell crab is considered a gastronomic delicacy, reaching high values in the international market. The process of hardening of the crab's exoskeleton after moulting takes approximately two days to complete; the commercial consistency of soft-shell crab is lost in just 3 hours. The goal of this research was to evaluate the effects of chemical changes of water on the duration of postmoult, at the stage in which they can be marketed as soft-shelled crab. I. Introduction conditions, the process of hardening of the crab's exoskeleton after moulting takes approximately two days to complete; the commercial consistency of soft-shell crab is lost. The goal of this research was to evaluate the Sul (Brazil) It occurs in areas with sand, mud or shell effects of chemical changes of water on the duration of postmoult, at the stage in which they can be marketed as soft-shelled crab.

Objectives

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Conclusion