Gonad maturity and gonadal somatic index of blue swimming crab Portunus pelagicus harvested from Spermonde Archipelago, South Sulawesi, Indonesia

Muh Saleh Nurdin,Fauziah Azmi,Teuku Fadlon Haser

doi:10.13170/ajas.6.1.19187

Muh Saleh Nurdin, Fauziah Azmi + Show 1 more

Open Access

https://doi.org/10.13170/ajas.6.1.19187

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Abstract

Reproductive biology is one of the biological aspects that needed to formulate responsible management of blue swimming crab (BSC). The crab is one of the commercial fisheries commodities in South Sulawesi, Indonesia. Presently no information on the reproductive biology of this crab from Spermonde Archipelago, Sout Sulawesi. Therefore, the study aimed to analyze and compare gonad maturity stage(GMS)andgonadalsomaticindex(GSI)oftheBSCcaughtonthreeecosystemsnamelycoralreef,seagrass,andmangrovein Salemo Island, Spermonde Archipelago. GMS and GSI were analyzed descriptively for five months from March to July 2015. Results indicate there was a difference in GMS of the BSC caught in mangroves, seagrass, and coral reef. Generally, mangrove was dominated by immature BSC with GMS I and GMS II, while the BSC caught in the seagrass and coral reef BSC were dominantly mature and spawn GMS III, IV, and V. GSI BSC caught in mangrove ecosystem are smaller than GSI BSC caught in seagrass and coral reef ecosystems. Seagrass and coral reef ecosystems suitable for development no-take zone of the BSC.

Highlights

Spermonde archipelago is located in the center of the Coral Triangle of which marine biota is highly diverse (Máñez et al, 2012; Sawall et al, 2013)
It can be seen that samples captured in mangroves were dominated by immature blue swimming crab (BSC) with gonad maturity is in gonad maturity stage (GMS) I and GMS II
BSC captured in seagrass and coral reefs were dominated by mature and spawn (GMS III, IV, and V)

Summary

Introduction

Spermonde archipelago is located in the center of the Coral Triangle of which marine biota is highly diverse (Máñez et al, 2012; Sawall et al, 2013). These islands sit on the Makassar strait (Timm et al, 2017). The highly valued commodity from this region is blue swimming crabs (Portunus pelagicus), which is mainly captured surrounding Salemo island, is an island in the archipelago (Nurdin et al, 2016; Nurdin et al, 2020). Blue swimming crab (BSC) is an important commodity due to its high value in the global market fishery (Sahoo et al, 2011; Mehanna et al, 2013; Sabrah et al, 2020). The market demand triggers continuous exploitation of BSC in Salemo Island (Nurdin et al, 2019a)

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