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Journal : AGRISAINS

Recruitment Pattern Of Blue Swimming Crab Portunus pelagicus in Salemo Island Waters, South Sulawesi Province. Nurdin, Muh. Saleh; Hasanah, Nur; Putra, Aswad Eka
AgriSains Vol 20, No 1 (2019)
Publisher : FAPETKAN UNTAD

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Abstract

This research aims to analyze yield per recruitment of the blue swimming crabs caughtin Salemo Island. This research was conducted from March to July 2015. Yield per recruitment ofthe blue swimming crab was analysed by using FISAT II. The research results indicated thatrecruitment pattern throughout the year with one peak, percentage of yield per recruitment 1.90-22.11 %.Keyword: blue swimming crab, yield per recruitment, Salemo Island.
Sex Ratio and Size at First Maturity of Snakehead Gudgeon (Giuris margaritacea) Caught with Gillnets at Bolano Sau Lake, Parigi Moutong District Putra, Aswad Eka; Nurdin, Muh. Saleh; Hasanah, Nur; Ndobe, Samliok; Mansyur, Kasim
AgriSains Vol 21, No 3 (2020)
Publisher : FAPETKAN UNTAD

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Abstract

The research aimed to sex ratio and size at first maturity of snakehead gudgeon at Bolano Sau Lake. The research was conducted at Bolano Sau Lake from August to December 2019. Snakehead gudgeon samples were obtained from the fishermen using a gillnet with a mesh size 2½-3½ inches. Sample analysis was carried out at the Water Quality Laboratory, State College of Fisheries and Marine, Palu. The difference in sex ratios of snakehead gudgeon used the Chi-square test, while the size at first maturity was estimated based on the Spearman - Karber method. Snakehead gudgeon caught on a gillnet in Bolano Sau Lake measuring 79-163 mm. The sex ratio between males and females is not balanced where males are more dominant in females. The size at first maturity was 119.19 mm. Suggestion minimum legal size > 120 mm. The use of gillnets in snakehead gudgeon fishing activities has an effect on the balance of male and females, but is very selective with size.