* Corresponding Author
Growth of Varied Ratio of Male-Female Mud Crab Scylla olivacea Maintained in Mangrove Area
https://doi.org/10.22146/jfs.12593 Muhammad Yusri Karim(1*), Hasni Y. Azis(2), Muslimin Muslimin(3)
(1) Department of Fisheries, Faculty of Fisheries and Marine Science, Hasanuddin University, Makassar.
(2) Department of Fisheries, Faculty of Fisheries and Marine Science, Hasanuddin University, Makassar.
(3) Politeknik Pertanian Negeri Pangkep
(*) Corresponding Author
Abstract
Mudcrab fattening is potential to develop in mangrove areas. The aim of the present study was to determine the best ratio of male and female in fattening of mud crab in the mangrove area. Research was conducted in the mangrove areas of Pangkep Regency, South Sulawesi Province. Test animals used were mud crab S. olivacea male and female measuring weight of 250 ± 10 g and were stocked at a density of 10 animals/cage. The bamboo cages measuring length, width, and height of 1.0 x 1.0 x 1.0 m3 were placed in the mangrove areas. Feed used was trash fish at 10% of the biomass with the feeding frequency of two times a day ie morning (30%) and afternoon (70%). The study used a completely randomized design (CRD) consisting of 4 treatments and 3 replications. The ratio of male and female crabs were 7:3; 6:4; 5:5; 4:6 and 3:7 crabs/cage, respectively. Results of analysis of variance showed that the treatment with the different ratio of male and female was not significant (p> 0.05) on the survival rate of crab, but was highly significant (p <0.01) on the absolute and daily growth rate. The resulting survival rate ranges from 93.33 to 100%, absolute growth and the highest daily growth rate of crabs produced at a ratio of males and females (7:3) and (6:4) crabs/cage ie: 56.99 and 1.35; 56.25 g and 1.36%/day, while the lowest was in the ratio (3:7) crabs/cage ie: 28.97 g and 0.73%/day.
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DOI: https://doi.org/10.22146/jfs.12593
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