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All Journal Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan
Sulistiono Sulistiono
Departemen Manajemen Sumberdaya Perairan, FPIK,IPB, Bogor
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KARAKTERISTIK HABITAT DAN TINGKAT KEMATANGAN GONAD KEPITING KELAPA (Birgus latro) DI PULAU UTA, PROPINSI MALUKU UTARA Supyan Supyan; Sulistiono Sulistiono; Etty Riani
AQUASAINS Vol 2, No 1 (2013)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

Coconut crab (Birgus latro) is  one of the species of crustaceans that economically valuable. The research aimed to investigate habitat characteristics and gonad maturity of Coconut crabs (Birgus latro) in Uta Island, North Mollucas. Sampling was conducted through cruising survey from May to September 2012, while parameters examined to the habitat characteristics and reproductive aspects were physical-chemical, gonad maturity, and vegetation existence. Habitat characteristics were assessed using Cluster Analysis. Result showed that length and weight relationship of male crabs wasW= 1.93 (CP + r), while the female was 1.17W= 1.97 (CP + r) 0.97. During the observation, it showed that mature gonad occurred in all catching time indicating that it didn’t occur simultaneously on the broodstock. The smallest crabs were found 65.44 mm in length (CP + r). There was no significant different of sex ratio between males and females (1:1). Disparity of habitat characteristics in each station doesn’t affect to the catch, both the quantity and level of gonad maturity. Habitat conditions at all stations strongly supported their activities to live sustainably.
KARAKTERISTIK HABITAT DAN POTENSI KEPITING BAKAU (Scylla serrata, S.transquaberica, and S.olivacea) DI HUTAN MANGROVE CIBAKO, SANCANG, KABUPATEN GARUT JAWA BARAT Irvan Avianto; Sulistiono Sulistiono; Isdrajad Setyobudiandi
AQUASAINS Vol 2, No 1 (2013)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

The research aimed to collectdata and information about the habitatcaracteristics and mud crabs potency in Cibakomangrove forest. Sampling was conductedthrough line plot transect survey.Parameters examined physical-chemical characteristic,mangrove vegetation, mud crabspopulation and size distribution. Habitatcharacteristics were collected cluster analisys.The result showed that some parametersof habitat were resemblance wherestations 1 and 2 were Groups A, stations3 and 4 were groups B , and station 5 and6 were groups C. The mud crabs populations,size distribution, and habitat groupswere analyzed correspondence analysis.S.serrata dominate in zone A in dark totaled67 ind. individual existence S.serrataallegedly tolerant of high salinity > 28 0/00and macrozoobenthos abundance of mangrovecrabs as a food source. S.tanquabericadominate in zone B in the dark was 70 ind.The presence of individual species in zoneB allegedly tolerant of salinity 24 -> 280/00, natural food abundance and habitatsuitability as a mud substrate. S.olivaceadominate in the zone C in the dark totaled38. The presence of individual speciesin zone C allegedly due to low salinity tolerant in the range of 21-22 0/00 and canlive on clay substrate.
Co-Authors Etty Riani Irvan Avianto Isdrajad Setyobudiandi Supyan Supyan