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Karakteristik habitat kepiting bakau (Scylla spp) di perairan pantai Desa Todowongi Kecamatan Jailolo Selatan Kabupaten Halmahera Barat Serosero, Rugaya
Agrikan: Jurnal Agribisnis Perikanan Vol 4, No 1 (2011): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.agrikan.4.1.69-73

Abstract

Penelitian yang dilakukan di perairan pantai Desa Todowongi ini bertujuan untuk mengetahui karakteristik habitat kepiting bakau dengan menentukan tekstur substrat dan mengetahui kualitas perairan yang menjadi habitat kepiting bakau serta makanan alami khususnya makrozoobentos di daerah hutan mangrove Desa Todowongi. Hasil penelitian menunjukkan bahwa tekstur substrat adalah lempung berlumpur. Parameter lingkungan seperti suhu, salinitas dan pH air berada pada kondisi yang layak bagi kehidupan kepiting bakau. Makanan alami khususnya makrozoobentos yang ditemukan terdiri atas 10 jenis dengan kepadatan tertinggi pada jenis Turricula javana dan Tereblaria palustris (2,467 ind/m2)), keanekaragamannya tergolong rendah dan tidak ada jenis yang mendominasi.
Sex Ratio and Growth Pattern of Coconut Crabs Birgus latro (Crustacea, Decapoda, Cianobitidae) in North Moluccas Province, Indonesia Serosero, Rugaya; Sulistiono, Sulistiono; Butet, Nurlisa A.; Riani, Etty
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (460.69 KB) | DOI: 10.20884/1.oa.2019.15.1.527

Abstract

Coconut crab (Birgus latro) is a crustacean that has a large size until four kilograms. The study  aimed to analyze sex ratio and growth pattern including the relationship of thorax length - body weight, thorax width - body weight and cephalothorax length plus rostrum - body weight in Daeo (Morotai Island), Laigoma (South Halmahera District) and Fitako (North Halmahera District). The sex ratio was determined using χ2 test and the growth pattern was tested by the b value through t test. The results showed sex ratio of 1: 0.9 in Daeo (n = 581), 1: 0.6 in Laigoma (n = 24), and 1: 2 in Fitako (n = 31). The relationship of thorax length, thorax width and cephalothorax length plus rostrum with body weight were strongly correlated (R2> 70%). The growth pattern of coconut crab in Daeo was negative allometric, while in Laigoma and Fitako were negative allometric and isometric.