BEBERAPA ASPEK BIOLOGI UDANG WINDU (Penaeus monodon (Fabricus, 1789) DI PERAIRAN TARAKAN, KALIMANTAN UTARA
Abstract
Udang windu merupakan salah satu komoditas ekonomis di Indonesia dan sudah dimanfaatkan serta dikembangkan cukup lama di perairan Tarakan sehingga perlu upaya pengelolaan dengan salah satu dasar kajian biologinya. Penelitian ini membahas beberapa aspek biologi udang windu, meliputi hubungan panjang-berat, nisbah kelamin, kematangan kelamin, serta ukuran rata-rata tertangkap dan matang kelamin. Penelitian dilakukan pada selama bulan Januari-November 2016. Hasil penelitian menunjukkan, dari 2208 ekor contoh udang windu yang dianalisa, ukuran yang tertangkap berkisar antara 21,9-63 mmCL serta hubungan panjang-bobot menyatakan pola pertumbuhan isometrik. Musim pemijahan diduga terjadi sepanjang tahun dengan puncak pemijahan pada bulan Maret-April dan September. Nisbah kelamin udang berada dalam kondisi tidak seimbang dan didominasi oleh betina. Rata-rata ukuran pertama kali tertangkap (Lc) adalah pada panjang karapas 40,69 mmCL serta rata-rata ukuran matang gonad (Lm) udang betina adalah 33,58 mmCL.
Tiger shrimp (Penaeus monodon, Fabricus, 1789) was one of economic commodity of shrimp in Indonesia and had been historically exploited that required a proper management measure based on biology study. The research aims to examine biological aspects of tiger shrimp such as length-weigth relationship, sex ratio, maturity stage and length of first capture (Lc) and length of first maturity (Lm). The research was carried out from January to November 2016 using survey method and the monthly enumeration programme. The result of 2.208 individual tiger shrimp analysed showed that size of tiger shrimp range between 21.9-63 mmCL with the growth follows a isometric pattern. Spawning season occurs throughout the year with peak season in March-April and September. Sex ratio was in an unbalanced condition dominated by females. The length of first capture (Lc) was 40.69 mmCL and length of first maturity (Lm) was 33.58 mmCL.
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DOI: http://dx.doi.org/10.15578/bawal.10.1.2018.49-55
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