1793年,在南海纳巴纳水域的南塘鱼(SELAR crumenophthalmus Bloch)的生殖生物学家

M. Fauzi, I. Setyobudiandi, A. Suman
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引用次数: 7

摘要

在南海纳图纳水域发现的一种常见的小型拖网渔船是一种常见的鱼类。渔业渔业日益密集的利用担心会导致渔业数量的减少。selar鱼的生物学知识是其管理考虑的基础。该研究旨在分析纳巴纳水域中水藻生殖的生物学特征,包括生殖器日藻,初生时的平均大小,被捕获的平均大小(L50%),风化和产卵期的最高水平。这项研究包括收集环拖网捕捞的样本,这些鱼被放置在加里曼丹西部的PPN养鱼场5年(2016 -2016)。研究结果表明,雄性和雌性日产鱼的生殖器是1:1。05。大多数鱼都处于成熟阶段(TKG 3),在东部(6月- 7月)和12月(12月- 1月)。捕获的平均大小(L50%)为18厘米比格耶在南中国水的水里被渔民们吞掉了。这种物种的平均爆炸率。对bigeye scad生物方面的了解,作为对进行进行管理的考虑是至关重要的。这一研究是对在na金枪鱼水域进行生物分析的结果,就像性比赛一样,这项研究是由心怀不轨的动物组织委托的。最近的民意调查显示,男性和女性之间的性紧张程度是1点05分。它被切割成舞台上的鱼所支配。今年6月到7月,东部的季节每年发生两次,西季12月至1月的开始。第一次捕获的长度是18厘米
本文章由计算机程序翻译,如有差异,请以英文原文为准。
BIOLOGI REPRODUKSI IKAN SELAR BENTONG (Selar crumenophthalmus Bloch, 1793) DI PERAIRAN NATUNA, LAUT CINA SELATAN
Ikan selar bentong (Selar crumenophthalmus) merupakan salah satu jenis ikan pelagis kecil yang cukup dominan tertangkap di perairan Natuna, Laut Cina Selatan. Pemanfaatan yang semakin intensif oleh perikanan pukat cincin dikhawatirkan akan mengakibatkan penurunan populasinya. Pengetahuan tentang biologi ikan selar bentong penting sebagai dasar pertimbangan pengelolaannya. Penelitian ini bertujuan menganalisis karakter biologi reproduksi ikan selar bentong di perairan Natuna, meliputi nisbah kelamin, ukuran rata-rata pertama kali matang gonad, ukuran rata-rata tertangkap (L50%), tingkat kematangan gonad dan dugaaan musim pemijahan. Penelitian dilakukan dengan mengumpulkan ikan contoh hasil tangkapan pukat cincin yang didaratkan di PPN Pemangkat Kalimantan Barat selama 5 tahun (2012-2016). Hasil penelitian menunjukkan Nisbah kelamin ikan jantan dan betina adalah 1:1.05. Sebagian besar ikan dalam stadium pematangan (ripening, TKG 3). Ikan bentong mengalami dua musim pemijahan yakni pada awalmusim timur (Juni-Juli) dan awal musim barat (Desember-Januari). Ukuran rata-rata tertangkap (L50%) sebesar 18 cm FL lebih kecil dari nilai pertama kali matang gonad (Lm) yakni 20,2 cm FL. Nilai Lc yang lebih kecil daripada nilai Lm mengindikasikan terjadinya growth overfishing.Bigeye scad (Selar crumenophthalmus) dominantly caught by fishers in the Natuna watersof South China Sea. The intensive exploitation rate of this species by purse seiner led to population decrease. The understanding on biological aspect of bigeye scad is important as a consideration on arranging a proper management. This study aims to analyze biological reproduction of bigeye scad in the Natuna waters, such as sex ratio, length at first maturity, length at first capture, gonad maturity stage and the estimation of spawning season. This research is conducted by sampling the fishes that caught by purse seine fleets which is landed in AFP Pemangkat, West Borneo for 5 years (2012 to 2016). The result showed that sex ratio of males and females were balance by 1:1,05. It dominated by fish that are ripening stage. Spawning season happens twice per year which are in the beginning of east season on June to July and at the beginning of west season on December to January. Length at first capture (L50%) is 18 cmFL lower than length at first maturity (Lm = 20,2 cmFL) this condition indicated growth overfishing occurred in this fishery.
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