{"title":"BEBERAPA ASPEK BIOLOGI IKAN KURAU (Polynemus dubius) DI ESTUARI SUNGAI INDRAGIRI, RIAU","authors":"Asyari Asyari, Herlan Herlan","doi":"10.15578/BAWAL.5.2.2013.67-72","DOIUrl":null,"url":null,"abstract":"Ikan kurau (Polynemus dubius) merupakan salah satu jenis ikan yang mempunyai nilai ekonomi penting di Kabupaten Indragiri Hilir, Riau. Penelitian tentang aspek biologi meliputi hubungan panjang-berat, jenis pakan dan kebiasaan makan, tingkat kematangan gonad, fekunditas dan indek kematangan gonad dilakukan pada bulan Maret, Mei, Juli dan Oktober 2011. Hasil penelitian menunjukkan bahwa hubungan panjang - berat ikan kurau mengikuti persamaan W = 0, 005 L 2,9851. Dengan nilai b = 3. Dengan demikian ikan kurau mempunyai pola pertumbuhan yang isometrik dimana terdapat keseimbangan antara pertumbuhan panjang dengan pertumbuhan berat. Ikan kurau bersifat karnivora dengan pakan utama jenis udang-udangan (krustasea) dan ikan-ikan kecil. Proses kematangan gonad terjadi secara bertahap dan ikan kurau diduga mengalami pemijahan secara tidak serentak (partial spawning). Fekunditas ikan kurau berkisar antara 5.468 – 10.256 butir dengan indeks kematangan gonad antara 7,64 % - 11,00 %. Eastern paradise fish (Polynemus dubius) is one of species of fish which have economic value in the Distric of Indragiri Hilir, Riau. Research was carried out regarding length-weight relationship, food and feeding habits, maturity stage, fecundity and gonad maturity index. Data collected in March, May, July and October 2011. The results showed that the length-weight relationship of Eastern paradise fish (Polynemus dubius) follow the equation of W = 0. 005 L 2.9851 with value of b = 3. It means that have isometric growth pattern where there is a balance between growth in length and weight. As a carnivore fish, it has main feeding of Cruatacean and small fish. Gonad maturation process was gradual and no simultaneously (partial spawning). Mean while the fecundity in the range of 5,468 – 10,256 eggs with gonad maturity index between 7.64 % - 11.00%.","PeriodicalId":31221,"journal":{"name":"Bawal Widya Riset Perikanan Tangkap","volume":"62 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2016-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bawal Widya Riset Perikanan Tangkap","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.15578/BAWAL.5.2.2013.67-72","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
摘要
curau (Polynemus dubius)是廖内下游渔业最重要的经济价值鱼类之一。2011年3月、5月、7月和10月,对生物方面的研究包括丰富的关系、饲料种类和饮食习惯、刚毛、结节和刚毛的成熟度。研究结果表明,kurau的长期关系是由W = 0 005 L 29851跟随的。b等于3。因此,久爪鱼有一个等效的生长模式,在长生长和重生长之间有一个平衡。角鱼是一种食肉动物,主要以甲壳类动物和小鱼为食。刚性腺的成熟过程是渐进的,kurau的生长被认为是部分产卵的。kurau的育儿袋分布在5,468 - 10256粒之间,甲状腺的成长率在7.64 - 11.00%之间。东部天堂鱼是下游感官区域中有经济价值的一种物种。研究还考虑到附加关系、食物和饲料、舞台、粪便和粪便指数。2011年3月、7月和10月收集数据。最近的分析表明,天堂鱼遵循的平衡是W = 0。005 L 2.9851除以b = 3。这意味着在length和weight之间有平衡的增长模式。就像一条食肉鱼,它以甲壳类和小型鱼类为食。刚性膨胀过程是渐进的,没有同步的。意思是,尽管狗在5.468—10.256鸡蛋有甲状腺功能指数,在7.64 - 11%之间。
BEBERAPA ASPEK BIOLOGI IKAN KURAU (Polynemus dubius) DI ESTUARI SUNGAI INDRAGIRI, RIAU
Ikan kurau (Polynemus dubius) merupakan salah satu jenis ikan yang mempunyai nilai ekonomi penting di Kabupaten Indragiri Hilir, Riau. Penelitian tentang aspek biologi meliputi hubungan panjang-berat, jenis pakan dan kebiasaan makan, tingkat kematangan gonad, fekunditas dan indek kematangan gonad dilakukan pada bulan Maret, Mei, Juli dan Oktober 2011. Hasil penelitian menunjukkan bahwa hubungan panjang - berat ikan kurau mengikuti persamaan W = 0, 005 L 2,9851. Dengan nilai b = 3. Dengan demikian ikan kurau mempunyai pola pertumbuhan yang isometrik dimana terdapat keseimbangan antara pertumbuhan panjang dengan pertumbuhan berat. Ikan kurau bersifat karnivora dengan pakan utama jenis udang-udangan (krustasea) dan ikan-ikan kecil. Proses kematangan gonad terjadi secara bertahap dan ikan kurau diduga mengalami pemijahan secara tidak serentak (partial spawning). Fekunditas ikan kurau berkisar antara 5.468 – 10.256 butir dengan indeks kematangan gonad antara 7,64 % - 11,00 %. Eastern paradise fish (Polynemus dubius) is one of species of fish which have economic value in the Distric of Indragiri Hilir, Riau. Research was carried out regarding length-weight relationship, food and feeding habits, maturity stage, fecundity and gonad maturity index. Data collected in March, May, July and October 2011. The results showed that the length-weight relationship of Eastern paradise fish (Polynemus dubius) follow the equation of W = 0. 005 L 2.9851 with value of b = 3. It means that have isometric growth pattern where there is a balance between growth in length and weight. As a carnivore fish, it has main feeding of Cruatacean and small fish. Gonad maturation process was gradual and no simultaneously (partial spawning). Mean while the fecundity in the range of 5,468 – 10,256 eggs with gonad maturity index between 7.64 % - 11.00%.