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All Journal Jurnal Pengelolaan Perikanan Tropis (Journal Of Tropical Fisheries Management) Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology)
Yunizar Ernawati
Departemen Manajemen Sumberdaya Perairan Fakultas Perikanan dan Ilmu Kelautan Institut Pertanian Bogor
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science

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ASPEK PEMIJAHAN IKAN PETEK, Leiognathus equulus, FORSSKAL 1775 (FAM. LEIOGNATHIDAE) DI PESISIR MAYANGAN SUBANG JAWA BARAT [Gonadal Development, Fecundity, and Spawning Seasons of Sliymouth, Leiognathus equulus, Forsskal 1775 (Fam. Leiognathidae) in Mayangan Coastal, Subang, West Java] Rini Novitriana; Yunizar Ernawati; M. F. Rahardjo
Jurnal Iktiologi Indonesia Vol 4 No 1 (2004): Juni 2004
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v4i1.253

Abstract

Study was done from May to November 2003 in Mayangan coastal, West Java. Fish samples taken once in a month. Laboratory analysis comprises measuring of total length and body weight; sex determination; and morphological and histological observation of gonad maturity. Total samples is 970 fishes, comprises 528 male, 326 female, and 80 indeterminate sexually. Samples is in the size range 45-208 mm total length and 1.38 - 145.7 grams body weight. Presumably, fish spawn every month with peak spawning in August and it attain first maturity at least 88 mm (male) and 95 mm (female). Gonado somatic index (GSI) of male among 0,0105-3,3021%, while female have GSI among 0,2076-6,0658%. In size range 83-208 mm, fecundity is among 1.496-57.845 eggs, and this value have very close relationship with gonad weight. Observation of frequency distribution of eggs diameter show that fish spawn their eggs all at once (total spawner).
Length Weight Relationship and Reproduction Potential of Eastern Paradise Fish Polynemus dubius in Palabuhanratu Bay: Hubungan Panjang Bobot dan Potensi Reproduksi Ikan Kurau (Polynemus dubius Bleeker, 1853) di Teluk Palabuhanratu Julia Syahriani Hasibuan; Mennofatria Boer; Yunizar Ernawati
Tropical Fisheries Management Journal Vol 2 No 1 (2018): Jurnal Pengelolaan Perikanan Tropis
Publisher : Departement of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2876.478 KB) | DOI: 10.29244/jppt.v2i1.25317

Abstract

Ikan kurau (Polynemus dubius) merupakan salah satu ikan demersal yang ditangkap oleh nelayan di perairan palabuanratu. Informasi biologi reproduksi P. dubius ini masih sedikit sehingga diperlukan kajian reproduksi bagi pengelolaan di masa mendatang. Penelitian tentang aspek biologi meliputi hubungan panjang bobot, nisbah kelamin, tingkat kematangan gonad, indeks kematangan gonad, fekunditas dan diameter telur dilakukan pada bulan Mei sampai dengan September 2017. Hasil penelitian menunjukkan bahwa hubungan panjang – bobot ikan kurau mengikuti persamaan W = 0,0000051531L3,0779, dengan nilai b = 3. Dengan demikian ikan kurau mempunyai pola pertumbuhan yang isometrik dimana terdapat keseimbangan antara pertumbuhan panjang dengan pertumbuhan bobot. Proporsi ikan kurau betina lebih dominan dibandingkan proporsi ikan kurau jantan selama penelitian. Proses kematangan gonad terjadi secara bertahap dan mengalami pemijahan secara tidak serentak (partial spawning). Fekunditas ikan kurau berkisar antara 1.027 – 18.580 butir dengan indeks kematangan gonad antara 2,172% - 7,027%.
Co-Authors Julia Syahriani Hasibuan M. F. Rahardjo Mennofatria Boer Rini Novitriana