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All Journal Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology
Subiyanto Subiyanto
Program Studi Manajemen Sumberdaya Perairan Jurusan Perikanan Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro Jl. Prof. Soedharto, SH Semarang
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PENDUGAAN UMUR LARVA IKAN GERONG-GERONG (Hypoatherina sp.) YANG TERTANGKAP DI PERAIRAN PELAWANGAN TIMUR, SEGARA ANAKAN, CILACAP MELALUI STUDI OTOLITH Subiyanto Subiyanto; Boedi Hendrarto; Lusiana Rahmawati; Christian B.C.
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 4, No 2 (2009): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (125.176 KB) | DOI: 10.14710/ijfst.4.2.33-37

Abstract

Pengamatan terhadap otolith larva ikan Hypoatherina sp. yang tertangkap di Pelawangan Timur Segara Anakan, Cilacap untuk menduga umur telah dilakukan dari bulan Juli – Oktober 2003. Pengambilan sampel larva ikan Hypoatherina sp. dilakukan setiap dua minggu sekali. dengan menggunakan plankton net berdiamter  60 cm dan   mesh size 200 mikron.  Larva yang paling banyak tertangkap berukuran panjang standart antara kelompok 4,1 – 6,0 mm sebanyak 40 % dan 6,1 – 8,0 sebanyak 28 %. Dari hasil pengamatan  didapatkan  bahwa larva ikan  Hypoatherina sp. yang tertangkap di perairan  Pelawangan Timur mempunyai jumlah lingkaran harian antara 4 - 19 dengan panjang standart 3,4 – 19,9 mm. Dari analisa regresi yang didapatkan adalah y = 0.8293x + 1.382 dengan R2    = 0,7024. Lingkaran   harian pertama diduga terbentuk pada kisaran ukuran panjang standart 2,21 mm.   Kata kunci : Pendugaan umur, Larva ikan Hypoatherina sp., Otolith
Tidal Effect on Recruitment East Larvae Fish In East Pelawangan Segara Anakan Cilacap Subiyanto Subiyanto; Niniek Widyorini; Iswahyuni Iswahyuni
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 5, No 1 (2009): Jurnal Saintek Perikanan
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (109.499 KB) | DOI: 10.14710/ijfst.5.1.44-48

Abstract

Observations on transport of fish larvae during low tide in the East Sea has been done Pelawangan interest from July to September 2003. Sampling is performed using Plankton nets 60 cm in diameter and 200 mesh size, as many as 5 times in the full month, either at the time of high tide or low tide. Net withdrawals are carried out for 10 minutes at 2 knots. During studies have arrested 904 individual which consist of 11 families, there are Clupeidae, Engraulididae, Belonidae, Hemiramphidae, Atherinidae, Mugillidae, Ambassidae, Apogonidae, Gerreidae, Pomacentridae, Gobiidae. Most fish larvae are caught fish larvae, adult stage in the sea. Observations show that the influence of tidal changes of fish larvae in the East Pelawangan. Where the tide arrested 472 people (52.21%) and at low tide arrested 432 people (47.79%).  Key words : Tidal, Recruitment, Fish larvae
Co-Authors Boedi Hendrarto Christian B.C. Iswahyuni Iswahyuni Lusiana Rahmawati Niniek Widyorini