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All Journal Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology)
M. F. Rahardjo
Departemen Manajemen Sumber Daya Perairan, FPIK-Institut Pertanian Bogor
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Komposisi jenis dan ukuran ikan petek (Famili Leiognathidae) di Perairan Teluk Kendari, Sulawesi Tenggara [Species composition and size of pony fishes, Family Leiognathidae in Kendari Bay, Southeast Sulawesi] Asriyana Asriyana; M. F. Rahardjo; Djamartumpal F. Lumban Batu; Endi S. Kartamihardja
Jurnal Iktiologi Indonesia Vol 11 No 1 (2011): Juni 2011
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v11i1.145

Abstract

Research on species composition and size of pony fish was carried out from August 2009 to June 2010 at three zone in Kendari Bay, Southeast Sulawesi. Fish collection by experimental gillnets (with different mesh sizes %, 1, 1%, 1%, and 2 inch) and seser (0 1 metre and mesh size 0.04 inch). Ten species of Leiognathidae were collected during research. There was six genera of Leiognathidae namely Gazza (1 species), Leiognathus (4 species), Nuchequula (1 species), Photopectoralis (1 species), Eubleekeria (1 species), and Secutor (2 species). Based on number of fish, N. blochii (39.72%) and E. splendens (33.95%) were dominant species on zone I (39.72%), Secutor indicius on zone II (38.75%), and N. blochii (20.50%) and E. splendens (25.10%) on zone III (25.10%). Based on frequency of occurrence during study, E. splendens was resident species (100%), while Photopectoralis bindus and L. dussumieri were rarely (18.18%). Size range and frequency of fish occurrence indicated that Kendari Bay used as nursery ground for pony fish. AbstrakPenelitian tentang komposisi jenis dan ukuran ikan petek dilakukan sejak Agustus 2009 sampai Juni 2010 pada tiga zona di perairan Teluk Kendari. Koleksi ikan dilakukan dengan jaring insang percobaan (dengan ukuran mata jaring ber-beda %, 1, 1 %, 1 %, dan 2 inci) dan alat seser (0 1 meter dan ukuran mata jaring 0,04 inci). Pada penelitian ini berhasil diinventarisasi 10 jenis Famili Leiognathidae dari enam genera yaitu Gazza (1 jenis), Leiognathus (4 jenis), Nuchequula (1 jenis), Photopectoralis (1 jenis), Eubleekeria (1 jenis), dan Secutor (2 jenis). Berdasarkan jumlah individu ternyata Nuchequula blochii (39,72%) dan E. splendens (33,95%) merupakan jenis dominan pada Zona I, Secutor indicius pada Zona II (38,75%), dan N. blochii (20,50%) dan E. splendens (25,10%) pada Zona III. Frekuensi kehadiran famili Leiognathidae selama penelitian bervariasi, E. splendens merupakan penghuni tetap perairan Teluk Kendari (100%) sedang-kan Photopectoralis bindus dan L. dussumieri merupakan jenis yang jarang ditemukan (18,18%). Sebaran ukuran dan frekuensi kehadiran mengindikasikan bahwa ikan petek menggunakan perairan Teluk Kendari sebagai daerah asuhan dan pembesaran.
Komunitas ikan di Telaga Warna, Jawa Barat [Fish community in Telaga Warna, West Java] Sulistiono Sulistiono; M. F. Rahardjo; Charles P.H. Simanjuntak; Ahmad Zahid
Jurnal Iktiologi Indonesia Vol 10 No 2 (2010): Desember 2010
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v10i2.171

Abstract

The research aims to describe fish community in Telaga Warna, including species diversity and food web. Fish was sampled using cast net in three times at rainy season, inter season, and dry season in 2007. Physicochemical parameters were ex situ and in situ. Plankton was identified until genus. Fish samples were observed in laboratory. Water physicochemical support fishes living process in Telaga Warna. All fishes in Telaga Warna are non-native species. Almost of them is grouped as a plankton-feeder which eats on phytoplankton and zooplankton.AbstrakPenelitian bertujuan untuk memerikan komunitas ikan yang menghuni Telaga Warna, mencakup keanekaragaman ikan dan jejaring makanan. Pengambilan contoh ikan menggunakan jala yang dilaksanakan tiga kali pada musim penghujan, pancaroba, dan kemarau tahun 2007. Parameter fisikokimiawi diambil ex situ and in situ. Plankton diidentifikasi sampai tingkat genus. Ikan contoh dianalisis di laboratorium. Kualitas air mendukung kehidupan ikan di Telaga Warna. Semua jenis ikan bukan spesies asli. Hampir seluruh jenis ikan termasuk kelompok planktivora yang memakan fitoplankton dan zooplankton.
KEANEKARAGAMAN IKAN DI PERAIRAN TELUK KENDARI SULAWESI TENGGARA [Fish Diversity in Kendari Bay, Southeast Sulawesi] Asriyana Asriyana; M. F. Rahardjo; S. Sukimin; D. F. Lumban Batu; E. S. Kartamihardja
Jurnal Iktiologi Indonesia Vol 9 No 2 (2009): Desember 2009
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v9i2.183

Abstract

Research on fish diversity was carried out from August to October 2009 with three times of sampling in three stations in Kendari Bay, Southeast Sulawesi. Fish collection using experimental gillnets (with different mesh sizes %, 1, 1%, 1%, 2, 3, and 4 inch) and seser (0 1 meter and mesh size 0.04 inch). During research, 45 species of 30 families were collected. Based on individual quantities, at the first sampling, Sardinella fimbriata was dominant species on Station I and II, S. longiceps on Station III; in the second sampling, S. fimbriata was dominant species on Station I, S. longiceps on Station II, Plotosus canius on S3; in the third sampling, Ambassis sp. was dominant species on Station I, S.longiceps on Station II, Upeneus suphureus and Stolephorus commersonii on S3. Diversity index (H’) was range between 0.512.25, dominance index (C) was range between 0.16-0.83 and evenness index (E) was range between 0.19-0.75.
VARIASI SPASIO-TEMPORAL JENIS MAKANAN IKAN MOTAN, Thynnichthys polylepis DI RAWA BANJIRAN SUNGAI KAMPAR KIRI, RIAU [Spatio-temporal variation in the diet of Thynnichtys polylepis in floodplain river of Kampar Kiri, Riau] Ahmad Zahid; M. F. Rahardjo
Jurnal Iktiologi Indonesia Vol 9 No 2 (2009): Desember 2009
Publisher : Masyarakat Iktiologi Indonesia (Indonesian Ichthyological Society)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32491/jii.v9i2.190

Abstract

The research aimed to describe diet composition of Thynnichthyes polylepis. The diet compositions of population from two sites (Mentulik and Simalinyang) in floodplain river of Kampar Kiri, were compared according to the month. Fishes were captured using experimental gillnet and trap. For food habits analysis, the index of preponderance method was used. The collections were performed monthly from July to December 2008, where the stomach contents of 479 specimens were assessed. Prey items of T. polylepis were basically composed of phytoplankton and zooplankton, especially Cocconeis, Nitzschia, Navicula, Cyclotella, Pleurotaenium, and Testudinella. At site Mentulik, the most common items were Cocconeis, Nitzschia, and Navicula. Conversely, at site Simalinyang, Cocconeis, Pleurotaenium, and Nitzschia more representative. In general, main food of fish origin showed the highest index values at Mentulik, whereas at Simalinyang. The composition of items varied monthly, especially at Simalinyang. Food habits of fish may be flexible according to resource availability in spatial and temporal variation.
Co-Authors Ahmad Zahid Asriyana Asriyana Asriyana Asriyana Charles Parningotan Haratua Simanjuntak D. F. Lumban Batu Djamar Tumpal F. Lumbanbatu E. S. Kartamihardja Endi S. Kartamihardja S. Sukimin Sulistiono Sulistiono