POLA DAN MUSIM PEMIJAHAN IKAN TONGKOL KOMO (Euthynnus affinis Cantor, 1850) DI LAUT JAWA

Thomas Hidayat, Endah Febrianti, Yoke Hani Restiangsih

Abstract


Ikan tongkol komo (Euthynnus affinis, Cantor 1850) merupakan salah satu jenis kelompok ikan pelagis besar yang banyak didaratkan oleh armada jarring insang dan pukat cincin di Tegal. Tersedianya data dan informasi tentang pola dan musim pemijahan merupakan bagian dari pengetahuan yang diperlukan untuk mengetahui status sumberdaya bagi upaya pengelolaanya. Penelitian ini ditujukan untuk mendapatkan pola dan musim pemijahan ikan tongkol komo di Laut Jawa khususnya di pantai Tegal dan sekitarnya. Penelitian dilakukan pada bulan Februari-Desember 2012 di tempat pendaratan ikan kota Tegal, Jawa Tengah. Pendugaan pola pemijahan berdasarkan pengamatan sebaran frekuensi diameter telur sedangkan pendugaan musim pemijahan menggunakan pendekatan Indeks Kematangan Gonad (IKG) atau Gonado somatic index (GSI) bulanan. Analisis data oseanografi khususnya suhu permukaan laut (SPL) dan konsentrasi klorofil-a berdasarkan citra satelit Aqua Modis digunakan sebagai data dukung musim pemijahan. Hasil penelitian menunjukkan pola pemijahan tongkol komo di Laut Jawa memiliki strategi reproduksi beberapa kali memijah (partial spawner). Fekunditas berkisar antara 225.760-2.601500 telur. Musim pemijahan terjadi pada Juni-Agustus dimana konsentrasi klorofil-a tinggi.

Kawakawa (Euthynnus affinis, Cantor 1850) is one of large pelagic species group caught by drift gill nets and purse seine fisheries in the Java Sea. The information of spawning characteristics is crucial for fisheries management. This research aims to determine the spawning strategy of kawakawa in the Java Sea mainly in Tegal and adjacent waters. Observation has been conducted during February-December 2012 in Tegal, Central Java. The estimation the spawning season determined by using Gonad somatic index (GSI) and investigated with profiling oceanographic data on sea surface temperature (SST) and concentration of chlorophyll-a derived from Aqua Modis satellite imagery. The results showed the reproductive strategy of kawakawa in the Java Sea is partial spawner. Fecundity ranged between 225,760-2,601,500 eggs and the spawning season occurs in June-August where concentrations of chlorophyll-a high.


Keywords


Tongkol komo; Euthynnus affinis; musim pemijahan; fekunditas; Laut Jawa

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References


Anonimous. (2015). Statistik Perikanan Tangkap di Laut Menurut Wilayah Pengelolaan Perikanan Laut Negara Republik Indonesia (WPP-NRI) 2005-2014. Kementerian Kelautan Perikanan Tangkap, Direktorat Jenderal Perikannan Tangkap, 2015.

Cheunpan, A. (1984). Sexual maturity, size at first maturity and spawning season of longtail tuna (Thunnus. tonggol), eastern little tuna (Euthynnus affinis) and frigate mackerel (Auxis thazard) in the Gulf of Thailand. Rep.Mar.Fish.Div.Dep.Fish. Bangkok, 43:22 p.

Claereboudt, M.R., Al-Oufi, H., Hermosa, G., & Jamir, T.V. (2002). Plausible cause of massive fish kills on the Al-Batinah coast, Sultanate of Oman. Sultan Qaboos. In: Claereboudt, M.R., H.S. Al-Oufi, J. Mc Ilwain, S. Goddard, (Eds.), International conference on fisheries, aquaculture and environment in the NW Indian Ocean. Sultan Qaboos University, Muscat, p. 123–132.

Claereboudt M.R., McIlwain, J.L., Al-Oufi, H.S., & Ambu-Ali, A.A. (2005) Patterns of reproduction and spawning of the kingfish (Scomberomorus commerson, Lac´ep‘ede) in the coastal waters of the Sultanate of Oman. Fisheries Research. 73(3): 273–282.

Collete B.B., & Nauen, C.E. (1983). FAO Special Catalogue. Vol. 2 Scombrids of the World an Annotated and Illustrated Catalogue of Tunas, Mackerels, Bonitos, and Related Species Known to Date. FAO Fisheries Synopsis. 125(2): 33-34.

Cushing, D.H. (1975). Marine Ecology and Fisheries. Cambridge University Press. London. 278 p.

Durant, J. M., D O Hjermann, Ottersen, G., & Stenseth, N. C. (2007). Climate and the match or mismatch between predator requirements and resource availability. Clim Res 33: 271–283

Effendie, M. I. (1997). Metoda Biologi Perikanan . Yayasan Agromedia. Yogyakarta, 112 halm.

Effendie, M. I. (2002). Biologi Perikanan. Yayasan Pustaka Nusantara. Bogor, 163 halm.

Hendiarti, N., Suwarso, Aldrin, E., Amri, K., Sachoemar, S. I., & Wahyono, I. B. (2005). Seasonal variation of pelagic fish catch around Java Sea. Oceanography 18 (4), 112-123.

Holden, M.J., & Raitt, D.F.S. (1974). Manual of Fisheries Science Part 2. Methods of Recources Investigation and their Application. Food and Agriculture Organization. Rome, 135 p.

Inaku, D. F. (2011). Analisis Pola Sebaran dan Pengembangan Area Upwelling di Bagian Selatan Selat Makassar. Skripsi. Institut Pertanian Bogor. Bogor.

Illahude A. G. (1970). On the occurance of upwelling in southern Makassar Strait. Marine Research Indonesia. 10, 81-107.

Klinmuang, H. (1978). Preliminary Studies on the Biology of Tunas in the West of the Gulf of Thailand and off the East Coast of Peninsular Malaysia. Pelagic Fish.Rep.Mar. Fish.Div.Dep.Fish. Bangkok, 5-27.

Mackie, M., & Lewis, P.A.W. (2001). Assessment of gonad staging systems and other methods used in the study of the reproductive biology of narrow-barred Spanish mackerel, Scomberomorus commerson, in Western Australia. Fisheries Research Report 136, Department of Fisheries, Government of Western Australia, North Beach.

Murua, H., & Rey, F.S. (2003). Female reproductive strategies of marine fish spesies of the north Atlantic. J. Northw. Atl. Sci, 33:23-31.

Muthiah, C. (1985). Maturation and Spawning of Euthynnus affinis, Auxis thazard and A. rochei in the Mangalore Inshore Area During 1979 to 1982. In Silas E. G. Ed. Tuna Fisheries of the Exclusive Economic Zone of India: Biology and Stock Assessment. Bull.Cent.Mar.Fish.Res.Inst., Cochin, 36, 71–85.

Nissar, K.K.S., Rashid, F., Girija, G. Phadke & Desai, A.Y. (2015). Reproductive biology of little tuna (Euthynnus affinis) in the Arabian Sea. Eco. Env. & Cons. 21 (4): 2015, 115-118.

Nikolsky, G. V. (1963). The Ecology of Fishes. Academic Press. London.

Rao, K.V.N. (1964). An account of the ripe ovaries of some Indian tunas. Proc. Symp. Scombroid Fishes, Part 2. Mar.Biol.Assoc. India. 1, 733–43.

Rohit P., Chellappan, A., Abdusssamad, E. M., Joshi, K. K., Said Koya, K. P., Sivadas, M., Ghosh, S., Rathinam, A. M. M., Kemparaju, S., Dhokia, H. K., Prakasan, D., & Beni, N. (2012). Fishery and Bionomics of the Little Tuna, Euthynnus Affinis (Cantor, 1849) Exploited From Indian Waters. Indian J. Fish., 59(3), 33-42.

Sediadi A. (2004). Effek upwelling terhadap kelimpahan dan distribusi fitoplankton di perairan Laut Banda dan sekitarnya. Makara, Sains. 8 (2), 43-51.

Siraimeetan, P. (1985). On the occurrence, size distribution, morphometry and feeding habits of the juveniles of Euthynnus affinis (Cantor), Auxis thazard (Lacepede), and Sarda orientalis (Temminck and Schlegel), along the Tuticorin Coast, Gulf of Mannar. Bull. Cent. Mar. Fish. Res. Inst. 36, 104-114.

Smith, S.L. (2001). Understanding the Arabian Sea: reflections on the 1994–1996 Arabian Sea Expedition, Deep Sea Res. II 48 (6–7), 1385–1402.

Suwarso. (2009). Variasi Musiman Hasil tangkapan tongkol (Euthynnus sp.; Fam. Scombridae) di Laut Jawa. Prosiding Seminar Nasional Tahunan VI Hasil Penelitian Perikanan dan Kelautan. Universitas Gajah Mada. Yogyakarta. 6 halm.

Widodo, J. (1988). Population Dynamic and Management of “Ikan Layang”, Scad Mackerel, Decapterus spp (Piscess: Carangidae) In Java Sea. Dissertation Doctor of Philosophy. University of Washington,150 p.




DOI: http://dx.doi.org/10.15578/bawal.8.2.2016.101-108

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