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Baca Juga : DINAMIKA POPULASI IKAN TONGKOL ABU-ABU (THUNNUS TONGGOL) YANG DIDARATKAN DI PANGKALAN PENDARATAN IKAN (PPI) UJUNG SERANGGA, KABUPATEN ACEH BARAT DAYA (CUT HAYATUL HUSNA, 2019) ,

Baca Juga : PRODUKTIVITAS DAN SUSEPTABILITAS SPESIES IKAN TONGKOL ABU-ABU (THUNNUS TONGGOL) YANG DIDARATKAN DI PANGKALAN PENDARATAN IKAN (PPI) UJUNG SERANGGA, KABUPATEN ACEH BARAT DAYA (Arum Maiya Makhfirah, 2019) ,

t ikan antara 956 - 4847g. hasil analisa hubungan panjang berat ikan tongkol abu-abu (thunnus tonggo)dengan menggunakan rumus didapatkan pola pertumbuhan ikan tongkol abu-abu bersifat allometrik negatif dengan nilai b 2,792 dimana pertambahan panjang lebih cepat berbanding pertambahan bobot tubuh. kebiasaan makan ikan tongkol abu-abu (thunnus tonggol)adalah terdiri dari ikan teri, udang, dan cumi-cumi. makanan utama ikan tongkol abu-abu yaitu ikan teri dengan nilai indeks preponderance yang paling tertinggi nilainya sebesar 95,4%. panjang usus ikan rata-rata 20-34 (cm). maka diperoleh panjang usus relative (rlg) ikan tongkol abu-abu 1 : 0,29 dari panjang total nya. kata kunci : hubungan panjang berat, kebiasaan makan, dan ikan tongkol (thunnus tonggol). ? abstract the purposes of study were to determine the relationship between weight length and hand feeding habits of longtail thunnus (thunnus tonggol). this research was conducted in the water at southwest aceh from august 2018 to november 2018 which was located at the ppi (fish landing base) in ujung serangga, susoh sub-district. longtail thunnus (thunnus tonggol) is known as pelagic fish that has economic value in indonesian fisheries. the spread of this species is quite unique compared to other species belonging to the genus thunnus which are commonly found in the deep see. this study used the analysis of linear allometrick model (lam) equation. the longtail (thunnus tonggol) was taken from the catch of the fishermen. the number of longtail (thunnus tonggol) observed by the weight-length were 246 fish and the observation sample of fish feeding habit was 27 fish. the total length of the fish ranges from 39.5 cm - 67.5 cm and the weigh t of the fish is around 956 - 4847g. the results analysis of the long-weight relationship of longtail (thunnus tonggol) using the formula found that the longtail growth pattern was negative allometric with a value of b 2.792 where the length increase was faster than the body weight gain. the food of longtail (thunnus tonggol) is composed of anchovies, shrimp, and squid. the main feed of longtail is anchovy with the highest preponderance index value of 95.4%. fish intestine length of an average of 20-34 (cm). therefore, it was obtained that the relative intestine length (rlg) of longtail 1: 0.29 of the total length. keywords: length –weight relationship, feeding habits, and

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