DINAMIKA POPULASI IKAN TONGKOL (EUTHYNNUS AFFINIS) YANG DI DARATKAN DI KABUPATEN POLEWALI MANDAR = THE DYNAMICS POPULATION OF EASTERN LITTLE TUNA (EUTHYNNUS AFFINIS) IN POLEWALI MANDAR DISTRICT

ABSTRACK
ULANTIKA. Dinamika Populasi ikan Tongkol yang didaratkan di Kabupaten Polewali Mandar. Dibimbing oleh Musbir dan Faisal Amir.
Ikan tongkol (Euthynnus affinnis) adalah salah satu jenis ikan yang di eksploitsi dan didaratkan di Kabupaten Polewali Mandar. Penelitian ini bertujuan untuk menduga parameter populasi e.affinnis meliputi struktur ukuran, kelompok umur, pertumbuhan, mortalitas, laju eksploitasi dan yield per recruitment. Survey lapangan di lakukan dari bulan Juni sampai Juli 2022 di Kab. Polewali Mandar. Data panjang cagak dikumpulkan melalui pengukuran semua hasil tangkapan dari kapal penangkap ikan yang dijadikan sampel. Kelompok umur di analisis menggunakan metode Bhattacharya, L∞ dan K di duga menggunakan Ford dan Walford, M menggunakan Empiris Pauly, Z, F, dan E menggunakan analisis data bantuan software FISAT II. Hasil penelitian bahwa ikan tongkol memiliki kisaran panjang 12-60 cm FL. Ukuran rata-rata 33,02 cm. populasi terdiri dari dua kelompok umur, nilai dugaan F, M, dan Z masing-masing sebesar 1,90, 0,92, 2,82 per tahun dan laju eksploitasi 0,67 per tahun, Y∕Rskrg= 0,0375, Eskrg= 0,67, sedangkan Y∕Rmax= 0,0387 Emax= 0,80 gram∕recruitmen.
Kata Kunci : Dinamika Populasi, Ikan Tongkol, Kabupaten Polewali Mandar.

ABSTRACT
ULANTIKA. “The Dynamics Population of Eastern Little Tuna (Ethynnus affinis) in Polewali Mandar District ” under guidance of Musbir as Main Supervisor and Faisal Amir as Second Supervisor.
Eastern Little Tuna (Euthynnus affinis) is one species who exploited and landed in Polewali Mandar District. This study aims to estimate the population of e. affinis including the size, group of age, growth mortality, exploitation rate and yield per recruitment and the map of the fishing area. The survey from Juni to Juli 2022 at Polewali Mandar District. Fork lengrh data were collected by measuring all catches from the sample of fishing vessel. The group of age were analayzed by using the Bhattacharya Method, L∞ and K were estimated using Ford and Walford, M using the Empirical Pauly, Z, F and E using the Data analysis using FISAT II software. The results showed that Eastern Little Tuna has length range of 12-60 cm FL. The average of length are 33,02 cm. The population consists of two groups of age, the estimaed values of F, M, and Z are 1.90, 0.92, 2.82 per year recpectively and the exploitation rate is 0.67 per year, Y/R now = 0,0375,, E now =0.67, and Y/R max = 0,0387 E max = 0.80 grams/recruitment.

Keywords: Dynamics Population, Eastern Little Tuna (Ethynnus affinis), Polewali Mandar District.