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Lampiran 1. Kapal tuna longline
Spesifikasi Kapal :
Panjang total : 23.40 m
Panjang garis tegak : 18.45 m
Lebar : 5.20 m
Tinggi : 2.20 m
Sarat air sesuai desain (Desaigned draft) : 1.60 m
Berat muatan : 60 ton
Isi kotor : 86 ton
Isi bersih : 51 ton
Fish bait hold : 32 m3
Bait hold : 2.3 m3
Fuel oil tank : 18,7 m3 Fresh water tank : 4.5 m3
Mesin : YANMAR 240 PS X 2000 RPM
Lampiran 2. Pengukuran panjang ikan tuna mata besar di kapal tuna longline
Lampiran 3. Kriteria tingkat kematangan gonad menurut Schaefer dan Orange ( 1956)
Tingkat Keadaan gonad D e s k r i p s i (ovary)
I. D Gonad memanjang d s kelamin dapat
r satu ara Berkembang
(Immature) an ram ing, jenip
ditentukan dengan kaca pembesar. Ovari jernih berwarna abu-abu hingga kemerah-merahan, telu per satu dapat dilihat dengan kaca pembesar
II. Perkembangan I n dengan
(early maturing) Ovary membcsar, berwarna kemerah-meraha
pembuluh kapiler,. bulatan telur belum dapat terlihat dengan mata telanjang, ovari mengisi sekitar setengah ruang bawah
III. Perkembangan II sar dan membengkak , berwarna orange (late maturing) Ovary membe
kemerah-merahan, butiran telur sudah dapat terlihat dengan mata biasa, ovari mengisi 2/3 ruang bawah IV. Matang
kit (Ripe)
Ovari sangat membesar, butiran telur membesar dan berwarna jernih, dapat keluar dari lumen dengan sedi penekanan pada bagian perut, gonad mengisi penuh ruang bawah.
V. Memijah
)
memijah sekarang (salin) dan mijah
a (Spawning
Termasuk yang
sebelumnya (post-spawning) , ovari sangat besar dan lunak (karena mijah). Telur matang yang tertinggal dalam keadaan terserap, telur berwarna jernih dan ad yang masih tertinggal dalam ovari. Telur akan keluar dengan sedikit penekanan pada perut.
ampiran 4. Teknik Pembuatan Preparat Histologi (Angka et al., 1996)
atif (Bouins
2. 80%, 90%,
3. baru selama satu jam.
4. alam xylol : parafin (1:1) selama ¾ jam
5. e dalam parafin I, parafin II, dan parafin
6. ri parafin, kemudian dicetak dalam cetakan
7. otong setebal 5-6 μm. Selanjutnya potongan
8. dehidrasi. Gelas
L
1. Fiksasi : sampel/jaringan dimasukkan ke dalam larutan fiks
alkohol) yaitu campuran asam fikrat, formalin, dan asam asetat pekat dengan perbandingan 15:5:1. Larutan ini berfungsi untuk mencegah terjadinya kerusakan jaringan, terjadinya proses osmosis, penciutan jaringan dan mengawetkan jaringan agar mendekati atau sama seperti asalnya.
Dehidrasi : sampel dipindahkan secara bertahap ke dalam alkohol
95% dan 100% masing-masing selama 2 jam. Selanjutnya sampel dipindahkan kedalam alkohol 100% selama semalam.
Clearing : sampel dipindahkan kedalam alkohol 100%
Selanjutnya dipindahkan kedalam alkohol-xylol, xylol I, xylol II dan xylol III, masing-masing selama setengah jam.
Impregnasi : Sampel dipindahkan ked (didalam oven) pada suhu 65-70oC Embedding : sampel dipindahkan k III masing-masing selama ¾ jam. Blocking : sampel dikeluarkan da dan didiamkan selama semalam. Pemotongan jaringan. Sampel dip
sampel ditetesi larutan albumin gliserin agar sampel jaringan teregang. Gelas benda (object glass) dengan jaringan di ataasnya ditaruh di atas hot plate suhu 40oC agar agak kering. Langkah berikutnya sampel diwarnai.
Pewarnaan jaringan : Setelah disayat maka dilakukan proses
benda berisi jaringan dimasukkan ke dalam xylol I, xylol II. Alkohol 100%I, 100% II, 95%, 90%, 80%, 70% dan 50% masing-masing selama 3 menit, kemudian preparat dicuci sampai berwarna putih. Selanjutnya diwarnai dengan haematocylin selama 5-7 menit, dicuci dengan air 5-7 menit, direndam dalam larutan eoisin 3 menit dan dicuci dengan air kran mengalir. Setelah dicuci kembali dilakukan dehidrasi, caranya yaitu memasukkan gelas benda yang berisi jaringan ke dalam alkohol 50%, 70%,85%, 90%, 95%, 100% I,
100% II, xylol I dan xylol II masing-masing selama 2 menit. Langkah berikutnya tetesi dengan balsem Canada atau Entellen dan langsung ditutup dengan gelas penutup. Sampel dibiarkan selama semalam (12 jam) agar kering dan tidak ada udara antara gelas tutup dan gelas benda. Selanjutnya sampel diamati di bawah mikroskop.
Lampiran 5. Sebaran Frekuensi Ukuran Kelas Panjang dan Hubungan Panjang Berat
. Sebaran F
an (ekor) Ikan Tuna Mata Besar (T.obesus)
rekuensi Ukuran kelas Panjang a
Kelas ukuran panjang (cm) Jumlah ik
108-115 6 116-123 6 124-131 8 132-139 13 140-147 8 148-155 1 Jumlah 42
. Hubungan Panjang Berat
ta Besar (Thunnus obesus)
istics b
odel Regresi Ikan Tuna Ma M
Berat Total = 0,0381 + 2, 8623 Panjang Cagak Koefisien : a = 0,0381 b = 2,8623 Regression Stat Multiple R 0,9875 R Squar Adjusted R e 0,9753 0,9500 Square 2 Standard Error Observations 0,8477 42 Variable 1 Variable 2 c. Uji –t Mean 130,40 44023,81 Varian Observ ce 1 ons lation 2 115,32 13096980,3 ati Pearson C 42 42 orre df 0,96 41 t Stat 6,77 t table 2,02
s Ho : b = 3 (pola pertumbuhan iso ic
tusannya tolak Ho
Hipotesi metr )
Hipotesis H1 : b ≠ 3 (pola pertumbuhan allometrik) Hasil perhitungan nilat t hitung > t tabel , maka kepu
Lampiran 6. Faktor kondisi Ikan Tuna Mata Besar (T.obesus) a. Hubungan Faktor kondisi dengan Ukuran Panjang
Kelas Panjang (cm) Faktor kondisi Berat rata-rata (gr)
108-115 2,016 28833,33 116-123 1,922 33333,33 124-131 2,003 42625,00 132-139 1,915 47230,77 140-147 1,921 56000 148-155 2,038 73000 . Hubungan Faktor Kondisi dengan TKG
TKG Faktor kondisi Berat rata-rata (g) b
I 1,942 43071,43 II 1,981 45166,67
Lampiran 7. Tingkat Kematangan Gonad (TKG) dan Indeks Kematangan Gonad
. TKG pada Selang Kelas Panjang
Kelas ukuran panjang (cm) Jumlah
(IKG) Ikan Tuna Mata Besar (T.obesus) a I 108-115 4 II IV 2 0 116-123 4 2 0 124-131 8 0 0 132-139 6 6 1 140-147 5 2 1 148-155 1 0 0 Jumlah 28 12 2
. Hubungan TKG dengan IKG
TKG Rata-rata IKG b
I 0,496 II 0,888 IV 2,093
. Hubungan TKG dengan Waktu Jumlah c Bulan I II IV Maret 2 6 0 April 4 6 0 Mei 22 0 0 Oktober 0 0 2 Jumlah 28 12 2
. Hubungan IKG dengan Waktu Bulan IKG rata-rata d
Maret 0,897 April 0,656 Mei 0,491 Oktober 2,093
Lampiran 8. Pola Sebaran Diameter Telur Ikan Tuna Mata Besar (T.obesus) a. Pola Sebaran Diameter Telur Ikan Tuna Mata Besar (T.obesus) Gabungan.
Selang kelas diameter telur (μm) Frekuensi (%)
99,49-165,94 0,33 165,95-232,30 2,83 232,31-298,76 16,00 298,77-365,22 8,67 365,23-431,68 21,83 431,69-498,14 27,83 498,15-564,60 5,50 564,61-631,06 8,67 631,07-697,52 4,67 697,53-763,98 2,17 763,99-830,44 1,50 Jumlah 600
. Pola Sebaran Diameter Telur Ikan Tuna Mata Besar (T.obesus) Bagian Posterior b n=200 0 10 20 30 40 50 60 99, 5-173 ,40 173,4 1-247, 31 247, 32-321, 22 321, 23-395, 13 395, 14-469, 04 469, 05-542, 95 542, 96-616, 86 616, 87-690, 77 690, 78-764, 68 764, 69-838, 59
Selang Kelas Diameter Telur (µm)
Ju m lah t e lu r (b u ti r)
. Pola Sebaran Diameter Telur Ikan Tuna Mata Besar (T.obesus) Bagian Median c n=200 0 5 10 15 20 25 30 35 40 99, 5-1 73,40 173 ,41 -24 7,31 247, 32-321,2 2 321, 23-395,1 3 395, 14-469, 04 469, 05-542,9 5 542, 96-616,8 6 616, 87-690,7 7 690, 78-764,6 8 764, 69-838,5 9
Selang Kelas Diameter Telur (µm)
J u ml a h t e lu r (b u tir )
. Pola Sebaran Diameter Telur Ikan Tuna Mata Besar (T.obesus) Bagian Anterior d n=200 0 10 20 30 40 50 60 99,5 -173 ,40 173, 41-2 47,3 1 247, 32-3 21,2 2 321, 23-3 95,1 3 395, 14-4 69,0 4 469, 05-5 42,9 5 542, 96-6 16,8 6 616, 87-6 90,7 7 690, 78-7 64,6 8 764, 69-8 38,5 9
Selang Kelas Diameter Telur (µm)
J um la h Te lur ( but ir )
