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NISBAH KELAMIN DAN UKURAN PERTAMA KALI MATANG GONAD IKAN LAYANG DELES (Decapterusmacrosoma BLEEKER, 1841) DI PERAIRAN TELUK BONE, SULAWESI SELATAN Dahlan, Muh. Arifin; Andy Omar, Sharifuddin Bin; Tresnati, Joeharnani; Umar, Moh Tauhid; Nur, Muhammad
Torani Journal of Fisheries and Marine Science Vol. 25 No. 1 (2015)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15.149 KB) | DOI: 10.35911/torani.v25i1.260

Abstract

This research was conducted to investigate the sex ratio and the first gonadal maturity size of mackerel fish(Decapterus macrosomas Bleeker 1841). Samples were taken from June to October 2013 in the sub-district ofPanyula, District of East Riattang, in Bone region. Sample analysis was conducted at the Fisheries biologylaboratory, Department of Fisheries, Hasanuddin University, Makassar. Sex ratio was analyzed by using chiquadrat-testwhereas the first gonadal maturity size was obtained from the first size of the third-gonadal-maturitystage. There were 782 fish collected with male to female ratio 1,02:1,00. Statistically, the sex ratio from Bone waterswas 1:1, in other words, it is still in a balance condition. The male fish reached gonadal maturity stage at the size of195 mm, whereas the female at 210 mm. Keywords: sex ratio, gonadal maturity size, Mackarel fish, Bone strait.
KEANEKARAGAMAN JENIS IKAN KARANG DI PULAU BADI DAN PULAU KODINGARENG LOMPO Dahlan, Muh. Arifin; Andiewati, Suci; Omar, Sharifuddin Bin Andy; Nur, Muhammad
Torani Journal of Fisheries and Marine Science Vol. 25 No. 2 (2015)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15.153 KB) | DOI: 10.35911/torani.v25i3.2602

Abstract

The research aim is to know the diversity of coral fish in Badi and Kodingareng Lompo islands. The study isheld from May until June 2014. The samples are taken twice for one month by using belt transect method.Transect lines were put on depth 3 meters and each dept was. The observed region is as long 50-meter transectlines with the shoreline margin 2,5 meter at the left and right side of the transect. Analysis of data isdone by calculating the kinds of compositions, abundance, diversity index, uniformity, and domination. Theresult of this research is the composition of coral fish in each island. In Badi islands the composition of coralfish is 50 kinds of fish from 15 families with 131 fish. In Kodingareng Lompo island, the composition of coralfish is 21 kinds of fish from 9 families with 82 fish. In Badi island , the diversity index is 3.3870 andKodingareng Lompo island is 2.5566, the uniformity index Badi island is 0.2606 and Kodingareng Lompoisland is 0.2527, and the dominantion index Badi island is 0.0461 and Kodingareng Lompo island is 0.0967.Keywords: Diversity, Abundance, Coral fish, Badi island, Kodingareng Lompo island
HUBUNGAN PANJANG BOBOT DAN FAKTOR KONDISI IKAN ENDEMIK PIRIK (Lagusia micracanthus, Bleeker 1860) DI SUNGAI SANREGO, SULAWESI SELATAN Nur, Muhammad; Dahlan, Muh. Arifin
Torani Journal of Fisheries and Marine Science Vol. 25 No. 2 (2015)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15.153 KB) | DOI: 10.35911/torani.v25i3.2608

Abstract

This research aimed to study correlation between the weight length and the condition factor of Pirikfish.The sample collection conducted from September 2014 through February 2015 in Sanrego river, LangiVillage, Bone regency, South Sulawesi. The analysis of the samples carried out in the Laboratory of FishBiology, Department of Fisheries, Hasanuddin University, Makassar. The total length was measured usingdigital calliper of 0.01 mm and the weight was measured using the digital scale of 0.001 g. The fish sampleswere dissected and categorized into male and females with the sex gonad maturity. The total samples of theendemic pirik fish collected during the research were 162, 72 male dan 90 female fish. The correlation of theweight length was based on the equation W=0,00003L2,8719 at male fish, W=0,00003L2,8575 in the female fish andin general, the obtained equation was W=0,00003L2,8846. The result of the t test showed that the value washigher than t table; therefore, the Pirik fish in Sanrego rivers had negative allometric growth attern (minor) (b <3), since the addition of body length was faster than the increase of body weight. The analysis of the conditionfactor revelead that the value range of 0,8038-1,2926 with an average 1,0274 in male fish and 0,9263-1,4533with the average of 1,1598 in female fish. This showed that the conditions factors of the endemic pirik fish werelower compared to the female fish.Keywords : Length weight, condition factor, endemic-pirik fish, Sanrego River, South Sulawesi