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Habitat Characteristic of Oryzias matanensis Aurich in Towuti Lake Eragradini, Athira Rinandha; Omar, Sharifuddin Bin Andy; Tresnati, Joeharnani
Journal La Lifesci Vol. 5 No. 4 (2024): Journal La Lifesci
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallalifesci.v5i4.1421

Abstract

Lake Towuti, one of the ancient lakes in Indonesia, is the second largest freshwater lake after Lake Toba. One of the endemic fish that live in Lake Towuti is the Matano Medaka fish (Oryzias matanensis Aurich, 1935). Due to land change, Lake Towuti's indicate is in threat of declining, which potentially have an impact on the endemic fish's habitat. The aim of this study is to identify the habitat characteristics of Lake Towuti. The data collected in this study includes temperature, pH, dissolved oxygen, and aquatic plants. Sampling was carried out in the morning, starting at 8:00 WITA and ending at 11:00 WITA at two different stations. Station selection was carried out based on differences in habitat, the presence of aquatic plants, and the presence of fish samples. Habitat characteristics at station one are marked by the number of water plants with the basic substrate types of sand, mud, and stones. In contrast, at station two, it is characterized by the absence of water plants and the basic substrate types of sand, rock, and gravel. Ecological aspects, including water physics and chemistry parameters, did not experience large fluctuations during the study period. The water conditions at each research station were not significantly different, so the water conditions were still good and supported the fish life in Lake Towuti.
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
PERTUMBUHAN IKAN BARONANG LINGKIS, Siganus Canalicullatus (Park, 1797), DI PERAIRAN PANTAI UTARA KABUPATEN KEPULAUAN SELAYAR, SULAWESI SELATAN Omar, Sharifuddin Bin Andy; Fitrawati, Rahmi; Sitepu, Farida Gasing; Umar, Moh. Tauhid; 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.v25i3.2609

Abstract

White-spotted spinefoot, Siganus canalicullatus (Park, 1797) is one of the most economically importantherbivorous fish captured along the coast of Selayar Islands. The present work was undertaken to assess thelength-weight relationship and Fulton's K condition factors of this fish caught in the waters of the northern coastof Selayar Islands District. Those parameters were calculated separately for both sexes. A total of 498specimens of S. canaliculatus consisting of 265 males and 233 females were randomly collected on a monthlybasis between January and June 2015 from local fishermen using gill nets of various mesh size in the coastalwaters of Desa Barat Lambongan, Kecamatan Bontomatene, northern part of Selayar Islands District. The fishwere brought to the laboratory and, after washing, their total length (L) was measured to the nearest 1 mm usinga fish measuring board and the total body weight (W) was recorded to the nearest 0.01 g using an electronicbalance. Each fish was then cut open and the sex were recorded. The length-weight relationships of males andfemales can be expressed as log W = –4.4220 + 2.7772 log L for males, indicated hypoallometric growthpattern; and log W = –4.6840 + 2.9022 log L for females, indicated isometric growth pattern. Overall, conditionfactor values were higher in males than in females.Keywords: condition factor, length-weight relationship, Selayar Islands District, Siganus canaliculatus, whitespottedspinefoot