Aspek Reproduksi Ikan Louhan Hibrid Sebagai Ikan Asing Invasif  Di Danau Matano, Sulawesi Selatan

Hedianto, Dimas Angga; Sentosa, Agus Arifin; Satria, Hendra

doi:10.15578/bawal.10.2.2018.69-82

Cited by 4 publications

(7 citation statements)

References 16 publications

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“…However, Flowerhorn fish found at depths of more than 15 m have a large size. [23] also reported that the bottom substrate in the form of rocky sand at a depth of more than 15 m is the main spawning area for Flowerhorn fish in Lake Matano.…”

Section: The Aquatic Environment Of Lake Mahalonamentioning

confidence: 91%

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The abundance of alien fish species flowerhorn (Cichlasoma trimaculatum (GÜNTHER, 1867) in its fishing ground area at Lake Mahalona, South Sulawesi

Nasution¹,

Muchlis²,

Cinnawara³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Lake Mahalona is located in Towuti District, South Sulawesi Province. There are 29 species of fish found in Lake Mahalona and most of them are endemic fish. The presence of alien species deliberately or unexpected is one of threats causing the declining of the number of biodiversity in fresh waters. This study aims to determine the relative abundance of alien fish species Flowerhorn in its fishing ground area at Lake Mahalona. The research was conducted from January to June 2021 at six stations. Fish samples were obtained by using gill nets. The total Flowerhorn caught during the study were 15,677, the most caught in January was 3,346 and the least in June was 1,451. The Flowerhorn in January were the most number of fish at Kusapa (735), February and March at Muara (566 and 618), April at Tandumata (593), May and June at Badilla (434 and 375). The highest number and relative abundance of Flowerhorn fish were found at Kusapa in January (735 and 33.23%), while the lowest number and relative abundance of Flowerhorn fish were found at Lengkomali in June (129 and 4.62%). Flowerhorn as a alien fish species is distributed throughout the Lake Mahalona station. Flowerhorn fish occupy a lot of habitats with lots of aquatic plants, sandy and rocky substrates.

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Section: The Aquatic Environment Of Lake Mahalonamentioning

confidence: 91%

“…According to [23] and [24], Flowerhorn fish are able to adapt well to all types of habitat characteristics and various types of substrates. The dominance of Flowerhorn fish is seen in locations with dominant sandy and rocky bottom substrates with lots of aquatic plants or grass.…”

Section: The Aquatic Environment Of Lake Mahalonamentioning

confidence: 99%

The abundance of alien fish species flowerhorn (Cichlasoma trimaculatum (GÜNTHER, 1867) in its fishing ground area at Lake Mahalona, South Sulawesi

Nasution¹,

Muchlis²,

Cinnawara³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Spesies ini dapat menekan spesies endemik yang hidup di danau tersebut. Ikan invasif ini menyebar di zona litoral yang merupakan habitat bagi berbagai spesies ikan endemik di Danau Matano (Hedianto et al 2018;Sentosa & Hedianto 2019).…”

Section: Pendahuluanunclassified

Pertumbuhan dan Mortalitas Ikan Endemik Opudi (Telmatherina prognatha Kottelat, 1991) di Danau Matano, Sulawesi Selatan

Chadijah¹,

Wang²

2020

J. Ilmu. Pertan. Indones.

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Lake Matano is an ancient lake that has a high endemicity. Opudi fish (Telmatherina prognatha) is an endemic fish that is vulnerable to extinction and needs to be preserved. The threat of invasive species and habitat degradation can cause a decrease in opudi fish populations. This study aimed to examine the growth parameters associated with growth coefficients and mortality in Lake Matano so that population can be sustainable. The study was conducted at Lake Matano from March 2018 to February 2019. Samples of fish were caught using a net bag measuring 30 m long, 2 m wide with a mesh size of 0.5 inches. Analysis of fish growth was based on total length-frequency data. These data were analyzed using the FISAT II software. The sizes of male and female opudi fish obtained ranged from 30-70 mm. Growth patterns of von Bertalanffy butina in male fish are male Lt = 76.50 [1-e-0.46 (t + 0.47)] and female fish Lt = 74.05 [1-e-0.51 (t + 0.52)]. The total mortality value of male fish was higher (Z = 1.65) compared to female fish (Z = 1.50), the natural mortality value of male opudi fish was lower (M = 0.84) compared to that of female fish (M = 0.91). Keywords: endemic fish, growth, mortality, Telmatherina prognatha

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“…Danau Matano yang dikenal sebagai danau purba dengan tingkat endemisitas tinggi (Prianto et al, 2016), telah terindikasi masuknya beberapa jenis ikan introduksi (Herder et al, 2012) dan invasif yang mendominasi, yaitu ikan louhan dari famili Cichlidae (Hedianto & Satria, 2017;Hedianto et al, 2018) yang merupakan jenis ikan hibrid dari beberapa spesies Cichlid sehingga nama ilmiahnya tidak dapat ditentukan (Nico et al, 2007;Ng & Tan, 2010;McMahan et al, 2010). Ikan louhan diduga masuk ke perairan Danau Matano secara tidak sengaja (unintentional introduction) pada awal 2000 (Alitonang et al, 2015).…”

Section: Pendahuluanunclassified

“…Ikan louhan diduga masuk ke perairan Danau Matano secara tidak sengaja (unintentional introduction) pada awal 2000 (Alitonang et al, 2015). Selama kurun waktu 10-15 tahun telah menyebabkan ikan louhan mampu berkembang pesat dan berkembangbiak di perairan Danau Matano (Hedianto & Satria, 2017;Hedianto et al, 2018). Ikan ini telah menyebar pula di seluruh perairan Danau Matano, terutama di zona litoral (Sentosa & Hedianto, 2019).…”

Section: Pendahuluanunclassified

Interaksi Trofik Komunitas Ikan Di Danau Matano, Sulawesi Selatan Pasca Berkembangnya Ikan Asing Invasif

Hedianto

Sentosa

2019

JURNAL PENELITIAN PERIKANAN INDONESIA

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ABSTRAKInteraksi trofik pasca masuknya ikan introduksi ataupun ikan asing invasif merupakan dasar untuk mengkaji tekanan ekologis terhadap ikan asli. Penelitian ini bertujuan untuk menganalisis interaksi trofik komunitas ikan pasca berkembangnya jenis-jenis ikan asing invasif di Danau Matano, Sulawesi Selatan. Ikan contoh diperoleh dari hasil tangkapan jaring insang percobaan, jala lempar, dan seser pada Mei, Oktober, dan November 2015 serta Februari, Juli, dan September 2016. Analisis ekologi trofik yang dilakukan meliputi indeks bagian terbesar, tingkat trofik, luas relung dan tumpang tindih relung makanan, serta pola strategi makan. Hasil penelitian menunjukkan komunitas ikan yang tertangkap di Danau Matano terdiri atas 9 famili, 11 genera, dan 17 spesies. Ikan louhan mendominasi komunitas ikan di Danau Matano sebesar 53,62%. Makanan alami yang banyak dimanfaatkan oleh sejumlah ikan dalam komunitas adalah insekta (Diptera), Gastropoda (Tylomelania sp.), dan larva insekta (Chironomidae). Kelompok trofik komunitas ikan di Danau Matano terdiri atas detritivora, herbivora, insektivora, zoobentivora, dan piscivora. Masuknya ikan introduksi memunculkan kelompok trofik baru (detritivora dan herbivora). Ikan introduksi cenderung memiliki luas relung makanan yang lebih bervariasi. Kompetisi terhadap makanan alami kategori moderat banyak terjadi antara ikan asli dengan louhan. Strategi pola makan ikan asli di Danau Matano cenderung bersifat spesialis, sedangkan ikan introduksi memiliki strategi pola makan yang lebih bervariasi dan oportunistik. Ikan louhan sebagai ikan introduksi dominan yang bersifat invasif mampu memanfaatkan seluruh sumber daya makanan alami yang tersedia dan menempati tingkat trofik tertinggi di Danau Matano. Tekanan ekologi terhadap ikan asli oleh ikan asing invasif di Danau Matano terjadi karena adanya kompetisi terhadap makanan alami. Kata Kunci: Danau Matano; ikan asing invasif; ikan louhan; interaksi trofik; strategi pola makan ABSTRACTTrophic interactions post-develpment of non-native fish or invasive alien fish species are the basis knowledge for assessing and preventing the ecological pressure on native fish. This research aims to analyze the trophic interactions of fish community post-development of invasive alien fish species in Lake Matano, South Sulawesi. Fish samples were obtained from the catch of experimental gill nets, cast nets, and push nets in May, October, and November 2015 along with February, July, and September 2016. Trophic ecological analysis carried out included index of preponderance, trophic level, niche breadth and niche overlap of natural food, and feeding strategy. The fish community caught in Lake Matano consists of 9 families, 11 genera, and 17 species. Flowerhorn cichlid dominates the fish community in Lake Matano by 53.62%. Natural foods that are widely used by a number of fish in the community are Insecta (Diptera), Gastropods (Tylomelania sp.), and larvae of Insecta (Chironomidae). The guild trophic of fish community in Lake Matano consists of detritivores, her...

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Aspek Reproduksi Ikan Louhan Hibrid Sebagai Ikan Asing Invasif Di Danau Matano, Sulawesi Selatan

Cited by 4 publications

References 16 publications

The abundance of alien fish species flowerhorn (Cichlasoma trimaculatum (GÜNTHER, 1867) in its fishing ground area at Lake Mahalona, South Sulawesi

The abundance of alien fish species flowerhorn (Cichlasoma trimaculatum (GÜNTHER, 1867) in its fishing ground area at Lake Mahalona, South Sulawesi

Pertumbuhan dan Mortalitas Ikan Endemik Opudi (Telmatherina prognatha Kottelat, 1991) di Danau Matano, Sulawesi Selatan

Interaksi Trofik Komunitas Ikan Di Danau Matano, Sulawesi Selatan Pasca Berkembangnya Ikan Asing Invasif

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