Seasonal yield and composition of an inland artisanal fishery in a humic floodplain ecosystem of Central Kalimantan, Indonesia

Abstract

Gumiri S, Ardianor, Syahrinudin, Anshari GZ, Komai Y, Taki K, Tachibana H. 2018. Seasonal yield and composition of aninland artisanal fishery in a humic floodplain ecosystem of Central Kalimantan, Indonesia. Biodiversitas 19: 1181-1185. Seasonal yieldof an inland artisanal fishery was studied in 2015 in the Takapan Floodplain Lake located along the Rungan River of Central KalimantanProvince-Indonesia. Record on daily fish catch consisting weight data and species composition was made in situ along with a one-yearrainfall data that was collected from the nearest Meteorological Station located in Palangka Raya City airport. Results showed thatthroughout the year, total annual yield of captured fishes reached 4.8 tons comprised of 34 commercial freshwater fish species. Seasonalyield varied considerably in which fish capture was higher during the rainy season than on the dry season. The transition period fromrainy to dry season was found to be the peak period of fish capture in the floodplain. Of the 34 fish species, the most abundant specieswas Channa striata that accounted to almost 50% of total annual fish yield. The two most abundant fishes, Channa striata, andKryptopterus palembangensis were a top predatory blackfish and an omnivorous surface water whitefish, respectively. This resultindicated that the studied floodplain habitat was still in good condition, however, conservation is needed to maintain the sustainability offreshwater fish resource in the future.

The Evaluation of Fish Growth Parameters and Exploitation of Hemibagrus nemurus In The Kotopanjang Reservoir, and The Sembakung River, Indonesia

“…This pattern is adequate related to the migration properties of this species, that they will close to the floodplain for spawning in the dry season and wait for the rainy season [18]. The spawning of blackfish and some freshwater fish has a relation with fluctuation of the rainy season and water level [19]. The change of the rainy season could be affected by the hydrology cycle that moves following the monsoon movement [20].…”

Dinamika hasil tangkapan jenis-jenis ikan gabus (Genus Channa) di Kota Palangka Raya

“…Peningkatan hasil tangkapan terbanyak ada pada bulan Mei-Juni sebesar 660,9 kg. Gumiri et al (2018) menunjukkan bahwa usaha penangkapan ikan pada musim penghujan cukup banyak namun hasil tangkapan sedikit. Tabel 2 Hasil tangkapan jenis-jenis ikan gabus dan curah hujan di Kota Palangka Raya Sedangkan pada masa peralihan dari musim penghujan ke musim kemarau akan meningkatkan hasil tangkapan dan peningkatan tersebut terjadi pada bulan Mei-Juni.…”

“…Dimana peningkatan hasil tangkapan terjadi pada bulan Mei-Juni yang merupakan masa peralihan dari musim penghujan ke musim kemarau. Dan hasil tangkapan yang mendominasi adalah jenis ikan gabus (Channa striata) yang hasil tangkapan hampir 50% dari jenis ikan air tawar yang tertangkap dengan jumlah sebesar 4,8 ton per tahun (Gumiri et al, 2018).…”

“…Gumiri et al (2018) ikan sungai yang paling banyak tertangkap adalah ikan Gabus (Channa striata) yang hampir 50% dari hasil tangkapan jenis ikan lainnya yang ada di sungai. Dan komposisi hasil tangkapan dari ikan gabus (Channa striata), ikan Tahoman (C. micropeltes), ikan kerandang (C. pleurophthalma), ikan kihung (C. licius) dan ikan peyang (C. meruliodes) tidak terlalu jauh perbedaan karena jenis-jenis ikan gabus ini merupakan ikan pemangsa yang mendominasi perairan umum.…”

Exploitation of striped snakehead (Channa striata) in Sempor Reservoir, Central Java, Indonesia: A proposed conservation strategy

“…In addition, to catch pressure, the natural snakehead fish population is also influenced by habitat conditions. Ecologically, the main habitat of this species is swamp waters, but the fish can live in various habitats in rivers with calm currents, lakes and reservoirs (Galib et al 2016;Chan et al 2017Chan et al , 2020Gumiri et al 2018;Setyaningrum et al 2020;.…”