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Journal : Samakia: Jurnal Ilmu Perikanan

IKTIOFAUNA DI HILIR SUNGAI KLAWING KABUPATEN PURBALINGGA, JAWA TENGAH Taufik Budhi Pramono; Diana Arfiati; Maheno Sri Widodo; Uun Yanuhar
Samakia : Jurnal Ilmu Perikanan Vol 9 No 2 (2018): Samakia: Jurnal Ilmu Perikanan
Publisher : Faculty of Science and Technology University Ibrahimy

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (165.59 KB) | DOI: 10.35316/jsapi.v9i2.227

Abstract

The status and potential of ichtyofauna resources in freshwaters, especially downstream of the river, must be monitored and evaluated frequently. Land use along the downstream river is often used as mining and industrial activities. The purpose of this study was to find out ichtyofauna in down stream of the Klawing Purbalingga River in Central Java. The study was conducted in January-March 2017 with descriptive exploratory method. Sampling using gill nets with the help of local fishermen. The fish obtained were identified and grouped by family to the species level. The results showed that in the down stream of the Klawing River there were species diversity consisting of 13 species, 7 families and 13 genera. Ichtyofauna from Cyprinidae family dominate as many as 6 species followed by Bagridae family 2 species. One introduced species of Osphronemus gouramy and one invasive alien fish species Hypostomus plecostomus and other species were indigenous species.
Parachromis managunesis (Günther, 1867): Keberadaan Ikan Predator Asing di Pulau Lombok, Nusa Tenggara Barat: Jaguar chiclid di Lombok Veryl Hasan; Maheno Sri Widodo
Samakia : Jurnal Ilmu Perikanan Vol 12 No 2 (2021): Samakia: Jurnal Ilmu Perikanan
Publisher : Faculty of Science and Technology University Ibrahimy

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (204.732 KB) | DOI: 10.35316/jsapi.v12i2.1292

Abstract

The entry of foreign predatory fish into Indonesian open waters had the potential as a disease vector, predation, and damaging food webs that would have a systemic impact on the local ecosystem. In this study, we report the presence of the foreign predatory fish Jaguar cichlid Parachromis managuensis (Günther, 1867) from Central America in the Lingsar River, West Lombok Regency. This record is the first time for this species in Lombok, where previously this fish was found in Java. A description of the morphological characters of the captured specimens is provided in the discussion.
Manajemen Kesehatan Larva Kerapu Cantang (Epinephelus fuscoguttatus x Epinephelus lanceolatus) di BBRBLPP Gondol Muh. Sulaiman Dadiono; Maheno Sri Widodo; Emyliana Listiowati; Baruna Kusuma
Samakia : Jurnal Ilmu Perikanan Vol 13 No 2 (2022): Samakia: Jurnal Ilmu Perikanan
Publisher : Faculty of Science and Technology University Ibrahimy

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (260.844 KB) | DOI: 10.35316/jsapi.v13i2.1273

Abstract

Larval health management is a serious problem faced by hatcheries of cantang grouper (E. fuscoguttatus x E. lanceolatus) in order to avoid large financial losses due to larval death. Health Management of cantang grouper larvae includes larval rearing, larval feed management, larval disease control and water quality management. Primary data collection methods are active participation, observation and direct interviews. Secondary data collection by means of literature study. Cantang grouper larvae were reared in the hatchery to control the temperature and condition of the larvae. The ponds were sterilized with 3-5 ppm chlorine in the morning and 3-5 ppm thiosulfate in the afternoon. Then rinsed so that no residual chlorine. Larvae were reared from day 1 to day 45. Larvae were fed from 2 days old with Nannochloropsis occulata. Rotifers were given when the larvae were 2-3 days old with a density of 5 individuals/ml. Artemia was given when the larvae were 18 days old until the age of 40 days. Pellets are given when the larvae are 8-10 days old with a pellet size of level 1. The pellet size continues to increase according to the larval mouth opening until harvest. The disease that attacks the larvae is Viral Nervous Necrosis. The characteristics of larvae infected with VNN are reduced appetite, weak movement, larvae float on the surface and lie on the bottom of the pond. The bacteria that often attack larvae is Vibrio alginolyticus. Vibrio alginolyticus can be treated using drugs from natural ingredients. The temperature in the larval pond is 28-30oC and the salinity is 34-35 ppt. This temperature and salinity are still quite good for grouper larvae to live.