PENYEBAB PENURUNAN PRODUKSI IKAN BILIH (Mystacoleucus padangensis BLEEKER) DI DANAU SINGKARAK

IKHSAN, ROMA (2010) PENYEBAB PENURUNAN PRODUKSI IKAN BILIH (Mystacoleucus padangensis BLEEKER) DI DANAU SINGKARAK. Working Paper. Pascasarjana Unand. (Unpublished)

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Abstract

Yield of ikan bilih caught by fisherman in Danau Singkarak has been deceased considerably. It is estimated that is caused by population density of ikan bilih has decreased. The objectives of the rearsearch are: (1) to study the catching pattern of ikan bilih done by fisherman that may couse decreasing of ikan bilih production in Danau Singkarak, (2) to understand water quality that may influence to lowering ikan bilih production. The result of the research can conclude that (1) the catching pattern of ikan bilih done by fisherman could recude ield of ikan bilih in Danau Singkarak, there are considerable number of cathing tools especially web or mesh to catch ikan bilih with mesh size 0,75 inch, and hight catching frecuency. It was also found thet some fishemen caught ikanbilih in their mating (fertilization) areas or habitat using wide net and natural poison called derris, (2) water quality in Danau Singkarak did not cause recuding yield production of ikan bilih. Key word: over fishing, mesh size, recruitment, and size distribution.

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