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JOURNAL OF FISHERIES AND ENVIRONMENT


Volume 43, No. 02, Month MAY, Year 2019, Pages 1 - 13


Assessment of tilapia cage farming practices in relation to the occurrence of fish mortalities along the fish cage belt at magat reservoir, philippines

Francis Nuestro Baleta, Jonathan Mallillin Bolanos, William Catli Medrano


Abstract Download PDF

The present study was conducted in Magat Reservoir, Philippines, to determine the profile and practices of tilapia cage farmers in relation to the occurrence of fish mortality. Eight stations were established: Station 1 (Baligatan), Station 2 (Namnama), Station 3 (Halag 1), Station 4 (Halag 2), Station 5 (Halag 3), Station 6 (Taliktik), Station 7 (Dallaw) and Station 8 (Isla Berde). A total of 80 households were interviewed from December 2016 to May 2017. Results showed that most incidents of fish mortality in cages occurred during the summer season (March to June). Farmers perceived the primary causes of fish mortality in Magat Reservoir to include fluctuating temperature (91.25%), water quality (83.75%), pollution and predation by birds (each 76.25%), parasite infestation (56.25%) and diseases (50%). Reduced feeding, isolation of the infected fish and proper stocking are the major activities conducted by the fish farmers to prevent the occurrence of fish mortality at Magat Reservoir.


Keywords

Fish cage culture, Fish mortality, Magat Reservoir, Tilapia



JOURNAL OF FISHERIES AND ENVIRONMENT


Published by : Faculty of Fisheries, Kasetsart University
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