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Thursday, June 16, 2016

16/06/2016: Larval culture of pangasius in Puerto Rico

https://issuu.com/international_aquafeed/docs/iaf1603_w1/28
by Michael V McGee, PhD, Caribe Fisheries Inc, Lajas, Puerto Rico

First published in International Aquafeed, May-June 2016


The Asian catfish Pangasius, Pangasianodon hypophthalmus is recognised as a leading aquaculture food fish on world markets.

The commercial culture of Pangasius was developed in the mid 1990s in Viet Nam and quickly expanded to production levels of nearly one million tons per year. Other countries including Thailand, Cambodia, Myanmar, Indonesia, Philippines, Bangladesh and India have adapted Pangasius as part of their aquaculture production.

Pangasius can be successfully cultured in most tropical regions of the world however countries in the Western Hemisphere have been slow to embrace Pangasius aquaculture, in part, due to the lack of practical knowledge of the species food requirements during the larval and fry stages. Pangasius are a riverine species and require specific environmental conditions under which to reproduce naturally.

All Pangasius reared in aquaculture are reproduced by hormone inductions. The eggs and milt are stripped from the fish and artificially propagated under hatchery conditions.

At a temperature of 28 C Pangasius eggs hatch in about 24 hours and the larvae become free swimming almost immediately afterwards. The larvae are small (3 mm) and require further development for at least 48 to 60 hours prior to first feeding. Pangasius larvae are pelagic, swimming through the water column and normally feeding on small zooplankton that they randomly encounter.

Read the full article in International Aquafeed HERE.    


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