en.Wedoany.com Reported - The Peruvian Amazon Research Institute (IIAP) has successfully bred gamitana fry during the dry season, overcoming the limitation that this species only spawns naturally during the rainy season. So far this year, IIAP has transferred over 342,000 gamitana fry to local farmers, providing off-season supply for the Amazon aquaculture industry in the Loreto region and promoting regional economic development.
Gamitana (Colossoma macropomum) spawning typically depends on the flood season, the period from November to April each year when the Amazon River's flow increases. IIAP researchers achieved dry-season breeding through specialized management, with core techniques including genetic selection, balanced feed, temperature control, and hormone induction. The research team first selected larger, more resilient broodstock and kept them in artificial ponds with special care. These selected broodstock received a balanced diet rich in fishmeal protein to strengthen their biological development and maintain spawning conditions. Hormone induction is one of the key steps—researchers administered hormones to female broodstock via injection to stimulate ovulation, with a few females capable of producing hundreds of thousands of eggs, ensuring continuous fry production. Additionally, temperature control during the dry season is crucial, as researchers continuously monitor water quality to avoid drastic changes caused by Amazon cold snaps, with stable warm temperatures creating favorable conditions for fish reproduction.
This technology not only ensures a year-round supply of high-quality protein but can also be replicated in different regions and applied to other Amazon species such as paco (Piaractus brachypomus), promoting more sustainable and competitive aquaculture models.
This article is compiled by Wedoany. All AI citations must indicate the source as "Wedoany". If there is any infringement or other issues, please notify us promptly, and we will modify or delete it accordingly. Email: news@wedoany.com
