Polyculture of Tilapia and Shrimp –Philippines and Thailand - 2006

Remedios Bolivar

Yang Yi

Kevin Fitzsimmons26 Feb 2007

Polyculture systems

Tilapia cages in shrimp pond, Thailand

Tilapia cages in shrimp pond, Bacolod, Philippines

Most Thailand work completed earlier

Yang Yi, P. Nadtirom, V. Tansakul and K. Fitzsimmons, 2002. Current status of tilapia - shrimp polyculture in Thailand. In: Proceedings of the 4th National Symposium on Marine Shrimp, BIOTECH, Thailand, pp. 77-92.

Saelee W., Yang Yi, K. Fitzsimmons, 2002. Stocking densities of Nile tilapia in tilapia - shrimp polyculture at low salinity. In: Proceedings of the 4th National Symposium on Marine Shrimp, BIOTECH, Thailand, pp. 93-107.

Becoming most popular fish in the Philippines

Negros Polyculture

Objectives Compare various polyculture methods Determine which are preferred by farmers

Negros Polyculture

Tilapia as biomanipulators in shrimp farming in Negros Island – Green water technique

Tilapia stocked in supply reservoir Increases profitability Reduces disease

Negros Polyculture

Tilapia – Saline tolerant hybrid O. hornorum x niloticus

Tilapia stocked at 15 – 30 g/m3

(10-15 g @ 15,000 -20,000 / ha) Harvested at 300g m3

Induces bloom of green algae (mostly Chlorella) Probiotic effect from skin slime? Bioturbation of substrate Tilapia consume organic wastes

Research Overview

Workplan 10 - Sustainable polyculture of tilapia and shrimp– Involves studies/investigations in Thailand, Mexico, Honduras and

the Philippines– For the study the Philippines, a survey of tilapia-shrimp

polycultures was conducted

Workplan 11 – Sponsorship of ISTA6 on September 12-16, 2004 in Manila, Philippines dubbed as “New Dimensions in Tilapia Farming”– This was a well-attended event where the Philippine government

through the Bureau of Fisheries and Aquatic Resources (BFAR) extended full support to this activity to showcase the country’s progress on tilapia farming.

Workplan 12 - Use of tilapia as biomanipulator in shrimp farming – this involves the analysis of accumulated data by a

cooperative in Negros Island to investigate the cultural management practices of tilapia-shrimp polyculture especially on the control of disease problems like Vibriosis (a disease caused by luminous bacteria Vibrio) and White Spot Syndrome Virus (WSSV) Disease in the farming of Penaeus monodon.

Outreach activity Training of students: Arrangement for the field practice

of three undergraduate senior students in the Visayas (San Carlos City, Negros Occidental and Iloilo) from April to May 2006 was made possible. The culmination of this activity by the students is the making of a poster and a completion of a field practice report to be presented in a defense seminar.

Involvement of the people from the private sector and academe was made possible through this project

Attendance of five students and four project staff at the 5th National Shrimp Congress in Bacolod City, Phillipines – an opportunity especially for the students to establish contact and get experience to attend a national industry conference while finishing their degree