The Biology and Culture of Tilapias

Table 4. Extensive commercial cage culture of S. mossambicus in Philippine lakes.

Location Stocking data Harvesting data Culture

conditions; Fioating cage Mean weight NO. 05 Biomys Mean weight Biomy ProducYon period

source data (g) Mlm (kg/m ) (B) (kg/m ) (kg/m ) (mo) Remarks

Laguna de Bay^20 x^10 x 2 m deep;
900 km2; 2-8 min depth: mm mesh
salinity up to 3-5 ppt
hypereutrophic in the
summer
Sollows (pers. comm.)

Lake Sampaloc 500 m2 x 4 m deep

volcanic crater lake

Sollows (pers. comm.)

Lake Bunot 50x 25x 5mdeep

volcanic soil region

Garcia 1979 and

Guerrero 1979

before congestion due

to uncontrolled increase

of cage numbers

under congested condi-

tions

occasional supplemen-

tal feeding with rice

bran and water hyacinth

yield 10-1 5 tonslcage

giving net income eq.

USS3.378