Open AccessEffects of Size and Age of Juvenile Freshwater Prawns Macrobrachium rosenbergii at Stocking on Population Structure and Production in Polyculture Ponds
Author(s) -
Hulata Gideon,
Karplus Ilan,
Wohlfarth Giora W.,
Halevy Amir
Publication year - 1990
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.1990.tb00542.x
Subject(s) - polyculture , biology , stocking , macrobrachium rosenbergii , juvenile , fishery , zoology , tilapia , population , aquaculture , ecology , fish <actinopterygii> , prawn , demography , sociology
Effects of size and age of juvenile freshwater prawns on their growth in polyculture ponds were investigated. Post‐larvae were nursed at two commercial nurseries, during either 66 or 129 days, to final mean weights of about 0.25 and 0.5 g, for each age group. Nursed prawns were stocked in ponds at a density of 2/m 2 and polycultured with carps and tilapias for 148 days. No significant effect of age or size, or their interaction, was detected in mean harvest weight and gross income, although small age effect was noted in survival and total yield.