Open AccessLARGE‐SCALE, COMMERCIAL APPLICATION OF PENAEID SHRIMP MATURATION TECHNOLOGY
Author(s) -
Simon Clyde M.
Publication year - 1982
Publication title -
journal of the world mariculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0735-0147
DOI - 10.1111/j.1749-7345.1982.tb00040.x
Subject(s) - biology , hatchery , penaeus monodon , hatching , broodstock , fishery , shrimp , brood , zoology , photoperiodism , ecology , aquaculture , fish <actinopterygii> , botany
A maturation facility was designed and constructed to provide spawners for the year‐round hatchery operations at a minimum output of 5 million P 10 postlarvae per month. Maturation is carried out in 3.65‐m diameter tanks stocked with 70–75 brood‐stock shrimp of reproductive size at a 1:1 sex ratio. Females are unilaterally ablated. Tank interiors are black; no substrate is used. Filtered seawater at 28–32 ppt salinity, 27–31°C temperature is continuously exchanged at a rate of 100–250% per day. Only artificial light is available. Photoperiod is 14 hours light, 10 hours dark daily. Penaeus monodon brood stock are obtained from the wild and from ponds operated specifically for the rearing of brood stock. Diet in the maturation tanks consists mainly of squid and clams. Spawning histories of individual females are not monitored; the operational unit is the maturation tank, of which 18 were available. Productivity is monitored and evaluated in terms of percent hatch, total numher of nauplii and percent survival to the first protozoeal substage. Eggs with an average hatching rate of 62% are being obtained daily resulting in a yield of 0.4‐1.0 million viable nauplii per day. Details of the design of the facilities and of the methods and operating procedures developed are given, and production results are discussed.