Seasonal Variation in Growth and Survival of Penaeus monodon Larvae Under Hatchery Conditions
Seasonal Variation in Growth and Survival of Penaeus monodon Larvae Under Hatchery Conditions
Date
2001
Authors
J.P, George
Nair, Deepa
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
The present paper deals with various aquatic abiotic parameters which influence the
spawning, hatching and larval metamorphosis of Penaeus monodon in controlled conditions.
Water temperature, salinity and dissolved oxygen as well as general hygienic conditions were
found to be the critical factors for the successful gonadal hydration, breeding and survival
of young ones of Penaeus spp. Optimum ranges of hydrographic parameters were temperature
28-30oC, salinity 28-33 ppt and dissolved oxygen close to saturation. The larvae were fed
on diatoms (Chaetocews sp.), Artemia cysts and egg custard. The algal culture was maintained
in the hatchery itself under conducive conditions. The hygienic conditions of the hatchery
were maintained by using chemicals such as chlorine, EDTA and formalin. Antibiotics like
oxytetracycline and chloramphenicol were used as prophylactic measures in order to prevent
outbreak of diseases and infections. The present experiments conducted in Maharashtra
revealed that best results in spawning, larval survival and growth could be obtained during
September-October months, when temperature and salinity were in favourable ranges.
Description
Keywords
Water quality, feed management, growth, survival, shrimp fanning, Penaeus monodon, Maharashtra
Citation
Fishery Tech 38(2):106-109