Condition indexes (CIs), according to the equation Organ CI = 100 x [Organ dry weight/Shell dry weight] were used to monitor the variation in the gonad condition index (GCI) and the somatic tissues over time (muscle condition index (MCI), digestive gland condition index (DGCI)), because they describe the breeding cycle and the reserve storage and use cycles over time, respectively.
A decrease was recorded both in the DGCI and MCI at the beginning of the study, probably related to the winter conditions when there is little food in the water and the energy required for metabolic maintenance and gonad development must be supplied by the energy stored in the muscle and digestive gland.
After a decrease in winter, like the DGCI, the MCI increased continuously from January until reaching maximum values at the end of summer.
When the study started in spring, both the MCI and DGCI showed low, decreasing values, because energy was being used either for metabolic maintenance or for fueling the gonad energy requirements.
The peaks had lower values than those recorded in animals kept in suspension culture (compare DGCI, 1.4-1.7 vs.
opercularis, the DGCI decreased from September 9 at 2.5 m, probably in relation to the low chlorophyll a values and to the increase in the GCI that only occurred at this depth.
Tenders are invited for Repair Of Plaster On External Surface in connection with Procurement And Fixing Porta Cabin And Painting Of External Surface Of Office Building Of Dgcis
And S, Em Bye Pass, Kolkata