Automatic Manipulation System for Mass Propagation and Chromosome Manipulation of the Small Abalone,Haliotis Diversicolor: Preliminary Results
Journal
臺灣水產學會刊
Journal Volume
30
Journal Issue
1
Pages
15-28
Date Issued
2003
Author(s)
Abstract
The density at which a fish species can be stocked is an important factor in determiningthe economic viability of a production system in intensive aquaculture.Producingfishes of more-or-less uniform size in the process is one of the primary goals of aquaculture,as well as maximizing production efficiency.In this study,common carp fry were stockedat the densities of 0.2,0.4,0.8,1.6,3.2 and 6.4 fry/l for an experimental period of 10 weeksto examine the effects of stocking densities on growth,survival,production,and sizevariation of the fish within aquariums.The standard length,length-weight relationship,percent survival,relative production,and size variation were found to be significantlyaffected by stocking density.At the end of the experiment,a negative relationshipbetween the logarithms of length and the logarithms of stocking density was found.Thepercent survivals at all stocking densities ranged between 44.5 % at the stocking density of6.4 fry/l and 100% at the stocking density of 0.8 fry/l and less.At the higher densities,percent survival and experimental periods were anti-logistically related.In addition to thelength,a negative relationship was found between the logarithms of relative production andthe logarithms of stocking density.The highest size variations is presented at the medianstocking density,1.6 fry/l.
Type
journal article