In:
Journal of the World Aquaculture Society, Wiley, Vol. 50, No. 5 ( 2019-10), p. 969-982
Abstract:
To investigate the effects of family, stocking density, and their interaction on mortality, growth rate, and size dispersal in the sea urchin Strongylocentrotus intermedius , 1,440 juveniles from six full‐sib families were exposed to three stocking densities, that is, low stocking density (LD), middle stocking density (MD), and high stocking density (HD), and reared for 10 months in sea‐based suspended cages. The results demonstrated significant family effects on cumulative mortality rate (CMR); specific growth rate for test diameter (SGR for TD); specific growth rate for body weight (SGR for BW); coefficient of variation for body weight at the 10th month (CV for BW 10 ); and significant stocking density effects on SGR for TD, SGR for BW, and CV for BW 10 . Statistically significant family by stocking density interaction was only found in SGR for TD. A certain degree of family‐ranking inversions occurred in SGR for TD. The present study provides evidence for the existence of family by stocking density interaction on the growth rate of test diameter in the family selection for S. intermedius . More attention should be paid to this interaction effect to select correct parents in S. intermedius .
Type of Medium:
Online Resource
ISSN:
0893-8849
,
1749-7345
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2233509-2
SSG:
21,3
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