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This study investigated the genetic variation and genotype–environment interaction (GEI) in the early growth stage among seven full‐sib families of the sea urchin Strongylocentrotus intermedius. From each of the seven families, 180 or 270 sea urchins of the same size were exposed to three laboratory environments (E1, E2 and E3). These environments were commonly used in breeding programs for S. intermedius...
The present study is the first estimate for the sea urchin, Strongylocentrotus intermedius, of genetic parameters for growth and gonad traits during the entire reproductive period. 2165–5764 sea urchins were sampled from 74 to 120 families at six different growth stages. Six hundred individuals were sampled from 20 randomly chosen families at harvest. Coefficients of variation for most growth and...
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