Journal ArticleDOI
Genetics of larvae and spat growth rate in the oyster Crassostrea virginica
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TLDR
The heritability of oyster larval growth rate and spat growth rate were found to be highly correlated and suggest that a selection program for faster growing larvae and spat would be successful.Abstract:
The heritability of oyster (Crassostrea virginica) larval growth rate was estimated to be in the range of 0.25 to 0.50 and a significant part of this genetic variation is of the additive type. Larval growth rate and spat growth rate were found to be highly correlated. These results suggest that a selection program for faster growing larvae and spat would be successful.read more
Citations
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Journal ArticleDOI
Natural selection and the heritability of fitness components
TL;DR: It is found that the heritability of morphological traits is significantly lower for ectotherms than it is for endotherms which may in part be a result of the strong correlation between life history and body size for many ectotherm.
Journal ArticleDOI
Genetic variation in quantitative traits and selective breeding in fish and shellfish
TL;DR: The possibilities for improvement through selection are particularly good for growth rate and age at maturation, because of large genetic variance and because high fecundity makes strong selection possible.
Journal ArticleDOI
Settlement requirements of molluscan larvae: New data on chemical and genetic roles
TL;DR: Both age at metamorphic competence and concentration of natural inducer necessary to elicit metamorphosis in competent larvae of Phestilla are known to show wide variance among larvae, and it may be that a single model will not be appropriate for all marine molluscs.
Journal ArticleDOI
The genetic basis of life-history characters in a polychaete exhibiting planktotrophy and lecithotrophy.
TL;DR: It is hypothesized that the developmental traits have evolved in allopatry and have only recently come into contact in North Carolina, and supports other empirical studies and theoretical predictions that nonadditive components of variance will increase in importance in individual traits that are most closely tied to fitness.
Journal ArticleDOI
Selection response and realized heritability for growth in three stocks of the Pacific oyster Crassostrea gigas
TL;DR: The relatively high realized heritability estimate obtained for stock C and stock J indicates that there is genetic variation in the two stocks and that selective breeding by mass selection is very promising.
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Book
Sex and evolution.
TL;DR: The relationship between various types of reproduction and the evolutionary process is explored, including the evolutionary development of diverse forms of sexuality, such as anisogamy, hermaphroditism, and the evolution of differences between males and females in reproductive strategy.