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By D.W. Sims

Advances in Marine Biology was once first released in 1963. Now edited through David W. Sims (Marine organic organization, UK), the serial publishes in-depth and up to date experiences on a variety of themes with a purpose to entice postgraduates and researchers in marine biology, fisheries technology, ecology, zoology, oceanography. Eclectic volumes within the sequence are supplemented by means of thematic volumes on such issues as The Biology of Calanoid Copepods and Restocking and inventory Enhancement of Marine Invertebrate Fisheries . * New info at the offspring dimension in marine invertebrates * Discusses very important info at the social constitution and methods of delphinids * greater than 250 pages of the newest discoveries in marine technology

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Data taken from Kupriyanova et al. (2001), note the log scale. Developmental time is defined here as the time from egg release/fertilization through to metamorphic competence. planktonic period, whereas for other groups there appears to be little support for the idea that larvae from smaller eggs require longer time to develop. This may be because the influence of egg size on the pre-feeding period is actually much larger than has previously been assumed, potentially balancing out (or perhaps even overcoming in the case of polychaetes) the effects of egg size on the length of the feeding period.

Thus, if we ignore optima based on unfeasibly small offspring, in a constant environment, we should expect a single optimum size. , 2001; Parker and Begon, 1986; Sakai and Harada, 2001). For example, Sakai and Harada (2001) predict that if larger mothers can provision their offspring more efficiently than smaller mothers, then maternal size and offspring size should be correlated. Further, in species of fish where the maternal phenotype has the potential to affect the offspring size–fitness relationship, offspring-size variation within populations is higher (Einum and Fleming, 2004a).

Initial studies suggest that disturbance as a source of post-settlement mortality acts in a size-independent manner. As described above, colony survival was unrelated to initial larval size in Florida due to storms causing high mortality of B. neritina colonies throughout the adult stage. In a study on the encrusting bryozoan Watersipora subtorquata, we found that colony survival was dependent on initial larval size for colonies on settlement plates but was independent of larval size for colonies on pier pilings among natural communities (Marshall and Keough, 2004a).

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