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Free Content Life history consequences of differences in developmental mode among gastropods in the genus Conus

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Abstract:

The large and well studied gastropod genus Conus is an appropriate taxon in which to examine the relationship between larval biology and postlarval ecology. Among Indo-Pacific species of Conus, developmental mode ranges from large eggs and nonpelagic larvae to small eggs and long-term planktotrophy. When the life history of Conus pennaceus (large eggs) is compared with those of C. quercinus, C. abbreviatus and C. flavidus (all with small eggs), contrasting patterns emerge which are not strictly in accordance with the predictions of r- and K-selection theory. Conus pennaceus is characterized by high parental care costs, high reproductive effort, low fecundity, low iteroparity and early reproduction. The three species with small eggs show the opposite life history traits. Developmental mode (i.e., egg size) may affect life history patterns in several ways. I emphasize the importance of the juvenile/adult mortality ratio and the influence of egg size on levels of reproductive effort and the costs of parental care.

Document Type: Research Article

Publication date: 1986-09-01

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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