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      Transgenerational marking of embryonic otoliths in marine fishes using barium stable isotopes

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      Canadian Journal of Fisheries and Aquatic Sciences
      Canadian Science Publishing

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          Coral reef fish larvae settle close to home.

          Population connectivity through larval dispersal is an essential parameter in models of marine population dynamics and the optimal size and spacing of marine reserves. However, there are remarkably few direct estimates of larval dispersal for marine organisms, and the actual birth sites of successful recruits have never been located. Here, we solve the mystery of the natal origin of clownfish (Amphiprion polymnus) juveniles by mass-marking via tetracycline immersion all larvae produced in a population. In addition, we established parentage by DNA genotyping all potential adults and all new recruits arriving in the population. Although no individuals settled into the same anemone as their parents, many settled remarkably close to home. Even though this species has a 9-12 day larval duration, one-third of settled juveniles had returned to a 2 hectare natal area, with many settling <100 m from their birth site. This represents the smallest scale of dispersal known for any marine fish species with a pelagic larval phase. The degree of local retention indicates that marine reserves can provide recruitment benefits not only beyond but also within their boundaries.
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            Self-recruitment in a coral reef fish population

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              Otoliths, increments, and elements: keys to a comprehensive understanding of fish populations?

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                Author and article information

                Journal
                Canadian Journal of Fisheries and Aquatic Sciences
                Can. J. Fish. Aquat. Sci.
                Canadian Science Publishing
                0706-652X
                1205-7533
                June 2006
                June 2006
                : 63
                : 6
                : 1193-1197
                Article
                10.1139/f06-048
                22d55a78-6954-4126-bafb-648d0214566d
                © 2006

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