Swimming in the deep end of the gene pool: global population structure of an oceanic giant

Corey Bradshaw

    Research output: Contribution to journalComment/debate

    Abstract

    Despite the impression held by some that few biological mysteries remain, even evocative species such as humpback whales (Megaptera novaeangliae), white sharks (Carcharodon carcharias) and green turtles (Chelonia mydas) have poorly documented movement patterns, reproductive strategies and population dynamics despite years of dedicated research. This is largely due to the difficulty of observing wide-ranging marine species over the majority of their life cycle. The advent of powerful tracking devices has certainly improved our understanding, but it is usually only with molecular tools that the nature of population structure becomes apparent. In this issue of Molecular Ecology, Castro and colleagues have provided the first global-scale assessment of population structure for the largest fish — whale sharks (Rhincodon typus). Whale sharks can reach lengths > 12 m and are a popular tourist attraction at places where they aggregate, yet for most of their life cycle, we know little indeed of where they go and how they interact with other populations. Previous tracking studies imply a high dispersal capacity, but only now have Castro and colleagues demonstrated high gene flow and haplotype diversity among the major ocean basins where they are found.
    Original languageEnglish
    Pages (from-to)5111-5113
    Number of pages3
    JournalMolecular Ecology
    Volume16
    Issue number24
    DOIs
    Publication statusPublished - 2007

    Fingerprint

    Dive into the research topics of 'Swimming in the deep end of the gene pool: global population structure of an oceanic giant'. Together they form a unique fingerprint.

    Cite this