Abstract：
:Birgus latro (coconut crab) is an edible crustacean that has experienced serious overharvesting throughout its whole habitat range; however, the negative effects of overharvesting on the genetic diversity within B. latro populations have not been elucidated. Here, we report sex ratio, body size, and genetic diversity in populations of B. latro in the Ryukyu Islands where large-male-biased overharvesting of B. latro has continued. In 2 of the study populations, the sex ratio was significantly skewed toward females, and in all of the study populations large males were rare, which we attributed to sex- and size-biased overharvesting. We found no differences in genetic diversity between small and large individuals, suggesting that genetic diversity, even among the large (i.e., old) individuals, may have had already been negatively affected by overharvesting. Continued monitoring of sex ratio, body size and genetic diversity are needed for effective management of the study populations.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Yorisue T,Iguchi A,Yasuda N,Yoshioka Y,Sato T,Fujita Ydoi
10.1038/s41598-020-66712-4subject
Has Abstractpub_date
2020-06-22 00:00:00pages
10026issue
1issn
2045-2322pii
10.1038/s41598-020-66712-4journal_volume
10pub_type
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