https://doi.org/10.1186/1471-2148-5-19">
 

Document Type

Article

Abstract

Background

Yellowfin and skipjack tuna are globally distributed in the world's tropical and sub-tropical oceans. Since little, if any, migration of these fishes occurs between the Atlantic and Indo-Pacific Oceans, one might expect to see genetic differences between sub-populations in these ocean basins. However, yellowfin and skipjack tuna have extremely large population sizes. Thus, the rate of genetic drift should be slower than that observed for other tunas.

Results

Low levels of genetic differentiation were observed between Atlantic and Pacific samples of yellowfin tuna. In contrast, no genetic differentiation was observed between Atlantic and Pacific samples of skipjack tuna.

Conclusion

Much lower levels of genetic differentiation were found among sub-populations of yellowfin tuna compared to those observed for other large tunas, probably due to the large population size of yellowfin tuna. Since skipjack tuna appear to have even larger population sizes, it is not surprising that no genetic differentiation was detected between Atlantic and Pacific samples of these fish.

Digital Object Identifier (DOI)

https://doi.org/10.1186/1471-2148-5-19

APA Citation

Ely, B., Viñas, J., Alvarado Bremer, J., Black, D., Lucas, L., & Covello, K. et al. (2005). BMC Evolutionary Biology, 5(1), 19. https://doi.org/10.1186/1471-2148-5-19

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