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A review of humpback whales' migration patterns worldwide and their consequences to gene flow
Rizzo, L.Y.; Schulte, D. (2009). A review of humpback whales' migration patterns worldwide and their consequences to gene flow. J. Mar. Biol. Ass. U.K. 89(5): 995-1002. dx.doi.org/10.1017/S0025315409000332
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

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Keywords
    Gene flow; Migrations; Megaptera novaeangliae (Borowski, 1781) [WoRMS]; Marine

Authors  Top 
  • Rizzo, L.Y.
  • Schulte, D.

Abstract
    Humpback whales (Megaptera novaeangliae) have a worldwide distribution in the oceans and are known for their very long migratory potential. Their migration routes consist of productive feeding areas located in high-latitudes and to low-latitude areas used as breeding and calving grounds. Genetic studies in humpback whale populations consist mainly of nuclear and mitochondrial DNA. In general, these studies provide similar results to estimates of gene flow, but some discrepancies may be caused by gender-biased migration to breeding grounds and further dispersion by males. There is little evidence of trans-equatorial and inter-oceanic migrations, but those movements have been confirmed by both analysis of photo-ID of naturally marked individuals and also genetic analysis. The combination of migratory and genetic analyses suggest an overlapping of breeding grounds in low-latitude areas, where the gene flow among those oceanic populations is more likely to happen, despite the opposite seasons in the northern and southern hemispheres. These results have important implications in the conservation perspective, especially for the determination of protected areas and for development of international agreements.

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