Considering the swarming biodiversity at the equator, and the lack of diversity near the poles, scientists have long assumed that species evolve more rapidly in warm waters.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/species-evolve-more-twice-fast-poles-tropics-study
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/mongabay
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biodiversity
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fish
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fish-biodiversity
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/scientists
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/arctic
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/antarctica