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pubmed:abstractText |
In the Anopheles gambiae complex, paracentric chromosomal inversions are non-randomly distributed along the complement: 18/31 (58%) of common polymorphic inversions are on chromosome arm 2R, which represents only approximately 30% of the complement. Moreover, in An. gambiae sensu stricto, 6/7 common polymorphic inversions occur on 2R. Most of these inversions are considered markers of ecological adaptation that increase the fitness of the carriers of alternative karyotypes in contrasting habitats. However, little is known about the evolutionary forces responsible for their origin and subsequent establishment in field populations.
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pubmed:affiliation |
Sezione di Parassitologia, Dipartimento di Scienze di Sanità Pubblica, Università di Roma Sapienza, P. Aldo Moro 5, 00185 Roma, Italy. marco.pombi@uniroma1.it
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