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Evolutionary dynamics of a B chromosome invasion in island populations of the grasshopper Eyprepocnemis plorans

AuthorsRiera, L.; Petitpierre, Eduard ; Juan, Carlos; Cabrero, Josefa; Camacho, Juan Pedro M.
KeywordsChiasma frequency
Inducible recombination
B chromosome
Issue Date2004
PublisherBlackwell Publishing
CitationJournal of Evolutionary Biology 17(3): 716-719 (2004)
AbstractFour natural populations of the grasshopper Eyprepocnemis plorans in the Mallorca island were analysed for several years revealing the recent invasion of the B1 chromosome from the south-west part of the island (Palma region) towards the north and to the east. In only 10 years, the mean number of Bs in the northern population at Pollença increased from 0.053 to 0.692. Therefore, B chromosome invasion seems to be very rapid and has recently arrived to the north of the island. The south-west (dose to Palma) is the most likely point at which B invasion started in the Mallorca Island. Finally, the number of B chromosomes was significantly associated to an increase in chiasma frequency (and thus recombination) in A chromosomes.
Identifiersdoi: 10.1111/j.1420-9101.2004.00696.x
issn: 1010-061X
Appears in Collections:(IMEDEA) Artículos
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