Effects of polymorphic Robertsonian rearrangements on the frequency and distribution of chiasmata in the water-hyacinth grasshopper, Cornops aquaticum (Orthoptera: Acrididae)

From: European Journal of Entomology | Date: January 1, 2007| Author: Colombo, Pablo C | Copyright information

Key words. Acrididae, Cornops aquaticum, Robertsonian polymorphisms, recombination, chiasma interference, chiasma distribution

Abstract. The New World grasshopper Cornops aquaticum (Leptysminae: Acrididae) shows a geographical pattern for three Robertsonian polymorphisms in its southernmost area of distribution in Argentina and Uruguay. The frequency and distribution of chiasmata were analysed in five Argentinian populations. This study reveals a strong redistribution of chiasmata in f...

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