Sex chromosome systems of European noterid beetles (Coleoptera, Adephaga: Noteridae)

in Insect Systematics & Evolution
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Abstract

The karyotypes and sex chromosome systems of the four European species of noterid beetles are described. Chromosome preparations were made from the mid-gut and testes of adult beetles by acetic acid spreading. Canthydrus diophthalmus was found to have a chromosome compliment of 2n = 16 + XX/XY. A multiple sex chromosome system was common to the three species of Noterus investigated (2n = 18 + X1X1X2X2/X1X2Y). The behaviour of Noterus sex chromosomes during early meiosis was examined and is discussed, along with the occurrence of multiple sex chromosome systems in other Adephaga.

Sex chromosome systems of European noterid beetles (Coleoptera, Adephaga: Noteridae)

in Insect Systematics & Evolution

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