Acta Entomologica Sinica (1989) 32, 399-405

E.B. Ma and Z. Zheng (1989)
Comparison of karyotypes and chromosomes C-banding patterns in five Oxya species
Acta Entomologica Sinica 32 (4), 399-405
Abstract: The karyotypes and chromosome c-banding patterns of Oxya chinensis, O. shanghaiensis, O. adentata, O. hyla intricata and O. agavisa were investigated. The testes were dissected out from the male adults 6-8 hours after injection with 0.05% colchicine; squashing and BSG method were used in the preparation of slides for microscopical examination. The result showed that these five acrid species had similar karyotypes with male2n=22+X0, including 2 pairs of Iong chromosomes (L_1-2), 6 pairs of medium chromosomes (M_3-8), 3 pairs of small chromosomes (S_9-11), and the single X chromosome. Though the karyotypes display certain conservativeness on the generic level, yet differences appear in the C-banding patterns of the species and the variations are closely related to their morphologies. O. hyla intricata and O. agavisa have their own characteristic patterns which obviously differ from that of the other three species. O. chinenesis, O. shanghaiensis and O. adentata have rather similar patterns in the main marked chromosomes, but there are still a few differences in the detailed C-banding structure. Based on this observation discussion is made on the classification of these acrid species and the specific variations of the chromosomes and chiasma localization in the meiotic metaphase 1 on statistical basis.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): En-Bo Ma

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Oxya chinensis
	Oxya hyla
	Oxya agavisa