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1 February 2012 C-Banding Karyotypes of Two Caryanda (Orthoptera: Catantopidae) Species with Short Wings from China
Liu Qing, Ou Xiaohong, Ge Hongjie
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Abstract

Chromosome C-band karyotypes, heterochromatin content and chromosome chiasma during meiotic prophase of two short-winged locust species Caryanda cultricerca and Caryanda amplexicerca (Orthoptera, Catantopidae) were studied. Results indicated that both species had a diploid chromosome number of 2n (♂) = 23 and a XO sex-determining mechanism. All chromosomes were telocentric except the S9 of C. cultricerca. The autosomes can be classified into large, medium and short groups. In C. cultricerca there were 19 C-bands while C. cultricerca had 16 C-bands; both species had an approximately equal value in the total of heterochromatic content (21.91% vs. 21.58%). As for the chromosome behavior in meiosis, 1 chiasmata and 2 chiasmata types occurred most frequently in both species during meiotic prophase. Moreover, the differences in chromosome karyotype, characteristics of sex-chromosome and their significance in adaptation and differentiation of these two species are discussed.

Liu Qing, Ou Xiaohong, and Ge Hongjie "C-Banding Karyotypes of Two Caryanda (Orthoptera: Catantopidae) Species with Short Wings from China," Entomological News 122(1), 1-9, (1 February 2012). https://doi.org/10.3157/021.122.0101
Received: 17 October 2010; Accepted: 31 January 2011; Published: 1 February 2012
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KEYWORDS
Caryanda amplexicerca
Caryanda cultricerca
C-banding karyotype
chiasma
Chromosome
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