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Karyotype, C- and G-band Patterns and DNA content of Callimenus (=Bradyporus) macrogaster macrogaster

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Author(s): ?ifa Türko?lu | Serdar Koca

Journal: Journal of Insect Science
ISSN 1536-2442

Volume: 2;
Start page: 24;
Date: 2002;
Original page

Keywords: Callimenus (=Bradyporus) macrogaster macrogaster | Orthoptera | cricket | chromosomes | karyotype | C- and G- banding | DNA content

ABSTRACT
Chromosomes and detailed karyotype information (the number, shape, relative length, arm ratio, centromeric index) of Callimenus (=Bradyporus) macrogaster macrogaster Lef. (Orthoptera: Tettigonioidea, Bradyporini) of Turkey belonging to the subfamily Bradyporinae are described. The diploid number of chromosomes was found to be 2n male symbol= 23, with 2 metacentric pairs, 2 submetacentric pairs, 6 acrocentric pairs. The X chromosome is metacentric. This species has a XX female symbol/ X0 male symbolsex determining mechanism. The basic karyotype is complemented by a description of C- and G-banding patterns. The C-banding pattern in spermatogonial metaphase was characterized by the presence of paracentromeric C-bands in all chromosomes, and a distal C-band in chromosome 5. The G-banding pattern was complex. The 2C nuclear DNA content was found to be 10.26 plus or minus0.16 picograms by microspectrophotometry.
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