Karyological data and meiosis of Drassyllus praeficus (L. Koch, 1866) (Gnaphosidae) and Thanatus imbecillus (L. Koch, 1878) (Philodromidae) from Turkey

Authors : Zübeyde KUMBIÇAK, Ayla KARATAŞ, Ümit KUMBIÇAK, Osman SEYYAR

Pages : 200-204

Doi:10.3906/sag-1209-60

View : 23 | Download : 7

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this study, karyotypic and cytogenetic characteristics of Drassyllus praeficus insert ignore into journalissuearticles values(L. Koch, 1866); and Thanatus imbecillus insert ignore into journalissuearticles values(L. Koch, 1878); were investigated for the first time by examining mitotic and meiotic chromosomes obtained from gonad cells. The number and the sex chromosome system of D. praeficus and T. imbecillus males was 2n = 22 insert ignore into journalissuearticles values(X1X20); and 2n = 28 insert ignore into journalissuearticles values(X1X20);, respectively. D. praeficus had 10 autosomal bivalents and 2 univalent sex chromosomes, and T. imbecillus had 13 autosomal bivalents and 2 univalent sex chromosomes during the first meiotic prophase and metaphase. Both species possessed acrocentric chromosomes in their karyotypes.
Keywords : chromosomes, sex chromosome system, Araneae, Karyotype