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Karyotype and reproductive traits of the unique symbiotic mealybug Orbuspedum machinator G.-Z. (Homoptera, Coccinea)
Comparative Cytogenetics ( IF 1 ) Pub Date : 2023-12-18 , DOI: 10.3897/compcytogen.17.116550
Ilya A. Gavrilov-Zimin

 The karyotype and reproductive features of Orbuspedum machinator Gavrilov-Zimin, 2017 (Pseudococcidae) were studied for the first time. Diploid chromosome number is 18 in females. Reproduction is probably bisexual, as indicated by the presence of characteristic Lecanoid heterochromatinization of the paternal set of chromosomes in embryonic cells of about 50% of the embryos studied. The female reproductive system has a pair of lateral oviducts merged into enlarged common oviduct; the spermatheca and accessory glands are connected to the common oviduct in its proximal part. Complete ovoviviparity occurs in ontogenesis.

中文翻译:

独特的共生粉虱 Orbuspedum machinator G.-Z 的核型和繁殖特征。 (同翅目、瓢虫目)

 首次对Orbuspedum machinator Gavrilov-Zimin, 2017(拟球虫科)的核型和繁殖特征进行了研究。女性二倍体染色体数目为18。生殖可能是双性的,约 50% 的研究胚胎的胚胎细胞中父本染色体组存在特征性 Lecanoid 异染色质化,表明这一点。女性生殖系统有一对侧输卵管合并成扩大的总输卵管;受精囊和附属腺在其近端部分与总输卵管相连。完全卵胎生发生在个体发生中。
更新日期:2023-12-18
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