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Ultrastructural Morphology of the Male and Female Genital Tracts of Psoroptes spp. (Acari: Astigmata: Psoroptidae)

2005; Springer Science+Business Media; Volume: 36; Issue: 4 Linguagem: Inglês

10.1007/s10493-005-6076-8

1572-9702

M. Lekimme, M. Leclercq-Smekens, Chantal Devignon, T. Leclipteux, Yves Poumay, Bertrand Losson,

Research on scale insects

The structure of the male and female genital systems of the astigmatid mite Psoroptes ovis (Hering) is described. The male genital system is composed of a paired testis, fused at its proximal part, two vasa deferentia, an ejaculatory duct, into which a single accessory gland opens, and a copulatory organ. The testis is characterized by a peripheric syncytial cell surrounding spermatogonia, spermatocytes, spermatids and spermatozoa which are distributed regularly in the gonad according to the sequence of spermatogenesis. The female genital system consists of a copulatory pore (the bursa copulatrix), a seminal receptacle, paired ovaries and oviducts, a glandular uterus and an ovipositor which leads to the oviporus. Ovaries are composed of somatic cells, germ cells and a central cell, with a multilobular nucleus, connected to oocytes by a stalk. Similarities with other astigmatic mites belonging to Psoroptidia and Acaridia are also discussed.