title: [Adaptations of the genital system of Metastrongylus elongatus in relation to the conditions of postembyonic development].
abstract: A topography of the genital system of Metastrongylus elongatus is described in comparison with the genital system of Dictyocaulus viviparus. It is established that in these species of helminths the genital tubes have a similar location but in Metastrongylus elongatus takes place an uterus lenthening caused by the transference of the genital orifice to the hind end of the body. Its total length is 2.5 as long as the body length of the worm. This phenomenon is regarded as an adaptation providing this species a possibility to produce eggs which can for a long time exist in the environment.
mesh_terms: D000220:Adaptation, Biological; D000818:Animals; D004021:Dictyocaulus / Q000033:anatomy & histology; D005260:Female; D005836:Genitalia, Female / Q000254:growth & development*; D007814:Larva / Q000033:anatomy & histology; D008681:Metastrongyloidea / Q000033:anatomy & histology*; D009865:Oocytes / Q000166:cytology; D010053:Ovary / Q000033:anatomy & histology; D013552:Swine / Q000469:parasitology; D014599:Uterus / Q000033:anatomy & histology
vernacular_title: Adaptatsii polovoĭ sistemy Metastrongylus elongatus v sviazi s usloviiami postémbrional'nogo razvitiia