title: [Morphology and biology of 2 ecotypes of Chaetogaster lymnaei, Baer, 1827].
abstract: Chaetogaster lymnaei (Oligochaeta, Naididae) has two life forms one of which is a commensal of pulmonae mollusks and the other--an endoparasite of Radix ovata Kidney. On the basis of statistical analysis of the second body segment chaetae morphological differences of the two races are considered. Their geographical distribution and biological peculiarities are discussed. The races of Gh. lymnaei represent two divergating sympatrical ecotypes rather than biological species as it was thought before.
mesh_terms: D000818:Animals; D000845:Annelida / Q000033:anatomy & histology*; D004463:Ecology; D008974:Mollusca / Q000469:parasitology; D009835:Oligochaeta / Q000033:anatomy & histology* / Q000469:parasitology; D014586:USSR
vernacular_title: O morfologii i biologii dvukh ékotipov Chaetogaster lymnaei, Baer, 1827