Karyotypes of two European species of the genus Lymnaea with disputable taxonomic status (Gastropoda: Pulmonata: Lymnaeidae)

Garbar, А. V., Kornіushіn, А. V. (2002) Karyotypes of two European species of the genus Lymnaea with disputable taxonomic status (Gastropoda: Pulmonata: Lymnaeidae). Malakologische Abhandlungen, 20 (24). с. 235-246.

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Karyotypes of Lymnaea corvus and L. occulta are studied for the first time and compared to the original data on Ukrainian populations of L. palustris and L. stagnalis. While all the studied species have the same diploid chromosome number (2n = 36), they differ in chromosome morphology. Karyotypes of L. occulta and L. palustris include only biarmed chromosomes (number of arms = 72). In contrast, L. corvus and L. stagnalis have also uniarmed (acrocentric) chromosomes (number of arms = 60 and 62, respectively). Karyological data confirm specific distinctness of L. occulta and L. corvus; however, similarity in the chromosome morphology of the latter species to L. stagnalis is probably based on symplesiomorphies and, thus, cannot support phylogenetic relationship suggested earlier on the basis of anatomical characters.

Тип елементу : Стаття
Ключові слова: Pulmonata, Lymnaeidae, Lymnaea, karyotypes, taxonomy, phylogeny, Ukraine.
Теми: Q Наука > QL Зоологія
Підрозділи: Природничий факультет > Кафедра екології та географії
Користувач, що депонує: ekology
Дата внесення: 16 Груд 2014 18:12
Останні зміни: 07 Бер 2016 01:01
URI: http://eprints.zu.edu.ua/id/eprint/6270

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