MORPHOLOGICAL AND ALLOZYMIC POLYMORPHISM AND DIFFERENCES AMONG LOCAL-POPULATIONS IN BRADYBAENA-FRUTICUM (MULLER,O.F., 1777) (GASTROPODA, STYLOMMATOPHORA, HELOCOIDEA)

Citation
A. Falniowski et al., MORPHOLOGICAL AND ALLOZYMIC POLYMORPHISM AND DIFFERENCES AMONG LOCAL-POPULATIONS IN BRADYBAENA-FRUTICUM (MULLER,O.F., 1777) (GASTROPODA, STYLOMMATOPHORA, HELOCOIDEA), Malacologia, 35(2), 1993, pp. 371-388
Citations number
74
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Zoology
Journal title
ISSN journal
0076-2997
Volume
35
Issue
2
Year of publication
1993
Pages
371 - 388
Database
ISI
SICI code
0076-2997(1993)35:2<371:MAAPAD>2.0.ZU;2-E
Abstract
Morphological variation (shell colour and banding, mantle pigmentation , colour and pigmentation of reproductive organs, external form of the mucous gland) and allozymic polymorphism at 13 loci (by means of vert ical slab polyacrylamide gel electrophoresis) were studied in Bradybae na fruticum (O. F. Muller, 1777) from 11 localities in southern Poland and Slovakia. Descriptions and illustrations of variation in all the morphological characters, and frequencies at every locality are given. Of the 13 loci studied, six were polymorphic. The proportion of polym orphic loci (15.5-46.1%, mean 36%) was relatively low for a morphologi cally polymorphic species. Heterozygote frequencies were as expected f rom Hardy-Weinberg equilibrium, with the exception of the CAP(1) locus , at which a significant heterozygote excess was found. The values of Nei's distances between populations (0.017-0.282) were relatively high for geographically close conspecific populations, and often a higher Value of genetic distance did not correspond with a greater geographic distance. For morphological characters and for allozyme frequencies ( directly and after computing Cavalli-Sforza and Edwards's are distance s) similarity trees were computed for all populations by means of the maximum likelihood and additive tree techniques.