Genetic Diversity and Population Genetic Structure of Triturus vulgaris (Urodela, Salamandridae)

Genic variation in 27 population samples of four subspecies of Triturus vulgaris is analyzed by several statistical methods, including Sokal and Oden's (1978a) spatial autocorrelation method. The average fixation index within populations (F̄IS) is .021 in T vulgaris and .026 in T v vulgaris. Ge...

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Bibliographic Details
Published in:Evolution 1984-03, Vol.38 (2), p.389-401
Main Authors: Kalezic, M. L., Tucic, N.
Format: Article
Language:English
Subjects:
Alleles
Gene frequency
Genetic diversity
Genetic loci
Genetic variation
Newts
Population ecology
Population genetics
Population size
Population structure
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Summary:Genic variation in 27 population samples of four subspecies of Triturus vulgaris is analyzed by several statistical methods, including Sokal and Oden's (1978a) spatial autocorrelation method. The average fixation index within populations (F̄IS) is .021 in T vulgaris and .026 in T v vulgaris. Genetic differentiation is much more pronounced in T vulgaris as whole than in the subspecies T. v. vulgaris (F̄ST= .217 and F̄ST= .096, respectively) and results mainly from large differences in allele frequencies at a few loci. Several possible conditions that may lead to differentiation among smooth newt populations are discussed; these include adult philopatry and homing behavior, influence of different selective regimes and the possibility that populations consist of progeny from only a few matings. Of 17 alleles subjected to spatial autocorrelation analysis, three showed significant departure from random distribution. Possible explanations are proposed for both random and nonrandom spatial patterns.
ISSN:0014-3820
1558-5646
DOI:10.2307/2408497