Title

COMPARATIVE ANALYSES OF EFFECTIVE POPULATION SIZE WITHIN AND AMONG SPECIES: RANID FROGS AS A CASE STUDY

Authors

Authors

I. C. Phillipsen; W. C. Funk; E. A. Hoffman; K. J. Monsen;M. S. Blouin

Comments

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Abbreviated Journal Title

Evolution

Keywords

amphibians; population genetics; genetic diversity; Ranidae; conservation genetics; NORTHERN LEOPARD FROG; SOUTHWESTERN BRITISH-COLUMBIA; LONG-TOED; SALAMANDER; GENETIC-STRUCTURE; LINKAGE DISEQUILIBRIUM; SPOTTED FROG; LANDSCAPE GENETICS; PRETIOSA-PRETIOSA; AURORA-AURORA; DIVERSITY; Ecology; Evolutionary Biology; Genetics & Heredity

Abstract

It has recently become practicable to estimate the effective sizes (N-e) of multiple populations within species. Such efforts are valuable for estimating N-e in evolutionary modeling and conservation planning. We used microsatellite loci to estimate N-e of 90 populations of four ranid frog species (20-26 populations per species, mean n per population = 29). Our objectives were to determine typical values of N-e for populations of each species, compare N-e estimates among the species, and test for correlations between several geographic variables and N-e within species. We used single-sample linkage disequilibrium (LD), approximate Bayesian computation (ABC), and sibship assignment (SA) methods to estimate contemporary N-e for each population. Three of the species-Rana pretiosa, R. luteiventris, and R. cascadae-have consistently small effective population sizes (< 50). N-e in Lithobates pipiens spans a wider range, with some values in the hundreds or thousands. There is a strong east-to-west trend of decreasing N-e in L. pipiens. The smaller effective sizes of western populations of this species may be related to habitat fragmentation and population bottlenecking.

Journal Title

Evolution

Volume

65

Issue/Number

10

Publication Date

1-1-2011

Document Type

Article

Language

English

First Page

2927

Last Page

2945

WOS Identifier

WOS:000295521600019

ISSN

0014-3820

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