Approximate Bayesian computation reveals the factors that influence genetic diversity and population structure of foxsnakes

被引：17

作者：

Row, J. R. ^{[1
]}

Brooks, R. J. ^{[2
]}

MacKinnon, C. A. ^{[2
]}

Lawson, A. ^{[2
]}

Crother, B. I. ^{[3
]}

White, M. ^{[3
]}

Lougheed, S. C. ^{[1
]}

机构：

[1] Queens Univ, Dept Biol, Kingston, ON K7L 3N6, Canada

[2] Univ Guelph, Dept Zool, Guelph, ON N1G 2W1, Canada

[3] SE Louisiana Univ, Dept Biol, Univ Biol, Hammond, LA 70402 USA

来源：

JOURNAL OF EVOLUTIONARY BIOLOGY | 2011年 / 24卷 / 11期

基金：

加拿大自然科学与工程研究理事会;

关键词：

assignment test; cytochrome b; glaciation; microsatellites; North America; phylogeography; population genetics; reptile; simulations; STATISTICAL EVALUATION; COLONIZATION HISTORY; MICROSATELLITE LOCI; PHYLOGEOGRAPHY; INFERENCE; MODEL; FLOW; PROGRAM; RANGE; BIOGEOGRAPHY;

D O I：

10.1111/j.1420-9101.2011.02362.x

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Contemporary geographical range and patterns of genetic diversity within species reflect complex interactions between multiple factors acting across spatial and temporal scales, and it is notoriously difficult to disentangle causation. Here, we quantify patterns of genetic diversity and genetic population structure using mitochondrial DNA sequences (101 individuals, cytochrome b) and microsatellites (816 individuals, 12 loci) and use Approximate Bayesian computation methods to test competing models of the demographic history of eastern and western foxsnakes. Our analyses indicate that post-glacial colonization and past population declines, probably caused by the infilling of deciduous forest and cooler temperatures since the mid-Holocene, largely underpin large-scale genetic patterns for foxsnakes. At finer geographical scales, our results point to more recent anthropogenic habitat loss as having accentuated genetic population structure by causing further declines and fragmentation.

引用

页码：2364 / 2377

页数：14

共 78 条

[11]

[12] The Confounding Effects of Population Structure, Genetic Diversity and the Sampling Scheme on the Detection and Quantification of Population Size Changes [J].