Arid
DOI10.1002/ece3.1500
Testing Taxon Tenacity of Tortoises: evidence for a geographical selection gradient at a secondary contact zone
Edwards, Taylor1,2; Berry, Kristin H.3; Inman, Richard D.4; Esque, Todd C.4; Nussear, Kenneth E.4; Jones, Cristina A.1,5; Culver, Melanie1,6
通讯作者Edwards, Taylor
来源期刊ECOLOGY AND EVOLUTION
ISSN2045-7758
出版年2015
卷号5期号:10页码:2095-2114
英文摘要

We examined a secondary contact zone between two species of desert tortoise, Gopherus agassizii and G.morafkai. The taxa were isolated from a common ancestor during the formation of the Colorado River (4-8mya) and are a classic example of allopatric speciation. However, an anomalous population of G.agassizii comes into secondary contact with G.morafkai east of the Colorado River in the Black Mountains of Arizona and provides an opportunity to examine reinforcement of species’ boundaries under natural conditions. We sampled 234 tortoises representing G.agassizii in California (n=103), G.morafkai in Arizona (n=78), and 53 individuals of undetermined assignment in the contact zone including and surrounding the Black Mountains. We genotyped individuals for 25 STR loci and determined maternal lineage using mtDNA sequence data. We performed multilocus genetic clustering analyses and used multiple statistical methods to detect levels of hybridization. We tested hypotheses about habitat use between G.agassizii and G.morafkai in the region where they co-occur using habitat suitability models. Gopherus agassizii and G.morafkai maintain independent taxonomic identities likely due to ecological niche partitioning, and the maintenance of the hybrid zone is best described by a geographical selection gradient model.


英文关键词Cline Gopherus hybrid zone Mojave Desert secondary contact Sonoran Desert
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000354812500014
WOS关键词EFFECTIVE POPULATION-SIZE ; NORTH-AMERICAN DESERTS ; MITOCHONDRIAL-DNA ; HYBRID ZONE ; MICROSATELLITE LOCI ; GOPHERUS-AGASSIZII ; GENETIC DIVERSITY ; SPOTTED OWLS ; PHYLOGEOGRAPHY ; INTROGRESSION
WOS类目Ecology ; Evolutionary Biology
WOS研究方向Environmental Sciences & Ecology ; Evolutionary Biology
来源机构University of Arizona ; United States Geological Survey
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/186833
作者单位1.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA;
2.Univ Arizona, Genet Core, Tucson, AZ 85721 USA;
3.US Geol Survey, Western Ecol Res Ctr, Riverside, CA 92518 USA;
4.US Geol Survey, Western Ecol Res Ctr, Henderson, NV 89074 USA;
5.Nongame Wildlife Branch, Arizona Game & Fish Dept, Phoenix, AZ 85086 USA;
6.Univ Arizona, US Geol Survey, Arizona Cooperat Fish & Wildlife Res Unit, Tucson, AZ 85721 USA
推荐引用方式
GB/T 7714
Edwards, Taylor,Berry, Kristin H.,Inman, Richard D.,et al. Testing Taxon Tenacity of Tortoises: evidence for a geographical selection gradient at a secondary contact zone[J]. University of Arizona, United States Geological Survey,2015,5(10):2095-2114.
APA Edwards, Taylor.,Berry, Kristin H..,Inman, Richard D..,Esque, Todd C..,Nussear, Kenneth E..,...&Culver, Melanie.(2015).Testing Taxon Tenacity of Tortoises: evidence for a geographical selection gradient at a secondary contact zone.ECOLOGY AND EVOLUTION,5(10),2095-2114.
MLA Edwards, Taylor,et al."Testing Taxon Tenacity of Tortoises: evidence for a geographical selection gradient at a secondary contact zone".ECOLOGY AND EVOLUTION 5.10(2015):2095-2114.
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