Cryptic divergent lineages of Pultenaea pauciflora M.B. Scott (Fabacaea:Mirbelieae) exhibit different evolutionary history

MA Millar, M Byrne

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14 Citations (Scopus)

Abstract

Genetic structure among disjunct population groups of Pultenaea pauciflora was assessed to determine the evolutionary history of this species as a basis for conservation management strategies. Analysis of individuals from all extant populations using 1737 amplified length polymorphism markers revealed two highly divergent genetic entities with strong geographical structuring. Populations located at Narrogin and Brookton clustered together in Bayesian assignment analysis with every individual optimally placed in a single cluster with complete membership. Genetic differentiation between populations in these two areas was very low. Populations at Boddington were highly divergent from those located at Narrogin and Brookton. All individuals from Boddington populations were optimally placed into a second cluster with complete membership. Populations located at Boddington maintain lower levels of allelic diversity, yet greater levels of mean heterozygosity than populations located at Narrogin and Brookton. The degree of genetic differentiation and different patterns of genetic diversity strongly suggest historical divergence and separate evolutionary influences on the two lineages that occur in different ecological habitat. These Evolutionary Significant Units are likely to represent two cryptic sister taxa in the extant populations currently recognized as P.pauciflora, and the reassessment of taxonomic and conservation status of both lineages is required.(c) 2013 State of Western Australia. Biological Journal of the Linnean Society (c) 2013 The Linnean Society of London
Original languageEnglish
Pages (from-to)871-881
Number of pages11
JournalBiological Journal of the Linnaean Society
Volume108
DOIs
Publication statusPublished - Apr 2013
Externally publishedYes

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Pultenaea
history
genetic variation
Bayesian theory
Western Australia
heterozygosity

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title = "Cryptic divergent lineages of Pultenaea pauciflora M.B. Scott (Fabacaea:Mirbelieae) exhibit different evolutionary history",
abstract = "Genetic structure among disjunct population groups of Pultenaea pauciflora was assessed to determine the evolutionary history of this species as a basis for conservation management strategies. Analysis of individuals from all extant populations using 1737 amplified length polymorphism markers revealed two highly divergent genetic entities with strong geographical structuring. Populations located at Narrogin and Brookton clustered together in Bayesian assignment analysis with every individual optimally placed in a single cluster with complete membership. Genetic differentiation between populations in these two areas was very low. Populations at Boddington were highly divergent from those located at Narrogin and Brookton. All individuals from Boddington populations were optimally placed into a second cluster with complete membership. Populations located at Boddington maintain lower levels of allelic diversity, yet greater levels of mean heterozygosity than populations located at Narrogin and Brookton. The degree of genetic differentiation and different patterns of genetic diversity strongly suggest historical divergence and separate evolutionary influences on the two lineages that occur in different ecological habitat. These Evolutionary Significant Units are likely to represent two cryptic sister taxa in the extant populations currently recognized as P.pauciflora, and the reassessment of taxonomic and conservation status of both lineages is required.(c) 2013 State of Western Australia. Biological Journal of the Linnean Society (c) 2013 The Linnean Society of London",
keywords = "conservation genetics; cryptic species; conservation units; evolutionary significant units; fragmentation; genetic diversity",
author = "MA Millar and M Byrne",
year = "2013",
month = "4",
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language = "English",
volume = "108",
pages = "871--881",
journal = "Biological Journal of the Linnaean Society",
issn = "0024-4066",
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TY - JOUR

T1 - Cryptic divergent lineages of Pultenaea pauciflora M.B. Scott (Fabacaea:Mirbelieae) exhibit different evolutionary history

AU - Millar, MA

AU - Byrne, M

PY - 2013/4

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N2 - Genetic structure among disjunct population groups of Pultenaea pauciflora was assessed to determine the evolutionary history of this species as a basis for conservation management strategies. Analysis of individuals from all extant populations using 1737 amplified length polymorphism markers revealed two highly divergent genetic entities with strong geographical structuring. Populations located at Narrogin and Brookton clustered together in Bayesian assignment analysis with every individual optimally placed in a single cluster with complete membership. Genetic differentiation between populations in these two areas was very low. Populations at Boddington were highly divergent from those located at Narrogin and Brookton. All individuals from Boddington populations were optimally placed into a second cluster with complete membership. Populations located at Boddington maintain lower levels of allelic diversity, yet greater levels of mean heterozygosity than populations located at Narrogin and Brookton. The degree of genetic differentiation and different patterns of genetic diversity strongly suggest historical divergence and separate evolutionary influences on the two lineages that occur in different ecological habitat. These Evolutionary Significant Units are likely to represent two cryptic sister taxa in the extant populations currently recognized as P.pauciflora, and the reassessment of taxonomic and conservation status of both lineages is required.(c) 2013 State of Western Australia. Biological Journal of the Linnean Society (c) 2013 The Linnean Society of London

AB - Genetic structure among disjunct population groups of Pultenaea pauciflora was assessed to determine the evolutionary history of this species as a basis for conservation management strategies. Analysis of individuals from all extant populations using 1737 amplified length polymorphism markers revealed two highly divergent genetic entities with strong geographical structuring. Populations located at Narrogin and Brookton clustered together in Bayesian assignment analysis with every individual optimally placed in a single cluster with complete membership. Genetic differentiation between populations in these two areas was very low. Populations at Boddington were highly divergent from those located at Narrogin and Brookton. All individuals from Boddington populations were optimally placed into a second cluster with complete membership. Populations located at Boddington maintain lower levels of allelic diversity, yet greater levels of mean heterozygosity than populations located at Narrogin and Brookton. The degree of genetic differentiation and different patterns of genetic diversity strongly suggest historical divergence and separate evolutionary influences on the two lineages that occur in different ecological habitat. These Evolutionary Significant Units are likely to represent two cryptic sister taxa in the extant populations currently recognized as P.pauciflora, and the reassessment of taxonomic and conservation status of both lineages is required.(c) 2013 State of Western Australia. Biological Journal of the Linnean Society (c) 2013 The Linnean Society of London

KW - conservation genetics; cryptic species; conservation units; evolutionary significant units; fragmentation; genetic diversity

U2 - 10.1111/bij.12002

DO - 10.1111/bij.12002

M3 - Article

VL - 108

SP - 871

EP - 881

JO - Biological Journal of the Linnaean Society

JF - Biological Journal of the Linnaean Society

SN - 0024-4066

ER -