Contrasting genetic diversity and population structure among three sympatric Madagascan shorebirds

Parallels with rarity, endemism, and dispersal

Luke J. Eberhart-Phillips, Joseph I. Hoffman, Edward G. Brede, Sama Zefania, Martina J. Kamrad, Tamás Székely, Michael W. Bruford

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Understanding the relative contributions of intrinsic and extrinsic factors to population structure and genetic diversity is a central goal of conservation and evolutionary genetics. One way to achieve this is through comparative population genetic analysis of sympatric sister taxa, which allows evaluation of intrinsic factors such as population demography and life history while controlling for phylogenetic relatedness and geography. We used ten conserved microsatellites to explore the population structure and genetic diversity of three sympatric and closely related plover species in southwestern Madagascar: Kittlitz's plover (Charadrius pecuarius), white-fronted plover (C. marginatus), and Madagascar plover (C. thoracicus). Bayesian clustering revealed strong population structure in the rare and endemic Madagascar plover, intermediate population structure in the white-fronted plover, and no detectable population structure in the geographically widespread Kittlitz's plover. In contrast, allelic richness and heterozygosity were highest for the Kittlitz's plover, intermediate for the white-fronted plover and lowest for the Madagascar plover. No evidence was found in support of the "watershed mechanism" proposed to facilitate vicariant divergence of Madagascan lemurs and reptiles, which we attribute to the vagility of birds. However, we found a significant pattern of genetic isolation by distance among populations of the Madagascar plover, but not for the other two species. These findings suggest that interspecific variation in rarity, endemism, and dispersal propensity may influence genetic structure and diversity, even in highly vagile species.

Original languageEnglish
Pages (from-to)997-1010
Number of pages14
JournalEcology & Evolution
Volume5
Issue number5
DOIs
Publication statusPublished - Mar 2015

Fingerprint

wader
rarity
endemism
Madagascar
population structure
indigenous species
genetic variation
population genetics
demography and population
genetic isolation
Charadrius
Lemuridae
interspecific variation
genetic analysis
geography
demography
reptile
relatedness
heterozygosity
genetic structure

Keywords

  • Abundance
  • Dispersal
  • Endemism
  • Gene flow
  • Genetic drift
  • Shorebird

Cite this

Contrasting genetic diversity and population structure among three sympatric Madagascan shorebirds : Parallels with rarity, endemism, and dispersal. / Eberhart-Phillips, Luke J.; Hoffman, Joseph I.; Brede, Edward G.; Zefania, Sama; Kamrad, Martina J.; Székely, Tamás; Bruford, Michael W.

In: Ecology & Evolution, Vol. 5, No. 5, 03.2015, p. 997-1010.

Research output: Contribution to journalArticle

Eberhart-Phillips, Luke J. ; Hoffman, Joseph I. ; Brede, Edward G. ; Zefania, Sama ; Kamrad, Martina J. ; Székely, Tamás ; Bruford, Michael W. / Contrasting genetic diversity and population structure among three sympatric Madagascan shorebirds : Parallels with rarity, endemism, and dispersal. In: Ecology & Evolution. 2015 ; Vol. 5, No. 5. pp. 997-1010.
@article{812a66690a9e4107a533dc7a530eef68,
title = "Contrasting genetic diversity and population structure among three sympatric Madagascan shorebirds: Parallels with rarity, endemism, and dispersal",
abstract = "Understanding the relative contributions of intrinsic and extrinsic factors to population structure and genetic diversity is a central goal of conservation and evolutionary genetics. One way to achieve this is through comparative population genetic analysis of sympatric sister taxa, which allows evaluation of intrinsic factors such as population demography and life history while controlling for phylogenetic relatedness and geography. We used ten conserved microsatellites to explore the population structure and genetic diversity of three sympatric and closely related plover species in southwestern Madagascar: Kittlitz's plover (Charadrius pecuarius), white-fronted plover (C. marginatus), and Madagascar plover (C. thoracicus). Bayesian clustering revealed strong population structure in the rare and endemic Madagascar plover, intermediate population structure in the white-fronted plover, and no detectable population structure in the geographically widespread Kittlitz's plover. In contrast, allelic richness and heterozygosity were highest for the Kittlitz's plover, intermediate for the white-fronted plover and lowest for the Madagascar plover. No evidence was found in support of the {"}watershed mechanism{"} proposed to facilitate vicariant divergence of Madagascan lemurs and reptiles, which we attribute to the vagility of birds. However, we found a significant pattern of genetic isolation by distance among populations of the Madagascar plover, but not for the other two species. These findings suggest that interspecific variation in rarity, endemism, and dispersal propensity may influence genetic structure and diversity, even in highly vagile species.",
keywords = "Abundance, Dispersal, Endemism, Gene flow, Genetic drift, Shorebird",
author = "Eberhart-Phillips, {Luke J.} and Hoffman, {Joseph I.} and Brede, {Edward G.} and Sama Zefania and Kamrad, {Martina J.} and Tam{\'a}s Sz{\'e}kely and Bruford, {Michael W.}",
year = "2015",
month = "3",
doi = "10.1002/ece3.1393",
language = "English",
volume = "5",
pages = "997--1010",
journal = "Ecology & Evolution",
issn = "2045-7758",
publisher = "John Wiley and Sons Inc.",
number = "5",

}

TY - JOUR

T1 - Contrasting genetic diversity and population structure among three sympatric Madagascan shorebirds

T2 - Parallels with rarity, endemism, and dispersal

AU - Eberhart-Phillips, Luke J.

AU - Hoffman, Joseph I.

AU - Brede, Edward G.

AU - Zefania, Sama

AU - Kamrad, Martina J.

AU - Székely, Tamás

AU - Bruford, Michael W.

PY - 2015/3

Y1 - 2015/3

N2 - Understanding the relative contributions of intrinsic and extrinsic factors to population structure and genetic diversity is a central goal of conservation and evolutionary genetics. One way to achieve this is through comparative population genetic analysis of sympatric sister taxa, which allows evaluation of intrinsic factors such as population demography and life history while controlling for phylogenetic relatedness and geography. We used ten conserved microsatellites to explore the population structure and genetic diversity of three sympatric and closely related plover species in southwestern Madagascar: Kittlitz's plover (Charadrius pecuarius), white-fronted plover (C. marginatus), and Madagascar plover (C. thoracicus). Bayesian clustering revealed strong population structure in the rare and endemic Madagascar plover, intermediate population structure in the white-fronted plover, and no detectable population structure in the geographically widespread Kittlitz's plover. In contrast, allelic richness and heterozygosity were highest for the Kittlitz's plover, intermediate for the white-fronted plover and lowest for the Madagascar plover. No evidence was found in support of the "watershed mechanism" proposed to facilitate vicariant divergence of Madagascan lemurs and reptiles, which we attribute to the vagility of birds. However, we found a significant pattern of genetic isolation by distance among populations of the Madagascar plover, but not for the other two species. These findings suggest that interspecific variation in rarity, endemism, and dispersal propensity may influence genetic structure and diversity, even in highly vagile species.

AB - Understanding the relative contributions of intrinsic and extrinsic factors to population structure and genetic diversity is a central goal of conservation and evolutionary genetics. One way to achieve this is through comparative population genetic analysis of sympatric sister taxa, which allows evaluation of intrinsic factors such as population demography and life history while controlling for phylogenetic relatedness and geography. We used ten conserved microsatellites to explore the population structure and genetic diversity of three sympatric and closely related plover species in southwestern Madagascar: Kittlitz's plover (Charadrius pecuarius), white-fronted plover (C. marginatus), and Madagascar plover (C. thoracicus). Bayesian clustering revealed strong population structure in the rare and endemic Madagascar plover, intermediate population structure in the white-fronted plover, and no detectable population structure in the geographically widespread Kittlitz's plover. In contrast, allelic richness and heterozygosity were highest for the Kittlitz's plover, intermediate for the white-fronted plover and lowest for the Madagascar plover. No evidence was found in support of the "watershed mechanism" proposed to facilitate vicariant divergence of Madagascan lemurs and reptiles, which we attribute to the vagility of birds. However, we found a significant pattern of genetic isolation by distance among populations of the Madagascar plover, but not for the other two species. These findings suggest that interspecific variation in rarity, endemism, and dispersal propensity may influence genetic structure and diversity, even in highly vagile species.

KW - Abundance

KW - Dispersal

KW - Endemism

KW - Gene flow

KW - Genetic drift

KW - Shorebird

UR - http://www.scopus.com/inward/record.url?scp=84923842520&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1002/ece3.1393

U2 - 10.1002/ece3.1393

DO - 10.1002/ece3.1393

M3 - Article

VL - 5

SP - 997

EP - 1010

JO - Ecology & Evolution

JF - Ecology & Evolution

SN - 2045-7758

IS - 5

ER -