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Citation for Study 916

Citation title: "Lifecycle closure, lineage sorting and hybridization revealed in a phylogenetic analysis of European oak gallwasps (Hymenoptera: Cynipidae: Cynipini) using mitochondrial sequence data.".

This study was previously identified under the legacy study ID S793 (Status: Published).

Citation

Rokas A., Melika G., Abe Y., Nieves-aldrey J., Cook J., & Stone G. 2003. Lifecycle closure, lineage sorting and hybridization revealed in a phylogenetic analysis of European oak gallwasps (Hymenoptera: Cynipidae: Cynipini) using mitochondrial sequence data. Molecular Phylogenetics and Evolution, 26(1): 36-45.

Authors

• Rokas A.
• Melika G.
• Abe Y.
• Nieves-aldrey J.
• Cook J.
• Stone G.

Abstract

Oak gallwasps are cyclically parthenogenetic insects that induce a wide diversity of highly complex species- and generation-specific galls on oaks and other Fagaceae. Phylogenetic relationships within oak gallwasps remain to be established, while sexual and parthenogenetic generations of many species remain unpaired. Previous work on oak gallwasps has revealed substantial intra-specific variation, particularly between regions known to represent discrete Pleistocene glacial refuges. Here we use statistical phylogenetic inference methods on sequence data for a fragment of the mitochondrial cytochrome b gene to reconstruct the relationships among 62 oak gallwasp species. For 16 of these we also include 23 additional cytochrome b haplotype sequences from different Pleistocene refuge areas to test the effect of intra-specific variation on inter-specific phylogeny reconstruction. The reconstructed phylogenies show good intra-generic resolution and identify several conserved clades, but fail to reconstruct either very recent or very ancient divergences. Nine of the 16 species represented by multiple haplotypes are not monophyletic. The apparent discordance between the recovered gene tree and the current taxonomic classification can be explained through (a) collapsing of some species currently known only from either a sexual or a parthenogenetic generation into a single cyclically parthenogenetic entity; (b) sorting of ancestral polymorphism in diverging lineages, and (c) horizontal transfer of haplotypes, perhaps due to hybridization within glacial refuges. Our conclusions emphasise the need for careful intra-specific sampling when reconstructing phylogenies for radiations of closely related species and imply that for certain taxonomic groups full phylogenetic resolution (using molecular markers) may not be attainable.

Keywords

Gallwasp; Cynipidae; Cynipini; Lineage sorting; Lifecycle; Likelihood; Bayesian inference; Cytochrome b; Hybridization; Insect systematics

External links

• DOI: 10.1016/S1055-7903(02)00329-9

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S916
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref17250,
  	 author = {Antonis  Rokas and George  Melika and Yoshihisa  Abe and Jose-Luis  Nieves-Aldrey and James M.  Cook and Graham N.  Stone},
  	 title = {Lifecycle closure, lineage sorting and hybridization revealed in a phylogenetic analysis of European oak gallwasps (Hymenoptera: Cynipidae: Cynipini) using mitochondrial sequence data.},
  	 year = {2003},
  	 keywords = {Gallwasp; Cynipidae; Cynipini; Lineage sorting; Lifecycle; Likelihood; Bayesian inference; Cytochrome b; Hybridization; Insect systematics},
  	 doi = {10.1016/S1055-7903(02)00329-9},
  	 url = {},
  	 pmid = {},
  	 journal = {Molecular Phylogenetics and Evolution},
  	 volume = {26},
  	 number = {1},
  	 pages = {36--45},
  	 abstract = {Oak gallwasps are cyclically parthenogenetic insects that induce a wide diversity of highly complex species- and generation-specific galls on oaks and other Fagaceae. Phylogenetic relationships within oak gallwasps remain to be established, while sexual and parthenogenetic generations of many species remain unpaired. Previous work on oak gallwasps has revealed substantial intra-specific variation, particularly between regions known to represent discrete Pleistocene glacial refuges. Here we use statistical phylogenetic inference methods on sequence data for a fragment of the mitochondrial cytochrome b gene to reconstruct the relationships among 62 oak gallwasp species. For 16 of these we also include 23 additional cytochrome b haplotype sequences from different Pleistocene refuge areas to test the effect of intra-specific variation on inter-specific phylogeny reconstruction. The reconstructed phylogenies show good intra-generic resolution and identify several conserved clades, but fail to reconstruct either very recent or very ancient divergences. Nine of the 16 species represented by multiple haplotypes are not monophyletic. The apparent discordance between the recovered gene tree and the current taxonomic classification can be explained through (a) collapsing of some species currently known only from either a sexual or a parthenogenetic generation into a single cyclically parthenogenetic entity; (b) sorting of ancestral polymorphism in diverging lineages, and (c) horizontal transfer of haplotypes, perhaps due to hybridization within glacial refuges. Our conclusions emphasise the need for careful intra-specific sampling when reconstructing phylogenies for radiations of closely related species and imply that for certain taxonomic groups full phylogenetic resolution (using molecular markers) may not be attainable.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 17250
  AU  - Rokas,Antonis 
  AU  - Melika,George 
  AU  - Abe,Yoshihisa 
  AU  - Nieves-Aldrey,Jose-Luis 
  AU  - Cook,James M. 
  AU  - Stone,Graham N. 
  T1  - Lifecycle closure, lineage sorting and hybridization revealed in a phylogenetic analysis of European oak gallwasps (Hymenoptera: Cynipidae: Cynipini) using mitochondrial sequence data.
  PY  - 2003
  KW  - Gallwasp; Cynipidae; Cynipini; Lineage sorting; Lifecycle; Likelihood; Bayesian inference; Cytochrome b; Hybridization; Insect systematics
  UR  - http://dx.doi.org/10.1016/S1055-7903(02)00329-9
  N2  - Oak gallwasps are cyclically parthenogenetic insects that induce a wide diversity of highly complex species- and generation-specific galls on oaks and other Fagaceae. Phylogenetic relationships within oak gallwasps remain to be established, while sexual and parthenogenetic generations of many species remain unpaired. Previous work on oak gallwasps has revealed substantial intra-specific variation, particularly between regions known to represent discrete Pleistocene glacial refuges. Here we use statistical phylogenetic inference methods on sequence data for a fragment of the mitochondrial cytochrome b gene to reconstruct the relationships among 62 oak gallwasp species. For 16 of these we also include 23 additional cytochrome b haplotype sequences from different Pleistocene refuge areas to test the effect of intra-specific variation on inter-specific phylogeny reconstruction. The reconstructed phylogenies show good intra-generic resolution and identify several conserved clades, but fail to reconstruct either very recent or very ancient divergences. Nine of the 16 species represented by multiple haplotypes are not monophyletic. The apparent discordance between the recovered gene tree and the current taxonomic classification can be explained through (a) collapsing of some species currently known only from either a sexual or a parthenogenetic generation into a single cyclically parthenogenetic entity; (b) sorting of ancestral polymorphism in diverging lineages, and (c) horizontal transfer of haplotypes, perhaps due to hybridization within glacial refuges. Our conclusions emphasise the need for careful intra-specific sampling when reconstructing phylogenies for radiations of closely related species and imply that for certain taxonomic groups full phylogenetic resolution (using molecular markers) may not be attainable.
  L3  - 10.1016/S1055-7903(02)00329-9
  JF  - Molecular Phylogenetics and Evolution
  VL  - 26
  IS  - 1
  SP  - 36
  EP  - 45
  ER  -