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Estimating ancestral geographical distributions: a Gondwanan origin for aphid parasitoids?


ABSTRACT: We tested the published hypothesis of a Gondwanan origin for the overwhelmingly northern hemisphere aphid parasitoids (Aphidiinae) as follows: (i) finding their sister group by a phylogenetic analysis of the entire Braconidae (Insecta: Hymenopterai using sequence data from approximately 500 bp fragments of both the nuclear 28S (D2 region) and mitochondrial 16S rDNA genes, (ii) using this sister-group relationship and the more informative 28S D2 gene to estimate the phylogeny of the Aphidiinae and (iii) estimating the ancestral distribution for the Aphidiinae using maximum-likelihood and maximum-parsimony methods. Both methods indicated a Gondwanan origin.

SUBMITTER: Belshaw R 

PROVIDER: S-EPMC1690548 | biostudies-literature | 2000 Mar

REPOSITORIES: biostudies-literature

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Estimating ancestral geographical distributions: a Gondwanan origin for aphid parasitoids?

Belshaw R R   Dowton M M   Quicke D L DL   Austin A D AD  

Proceedings. Biological sciences 20000301 1442


We tested the published hypothesis of a Gondwanan origin for the overwhelmingly northern hemisphere aphid parasitoids (Aphidiinae) as follows: (i) finding their sister group by a phylogenetic analysis of the entire Braconidae (Insecta: Hymenopterai using sequence data from approximately 500 bp fragments of both the nuclear 28S (D2 region) and mitochondrial 16S rDNA genes, (ii) using this sister-group relationship and the more informative 28S D2 gene to estimate the phylogeny of the Aphidiinae an  ...[more]

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