Molecular evidence for a species complex in the genus Aphelinus (Hymenoptera: Aphelinidae), with additional data on Aphidiine phylogeny (Hymenoptera: Braconidae).
Authors:
Chen, Y. Giles, K.L. Greenstone, M.H. USDA, ARS
Source:
Annals of the Entomological Society of America. Jan 2002. v. 95 (1), p. 29-34.
NALT Subjects:
Aphelinus Braconidae mitochondrial DNA ribosomal DNA nucleotide sequences chemotaxonomy phylogeny speciation
Other Subjects:
16s ribosomal dna sequence divergence aphidiinae
Issue Date:
Jan-2002
Abstract:
Mitochondrial 16s rDNA was sequenced from nine different populations of Aphelinidae and 10 of aphidiinae. Sequence divergences between populations within a species are low, ranging from 0 to 0.38%. Divergences among species within the same genus range from 0 to 8.71%. Aphelinus asychis Walker has a sequence divergence from the other Aphelinus spp. of 8.71%, which is even higher than the divergences among the aphidiine genera Lysiphlebus, Aphidius and Diaeretiella. Our 16s rDNA phylogeny for aphidiines is concordant with a previously published NADH1 dehydrogenase phylogeny. Our analysis identifies a complex comprising A. albipodus (Hayat & Fatima), A. varipes (Foerster), and A. hordei (Kurdjumov). The sequence divergences within this complex are low, ranging from 0 to 0.38% with an average of 0.19%, which suggests that the three species within the A. varipes complex diverged within the last approximately equal to 90,000 yr.
