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. 2015 Jun;40(1):16-27.
doi: 10.1111/jvec.12128.

Phylogeny of anopheline (Diptera: Culicidae) species in southern Africa, based on nuclear and mitochondrial genes

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Phylogeny of anopheline (Diptera: Culicidae) species in southern Africa, based on nuclear and mitochondrial genes

Laura C Norris et al. J Vector Ecol. 2015 Jun.

Abstract

A phylogeny of anthropophilic and zoophilic anopheline mosquito species was constructed, using the nuclear internal transcribed spacer 2 (ITS2) and mitochondrial cytochrome oxidase subunit I (COI) genes. The ITS2 alignment, typically difficult due to its noncoding nature and large size variations, was aided by using predicted secondary structure, making this phylogenetically useful gene more amenable to investigation. This phylogeny is unique in explicitly including zoophilic, non-vector anopheline species in order to illustrate their relationships to malaria vectors. Two new, cryptic species, Anopheles funestus-like and Anopheles rivulorum-like, were found to be present in Zambia for the first time. Sequences from the D3 region of the 28S rDNA suggest that the Zambian An. funestus-like may be a hybrid or geographical variant of An. funestus-like, previously reported in Malawi. This is the first report of An. rivulorum-like sympatric with An. rivulorum (Leeson), suggesting that these are separate species rather than geographic variants.

Keywords: Anopheles; COI; ITS2; Zambia; phylogeny.

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Figures

Figure 1
Figure 1
Cytochrome oxidase sub unit I (COI) Neighbor-Joining tree, branch length = 0.75231908.
Figure 2
Figure 2
Cytochrome oxidase subunit I (COI) Maximum Parsimony tree, one of 12 most parsimonious trees that differed in the arrangement of the Funestus Group clade.
Figure 3
Figure 3
Internal transcribed spacer 2 (ITS2) Neighbor-Joining tree, branch length = 5.06003986.
Figure 4
Figure 4
Internal transcribed spacer 2 (ITS2) Maximum Parsimony tree, one of three most parsimonious trees that difered in the arrangement of the An. gambiae clade.
Figure 5
Figure 5
Variable section of Domain 3 of 28S for Malawi An. funestus-like, Zambian An. funestus-like, and An. funestus s.s.

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