Molecular phylogeny of the Drosophila tripunctata and closely related species groups (Diptera: Drosophilidae)

Abstract

We suggest a new phylogenetic hypothesis for the tripunctata radiation based on sequences of mitochondrial genes. Phylogenetic trees were reconstructed by parsimony, maximum likelihood and Bayesian methods. We performed tests for hypotheses of monophyly for taxonomic groups and other specific hypotheses. Results reject the monophyly for the tripunctata group whereas monophyly is not rejected for the tripunctata radiation and other specific groups within the radiation. Although most of the basal nodes were unresolved we were able to identify four clusters within the tripunctata radiation. These results suggest the collection of additional data before a proper taxonomic revision could be proposed.

Phylogenetic relationships and macro-evolutionary patterns within the Drosophila tripunctata “radiation” (Diptera: Drosophilidae)

“…Our TET recovered the immigrans group as the immigrans-tripunctata clade early offshoot (PP = 1.00) in agreement with previous studies (Hatadani et al 2009;Remsen and O'Grady 2002;Robe et al 2005Robe et al , 2010Yotoko et al 2003). The clade encompassing the funebris and quinaria sister groups (PP = 1.00) was the next to branch off, leaving a monophyletic and derived tripunctata ''radiation'' (PP = 1.00).…”

“…For illustrative purposes, we named each of these according to the earlier described species imbedded within each of them: the basal tripunctata lineage (PP = 1.00), the sister cardini (PP = 0.67) and mediostriata (PP = 1.00) lineages. It is particularly striking that the previously reported paraphyletic tripunctata group (Hatadani et al 2009;Robe et al 2005;Yotoko et al 2003) was recovered here as a diphyletic assemblage, with one of its lineages (tripunctata) being paraphyletic in relation to the pallidipennis group, and the other (mediostriata) being paraphyletic to the guaramunu and calloptera groups.…”

“…2). Monophyly of the tripunctata ''radiation'' was previously reported by DaLage et al (2007), Hatadani et al (2009), Robe et al (2005, 2010. Nevertheless, Remsen and O'Grady (2002) and Yotoko et al (2003) concluded that it was a paraphyletic taxon (in relation to the funebris, pinicola, quinaria and testaceae species groups in the first study, but only to funebris and testacea in the second).…”

“…Subsequent studies supported the scenario first envisioned by Throckmorton (1975) of an immigranstripunctata clade closely related to other genera in Drosophilidae (DaLage et al 2007; Kwiatowski and Ayala 1999;Robe et al 2005;Robe et al 2010;Tatarenkov et al 2001; van der Linde and Houle 2008), although its phylogenetic affinity to the Hirtodrosophila genus was not so thoroughly recovered (Remsen and O'Grady 2002;Robe et al 2010). Furthermore, the different phylogenetic hypotheses suggested for the immigrans-tripunctata clade usually involve topologically intermingling of many of its groups and subgroups (Hatadani et al 2009;Robe et al 2005Robe et al , 2010Yotoko et al 2003), with most agreement concerning ''brushy'' phylogenies, with deep nodes and/or Electronic supplementary material The online version of this article (doi:10.1007/s10709-010-9453-0) contains supplementary material, which is available to authorized users. poor resolution.…”

Unexpected long-term changes in chromosome inversion frequencies in a Neotropical Drosophila species

“…This is the second largest Drosophila group from the Neotropical region, comprising 79 species (Yotoko et al 2003, Hatadani et al 2009, Bächli 2011.…”