Phylogeny of the Scathophagidae (Diptera, Calyptratae) Based on Mitochondrial DNA Sequences

Authors: Bernasconi M.V.^{1, 2}; Pawlowski J.³; Valsangiacomo C.²; Piffaretti J-C.²; Ward P.I.¹

Source: Molecular Phylogenetics and Evolution, Volume 16, Number 2, August 2000 , pp. 308-315(8)

Publisher: Academic Press

Abstract:

The family Scathophagidae constitutes, together with members of the families Muscidae, Fannidae, and Anthomyiidae, the Muscoidea superfamily. The species Scathophaga stercoraria has been used extensively to investigate questions in animal ecology and evolution, particularly as a model system for studies of sperm competition and life history evolution. However, no phylogenetic studies have ever been performed on the Scathophagidae and the relationships within this family remain unclear. This study represents a molecular approach aimed at uncovering the phylogenetic relationships among 61 species representing 22 genera of Scathophagidae. A fragment of the terminal region of the mitochondrial gene COI (subunit I of the cytochrome oxidase gene) was sequenced in scathophagid species covering a wide geographic area, as well as a diverse spectrum of ecological habitats. Several clades grouping different genera and species have been identified, but the resolution power of the COI was insufficient to establish the exact relationships between these clades. The molecular data confirm the existence of a group consisting of the genera Delina, Chylizosoma, and Americina, which could represent the subfamily Delinae. Concerning the controversial position of the genus Phrosia, our data clearly suggest that it should be removed from the Delinae and placed within the genus Cordilura. Monophyly of most genera was confirmed, except for the genus Scathophaga, which should be divided into several different taxa. Copyright 2000 Academic Press.

Keywords: mitochondrial DNA; cytochrome c oxidase subunit I; Scathophagidae; phylogeny

Language: English

Document Type: Research article

Affiliations: 1: Abt. Oekologie, Zoologisches Museum der Universität, Winterthurerstrasse 190, Zurich, CH-8057, Switzerland 2: Istituto Cantonale Batteriosierologico, Via Ospedale 6, Lugano, CH-6904, Switzerland 3: Département de Zoologie et Biologie Animale, Université de Genève, 154, route de Malagnou, Chêne-Bougeries, 1224, Switzerland

Publication date: 2000-08-01

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• By this author: Bernasconi M.V. ;  Pawlowski J. ;  Valsangiacomo C. ;  Piffaretti J-C. ;  Ward P.I.

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