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Zookeys


Title:Resolving cryptic species complexes of major tephritid pests
Author(s):Hendrichs J; Vera MT; De Meyer M; Clarke AR;
Address:"Insect Pest Control Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Vienna, Austria. Catedra Terapeutica Vegetal, Facultad de Agronomia y Zootecnia (FAZ), Universidad Nacional de Tucuman (UNT), San Miguel de Tucuman; Argentina; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Argentina. Royal Museum for Central Africa, Invertebrates Unit, Leuvensesteenweg 13, B3080 Tervuren, Belgium. School of Earth, Environmental and Biological Sciences, Queensland University of Technology (QUT), GPO Box 2434, Brisbane, QLD 4001, Australia"
Journal Title:Zookeys
Year:2015
Volume:20151126
Issue:540
Page Number:5 - 39
DOI: 10.3897/zookeys.540.9656
ISSN/ISBN:1313-2989 (Print) 1313-2970 (Electronic) 1313-2970 (Linking)
Abstract:"An FAO/IAEA Co-ordinated Research Project (CRP) on 'Resolution of Cryptic Species Complexes of Tephritid Pests to Overcome Constraints to SIT Application and International Trade' was conducted from 2010 to 2015. As captured in the CRP title, the objective was to undertake targeted research into the systematics and diagnostics of taxonomically challenging fruit fly groups of economic importance. The scientific output was the accurate alignment of biological species with taxonomic names; which led to the applied outcome of assisting FAO and IAEA Member States in overcoming technical constraints to the application of the Sterile Insect Technique (SIT) against pest fruit flies and the facilitation of international agricultural trade. Close to 50 researchers from over 20 countries participated in the CRP, using coordinated, multidisciplinary research to address, within an integrative taxonomic framework, cryptic species complexes of major tephritid pests. The following progress was made for the four complexes selected and studied: Anastrepha fraterculus complex - Eight morphotypes and their geographic and ecological distributions in Latin America were defined. The morphotypes can be considered as distinct biological species on the basis of differences in karyotype, sexual incompatibility, post-mating isolation, cuticular hydrocarbon, pheromone, and molecular analyses. Discriminative taxonomic tools using linear and geometric morphometrics of both adult and larval morphology were developed for this complex. Bactrocera dorsalis complex - Based on genetic, cytogenetic, pheromonal, morphometric, and behavioural data, which showed no or only minor variation between the Asian/African pest fruit flies Bactrocera dorsalis, Bactrocera papayae, Bactrocera philippinensis and Bactrocera invadens, the latter three species were synonymized with Bactrocera dorsalis. Of the five target pest taxa studied, only Bactrocera dorsalis and Bactrocera carambolae remain as scientifically valid names. Molecular and pheromone markers are now available to distinguish Bactrocera dorsalis from Bactrocera carambolae. Ceratitis FAR Complex (Ceratitis fasciventris, Ceratitis anonae, Ceratitis rosa) - Morphology, morphometry, genetic, genomic, pheromone, cuticular hydrocarbon, ecology, behaviour, and developmental physiology data provide evidence for the existence of five different entities within this fruit fly complex from the African region. These are currently recognised as Ceratitis anonae, Ceratitis fasciventris (F1 and F2), Ceratitis rosa and a new species related to Ceratitis rosa (R2). The biological limits within Ceratitis fasciventris (i.e. F1 and F2) are not fully resolved. Microsatellites markers and morphological identification tools for the adult males of the five different FAR entities were developed based on male leg structures. Zeugodacus cucurbitae (formerly Bactrocera (Zeugodacus) cucurbitae) - Genetic variability was studied among melon fly populations throughout its geographic range in Africa and the Asia/Pacific region and found to be limited. Cross-mating studies indicated no incompatibility or sexual isolation. Host preference and genetic studies showed no evidence for the existence of host races. It was concluded that the melon fly does not represent a cryptic species complex, neither with regard to geographic distribution nor to host range. Nevertheless, the higher taxonomic classification under which this species had been placed, by the time the CRP was started, was found to be paraphyletic; as a result the subgenus Zeugodacus was elevated to genus level"
Keywords:Anastrepha fraterculus Bactrocera carambolae Bactrocera dorsalis Ceratitis anonae Ceratitis fasciventris Ceratitis rosa Sterile Insect Technique Zeugodacus cucurbitae integrative taxonomy sibling species;
Notes:"PubMed-not-MEDLINEHendrichs, Jorge Vera, M Teresa De Meyer, Marc Clarke, Anthony R eng Bulgaria 2016/01/23 Zookeys. 2015 Nov 26; (540):5-39. doi: 10.3897/zookeys.540.9656. eCollection 2015"

 
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