Landscape genetics approach to study Anastrepha fraterculus populations.

PAULIN, L.; GOMEZ CENDRA, P.; JURI, M; LANZAVECCHIA, S.B.; VERA ,M. T.; CLADERA J.; J.C. VILARDI

San Miguel de Tucuman

Workshop; 3RD FAO/IAEA RESEARCH CO-ORDINATION MEETING ON RESOLUTION OF CRYPTIC SPECIES COMPLEXES OF TEPHRITID PESTS TO OVERCOME CONSTRAINTS TO SIT APPLICATION AND INTERNATIONAL TRADE; 2013

FAO/IAEA

In Landscape refers to all physical and biological features of the environment, including natural and man induced factors. Landscape genetics is the combination between lanscape ecology and molecular population genetics, and it is interested in the interaction between landscape features and microevolutionary processes (gene flow, genetic drift and selection). Landscape genetics is an approach that can help to resolve complex taxonomic problems in the complex of cryptic species included under the latin name Anastrepha fraterculus because this method does not require that discrete populations be identified in advance, emphasizes the processes and patterns of gene flow and local adaptation, and detects genetic discontinuities and the correlation of these discontinuities with landscape features. Recent application of this approach allowed to detect genetic differences among samples of A. fraterculus collected from different host in the area of Hoco Molle, Tucuman Province, Argentina. Current morphometric studies seem to confirm this trend. We propose develop a higher number of molecular markers and combine this information with geometric morphometrics approach under a unified model and inference framework to estimate geographical and gene flow patterns, identify managment units (MU), and recognize evolutionary significant units (ESU), which would correspond to isolated cryptic species.