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          Institute: MPI für Evolutionsbiologie     Collection: Tropical ecology     Display Documents



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ID: 397365.0, MPI für Evolutionsbiologie / Tropical ecology
Genetic diversity, population structure and gene flow in native populations of a proposed biocontrol agent (Cornops aquaticum)
Authors:Brede, Edward G.; Adis, Joachim; Schneider, Paula
Language:English
Date of Publication (YYYY-MM-DD):2008-12
Title of Journal:Biological Journal of the Linnean Society
Volume:25
Issue / Number:4
Start Page:666
End Page:676
Review Status:not specified
Audience:Not Specified
Abstract / Description:The semiaquatic grasshopper Cornops aquaticum is native to South America, with a distribution as far south as the Argentinean pampas and as far north as the Gulf of Mexico. This grasshopper is being proposed as a form of biological control agent for the invasive aquatic macrophyte (Eichhornia crassipes) in South Africa. The results of a molecular study (six microsatellite loci) conducted on 11 C. aquaticum populations is presented. Unlike in contiguous mainland South American populations, we found genetic diversity to be lowest in a South African quarantine population, with reduced values in two other isolated populations from South America. In addition, F-st/R-st/analysis of molecular variance and Bayesian cluster analysis suggested high levels of connectivity between mainland populations. The implications of these findings and their relationship to those of a recent morphological study suggest that the suitability of C. aquaticum as a form of biocontrol might be unpredictable at best.
Free Keywords:bottleneck; founder; non-native alien; Orthoptera
External Publication Status:published
Document Type:Article
Communicated by:Brigitte Lechner
Affiliations:MPI für Evolutionsbiologie/AG Tropenökologie
External Affiliations:Fed Univ Para, Dept Genet, BR-66075110 Belem, Para Brazil
Identifiers:ISSN:0024-4066 (print) [ID-No:1]
ISSN:1095-8312 (online) [ID-No:2]
DOI:10.1111/j.1095-8312.2008.00993.x [ID-No:3]
LOCALID:2660/S 38942 [Listen-Nummer/S-Nummer]
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