Naslov
The invasion of Europe by western corn rootworm results in changes to wing morphology

Autori
Lemic, Darija ; Mikac, M. Katarina ; Bažok, Renata ; Benitez, A. Hugo

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
26th IWGO Conference / IWGO IOBC Global - Peking : IWGO, 2017, 8-T 2

Skup
26th IWGO Conference

Mjesto i datum
Peking, Kina, 10.04.2017. - 12.04.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
invasion process, geometric-morphometrics, western corn rootoworm
(nvasion process, geometric-morphometrics, western corn rootoworm)

Sažetak
An analysis of the wing morphology (size and shape) within and among western corn rootworm, Diabrotica virgifera virgifera LeConte, populations over a large geographic scale in Europe was conducted. For this study 500 D. v. virgifera were collected over an area of 160, 000 km2 of agricultural corn production and analysed using standard geometric morphometric procedures based on the hind wing venation of 14 landmarks. The data presented here represents a major morphological investigation of one invasive species, during the introductory phase of their invasion of Europe. The results showed phenotypic changes across a major geographic corridor of invasion by this pest into corn growing areas in Europe. Both principal components analysis and the two distance measures (Procrustes Distances and Mahalanobis values that represent multivariate shape differences) used to analyse the data showed that hind wing shape and size could be reliably used, as there were discernible patterns in the data related to the invasion process of D. v. virgifera. Also, these morphological patterns were found to correspond to the findings from previously conducted population genetic studies of the same populations. Findings overall showed that population differences found using microsatellite markers could also be detected at the same geographic locations using morphometric techniques. The results of this study have important implications for invasive species monitoring and management, particularly where genetic capabilities and monetary investment in such techniques maybe not be feasible. This study presents an affordable and accessible genetics-alternative technique that reliably demonstrates that hind-wing shape and size differences can be used to reveal populations differences and thus can be used as a population biomarker when investigating biological invasions.

Izvorni jezik
Engleski

POVEZANOST RADA