Naslov
Changes in corn rootworm wing morphology related to development of pest resistance

Autori
Mikac, M. Katarina ; Lemic, Darija ; 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, 6-T 5

Skup
26th IWGO Conference

Mjesto i datum
Peking, Kina, 10.04.2017. - 12.04.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
resistance, wing shape, patterns, Bt, rotatation

Sažetak
The wing morphology of 358 western corn rootworm, Diabrotica virgifera virgifera LeConte, individuals from populations in Iowa (n=3 populations), Indiana (n=4) and Illinois (n=2), were investigated using standard geometric morphometric procedures based on the hind wing venation of 14 landmarks. The populations investigated comprised resistant (ie. rotation and Bt maize strains) and non-resistant populations ; data analysis was divided into two groups: 1) resistant versus non-resistant populations ; and 2) rotation versus Bt maize strains. The results clearly demonstrated a morphological difference in resistant versus non-resistant populations and rotation versus Bt maize resistant strains of corn rootworm. This study further confirms the preliminary results of Mikac et al. (2013) who demonstrated evidence of wing shape and size differences in corn rootworm from rotated versus continuous maize in Nebraska, Missouri, Iowa and Illinois. The results of this study further show the utility of hind wing morphology as an inexpensive and accessible population biomarker for corn rootworm. With simple scientific equipment (camera mounted microscopes) and readily available free-software to capture and analyse land mark (shape and size) data, it is possible to cheaply monitor the pest resistance development and differences in rootworm populations.

Izvorni jezik
Engleski

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