On the spatial spread of the Rice water weevil, Lissorhoptrus oryzophilus Kuskel (Coleoptera: Erirhinidae), in Italy
Articolo
Data di Pubblicazione:
2010
Citazione:
On the spatial spread of the Rice water weevil, Lissorhoptrus oryzophilus Kuskel (Coleoptera: Erirhinidae), in Italy / D. Lupi, M.L. Giudici, C. Cenghialta, B. Villa, D. Passoni, M. Colombo. - In: JOURNAL OF ENTOMOLOGICAL AND ACAROLOGICAL RESEARCH. - ISSN 2038-324X. - 42:2(2010), pp. 81-90.
Abstract:
A five year study has been made to establish the spread of the rice water
weevil Lissorhoptrus oryzophilus (Coleoptera: Erirhinidae) in Northern Italy.
Data obtained with GPS from 2005 throughout 2009 were first georeferenced with
SW ArcGis® 9.2, then overlapped and compared to the map of the European environmental
landscape based on the interpretation of satellite images (CORINE Land
Cover map) and to the hydrographic chart CT10 (Technical Regional map 10000).
The analysis of the radial rate of spread per year indicates a deceleration in the
expansion from 10.864 ± 6.801 km/year in 2005 to 5.318 ± 1.401 km/year in 2009.
In five years the weevil has expanded its distribution in nearly all rice paddies in
Lombardy and Piedmont, over an area of about 200,000 ha, which correspond to
86% of the total Italian rice area. Its expansion is thought to follow a type of stratified
dispersal, due both to insect adult active dispersal and to accidental movements
caused by human transportation
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Italian rice growing areas; settlement; new records; expansion radius
Elenco autori:
D. Lupi, M.L. Giudici, C. Cenghialta, B. Villa, D. Passoni, M. Colombo
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