Laboratory assays to determine the leaf consumption rates of adult rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera Erirhinidae), were conducted under no-choice conditions. Adults were individually reared on excised leaves of Heteranthera reniformis Ruiz et Pavon, Echinochloa crus-galli (L.) P. Beauv., Leersia oryzoides L., Schoenoplectus mucronatus L., Bolboschoenus maritimus L., and Alisma spp. Their consumption was at first compared at 28 °C. Results showed that E. crus-galli was the most preferred host. No consumption was detected on S. mucronatus and Alisma spp. Further trials were conducted between 10-50 °C on E. crus-galli, L. oryzoides and B. maritimus. Feeding activity was recorded from 14 °C to 48 °C. Scars were not detected at 10 °C, 12 °C and 50 °C for all the weeds. All the analyzed parameters resulted influenced by weed species and temperature.
|Titolo:||Adult feeding by the rice water weevil Lissorhoptrus oryzophilus on different host plants|
LUPI, DANIELA (Primo)
COLOMBO, MARIO (Ultimo)
|Parole Chiave:||alien species; feeding preference; host plant; image processing; laboratory assay; leaf area; Oryza sativa|
|Settore Scientifico Disciplinare:||Settore AGR/11 - Entomologia Generale e Applicata|
|Data di pubblicazione:||dic-2009|
|Appare nelle tipologie:||01 - Articolo su periodico|