Bulletin of Insectology (2009) 62, 229-236

Daniela Lupi, Cesare Cenghialta and Mario Colombo (2009)
Adult feeding by the rice water weevil Lissorhoptrus oryzophilus on different host plants
Bulletin of Insectology 62 (2), 229-236
Abstract: 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.
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Database assignments for author(s): Daniela Lupi

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Lissorhoptrus oryzophilus	Rice (Oryza)	Italy