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.
Adult feeding by the rice water weevil Lissorhoptrus oryzophilus on different host plants / D. Lupi, C. Cenghialta, M. Colombo. - In: BULLETIN OF INSECTOLOGY. - ISSN 1721-8861. - 62:2(2009 Dec), pp. 229-236.
Adult feeding by the rice water weevil Lissorhoptrus oryzophilus on different host plants
D. LupiPrimo
;M. ColomboUltimo
2009
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.File | Dimensione | Formato | |
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bulletinvol62-2009-229-236lupi.pdf
accesso aperto
Tipologia:
Pre-print (manoscritto inviato all'editore)
Dimensione
640.1 kB
Formato
Adobe PDF
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640.1 kB | Adobe PDF | Visualizza/Apri |
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