Synapse
⌘+K
Synapse
PulseExploreClubsResearchersJournals
Instagram
HomeClubsExplore
January 7, 2022Journal of Economic Entomology

Field Assessment of Oryzophagus oryzae (Coleoptera: Curculionidae) Preference and Performance on Selected Rice Cultivars

View Full Paper
Ask AI
Bookmark
Share

Authors

JPJuliano de Bastos PaziniUniversidade Federal de PelotasAGAnderson Dionei GrützmacherUniversidade Federal de PelotasESEnio Júnior SeidelUniversidade Federal do Amapá

Discussion

Loading...

Member takes

Implication

Field study demonstrates antibiosis-mediated resistance against Oryzophagus oryzae in specific rice cultivars, indicating that larval growth inhibition drives pest suppression.

Key Points

  • To evaluate feeding preference, oviposition behavior, and developmental performance of the rice water weevil (Oryzophagus oryzae) across selected rice cultivars under natural field conditions.
  • Evaluated six rice cultivars ('BRS Pampa CL', 'BRS Querência', 'BRS Ligeirinho', 'BRS Atalanta', 'BRS Firmeza', and 'Dawn') across two consecutive seasons under natural field infestation.
  • Measured adult feeding and oviposition preferences at 5, 8, and 11 days after flooding (DAF), alongside egg viability and first-instar root densities at 15 DAF.
  • Tracked larval densities at 25 and 35 DAF, larval growth, pupation timing, adult emergence, and emerged female body weight.
  • Feeding and oviposition preferences did not differ significantly among cultivars at 5, 8, and 11 DAF, nor did egg viability and initial larval density at 15 DAF.
  • Larval density per sample differed significantly at 25 and 35 DAF, peaking at up to 24.5 on 'BRS Pampa CL', 16.1 on 'BRS Querência' and 'BRS Ligeirinho', and 8.8 on 'BRS Atalanta', 'BRS Firmeza', and 'Dawn'.
  • Cultivars 'BRS Atalanta', 'BRS Firmeza', and 'Dawn' caused larval malnutrition, inhibited growth, delayed pupation and adult emergence, and substantially decreased female adult body weight.

Cite This Study

Pazini et al. (2022) studied this question.

synapsesocial.com/papers/6aa6827f163c608a82397ccfhttps://doi.org/10.1093/jee/toac003
View Full Paper
Ask AI
Bookmark
Share

Also Consider

Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Toxicity to, oviposition and population growth impairments of Callosobruchus maculatus exposed to clove and cinnamon essential oils2018 · 67 citations
  2. 2Host Plant Quality and Fecundity in Herbivorous Insects2002 · 2,225 citations
  3. 3Intraspecific Variation in Body Size and Fecundity in Insects: A General Relationship1993 · 1,734 citations
  4. 4Fungicide and insecticide residues in rice grains2017 · 20 citations