English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Eubulus  cf.  elongatus  was recently recorded as one of the most destructive pests of cassava in the Brazilian Cerrado. In this study, we evaluate the susceptibility of  E.  cf.  elongatus  to entomopathogenic fungi and nematodes in laboratory. Adults and larvae of  E.  cf.  elongatus  were first collected in the field to assess the natural occurrence of fungi and nematodes. Seven nematode species within  Heterorhabditis  and  Steinernema  genera were tested in direct applications onto the larvae or indirectly through soil inoculation (2000 infective juveniles per group of 10 larvae). Bioassays with 16 strains of entomopathogenic fungi ( beauveria  and  metarhizium  species) were conducted by immersion (10 8  conidia per mL), direct spray or by exposing adults to soil sprayed with conidial suspensions (6 × 10 4  conidia per cm 2 ). In all bioassays insects were kept at 24–25 °C and 75-90% RH for 16 days. Nematodes were not found naturally occurring in  E.  cf.  elongatus  larvae collected in field. Of the adults collected, 1.76% and 0.04% were infected with  B. bassiana  and  Metarhizium  sp., respectively. In the laboratory trials, the highest mortality of larvae was caused by  H. bacteriophora  (95.0% for application on larvae and 60% for soil application). Entomopathogenic fungi caused low mortality rates in adults of  E.  cf.  elongatus , being less than 11% in direct and soil applications and reaching a maximum of 16.07% when insects were treated by immersion. Our results show the potential of nematodes, such as  H. bacteriophora , in controlling the larvae of  E. cf. elongatus  in soil.

biocontrol science and technology

Assessment of entomopathogenic nematodes and fungi against  Eubulus  cf.  elongatus  Hustache (Coleoptera: Curculionidae), a destructive cassava pest in Brazil