Acoustic activity cycles of rhynchophorus ferrugineus (coleoptera

Dryophthoridae) early instars after beauveria bassiana (hypocreales: Clavicipitaceae) treatments

Johari Jalinas, Berenice Göerri-Agulló, Omotola G. Dosunmu, Luis V.Lopez Llorca, Richard W. Mankin

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Rhynchophorus ferrugineus (Olivier; Coleoptera: Dryophthoridae) is a pest of many crop and ornamental palm tree species in subtropical regions worldwide. Larvae tunnel and feed unseen in the trunks, ultimately causing irreparable harm and killing the palm. Beauveria bassiana (Balsamo-Crivelli; Hypocreales: Clavicipitaceae) Vuillemin is under evaluation as a biological control agent for R. ferrugineus management but its effects are difficult to monitor under field conditions except by acoustic methods. Older (>30 d) larvae treated with B. bassiana display statistically significant reductions in acoustic activity in semi-field studies, but activity of younger larvae has been more difficult to analyze due to their short-duration cycles of increasingly active and then less active feeding and movement, followed by inactive molting. A procedure was developed to characterize effects of B. bassiana treatments by subdividing long-Term recording periods into activity cycles. Treatment effects were compared within and across cycles. The procedure demonstrated statistically significant differences among acoustic activity rates over time for 15-d-old larvae exposed to control, 104, or 108 conidia ml-1 B. bassiana treatments. The results suggest that acoustic technology has considerable utility for monitoring of larval development and for evaluating efficacy of pest management treatments in environments where the targeted insect pests are hidden from view.

Original languageEnglish
Pages (from-to)551-557
Number of pages7
JournalAnnals of the Entomological Society of America
Volume110
Issue number6
DOIs
Publication statusPublished - 1 Nov 2017

Fingerprint

Rhynchophorus ferrugineus
Clavicipitaceae
Hypocreales
Beauveria bassiana
acoustics
instars
Coleoptera
larvae
monitoring
Arecaceae
pest management
subtropics
larval development
insect pests
conidia
tree trunk
biological control agents
molting
pests
duration

Keywords

  • Acoustic technology
  • Biocontrol
  • Molting
  • Red palm weevil

ASJC Scopus subject areas

  • Insect Science

Cite this

Acoustic activity cycles of rhynchophorus ferrugineus (coleoptera : Dryophthoridae) early instars after beauveria bassiana (hypocreales: Clavicipitaceae) treatments. / Jalinas, Johari; Göerri-Agulló, Berenice; Dosunmu, Omotola G.; Llorca, Luis V.Lopez; Mankin, Richard W.

In: Annals of the Entomological Society of America, Vol. 110, No. 6, 01.11.2017, p. 551-557.

Research output: Contribution to journalArticle

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