Neotropical Entomology

, Volume 48, Issue 1, pp 25–37 | Cite as

Factors Influencing Mating Behavior and Success in the Red Palm Weevil, Rhynchophorus ferrugineus Olivier (Coleoptera: Dryophthoridae)

  • M M Abdel-Azim
  • S A Aldosari
  • P ShuklaEmail author
Ecology, Behavior and Bionomics


The effects of body size, age, feeding and mating status, conspecific volatiles from live adults, synthetic aggregation pheromone, and a pheromone synergist, ethyl acetate, on the mating behavior of red palm weevil, Rhynchophorus ferrugineus Olivier, were investigated. To evaluate these factors, variables such as mating latency, frequency and duration, and refractory period were assessed. While both, body size and age, influenced the mating behavior, the latter showed a stronger effect. The large males recorded frequent and longer matings, whereas the young males outperformed the old weevils in all the studied variables. The difference in body size or age of females showed a limited effect. After 72 h without food, the males showed a significant decline in mating frequency and duration, and refractory period. Mating status showed comparatively stronger effects on mating variables. In the case of females, mating status emerged as the most important factor affecting four out of five variables. The volatiles from the males, grouped males and females, and synthetic aggregation pheromone both alone and in combination with ethyl acetate triggered mating initiation, propelled mating frequency, prolonged total mating duration, and reduced the refractory period. However, the presence of females or ethyl acetate alone was a weak mating stimulator.


aggregation pheromone conspecific volatiles body size age starvation mating status 



We thank KSU – Deanship of Scientific Research, Research Chair Program, King Saud University, Saudi Arabia.

Funding Information

This research was supported by Grants-in-aid for Scientific Research No. 11-AGR1477-02, King Abdul Aziz City for Science and Technology – National Plan for Science, Technology and Innovation (KACST-NSTIP) (MAARIFAH), Saudi Arabia.


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Copyright information

© Sociedade Entomológica do Brasil 2018

Authors and Affiliations

  1. 1.Chair of Date Palm Research, Dept of Plant Protection, College of Food and Agricultural SciencesKing Saud Univ RiyadhSaudi Arabia

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