Red Palm Weevil (RPW), Rhynchophorus ferrugineus Oliv. (Col.: Dryophthoridae), is a key pest of date palm in Asia, North Africa and Spain. A field study was conducted in south eastern Iran to find the effect of odor sources in traps on RPW behavior. This study consisted of four experiments; each included four treatments (odor sources) and eight replications. Each experiment was repeated 4 times (i.e. four different distances between odor sources (treatments) were considered: 0, 0.5, 2 and 5 meters). In each treatment, two traps were used. The treatments were as follows: 1) one trap included two pheromones and the other trap included two pieces of plant tissue, 2) both traps included one pheromone along with one piece of plant tissue, 3) both traps included one pheromone, and 4) both traps included one piece of plant tissue. Overall, much less RPWs were caught in the traps of treatments 3 and 4 (baited with only the pheromone or the plant bait) than in the traps of treatments 1 and 2 (baited with pheromone and plant tissue) evidencing the phenomenon of synergy, previously reported. The Results of analysis of variance of total catch of traps, at all between-trap distances indicated that there was significant difference among treatments. In all experiments, traps that contained just palm tissue had the least catch rate. The RPW distinguished pheromone from plant odor when both sources were separated by less than 5 m. At distances of 5 m, attractancy of plant odor was similar to pheromone attractancy. Our results suggest that each of the chemical cues probably induce a different behavioral process. Probably, pheromone would attract RPWs from a distance, making them fly towards the pheromone sources (traps) while the plant odor would arrest flight and induce landing and local search by walking for palm tissue, resulting in entry into traps.
Avand-Faghih, A. (1996): The biology of red palm weevil, Rhynchophorus ferrugineus Oliv. (Coleoptera: Curculionidae) in Saravan region (Sistan and Balouchistan Province, Iran). Appl. Entomol. and Phytopathol. 63, 16–18.
Avand-Faghih, A. (2004): Identification et application agronomique de synergistes végétaux de la phéromone du charançon Rhynchophorus ferrugineus Olivier (1970). Mémoire présenté pour obtenir le titre de Docteure de l’INA-PG en Biologie et Agronomie ‘Protection des cultures’. pp. 105–130.
Avand-Faghih, A., Mohammadpour, K., Mohammadi, H., Khorshidi, H. R., Askari, M., Damghani, R., Rochat, D., Malosse, C., Letter, M. and Renou, M. (2005): Chemical ecology of coleopteran pests of date palm. In: Proc. of 1st International Festival and Symposium on Date Palm, Bandar Abbas, Iran. pp. 85–86.
El-Sebay, Y. (2003): Ecological studies on the red palm weevil Rhynchophorus ferrugineus Oliv., (Coleoptera: Curculionidae) in Egypt. Egyptian J. Agric. Res. 81, 523–529.
EPPO (2008): European and Mediterranean Plant Protection Organization. Data sheets on quarantine pests Rhynchophorus ferrugineus. EPPO Bulletin 38, 55–59.
EPPO (2009): Rhynchophorus ferrugineus found on Howea forsteriana in Sicilia, Italy. No. 32009/051. European and Mediterranean Plant protection Organization, Paris, France. Available at: https://archives.eppo.int/EPPOReporting/2009/Rse-0912.pdf. Accessed on: 12 June 2015.
FAOSTAT (2017): Food and agricultural commodities production. Available at: http://www.fao.org/faostat/en/#-data/QC/visualize . Last Update on 17 May 2017.
Faleiro, J. R., Abraham, V. A., Al-Shuaibi, M. A. and Kumar, T. P. (2000): Field evaluation of red palm weevil, Rhynchophorus ferrugineus Oliv. Pheromone (ferrugineol) lures. Indian J. Entomol. 62, 427–433.
Faleiro, J. R., Rangnekar, P. A. and Satarkar, V. R. (2003): Age and fecundity of female red palm weevils Rhynchophorus ferrugineus (Oliver) (Coleoptera: Curculionidae) captured by pheromone traps in coconut plantations of India. Crop Protection 22, 999–1002.
Fiaboe, K. K. M., Peterson, A. T., Kairo, M. T. K. and Roda, A. L. (2012): Predicting the potential worldwide distribution of the red palm weevil Rhynchophorus ferrugineus (Olivier) (Coleoptera: Curculionidae) using ecological niche modeling. Florida Entomologist 95, 659–673.
Giblin-Davis, R. M., Oehlschlager, A. C., Perez, A., Gries, G., Gries, R., Weissling, T. J., Chinchilla, C. M., Pena, J. E., Hallett, R. H., Pierce, H. D. and Gonzalez, L. M. (1996): Chemical and behavioral ecology of palm weevils (Curculionidae: Rhynchophorinae). Fla. Entomol. 79, 153–167. doi: 10.2307/3495812.
Guarino, S., Lo Bue, P., Peri, E. and Colazza, S. (2011): Responses of Rhynchophorus ferrugineus adults to selected synthetic palm esters: Electroantennographic studies and trap catches in an urban environment. Pest Manag. Sci. 67, 77–81.
Guarino, S., Peri, E., Lo Bue, P., Germana, M. P., Colazza, S., Anshelevich, L., Ravid, U. and Soroker, V. (2012): Assessment of synthetic chemicals for disruption of Rhynchophorus ferrugineus response to attractant- baited traps in an urban environment. Phytoparasitica 41, pp. 79–88.
Hallett, R. H., Gries, G., Gries, R., Borden, J. H., Czyzewska, E., Oehlschlager, A. C., Pierce, H. D., Angerilli, N. P. D. and Rauf, A. (1993a): Aggregation pheromone of two Asian palm weevils, Rhynchophorus ferrugineus and R. vulneratus. Naturwissenschaften 80, 328–331.
Hallett, R. H., Oehlschlager, C. A., Gries, G., Angerilli, N. P. D., Al-Sharequi, R. K., Gassouma, M. S., Borden, J. H. (1993b): Field testing of aggregation pheromones of two Asian palm weevils. In: Proc. of International Palm Oil Congress, September 1993, Kuala Lumpur, Malaysia. pp. 661–668.
Hallett, R. H., Oehlschlager, A. C. and Borden, J. H. (1999): Pheromone trapping protocols for the Asian palm weevil, Rhynchophorus ferrugineus (Coleoptera: Curculionidae). Int. J. Pest Manag. 45, 231–237.
Hasni, N., Pinier, C., Imed, C., Ouhichi, M., Couzi, P., Chermiti, B., Frérot, B., Saïd, I. and Rochat, D. (2017): Synthetic co-attractants of the aggregation pheromone of the date palm root borer Oryctes agamemnon. J. Chem. Ecol. 43, 631–643.
Jaffé, K., Sánchez, P., Cerda, H., Hernández, J. V., Jaffé, R., Urdaneta, N., Guerra, G., Martínez, R. and Miras, B. (1993): Chemical ecology of the palm weevil Rhynchophorus palmarum (L.) (Coleoptera: Curculionidae): attraction to host plants and to a male-produced aggregation pheromone. J. Chem. Ecol. 19, 1703–1720.
Oehlschlager, A. C. (2007): Optimizing trapping for palm weevils and beetles. Actes de la 3e conférence internationale sur le Dattier EAU (2006). Acta Horticulturae 736, 347–36.
Rochat, D., Malosse, C., Lehere, M., Ramirez-Lucas, P., Einhorn, J. and Zagatti, P. (1993): Identification of new pheromone related compounds from volatiles produced by males of four Rhynchophorinae weevils (Coleoptera, Curculionidae). Comptes Rendus de l’Academie des Sciences, Serie II 316, 1737–1742.
Said, I., Renou, M., Morin, J. P., Ferreira, J. M. S. and Rochat, D. (2005): Interactions between acetoin, a plant volatile and pheromone in Rhynchophorus palmarum: Behavioral and olfactory neuron responses. J. Chem. Ecol. 31, 1789–1805. doi: 10.1007/s10886-005-5927-4.
SAS Institute Inc. (2002): SAS/STAT user’s guide. Version 9.1. SAS Institute Inc., Cary, North Carolina.
Vacas, S., Abad-Pay, M., Primo, J. and Navarro-Llopis, V. (2014): Identification of pheromone synergists for Rhynchophorus ferrugineus trapping systems from Phoenix canariensis palm volatiles. J. Agric. Food Chem. 62, 6053–6064.
Vacas, S., Melita, O., Michaelakis, A., Milonas, P., Minuz, R., Riolo, P., Abbass, M. A., Lo Bue, P., Colazza, S., Peri, E., Soroker, V., Livne, Y., Primo, J. and Navarro-Llopis, V. (2016): Lures for red palm weevil trapping systems: aggregation pheromone and synthetic kairomone. Pest. Manag. Sci. 73, 223–231.
Wakil, W., Faleiro, J. R., Miller, T. A., Bedford, G. O. and Krueger, R. R. (2015): Date palm production and pest management challenges. In: W. Wakil, J. R. Faleiro and T. A. Miller (eds): Sustainable Pest Management in Date Palm: Current Status and Emerging Challenges. Springer, pp. 1–11.