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J Chem Ecol

Title:		Chemical communication in cucujid grain beetles
Author(s):		Oehlschlager AC; Pierce AM; Pierce HD; Borden JH;
Address:		"Department of Chemistry, Simon Fraser University, V5A 1S6, Burnaby, British Columbia, Canada"
Journal Title:		J Chem Ecol
Year:		1988
Volume:		14
Issue:		11
Page Number:		2071 - 2098
DOI:		10.1007/BF01014251
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"Males of five sympatric species of economically damaging cucujid grain beetles,Cryptolestes ferrugineus (Stephens),C. pusillus (Schonhen),C. turcicus (Grouvelle),Oryzaephilus mercator (Fauvel), andO. surinamensis (L.), produce macrolide aggregation pheromones especially in the presence of food. Work leading to the isolation, identification, and establishment of biological activity of these semiochemicals is reviewed. The trivial name 'cucujolide' is proposed and used to identify these compounds that are characteristic of the Cucujidae. The twoOryzaephilus share species share a common cucujolide pheromone, whileCryptolestes species use cucujolides that are either enantiomeric, unique to the genus, or released in trace quantities byOryzaephilus spp. and not used as pheromones by the latter species. The major mechanisms for species specificity in chemical communication are: (1) presence of a unique pheromone (C. ferrugineus andC. pusillus); (2) use of pheromones that are inactive alone but synergize response to cucujolides unique to a species (C. pusillus, C. turcicus, andO. surinamensis); (3) response to only one enantiomer of a pheromone (C. ferrugineus, O. surinamensis, andO. mercator); and (4) synergism between enantiomers of a pheromone (C. turcicus). The only species for which cross-attraction was evident wasO. mercator toO. surinamensis. Both sexes ofOryzaephilus spp. produce (R)-1-octen-3-ol, which highly synergizes response to the cucujolide pheromones. Similar synergism occurs between hexanal, octanal, and nonanal and the cucujolide pheromones ofOryzaephilus spp. The males of a sixth cucujid species,Cathartus quadricollis (Guer) produce a different aggregation pheromone, (3R,6E)-7-methyl-6-nonen-3-yl acetate. Trapping ofCryptolestes andOryzaephilus spp. in cardboard traps baited with pheromones is efficient in environments mimicking food-storage areas. Pheromone-baited plastic probe traps are the most efficient at capturing these species in infested grain"
Keywords:
Notes:		"PubMed-not-MEDLINEOehlschlager, A C Pierce, A M Pierce, H D Jr Borden, J H eng 1988/11/01 J Chem Ecol. 1988 Nov; 14(11):2071-98. doi: 10.1007/BF01014251"