ISSN:
1573-1561
Keywords:
Cathartus quadricollis (Guér.)
;
square-necked grain beetle
;
Coleoptera
;
Cucujidae
;
aggregation pheromone
;
(3R,6E)-7-methyl-6-nonen-3-yl acetate
;
(E)-7-methyl-6-nonen-3-one
;
(E)-7-methyl-6-nonen-3-ol
;
(6E)-7-methyl-3-propyl-2,6-nonadienyl acetate
;
1-octen-3-ol
;
repellent
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract When feeding on rolled oats, male square-necked grain beetles,Cathartus quadricollis (Guér.), produced the aggregation pheromone (3R,6E)-7-methyl-6-nonen-3-yl acetate, for which the trival name “quadrilure” is proposed. The pheromone was highly attractive to both sexes in a two-choice, pitfall olfactometer modified to retain responding beetles by placing a food stimulus (an oat flake) in the glass vials containing the experimental and control stimuli. TheS enantiomer of the pheromone was inactive. Males also produced small amounts of (E)-7-methyl-6-nonen-3-one, (E)-7-methyl-6-nonen-3-ol, and (6E)-7-methyl-3-propyl-2,6-nonadienyl acetate, but these compounds were inactive in the laboratory bioassay. Segregated males and females both produced (R)-(−)-1-octen-3-ol, which by itself was repellent to both sexes but did not diminish beetle response to the aggregation pheromone.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01014023
