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J Chem Ecol

Title:		"Sex pheromone of the vine mealybug, Planococcus ficus in Israel: occurrence of a second component in a mass-reared population"
Author(s):		Zada A; Dunkelblum E; Assael F; Harel M; Cojocaru M; Mendel Z;
Address:		"Department of Entomology, ARO, Bet Dagan 50250, Israel. anatzada@volcani.agri.gov.il"
Journal Title:		J Chem Ecol
Year:		2003
Volume:		29
Issue:		4
Page Number:		977 - 988
DOI:		10.1023/a:1022944119077
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"Two pheromonal components were detected in airborne collections from the vine mealybug Planococcus ficus (Signoret) (Hemiptera: Pseudococcidae) mass-reared on potato sprouts. The compounds were identified as (S)-lavandulyl senecioate (I) and (S)-lavandulyl isovalerate (II) by GC and GC-MS by comparison with synthetic standards. Chiral GC analysis on a cyclodextrin column established their chirality. Compound I was identified recently as the sex pheromone of P. ficus in California. The attraction of vine mealybug males to both components I and II was demonstrated in a Petri dish bioassay and in a flight assay in the rearing chamber. Indoors, both compounds displayed a similar level of attractiveness to the mass-reared males. However, trials in a vineyard indicated that feral males were attracted only to compound I. Reanalysis of the airborne pheromone indicated that laboratory first generation daughters of females that were collected in the vineyard produce only (S)-lavandulyl senecioate (I). The relative amount of (S)-lavandulyl isovalerate (II) increased gradually in each subsequent generation of P. ficus reared on potatoes. These findings indicate that feral P. ficus mealybugs produce and respond only to (S)-lavandulyl senecioate (I), whereas mealybugs that were reared in the laboratory on potato sprouts produce and respond to both (S)-lavandulyl senecioate (I) and (S)-lavandulyl isovalerate (II)"
Keywords:		"Alkenes/*analysis/isolation & purification/*pharmacology Animals Biological Assay Esters/*analysis/isolation & purification/*pharmacology Female Hemiptera/*chemistry Male Monoterpenes *Movement Plants, Edible Population Dynamics Sex Attractants/*analysis/;"
Notes:		"MedlineZada, A Dunkelblum, E Assael, F Harel, M Cojocaru, M Mendel, Z eng Research Support, Non-U.S. Gov't 2003/05/31 J Chem Ecol. 2003 Apr; 29(4):977-88. doi: 10.1023/a:1022944119077"