« Previous AbstractAntifungal Activities of Volatile Secondary Metabolites of Four Diaporthe Strains Isolated from Catharanthus roseus    Next AbstractBehavior and Electrophysiological Response of Gravid and Non-Gravid Lucilia cuprina (Diptera: Calliphoridae) to Carrion-Associated Compounds »

J Parasitol

Title:		Influence of tapeworm infection on the production of aggregation pheromone and defensive compounds in Tribolium castaneum
Author(s):		Yan G; Phillips TW;
Address:		"Department of Animal Health and Biomedical Sciences, University of Wisconsin, Madison 53706, USA"
Journal Title:		J Parasitol
Year:		1996
Volume:		82
Issue:		6
Page Number:		1037 - 1039
DOI:
ISSN/ISBN:		0022-3395 (Print) 0022-3395 (Linking)
Abstract:		"Recent studies suggest that parasites affect host development, reproduction, and behavior through alterations of host hormones and pheromones, or other hormone-triggered biochemical events. We previously reported that Hymenolepis diminuta infection affects surface-seeking and cannibalism behaviors, and reduces male sperm precedence of Tribolium castaneum beetles. This study examined the quantitative effects of H. diminuta on the production of aggregation pheromone and 3 defensive compounds in male T. castaneum beetles, using 2 wild-caught, geographically distinct T. castaneum strains. For the c-Madison strain, infected beetles exhibited a 2- to 22-fold increase in defensive compounds; conversely, no changes were observed in strain c-Africa. Parasite infection did not significantly influence aggregation pheromone secretion in either strain. Because defensive compounds function as repellents or deterrents to other insects, parasite-induced increases in the secretion of defensive compounds may be a physiologic clue for the behavioral changes in infected T. castaneum beetles. Significant among-strain variation in defensive compound production seen in infected beetles suggests that caution is needed before generalizing about changes in volatile production and in host behavior induced by a parasite"
Keywords:		"Analysis of Variance Animals Chromatography, Gas Chromatography, High Pressure Liquid Feces/parasitology Host-Parasite Interactions Hymenolepis/*physiology Insect Hormones/*biosynthesis Male Pheromones/*biosynthesis Rats Tribolium/metabolism/*parasitology;"
Notes:		"MedlineYan, G Phillips, T W eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. 1996/12/01 J Parasitol. 1996 Dec; 82(6):1037-9"