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J Insect Sci

Title:		"Tissue distribution and lipophorin transport of hydrocarbons and sex pheromones in the house fly, Musca domestica"
Author(s):		Schal C; Sevala V; Capurro ML; Snyder TE; Blomquist GJ; Bagneres AG;
Address:		"Department of Entomology, North Carolina State University, Raleigh, NC 27695-7613, USA. coby_schal@ncsu.edu"
Journal Title:		J Insect Sci
Year:		2001
Volume:		20011024
Issue:
Page Number:		12 -
DOI:
ISSN/ISBN:		1536-2442 (Electronic) 1536-2442 (Linking)
Abstract:		"We investigated the relationship between epicuticular and internal hydrocarbons in the adult house fly, Musca domestica and the distribution of hydrocarbons, including the female sex pheromone component, (Z)-9-tricosene, in tissues. Internal hydrocarbons increased dramatically in relation to sexual maturation and were found in the hemolymph, ovaries, digestive tract, and fat body. (Z)-9-Tricosene comprised a relatively large fraction of the hydrocarbons in the female carcass and hemolymph, and less so in other tissues, while other hydrocarbons were represented in greater amounts in the ovaries than in other tissues. It therefore appears that certain hydrocarbons were selectively provisioned to certain tissues such as the ovaries, from which pheromone was relatively excluded. Both KBr gradient ultracentrifugation and specific immunoprecipitation indicated that > 90% of hemolymph hydrocarbons were associated with a high-density lipophorin (density = 1.09 g ml(-1)), composed of two apoproteins under denaturing conditions, apolipophorin I (approximately 240 kD) and apolipophorin II (approximately 85 kD). Our results support a predicted model (Chino, 1985) that lipophorin is involved in the transport of sex pheromone in M. domestica. In addition to delivering hydrocarbons and sex pheromones to the cuticular surface, we suggest that lipophorin may play an important role in an active mechanism that selectively deposits certain subsets of hydrocarbons at specific tissues"
Keywords:		"Analysis of Variance Animals Biological Transport Electrophoresis, Polyacrylamide Gel Female Gas Chromatography-Mass Spectrometry Hemolymph/chemistry Houseflies/*metabolism Hydrocarbons/*metabolism Immunoprecipitation Lipoproteins/chemistry/isolation & pu;"
Notes:		"MedlineSchal, C Sevala, V Capurro, M L Snyder, T E Blomquist, G J Bagneres, A G eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. 2004/09/30 J Insect Sci. 2001; 1:12. Epub 2001 Oct 24"