« Previous AbstractAerial spraying of fenitrothion in forest programs: some problems and some solutions    Next Abstract"In the tripartite combination Botrytis cinerea-Arabidopsis-Eurydema oleracea, the fungal pathogen alters the plant-insect interaction via jasmonic acid signalling activation and inducible plant-emitted volatiles" »

Bull Entomol Res

Title:		Longevity and pheromone output in stored-product Bostrichidae
Author(s):		Edde PA; Phillips TW;
Address:		"Oklahoma State University, Department of Entomology and Plant Pathology, 127 Noble Research Center, Stillwater, OK 74078, USA. edde@montana.edu"
Journal Title:		Bull Entomol Res
Year:		2006
Volume:		96
Issue:		6
Page Number:		547 - 554
DOI:		10.1017/ber2006456
ISSN/ISBN:		0007-4853 (Print) 0007-4853 (Linking)
Abstract:		"Information on longevity and on the effect of ageing on pheromone signalling in Bostrichidae infesting stored products is important because pheromones play a crucial role in mediating aggregation by the species in storages. The longevity of starved and unstarved Prostephanus truncatus (Horn) and Rhyzopertha dominica (Fabricius) were determined at 28+/-1 degrees C, 65+/-2% RH and L12:D12 cycle. Additionally, the effects of ageing on rate of pheromone emission were investigated in R. dominica by comparing emission rates of the aggregation pheromones Dominicalure-1 (DL1) and Dominicalure-2 (DL2) released by adult males ranging from 4, 8, 12, 24 and 48 weeks of age. Mean survival time of starved male and female P. truncatus was 8.6+/-0.6 and 9.1+/-0.4 days, respectively. Starved R. dominica males lived for 5.7+/-0.2 days, and females for 4.7+/-0.1 days. However, mean survival times were not significantly different for starved males vs. females of either species. Mean survival time of unstarved male and female P. truncatus was 27.5+/-2.0 and 18.0+/-3.3 weeks, respectively, and for unstarved male and female R. dominica was 26.1+/-2.8 and 16.7+/-2.9 weeks, respectively. Difference in mean survival times of unstarved males vs. females in both P. truncatus and R. dominica were significant. Between species, no significant difference was observed in mean survival time between unstarved males of P. truncatus or R. dominica, nor between females of both species. Rate of pheromone emission in R. dominica was higher when the insects were relatively young (4, 8 and 12 weeks old), but declined by almost 55% in treatments where the insect were at about 24 or 48 weeks old, suggesting that recruitment potential of R. dominica might reduce substantially as the insects age"
Keywords:		Age Factors Animals Coleoptera/*physiology Food Parasitology Longevity/*physiology Pheromones/*metabolism Starvation/physiopathology;
Notes:		"MedlineEdde, P A Phillips, T W eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2007/01/05 Bull Entomol Res. 2006 Dec; 96(6):547-54. doi: 10.1017/ber2006456"