« Previous AbstractTwo-phase anaerobic co-digestion of olive mill wastes in semi-continuous digesters at mesophilic temperature    Next AbstractProteomic response of the phytopathogen Phyllosticta citricarpa to antimicrobial volatile organic compounds from Saccharomyces cerevisiae »

J Chem Ecol

Title:		"Sesamia calamistis calling behavior and its role in host finding of egg parasitoids Telenomus busseolae, telenomus isis, and Lathromeris ovicida"
Author(s):		Fiaboe MK; Chabi-Olaye A; Gounou S; Smith H; Borgemeister C; Schulthess F;
Address:		"Plant Health Management Division, International Institute of Tropical Agriculture, Biological Control Center for Africa, B.P. 08-0932 Tri postal Cotonou, Republic of Benin"
Journal Title:		J Chem Ecol
Year:		2003
Volume:		29
Issue:		4
Page Number:		921 - 929
DOI:		10.1023/a:1022935917260
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"In the Republic of Benin, the African pink stem borer Sesamia calamistis Hampson is kept under control by the two scelionid egg parasitoids Telenomus busseolae (Gahan) and T. isis (Polaszek). A third species, the trichogrammatid Lathromeris ovicida Risbec, although commonly obtained from egg batches, is of low importance. High egg and egg batch parasitism by Telenomus spp. at low host densities suggests excellent host-finding capacity. Previously it was hypothesized that pheromones produced by calling S. calamistis virgins play an important role in attracting the parasitoids to the area where oviposition is likely to occur. Thus, after determining the effect of age (1-4 days) on the calling rhythm of S. calamistis, 1-day-old virgin females were chosen to investigate the response of the parasitoids to calling and noncalling females and two empty controls, in a four-arm olfactometer. The results showed that calling started earliest and lasted longest with 1-day-old females, but was similar for 2- to 4-days-old females. The percentage of females calling was higher in early than latter scotophases. The highest percentage of active females was obtained between 8 and 9 hr after the beginning of the first scotophase. All three parasitoid species responded to calling females, while there were no differences between noncalling females and the empty controls. The response pattern was similar for the two Telenomus spp. but considerably weaker for L. ovicida, reflecting differing host specificity of the three parasitoid species"
Keywords:		Age Factors Animals Female *Hymenoptera Moths/*parasitology/*physiology Movement Ovum/parasitology Population Dynamics Sex Attractants/*pharmacology;
Notes:		"MedlineFiaboe, M K Chabi-Olaye, A Gounou, S Smith, H Borgemeister, C Schulthess, F eng Research Support, Non-U.S. Gov't 2003/05/31 J Chem Ecol. 2003 Apr; 29(4):921-9. doi: 10.1023/a:1022935917260"