Differences in sex pheromone communication systems of closely related species:Spodoptera latifascia (walker) andS. descoinsi lalannecassou & silvain (Lepidoptera: Noctuidae)

1995 ◽  
Vol 21 (5) ◽  
pp. 641-660 ◽  
Author(s):  
Laurence Monti ◽  
Bernard Lalanne-Cassou ◽  
Philippe Lucas ◽  
Christian Malosse ◽  
Jean-François Silvain
Keyword(s):  
Sex Pheromone ◽  
Communication Systems ◽  
Pheromone Communication ◽  
Lepidoptera Noctuidae

Mating behaviour and fecundity of the red bollworm Diparopsis castanea Hmps. (Lepidoptera Noctuidae)

1976 ◽  
Vol 66 (1) ◽  
pp. 145-158 ◽  
Author(s):  
R. J. Marks
Keyword(s):  
Sex Pheromone ◽  
Multiple Mating ◽  
Mating Behaviour ◽  
Control Programme ◽  
Pheromone Communication ◽  
Potential Fecundity ◽  
Sex Pheromone Traps ◽  
Lepidoptera Noctuidae ◽  
Number Of Males ◽  
Egg Fertility

AbstractExperiments in Malawi showed that the (log) number of males of Diparopsis castanea Hmps. attracted to sex pheromone traps was linearly related to the (log) number of virgin females used as attractant. Virgins remained sexually attractive for up to 31 days but were maximally attractive three nights following emergence; 97·7% of light-trapped females were mated, a small proportion having mated four times. Numbers of matings were directly correlated with temperature at 22.00 h, but relative humidity had little effect. Mean fecundity of mated females was 152 ± 10·3 eggs, multiple mating influencing egg fertility rather than total oviposition. Potential fecundity was linearly related to body weight on emergence. Peak oviposition of unfertilised eggs by virgins occurred at about nine nights following emergence. Of emerging females 2% were barren. Only 1·4% of females mated twice in one night when confined outdoors with males, and there was no difference in the abilities of newly emerged males or males up to four days old to mate with newly emerged females or females up to four days old. Although outdoors males mated on average 0·8 times per night throughout their life, and were capable of mating twice per night, mating propensity of males under laboratory conditions was much lower. Males responded to female sex pheromone throughout the calling period of the female, individuals completing up to 143 orientations during a night without the occurrence of lasting physiological habituation to the pheromone. The importance of this in any control programme aimed at disrupting pheromone communication between the sexes is discussed.

Development and Pheromone Communication Systems in Hybrids of Agrotis ipsilon and Agrotis segetum (Lepidoptera: Noctuidae)

1997 ◽  
Vol 23 (1) ◽  
pp. 191-209 ◽  
Author(s):  
Christophe Gadenne ◽  
Jean-Francois Picimbon ◽  
Jean-Marc Becard ◽  
Bernard Lalanne-Cassou ◽  
Michel Renou
Keyword(s):  
Communication Systems ◽  
Agrotis Segetum ◽  
Agrotis Ipsilon ◽  
Pheromone Communication ◽  
Lepidoptera Noctuidae

Attraction of Heliothis belladonna (Henry and Edwards) to the Sex Pheromone of the Corn Earworm Moth, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae)

2006 ◽  
Vol 79 (4) ◽  
pp. 303-308 ◽  
Author(s):  
Peter J. Landolt ◽  
Constance L. Smithhisler ◽  
Richard S. Zack ◽  
Leonardo Camelo
Keyword(s):  
Sex Pheromone ◽  
Helicoverpa Zea ◽  
Corn Earworm ◽  
Lepidoptera Noctuidae

The influence of behaviour modifying chemicals on mating success of the red bollworm Diparopsis castanea Hmps. (Lepidoptera, Noctuidae) in Malawi

1976 ◽  
Vol 66 (2) ◽  
pp. 279-300 ◽  
Author(s):  
R. J. Marks
Keyword(s):  
Sex Pheromone ◽  
Sexual Attraction ◽  
Practical Method ◽  
Pheromone Trap ◽  
Cotton Field ◽  
Field Cage ◽  
Synthetic Sex Pheromone ◽  
Trap Catches ◽  
First Time ◽  
Lepidoptera Noctuidae

AbstractThe synthetic sex pheromone (dicastalure) of the red bollworm of cotton, Diparopsis castanea Hmps., in Central and Southern Africa, and an inhibitor of male sexual attraction (trans-9-dodecenyl acetate,=IIA), were used in an enclosed 0·2 ha cotton field-cage to reduce successful female matings. Over one month dicastalure at 21·0 and 42·3 g/ha produced average reductions in mating of 47·9% and 72·5% respectively and 37·9 g IIA/ha produced an overall reduction in mating of 71·5%, or 79·5% in released moth populations, over the same period. The proportion of virgin females present in disruption situations was significantly greater than in untreated populations and was density-independent for moth populations of up to 2 200/ha. The proportion of fertile eggs in disruption situations was correspondingly reduced to 30·2% from an average of 67·9% in control cycles. Reduction in sex pheromone trap catches is an unsatisfactory indicator of the extent to which males are prevented from inseminating females and considerably over-estimates the true degree of disruption. This is the first time that a naturally occurring inhibitor has been used successfully to disrupt mating in a field population of insects and it indicates the potential of the method for the control of high density pest populations in cotton. However, use of polyethylene dispensing mechanisms similar to those used in the field-cage disruption experiments would be unsuitable as a practical method of dispensing behaviour modifying chemicals and it is suggested that, for suitably controlled release of such chemicals, currently available microencapsulation technology offers the best prospects.

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