Sustained-flight tunnel responses of male lightbrown apple moth to synthetic sex pheromone

AbstractA serious sugarcane pest, Dasylepida ishigakiensis, remains in the soil during most of its life cycle except for a short period for mating. Mating disruption by an artificial release of the sex pheromone (R)-2-butanol (R2B), therefore, may be a feasible method to control this pest. We examined the effects of artificial release of R2B and its related compounds, (S)-2-butanol (S2B) and the racemic 2-butanol (rac-2B), on the mating success of this beetle both in the laboratory and in the field. In flight tunnel experiments, almost all males orientated towards a R2B-releasing source and 40% of them landed on the source. When the atmosphere was permeated with R2B, the frequency of males landing on the model was significantly reduced. Both rac-2B and S2B were less effective, but substantial reduction in landing success by males was achieved at higher rac-2B concentrations. R2B released from polyethylene dispensers in sugarcane plots greatly reduced not only the proportion of females mated with males but also the number of males caught by R2B-baited traps, indicating that male mate-searching behaviour was strongly affected by the released R2B. Similar inhibitory effects on male behaviour were also observed when tube- or rope-type dispensers released high rac-2B concentrations in the field. These results indicate that it would be highly possible to control D. ishigakiensis through the disruption of the sexual communication by releasing either synthetic R2B or rac-2B.

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

Bulletin of Entomological Research ◽

10.1017/s0007485300006684 ◽

1976 ◽

Vol 66 (2) ◽

pp. 279-300 ◽

Cited By ~ 10

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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The effects of source dosage, flight altitude, wind speed, and ground pattern on the sex pheromone‐mediated flight manoeuvres of male lightbrown apple moth,Epiphyas postvittana(Walker)

New Zealand Journal of Zoology ◽

10.1080/03014223.1999.9518181 ◽

1999 ◽

Vol 26 (2) ◽

pp. 97-104 ◽

Cited By ~ 11

Author(s):

S. P. Foster ◽

A. J. Howard

Keyword(s):

Wind Speed ◽

Sex Pheromone ◽

Epiphyas Postvittana ◽

Flight Altitude ◽

Ground Pattern ◽

Lightbrown Apple Moth

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Enantioselective Synthesis of the Sex Pheromone of Lichen Moth, Miltochrista calamine, and Its Diastereomer

Synlett ◽

10.1055/s-0040-1719835 ◽

2021 ◽

Author(s):

Jiangchun Zhong ◽

Gucheng Yuan ◽

Jiawei Liu ◽

Shihang Yu ◽

Xueyang Wang ◽

...

Keyword(s):

Sex Pheromone ◽

Enantioselective Synthesis ◽

Synthetic Approach ◽

Chiral Auxiliaries ◽

Synthetic Sex Pheromone ◽

Key Steps

AbstractThe synthesis of a Miltochrista calamine sex pheromone and its diastereomer has been developed. The key steps of the synthetic approach involved Evans’ chiral auxiliaries and the addition of alkyne to aldehyde, which were firstly applied to prepare this sex pheromone and its diastereomer. The synthetic sex pheromone could be used to trap insects and study physiological and ecological questions of the lichen moth.

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