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EFFECTS OF CONTACT DURATION OF 0.5% THIOTEPA ON THE ADULT VIVIPARAE AND SUBSEQUENT GENERATIONS OF THE PEA APHID, ACYRTHOSIPHON PISUM (HOMOPTERA: APHIDIDAE)

Published online by Cambridge University Press:  31 May 2012

M. L. Sharma ,
L. M. Thériault  and
A. Gareau
M. L. Sharma
Affiliation:
Département de biologie, Faculté des Sciences, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1
L. M. Thériault
Affiliation:
Département de biologie, Faculté des Sciences, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1
A. Gareau
Affiliation:
Département de biologie, Faculté des Sciences, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1
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Extract

The compound tris (1-aziridinyl) phosphine sulphide, known by the trivial name thiotepa, has been tested against few aphids. Considerable reduction in fecundity occurred due to thiotepa treatment of the cabbage aphid, Brevicoryne brassicae (L.) (Bonnemaison 1966). In 0.3% thiotepa-treated Aphis fabae Scop. a 90% decrease in reproductive capacity was observed by Steffan and Stüben (1976). Sharma and Thériault (1980) tested 0.5% thiotepa on various nymphal instars of the pea aphid, Acyrthosiphon pisum (Harris), and observed up to 83% decrease in fecundity of those treated in first and second instars. The third and fourth instar aphids were much less influenced by thiotepa. The effects of thiotepa on the adult viviparae of the pea aphid are unknown and nothing has been recorded on the transmissibility of thiotepa-caused sterility to progeny. Further to the results of Sharma and Thériault (1980) this paper describes the effects of two contact periods with 0.5% thiotepa on the adult viviparae of A. pisum and delayed effects on subsequent generations.

Type
Articles
Information
The Canadian Entomologist , Volume 112 , Issue 12 , 01 December 1980 , pp. 1315 - 1316
Copyright
Copyright © Entomological Society of Canada 1980

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References

Bonnemaison, L. 1966. Essais de substances chimiostérilisantes. I. Action sur divers Homoptères et Coléoptères. Phytiatrie – Phytopharmacie 15: 59–74.Google Scholar
Sharma, M. L., Larrivée, J. M., and Thériault, L. M.. 1973. Effets de la photopériode et des températures moyennes de 15°C sur la fécondité et la production des sexués chez le puceron du pois, Acyrthosiphon pisum (Aphididae: Homoptera). Can. Ent. 105: 947–956.CrossRefGoogle Scholar
Sharma, M. L. and Thériault, L. M.. 1980. Effects of the chemosterilant thiotepa on the pea aphid, Acyrthosiphon pisum (Homoptera: Aphididae). Can. Ent. 112: 103–105.CrossRefGoogle Scholar
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