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Titolo:
EFFECTS OF THE ANTIFEEDANT POLYGODIAL ON PLANT PENETRATION BY APHIDS,ASSESSED BY VIDEO AND ELECTRICAL RECORDING
Autore:
POWELL G; HARDIE J; PICKETT JA;
Indirizzi:
UNIV LONDON IMPERIAL COLL SCI & TECHNOL,AFRC,LINKED RES GRP APHID BIOL ASCOT SL5 7PY BERKS ENGLAND AFRC,INST ARABLE CROPS RES,ROTHAMSTED EXPTL STN HARPENDEN AL5 2JQ HERTS ENGLAND
Titolo Testata:
Entomologia experimentalis et applicata
fascicolo: 2, volume: 68, anno: 1993,
pagine: 193 - 200
SICI:
0013-8703(1993)68:2<193:EOTAPO>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
MYZUS-PERSICAE; TRANSMISSION; VIRUSES; FLIGHT;
Keywords:
ANTIFEEDANT; APHIDS; ELECTRICAL RECORDING; MYZUS-PERSICAE; POLYGODIAL; VIDEO;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
G. Powell et al., "EFFECTS OF THE ANTIFEEDANT POLYGODIAL ON PLANT PENETRATION BY APHIDS,ASSESSED BY VIDEO AND ELECTRICAL RECORDING", Entomologia experimentalis et applicata, 68(2), 1993, pp. 193-200

Abstract

Adult apterous Myzus persicae (Sulz.) discriminated within 2 min between mature Chinese cabbage (Brassica pekinensis L.) leaf halves treated with (+/-)-polygodial solution and solvent alone, and walked off leaf areas treated with polygodial faster than off the solvent-treated areas. However, when aphids were attached to a fine gold wire and styletpenetration of cabbage leaves was recorded electrically, polygodial treatment did not affect the number or duration of electrically-recorded penetrations, time taken to initiate a first penetration, or total penetration time. As the tethering of aphids causes behavioural restrictions which may negate the response to polygodial, indications of stylet penetration by freely-moving insects were sought. Simultaneous electrical recording and video monitoring showed that stylet penetration duration could be accurately inferred from antennal and body movements,enabling assessment of penetration times without attachment to the wire tether. When freely-moving M. persicae were video recorded during 15 min access to cabbage seedlings, polygodial treatment again had no apparent effect on stylet penetration. However, when aphids were presented with a choice of polygodial- and solvent-treated sides of floatingmature cabbage leaf discs, video recordings revealed that the insectsspent less time and made fewer penetrations on the polygodial-treatedside. In addition to this rapid repellent effect, prolonged exposure to polygodial also produced behavioural changes. After being held for 24 h on polygodial-treated leaves or green paper prior to behavioural examination, aphids penetrated seedlings fewer times but for longer periods. The relevance of the results to virus transmission studies is discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 09:04:02