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Titolo:
SPATIAL CHANGES IN INVERTEBRATE PREDATION RATE IN WINTER-WHEAT FOLLOWING TREATMENT WITH DIMETHOATE
Autore:
DUFFIELD SJ; JEPSON PC; WRATTEN SD; SOTHERTON NW;
Indirizzi:
UNIV SOUTHAMPTON,SCH BIOL SCI,DEPT BIOL,BASSETT CRESCENT E SOUTHAMPTON SO16 7PX HANTS ENGLAND LINCOLN UNIV,DEPT ENTOMOL CANTERBURY NEW ZEALAND GAME CONSERVANCY TRUST FORDINGBRIDGE SP6 1EF HANTS ENGLAND
Titolo Testata:
Entomologia experimentalis et applicata
fascicolo: 1, volume: 78, anno: 1996,
pagine: 9 - 17
SICI:
0013-8703(1996)78:1<9:SCIIPR>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYPHAGOUS PREDATORS; BENEFICIAL ARTHROPODS; CEREAL APHIDS; SPIDERS; FIELD; PESTICIDES; POPULATION; RECOVERY;
Keywords:
ARTIFICIAL BAITS; DIMETHOATE; INDIRECT PESTICIDE EFFECTS; INVERTEBRATE PREDATION-RATE; WINTER WHEAT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
S.J. Duffield et al., "SPATIAL CHANGES IN INVERTEBRATE PREDATION RATE IN WINTER-WHEAT FOLLOWING TREATMENT WITH DIMETHOATE", Entomologia experimentalis et applicata, 78(1), 1996, pp. 9-17

Abstract

Experiments were conducted in 1989 and 1990 to investigate the mechanism underlying patterns of invertebrate population recovery in winter wheat following treatment with the broad-spectrum insecticide dimethoate. Predation of Drosophila pupae and artificially induced aphid populations was monitored at different distances into plots treated with dimethoate. An initial drop in predation was recorded in all positions following treatment. Predation rate then showed a period of recovery, which progressed from the edge to the centre of the treated plots. Thispattern of recovery corresponded to the numerical pattern of recoveryof the predatory invertebrate groups; Carabidae, Staphylinidae and Linyphiidae. The results are discussed in terms of mechanisms to explainobserved patterns of recovery of invertebrate 'prey' groups such as aphids. It is concluded that the ranking of pesticides by their toxicity alone would fail to take into account ecological processes that determine the different patterns of population change following treatment.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 09:15:55