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Titolo:
Impact of entomopathogenic nematodes on different soil-dwelling stages of western flower thrips, Frankliniella occidentalis (Thysanoptera : Thripidae), in the laboratory and under semi-field conditions
Autore:
Ebssa, L; Borgemeister, C; Berndt, O; Poehling, HM;
Indirizzi:
Univ Hannover, Inst Plant Dis & Plant Protect, D-30419 Hannover, Germany Univ Hannover Hannover Germany D-30419 rotect, D-30419 Hannover, Germany
Titolo Testata:
BIOCONTROL SCIENCE AND TECHNOLOGY
fascicolo: 4, volume: 11, anno: 2001,
pagine: 515 - 525
SICI:
0958-3157(200108)11:4<515:IOENOD>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
STRAINS;
Keywords:
biological control; entomopathogenic nematodes; Frankliniella occidentalis; Heterorhabditis bacteriophora; mixed population; soil-dwelling stages; Steinernema carpocapsae; Steinernema feltiae; western flower thrips;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Borgemeister, C Univ Hannover, Inst Plant Dis & Plant Protect, Herrenhauser Str 2, D-30419Hannover, Germany Univ Hannover Herrenhauser Str 2 Hannover Germany D-30419
Citazione:
L. Ebssa et al., "Impact of entomopathogenic nematodes on different soil-dwelling stages of western flower thrips, Frankliniella occidentalis (Thysanoptera : Thripidae), in the laboratory and under semi-field conditions", BIO SCI TEC, 11(4), 2001, pp. 515-525

Abstract

The impact of entomopathogenic nematodes (EPN) on mortality of soil-dwelling stages of western flower thrips (WFT), Frankliniella occidentalis (Thysanoptera: Thripidae) with different insect stage combinations was studied inthe laboratory and under semi-field conditions. In laboratory experiments,the efficacy of Steinernema feltiae strain Sylt (Rhabditida : Steinernematidae) at a concentration of 400 infective juveniles (IJs) cm(-2) was testedagainst different proportions of soil-dwelling stages of WFT, i.e. late second instar larvae (L2), prepupae and pupae. Soil was used as the testing medium. S. feltiae significantly affected the mortality of all soil-dwellinglife stages of WFT at all tested insect stage combinations. The proportionof late L2 in the population negatively correlated to EPN-induced mortality. WFT prepupa and pupa were similarly susceptible to S. feltiae and their proportion in the population did not affect the EPN-induced mortality underlaboratory conditions. The highest mortality (80%) was recorded when the population consisted only of prepupae and/or pupae. In the semi-field study,the impact of S. feltiae, S. carpocapsae strain DD136 and Heterorhabditis bacteriophora strain HK3 (Rhabditida : Heterorhabditidae) (H. bacteriophora) at concentrations of 400 and 1000 IJs cm(-2) was evaluated against WFT reared on green beans, Phaseolus vulgaris L., as host plant in pot experiments in a controlled climate chamber. All tested EPN strains at both dose rates significantly reduced the WFT populations. Up to 70% reduction of the WFTpopulation was obtained at the higher EPN concentration.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 00:00:57