Pathogenicity of Aschersonia spp. against whiteflies Bemisia argentifolii and Trialeurodes vaporariorum

E.T.M. Meekes, J.J. Fransen, J.C. van Lenteren

Research output: Contribution to journalArticleAcademicpeer-review

33 Citations (Scopus)

Abstract

Entomopathogenic fungi of the genus Aschersonia are specific for whitefly and scale insects. They can be used as biological control agents against silverleaf whitefly, Bemisia argentifolii and greenhouse whitefly, Trialeurodes vaporariorum. Forty-four isolates of Aschersonia spp. were tested for their ability to sporulate and germinate on semi-artificial media and to infect insect hosts. Seven isolates sporulated poorly (less than 1 x 10(7) conidia/dry weight) and 10 were not able to infect either of the whitefly species. Several isolates were able to produce capilliconidia. Infection level was not correlated with germination on water agar. After a selection based on spore production and infection, virulence of 31 isolates was evaluated on third instar nymphs of both whitefly species on poinsettia (Euphorbia pulcherrima). Whitefly infection levels varied between 2 and 70%, and infection percentages of B. argentifolii correlated with that of T vaporariorum. However, mortality was higher for T vaporariorum than for B. argentifolii, as a result of a higher 'mortality due to unknown causes.' Several isolates, among which unidentified species of Aschersonia originating from Thailand and Malaysia, A. aleyrodis from Colombia, and A. placenta from India showed high spore production on semi-artificial medium and high infection levels of both whitefly species. (C) 2002 Elsevier Science (USA). All rights reserved.
Original languageEnglish
Pages (from-to)1-11
JournalJournal of Invertebrate Pathology
Volume81
DOIs
Publication statusPublished - 2002

Fingerprint

Aschersonia
Trialeurodes vaporariorum
whitefly
Bemisia argentifolii
pathogenicity
Aleyrodidae
Euphorbia pulcherrima
infection
sporulation
Aschersonia aleyrodis
spores
insect
entomopathogenic fungi
mortality
scale insects
Colombia
Malaysia
conidia
nymphs
biological control agents

Keywords

  • parasitoid encarsia-formosa
  • entomopathogenic fungi
  • biological-control
  • aleyrodis
  • survival
  • germination
  • greenhouses
  • tabaci

Cite this

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title = "Pathogenicity of Aschersonia spp. against whiteflies Bemisia argentifolii and Trialeurodes vaporariorum",
abstract = "Entomopathogenic fungi of the genus Aschersonia are specific for whitefly and scale insects. They can be used as biological control agents against silverleaf whitefly, Bemisia argentifolii and greenhouse whitefly, Trialeurodes vaporariorum. Forty-four isolates of Aschersonia spp. were tested for their ability to sporulate and germinate on semi-artificial media and to infect insect hosts. Seven isolates sporulated poorly (less than 1 x 10(7) conidia/dry weight) and 10 were not able to infect either of the whitefly species. Several isolates were able to produce capilliconidia. Infection level was not correlated with germination on water agar. After a selection based on spore production and infection, virulence of 31 isolates was evaluated on third instar nymphs of both whitefly species on poinsettia (Euphorbia pulcherrima). Whitefly infection levels varied between 2 and 70{\%}, and infection percentages of B. argentifolii correlated with that of T vaporariorum. However, mortality was higher for T vaporariorum than for B. argentifolii, as a result of a higher 'mortality due to unknown causes.' Several isolates, among which unidentified species of Aschersonia originating from Thailand and Malaysia, A. aleyrodis from Colombia, and A. placenta from India showed high spore production on semi-artificial medium and high infection levels of both whitefly species. (C) 2002 Elsevier Science (USA). All rights reserved.",
keywords = "parasitoid encarsia-formosa, entomopathogenic fungi, biological-control, aleyrodis, survival, germination, greenhouses, tabaci",
author = "E.T.M. Meekes and J.J. Fransen and {van Lenteren}, J.C.",
year = "2002",
doi = "10.1016/S0022-2011(02)00150-7",
language = "English",
volume = "81",
pages = "1--11",
journal = "Journal of Invertebrate Pathology",
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}

Pathogenicity of Aschersonia spp. against whiteflies Bemisia argentifolii and Trialeurodes vaporariorum. / Meekes, E.T.M.; Fransen, J.J.; van Lenteren, J.C.

In: Journal of Invertebrate Pathology, Vol. 81, 2002, p. 1-11.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Pathogenicity of Aschersonia spp. against whiteflies Bemisia argentifolii and Trialeurodes vaporariorum

AU - Meekes, E.T.M.

AU - Fransen, J.J.

AU - van Lenteren, J.C.

PY - 2002

Y1 - 2002

N2 - Entomopathogenic fungi of the genus Aschersonia are specific for whitefly and scale insects. They can be used as biological control agents against silverleaf whitefly, Bemisia argentifolii and greenhouse whitefly, Trialeurodes vaporariorum. Forty-four isolates of Aschersonia spp. were tested for their ability to sporulate and germinate on semi-artificial media and to infect insect hosts. Seven isolates sporulated poorly (less than 1 x 10(7) conidia/dry weight) and 10 were not able to infect either of the whitefly species. Several isolates were able to produce capilliconidia. Infection level was not correlated with germination on water agar. After a selection based on spore production and infection, virulence of 31 isolates was evaluated on third instar nymphs of both whitefly species on poinsettia (Euphorbia pulcherrima). Whitefly infection levels varied between 2 and 70%, and infection percentages of B. argentifolii correlated with that of T vaporariorum. However, mortality was higher for T vaporariorum than for B. argentifolii, as a result of a higher 'mortality due to unknown causes.' Several isolates, among which unidentified species of Aschersonia originating from Thailand and Malaysia, A. aleyrodis from Colombia, and A. placenta from India showed high spore production on semi-artificial medium and high infection levels of both whitefly species. (C) 2002 Elsevier Science (USA). All rights reserved.

AB - Entomopathogenic fungi of the genus Aschersonia are specific for whitefly and scale insects. They can be used as biological control agents against silverleaf whitefly, Bemisia argentifolii and greenhouse whitefly, Trialeurodes vaporariorum. Forty-four isolates of Aschersonia spp. were tested for their ability to sporulate and germinate on semi-artificial media and to infect insect hosts. Seven isolates sporulated poorly (less than 1 x 10(7) conidia/dry weight) and 10 were not able to infect either of the whitefly species. Several isolates were able to produce capilliconidia. Infection level was not correlated with germination on water agar. After a selection based on spore production and infection, virulence of 31 isolates was evaluated on third instar nymphs of both whitefly species on poinsettia (Euphorbia pulcherrima). Whitefly infection levels varied between 2 and 70%, and infection percentages of B. argentifolii correlated with that of T vaporariorum. However, mortality was higher for T vaporariorum than for B. argentifolii, as a result of a higher 'mortality due to unknown causes.' Several isolates, among which unidentified species of Aschersonia originating from Thailand and Malaysia, A. aleyrodis from Colombia, and A. placenta from India showed high spore production on semi-artificial medium and high infection levels of both whitefly species. (C) 2002 Elsevier Science (USA). All rights reserved.

KW - parasitoid encarsia-formosa

KW - entomopathogenic fungi

KW - biological-control

KW - aleyrodis

KW - survival

KW - germination

KW - greenhouses

KW - tabaci

U2 - 10.1016/S0022-2011(02)00150-7

DO - 10.1016/S0022-2011(02)00150-7

M3 - Article

VL - 81

SP - 1

EP - 11

JO - Journal of Invertebrate Pathology

JF - Journal of Invertebrate Pathology

SN - 0022-2011

ER -