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Efficacy of entomopathogenic nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) against the chive gnat, Bradysia odoriphaga

(2013) JOURNAL OF PEST SCIENCE. 86(3). p.551-561
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Abstract
Chive gnat, Bradysia odoriphaga Yang & Zhang (Diptera: Sciaridae), is the most serious pest of Chinese chive, Allium tuberosum. The present study aimed at determining the biocontrol potential of different indigenous entomopathogenic nematode (EPN) isolates for the management of chive gnat in China. The virulence of 145 EPN isolates belonging to 13 species against B. odoriphaga was evaluated in the laboratory, and then the most promising isolates (Steinernema ceratophorum HQA-87; S. hebeiense JY-82; S. feltiae JY-90, JY-17; S. litorale HXY-68; Heterorhabditis indica ZZ-68; H. bacteriophora NY-63, HQ-94; and H. megidis LFS-10) were selected for further experiments. The mortality of fourth instar B. odoriphaga was significantly affected by nematode isolates and concentrations of infective juveniles (IJ). Third and fourth instars of B. odoriphaga were generally more susceptible to the nematodes than first and second instars and pupae. Pot experiments showed no differences in B. odoriphaga population reduction at 50 and 75 IJ/cm(2) of different isolates; the tested isolates caused a 78-94 % reduction of the chive gnat population at an application rate of 75 IJ/cm(2). In a field experiment, S. feltiae JY-90 generated the strongest pest suppression 14 days after EPN application, whereas after 28 days pest densities in the plots treated with S. feltiae JY-17 and S. hebeiense JY-82 were similar to those in plots treated with phoxim and yielded significant reductions of the B. odoriphaga populations. Our findings indicate that EPN may have good potential for use in the integrated management of B. odoriphaga populations in Chinese chive.
Keywords
PERSISTENCE, FLORICULTURE, SCIARIDAE, DIPTERA, BACTERIOPHORA, NORTH CHINA, FELTIAE, INSECTICIDE, POTTING MEDIUM, Virulence, Field experiment, FUNGUS GNAT, Steinernema, Sciaridae, Heterorhabditis, Bradysia odoriphaga, Diptera

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Citation

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Chicago
Ma, Juan, Shulong Chen, Maurice Moens, Richou Han, and Patrick De Clercq. 2013. “Efficacy of Entomopathogenic Nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) Against the Chive Gnat, Bradysia Odoriphaga.” Journal of Pest Science 86 (3): 551–561.
APA
Ma, Juan, Chen, S., Moens, M., Han, R., & De Clercq, P. (2013). Efficacy of entomopathogenic nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) against the chive gnat, Bradysia odoriphaga. JOURNAL OF PEST SCIENCE, 86(3), 551–561.
Vancouver
1.
Ma J, Chen S, Moens M, Han R, De Clercq P. Efficacy of entomopathogenic nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) against the chive gnat, Bradysia odoriphaga. JOURNAL OF PEST SCIENCE. 2013;86(3):551–61.
MLA
Ma, Juan, Shulong Chen, Maurice Moens, et al. “Efficacy of Entomopathogenic Nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) Against the Chive Gnat, Bradysia Odoriphaga.” JOURNAL OF PEST SCIENCE 86.3 (2013): 551–561. Print.
@article{4126252,
  abstract     = {Chive gnat, Bradysia odoriphaga Yang \& Zhang (Diptera: Sciaridae), is the most serious pest of Chinese chive, Allium tuberosum. The present study aimed at determining the biocontrol potential of different indigenous entomopathogenic nematode (EPN) isolates for the management of chive gnat in China. The virulence of 145 EPN isolates belonging to 13 species against B. odoriphaga was evaluated in the laboratory, and then the most promising isolates (Steinernema ceratophorum HQA-87; S. hebeiense JY-82; S. feltiae JY-90, JY-17; S. litorale HXY-68; Heterorhabditis indica ZZ-68; H. bacteriophora NY-63, HQ-94; and H. megidis LFS-10) were selected for further experiments. The mortality of fourth instar B. odoriphaga was significantly affected by nematode isolates and concentrations of infective juveniles (IJ). Third and fourth instars of B. odoriphaga were generally more susceptible to the nematodes than first and second instars and pupae. Pot experiments showed no differences in B. odoriphaga population reduction at 50 and 75 IJ/cm(2) of different isolates; the tested isolates caused a 78-94 \% reduction of the chive gnat population at an application rate of 75 IJ/cm(2). In a field experiment, S. feltiae JY-90 generated the strongest pest suppression 14 days after EPN application, whereas after 28 days pest densities in the plots treated with S. feltiae JY-17 and S. hebeiense JY-82 were similar to those in plots treated with phoxim and yielded significant reductions of the B. odoriphaga populations. Our findings indicate that EPN may have good potential for use in the integrated management of B. odoriphaga populations in Chinese chive.},
  author       = {Ma, Juan and Chen, Shulong and Moens, Maurice and Han, Richou and De Clercq, Patrick},
  issn         = {1612-4758},
  journal      = {JOURNAL OF PEST SCIENCE},
  language     = {eng},
  number       = {3},
  pages        = {551--561},
  title        = {Efficacy of entomopathogenic nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) against the chive gnat, Bradysia odoriphaga},
  url          = {http://dx.doi.org/10.1007/s10340-013-0497-7},
  volume       = {86},
  year         = {2013},
}

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