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Laboratory virulence of entomopathogenic nematodes to the sweetpotato whitefly, Bemisia tabaci

Yinping Li
Yinping Li
, 
George N. Mbata
George N. Mbata
 und 
David I. Shapiro-Ilan
David I. Shapiro-Ilan
   | 26. Nov. 2021
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Online veröffentlicht: 26. Nov. 2021
Seitenbereich: 1 - 8
DOI: https://doi.org/10.21307/jofnem-2021-096
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© 2021 Yinping Li et al., published by Sciendo.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1:

Mortality of Bemisia tabaci Middle East-Asia Minor 1 (MEAM1) nymphs (%) on snap bean leaves caused by the ten treatments at 3 days post-inoculation in the first virulence experiment. Treatments: Hb = Heterorhabditis bacteriophora (VS strain), Hi = H. indica (HOMl strain), Hg = H. georgiana (Kesha strain), Hf = H. floridensis (K22 strain), Sf = Steinernema feltiae (SN strain), Sc = S. carpocapsae (All strain), Sri = S. riobrave (355 strain), Sg = S. glaseri (VS strain), Sra = S. rarum (17C&E strain), CK = Water control. Different letters above bars indicate statistical significance (P < 0.05) among the treatments.
Mortality of Bemisia tabaci Middle East-Asia Minor 1 (MEAM1) nymphs (%) on snap bean leaves caused by the ten treatments at 3 days post-inoculation in the first virulence experiment. Treatments: Hb = Heterorhabditis bacteriophora (VS strain), Hi = H. indica (HOMl strain), Hg = H. georgiana (Kesha strain), Hf = H. floridensis (K22 strain), Sf = Steinernema feltiae (SN strain), Sc = S. carpocapsae (All strain), Sri = S. riobrave (355 strain), Sg = S. glaseri (VS strain), Sra = S. rarum (17C&E strain), CK = Water control. Different letters above bars indicate statistical significance (P < 0.05) among the treatments.

Figure 2:

Mortality of Bemisia tabaci Middle East-Asia Minor 1 (MEAM1) nymphs (%) caused by the five treatments at 3 days post-inoculation in the second virulence experiment. Treatments: Hb = Heterorhabditis bacteriophora (VS strain), Hf = H. floridensis (K22 strain), Sc = Steinernema carpocapsae (All strain), Sra = S. rarum (17C&E strain), CK = Water control. Different letters above bars indicate statistical significance (P < 0.05) among the treatments.
Mortality of Bemisia tabaci Middle East-Asia Minor 1 (MEAM1) nymphs (%) caused by the five treatments at 3 days post-inoculation in the second virulence experiment. Treatments: Hb = Heterorhabditis bacteriophora (VS strain), Hf = H. floridensis (K22 strain), Sc = Steinernema carpocapsae (All strain), Sra = S. rarum (17C&E strain), CK = Water control. Different letters above bars indicate statistical significance (P < 0.05) among the treatments.

Figure 3:

Mortality of Bemisia tabaci Middle East-Asia Minor 1 (MEAM1) nymphs (%) caused by the five treatments at 7 days post-inoculation in the second virulence experiment. Treatments: Hb = Heterorhabditis bacteriophora (VS strain), Hf = H. floridensis (K22 strain), Sc = Steinernema carpocapsae (All strain), Sra = S. rarum (17C&E strain), CK = Water control. Different letters above bars indicate statistical significance (P < 0.05) among the treatments.
Mortality of Bemisia tabaci Middle East-Asia Minor 1 (MEAM1) nymphs (%) caused by the five treatments at 7 days post-inoculation in the second virulence experiment. Treatments: Hb = Heterorhabditis bacteriophora (VS strain), Hf = H. floridensis (K22 strain), Sc = Steinernema carpocapsae (All strain), Sra = S. rarum (17C&E strain), CK = Water control. Different letters above bars indicate statistical significance (P < 0.05) among the treatments.

Three-way Analysis of Variance (ANOVA) table for the second virulence experiment at 3 days post-inoculation (dpi) and 7 dpi.

Effect 3 dpi 7 dpi
F df P F df P
Trial 19.86 2, 6 0.0023 0.00 1, 4 0.99
Treatment 3.48 4, 24 0.022 10.13 4, 36 <0.0001
Host plant 0.00 1, 30 0.99 0.00 1, 36 0.99
Trial × Host plant 0.05 2, 30 0.95 0.00 1, 36 0.99
Trial × Treatment 0.75 8, 24 0.65 2.05 4, 36 0.11
Treatment × Host plant 1.29 4, 30 0.30 2.14 4, 36 0.10
Trial × Host plant × Treatment 1.16 8, 30 0.35 1.61 4, 36 0.19
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Sprache:
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