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Fitness costs associated with infections of secondary endosymbionts in the cassava whitefly species Bemisia tabaci
Year:
2018
Source of publication :
Journal of Pest Science
Authors :
Ghanim, Murad
;
.
Volume :
91
Co-Authors:

Ghosh, S.; Bouvaine, S.; Richardson, S. C.; Maruthi, M. N. 

Facilitators :
From page:
17
To page:
28
(
Total pages:
12
)
Abstract:

We investigated the dual effects of bacterial infections and diseased cassava plants on the fitness and biology of the Bemisia tabaci infesting cassava in Africa. Isofemale B. tabaci colonies of sub-Saharan Africa 1-subgroup 3 (SSA1-SG3), infected with two secondary endosymbiotic bacteria Arsenophonus and Rickettsia (AR+) and those free of AR infections (AR−), were compared for fitness parameters on healthy and East African cassava mosaic virus-Uganda variant (EACMV-UG)-infected cassava plants. The whitefly fecundity and nymph development was not affected by bacterial infections or the infection of cassava by the virus. However, emergence of adults from nymphs was 50 and 17% higher by AR− on healthy and virus-infected plants, respectively, than AR+ flies. Development time of adults also was 10 days longer in AR+ than AR−. The whiteflies were further compared for acquisition and retention of EACMV-UG. Higher proportion of AR− acquired (91.8%) and retained (87.6%) the virus than AR+ (71.8, 61.2%, respectively). Similarly, the AR− flies retained higher quantities of virus (~ninefold more) than AR+. These results indicated that bacteria-free whiteflies were superior and better transmitters of EACMV-UG, as they had higher adult emergence, quicker life cycle and better virus retention abilities than those infected with bacteria.

Note:
Related Files :
Arsenophonus
Bemisia tabaci
cassava
Fitness cost
pests
plant protection
Rickettsia
Virus retention
whitefly
Show More
Related Content
More details
DOI :
https://doi.org/10.1007/s10340-017-0910-8
Article number:
0
Affiliations:
Database:
Google Scholar
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
44970
Last updated date:
02/03/2022 17:27
Creation date:
13/11/2019 08:30
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Scientific Publication
Fitness costs associated with infections of secondary endosymbionts in the cassava whitefly species Bemisia tabaci
91

Ghosh, S.; Bouvaine, S.; Richardson, S. C.; Maruthi, M. N. 

Fitness costs associated with infections of secondary endosymbionts in the cassava whitefly species Bemisia tabaci

We investigated the dual effects of bacterial infections and diseased cassava plants on the fitness and biology of the Bemisia tabaci infesting cassava in Africa. Isofemale B. tabaci colonies of sub-Saharan Africa 1-subgroup 3 (SSA1-SG3), infected with two secondary endosymbiotic bacteria Arsenophonus and Rickettsia (AR+) and those free of AR infections (AR−), were compared for fitness parameters on healthy and East African cassava mosaic virus-Uganda variant (EACMV-UG)-infected cassava plants. The whitefly fecundity and nymph development was not affected by bacterial infections or the infection of cassava by the virus. However, emergence of adults from nymphs was 50 and 17% higher by AR− on healthy and virus-infected plants, respectively, than AR+ flies. Development time of adults also was 10 days longer in AR+ than AR−. The whiteflies were further compared for acquisition and retention of EACMV-UG. Higher proportion of AR− acquired (91.8%) and retained (87.6%) the virus than AR+ (71.8, 61.2%, respectively). Similarly, the AR− flies retained higher quantities of virus (~ninefold more) than AR+. These results indicated that bacteria-free whiteflies were superior and better transmitters of EACMV-UG, as they had higher adult emergence, quicker life cycle and better virus retention abilities than those infected with bacteria.

Scientific Publication
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