scholarly journals Effects of host plant and genetic background on the fitness costs of resistance to Bacillus thuringiensis

Heredity ◽  
2010 ◽  
Vol 106 (2) ◽  
pp. 281-288 ◽  
Author(s):  
B Raymond ◽  
D J Wright ◽  
M B Bonsall
Keyword(s):  
Bacillus Thuringiensis ◽  
Host Plant ◽  
Genetic Background ◽  
Fitness Costs

scholarly journals Host plant and population determine the fitness costs of resistance to Bacillus thuringiensis

2006 ◽  
Vol 3 (1) ◽  
pp. 83-86 ◽  
Author(s):  
Ben Raymond ◽  
Ali H Sayyed ◽  
Denis J Wright
Keyword(s):  
Bacillus Thuringiensis ◽  
Host Plant ◽  
Environmental Quality ◽  
Species Interactions ◽  
Diamondback Moth ◽  
Larval Survival ◽  
Plant Quality ◽  
Relative Fitness ◽  
Fitness Costs ◽  
Fitness Parameters

Novel adaptations often cause pleiotropic reductions in fitness. Under optimal conditions individual organisms may be able to compensate for, or reduce, these fitness costs. Declining environmental quality may therefore lead to larger costs. We investigated whether reduced plant quality would increase the fitness costs associated with resistance to Bacillus thuringiensis in two populations of the diamondback moth Plutella xylostella . We also measured the rate of decline in resistance on two host-plant ( Brassica ) species for one insect population (Karak). Population×plant species interactions determined the fitness costs in this study. Poor plant quality increased the fitness costs in terms of development time for both populations. However, fitness costs seen in larval survival did not always increase as plant quality declined. Both the fitness and the stability experiment indicated that fitness costs were higher on the most suitable plant for one population. Theoretically, if the fitness cost of a mutation interacts additively with environmental factors, the relative fitness of resistant insects will decrease with environmental quality. However, multiplicative costs do not necessarily increase with declining quality and may be harder to detect when fitness parameters are more subject to variation in poorer environments.

Effects of Four Nematode Species on Fitness Costs of Pink Bollworm Resistance to Bacillus thuringiensis Toxin Cry1Ac

2010 ◽  
Vol 103 (5) ◽  
pp. 1821-1831 ◽  
Author(s):  
Eugene R. Hannon ◽  
Mark S. Sisterson ◽  
S. Patricia Stock ◽  
Yves Carrière ◽  
Bruce E. Tabashnik ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Nematode Species ◽  
Pink Bollworm ◽  
Fitness Costs ◽  
Bacillus Thuringiensis Toxin

Cadherin-Based Resistance to Bacillus thuringiensis Cotton in Hybrid Strains of Pink Bollworm: Fitness Costs and Incomplete Resistance

2006 ◽  
Vol 99 (6) ◽  
pp. 1925-1935 ◽  
Author(s):  
Yves Carrière ◽  
Christa Ellers-Kirk ◽  
Robert W. Biggs ◽  
Megan E. Nyboer ◽  
Gopalan C. Unnithan ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Pink Bollworm ◽  
Fitness Costs ◽  
Incomplete Resistance

Fitness costs of sublethal exposure to Bacillus thuringiensis in Helicoverpa armigera : a carryover study on offspring

2012 ◽  
Vol 137 (7) ◽  
pp. 540-549 ◽  
Author(s):  
A. Sedaratian ◽  
Y. Fathipour ◽  
R. Talaei-Hassanloui ◽  
J. L. Jurat-Fuentes
Keyword(s):  
Bacillus Thuringiensis ◽  
Helicoverpa Armigera ◽  
Fitness Costs ◽  
Sublethal Exposure ◽  
Helicoverpa Armígera
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