Journal of Economic Entomology (2016) 109, 2249-2258
Kevin Yu-Bing Huang, Remzi Atlihan, Ayhan Gökçe, Joyce Yu-Bing Huang and Hsin Chi (2016)
Demographic analysis of sex ratio on population growth of Bactrocera dorsalis (Diptera: Tephritidae) with discussion of control efficacy using male annihilation
Journal of Economic Entomology 109 (6), 2249-2258
Abstract: The life table data for the oriental fruit fly, Bactrocera dorsalis (Hendel), at different adult sex ratios (1female: 1male, 1female: 50males, 50females: 1male free-choice mating, and 50females: 1male no-choice mating) were collected to determine the effects of sex-ratio manipulation on current pest control procedures. At 1female: 1male, females mated, on average, 2.3 times during their lifetime with a mean fecundity (F) of 1,122 eggs. The net reproductive rate (R0), intrinsic rate of increase (r), finite rate (λ), and mean generation time (T) were 561.0 offspring, 0.1693 d- 1, 1.1844 d- 1, and 37.4 d, respectively. At 50females: 1male free-choice mating, males mated 46.7 times during their lifetime, while at 50females: 1male no-choice mating, males mated on average 50 times during their lifetime, and all females mating only once in both treatments. The values for F, r, and λ were significantly lower for both 50females: 1male treatments than those in the 1female: 1male group; the R0 values, however, were either equal to or even higher than those in the 1female: 1male treatment. In the male-biased sex ratio (1female: 50males), fecundity was the highest (1,610 eggs) and female average life span the longest (166 d), while the R0 was the lowest (31.6 offspring) among all treatments. Population projections showed that even at a sex ratio of 50females: 1male, B. dorsalis could still produce a large number of offspring. These findings demonstrate that management strategies for controlling B. dorsalis could be properly evaluated by using demographic methods. Because female annihilation appears to be a more effective control strategy, it should be considered as a viable alternative.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Hsin Chi, Remzi Atlihan, Ayhan Gökçe
Research topic(s) for pests/diseases/weeds:
control - general
general biology - morphology - evolution
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Bactrocera dorsalis |
