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- W2318173789 abstract "Fitness traits of three Drosophila simulans strains infected by endocellular bacteria belonging to the genus Wolbachia have been compared with those of replicate stocks previously cured from the infection by an antibiotic treatment. The traits measured were development time, egg‐to‐adult viability, egg hatch, productivity, fecundity, and the number of functional ovarioles. Individuals of the first strain were bi‐infected by two Wolbachia variants, wHa and wNo. The second strain was infected by wHa, the third one by wNo. The Wolbachia studied here cause cytoplasmic incompatibility (CI), a high embryonic mortality (70% to > 90%) when an infected male is crossed with an uninfected female. Three generations after antibiotic treatment, we observed in all strains a significant drop in productivity in the cured stocks. This drop was not due to antibiotic toxicity and was associated with the loss of the Wolbachia. However the effect had disappeared in two of the three strains five generations after treatment, and could not be found in the third strain in a third measurement carried out 14 generations after treatment. The temporary nature of the productivity difference indicates that Wolbachia do not enhance productivity in infected strains. On the other hand, in all traits measured, our results show the absence of any negative effects of the Wolbachia on their host. This could be explained when considering Wolbachia evolution, as maternally transmitted parasites bear a strong selective pressure not to harm their female host. However, CI would allow the bacteria to be maintained even when harming the female. The apparent absence of deleterious effects caused by these Wolbachia might result from a trade‐off, where a relatively low bacteria density would advantage the Wolbachia by suppressing any deleterious effects on the female host, at the cost of a weaker maternal transmission rate of the infection." @default.
- W2318173789 created "2016-06-24" @default.
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- W2318173789 date "1997-02-01" @default.
- W2318173789 modified "2023-09-27" @default.
- W2318173789 title "<i>WOLBACHIA</i>INFECTION IN<i>DROSOPHILA SIMULANS</i>: DOES THE FEMALE HOST BEAR A PHYSIOLOGICAL COST?" @default.
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- W2318173789 doi "https://doi.org/10.1111/j.1558-5646.1997.tb02399.x" @default.
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