Bio 113P Lab 3: Phenotypic Effects of Wolbachia on the Reproductive Behaviors and Outcomes of Nason

N asoni a females in order to lay their eggs must

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Unformatted text preview: asoni a females, in order to lay their eggs, must find a pupating fly to act as a host: once located, the females will drill a hole through the puparium wall, and inject venom into it to kill the larva inside. They then proceed to lay their eggs on the surface of the fly pupa, which then hatch and consume it for food as they grow, pupate, and metamorphosize inside the pupal casing, and finally emerge. N asoni a reproduces through a haplo-diplo mating system, where an unfertilized female will lay haploid offspring, which will result in males, and where a fertilized female will lay diploid offspring, rearing more females. Wolba chi a , however, interferes with this normal cycle by four main mechanisms of disruption: feminization, male killing, parthenogenesis, and cytoplasmic incompatibility (CI). In CI, the sperm of infected males and uninfected females, or of females infected with a different strain of Wolb a chi a , are rendered incompatible with one another due to Wolba chi a failure of fertilization, and thus in all-male broods; in contrast, in parthenogenesis, unfertilized females will develop diploid eggs which in turn form all-female broods from unfertilized eggs. Mal...
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This document was uploaded on 03/27/2014 for the course BIO 235 at Rochester.

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