Publications

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organization of foraging behavior in larvae of cosmopolitan, widespread, and endemic drosophila species.to explore the evolution of higher order behavioral traits we investigated the organization of foraging patterns in first instar larvae of natural populations of drosophila. we examined drosophila simulans (cosmopolitan); d. mauritania (widespread); d. pavani, and d. gaucha (endemic). larvae of these four species share the same behavior components that comprise foraging (locomotion, feeding, bending, and turning). d. simulans and d. mauritania larvae show uncoupled foraging patterns organized in ...200717394057
comparative genomics of wolbachia and the bacterial species concept.the importance of host-specialization to speciation processes in obligate host-associated bacteria is well known, as is also the ability of recombination to generate cohesion in bacterial populations. however, whether divergent strains of highly recombining intracellular bacteria, such as wolbachia, can maintain their genetic distinctness when infecting the same host is not known. we first developed a protocol for the genome sequencing of uncultivable endosymbionts. using this method, we have se ...201323593012
hybridization occurs between drosophila simulans and d. sechellia in the seychelles archipelago.drosophila simulans and d. sechellia are sister species that serve as a model to study the evolution of reproductive isolation. while d. simulans is a human commensal that has spread all over the world, d. sechellia is restricted to the seychelles archipelago and is found to breed exclusively on the toxic fruit of morinda citrifolia. we surveyed the relative frequency of males from these two species in a variety of substrates found on five islands of the seychelles archipelago. we sampled differ ...201424773151
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