Asymmetrical positive assortative mating induced by developmental lead (Pb2+ ) exposure in a model system, Drosophila melanogaster

Current Zoology
Elizabeth K PetersonBernard Possidente

Abstract

Anthropogenic pollutants have the potential to disrupt reproductive strategies. Little is known about how lead (Pb2+) exposure disrupts individual-level responses in reproductive behaviors, which are important for fitness. Drosophila melanogaster was used as a model system to determine the effects of: 1) developmental lead exposure on pre-mating reproductive behaviors (i.e., mate preference), and 2) lead exposure and mating preferences on fitness in the F0 parental generation and F1 un-exposed offspring. Wild-type strains of D. melanogaster were reared from egg stage to adulthood in control or leaded medium (250 μM PbAc) and tested for differences in: mate preference, male song performance, sex pheromone expression, fecundity, mortality, and body weight. F0 leaded females preferentially mated with leaded males (i.e., asymmetrical positive assortative mating) in 2-choice tests. This positive assortative mating was mediated by the females (and not the males) and was dependent upon context and developmental exposure to Pb. Neither the courtship song nor the sex pheromone profile expressed by control and leaded males mediated the positive assortative mating in leaded females. Leaded females did not incur a fitness cost in terms of ...Continue Reading

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Citations

Mar 21, 2020·Bulletin of Environmental Contamination and Toxicology·Elizabeth K PetersonBernard Possidente
Jun 24, 2019·Bulletin of Environmental Contamination and Toxicology·Elizabeth K PetersonPauline Carrico

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