Asymmetrical positive assortative mating induced by developmental lead (Pb2+) exposure in a model system, Drosophila melanogaster
| Autor: | Roman Yukilevich, Kelly M LaRue, Joanne D. Kehlbeck, Bernard Possidente, Kyle Ferraiolo, Kurt Hollocher, Helmut V. B. Hirsch, Elizabeth K. Peterson |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
media_common.quotation_subject Population Context (language use) 010501 environmental sciences Biology 01 natural sciences species recognition system Courtship 03 medical and health sciences Mating education 0105 earth and related environmental sciences media_common positive assortative mating Genetics education.field_of_study cuticular hydrocarbons Assortative mating random mating Fecundity Mating preferences 030104 developmental biology Sex pheromone Special Column: Conservation Concerns in Behavioral Toxicology behavior and behavior mechanisms Animal Science and Zoology |
| Zdroj: | Current Zoology |
| ISSN: | 2396-9814 1674-5507 |
| DOI: | 10.1093/cz/zox016 |
| Popis: | 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 reduced fecundity, increased mortality, or decreased body weight by mating with leaded males. These results suggest that sublethal exposure to lead during development can alter mate preferences in adults, but not fitness measures once lead exposure has been removed. We suggest that changes in mate preference may induce fitness costs, as well as long-term population and multi-generational implications, if pollution is persistent in the environment. |
| Databáze: | OpenAIRE |
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