Relating quantitative variation within a behavior to variation in transcription.

Autor: Benowitz KM; Department of Genetics, University of Georgia, Athens, Georgia, 30602., McKinney EC; Department of Genetics, University of Georgia, Athens, Georgia, 30602., Cunningham CB; Department of Genetics, University of Georgia, Athens, Georgia, 30602.; Department of Biosciences, Swansea University, Swansea, SA2 8PP, UK., Moore AJ; Department of Genetics, University of Georgia, Athens, Georgia, 30602.
Jazyk: angličtina
Zdroj: Evolution; international journal of organic evolution [Evolution] 2017 Aug; Vol. 71 (8), pp. 1999-2009. Date of Electronic Publication: 2017 Jun 08.
DOI: 10.1111/evo.13273
Abstrakt: Many studies have shown that variation in transcription is associated with changes in behavioral state, or with variation within a state, but little has been done to address if the same genes are involved in both. Here, we investigate the transcriptional basis of variation in parental provisioning using two species of burying beetle, Nicrophorus orbicollis and Nicrophorus vespilloides. We used RNA-seq to compare transcription in parents that provided high amounts of provisioning behavior versus low amounts in males and females of each species. We found no overarching transcriptional patterns distinguishing high from low caring parents, and no informative transcripts that displayed particularly large expression differences in either sex. However, we did find subtler gene expression differences between high and low provisioning parents that are consistent across both sexes and species. Furthermore, we show that transcripts previously implicated in transitioning into parental care in N. vespilloides had high variance in the levels of transcription and were unusually likely to display differential expression between high and low provisioning parents. Thus, quantitative behavioral variation appears to reflect many transcriptional differences of small effect. Furthermore, the same transcripts required for the transition between behavioral states are also related to variation within a behavioral state.
(© 2017 The Author(s). Evolution © 2017 The Society for the Study of Evolution.)
Databáze: MEDLINE
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