Next Article in Journal
Karyotype Evolution in Birds: From Conventional Staining to Chromosome Painting
Next Article in Special Issue
Genomic Signatures of Reinforcement
Previous Article in Journal
Resistance to 6-Methylpurine is Conferred by Defective Adenine Phosphoribosyltransferase in Tetrahymena
Previous Article in Special Issue
Evolutionary Mechanisms of Varying Chromosome Numbers in the Radiation of Erebia Butterflies
Open AccessFeature PaperArticle

Non-Pleiotropic Coupling of Daily and Seasonal Temporal Isolation in the European Corn Borer

Department of Biology, Tufts University, 200 Boston Ave, Ste. 4700, Medford, MA 02155, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Genes 2018, 9(4), 180; https://doi.org/10.3390/genes9040180
Received: 30 January 2018 / Revised: 15 March 2018 / Accepted: 20 March 2018 / Published: 26 March 2018
(This article belongs to the Special Issue Evolutionary Genetics of Reproductive Isolation)
Speciation often involves the coupling of multiple isolating barriers to produce reproductive isolation, but how coupling is generated among different premating barriers is unknown. We measure the degree of coupling between the daily mating time and seasonal mating time between strains of European corn borer (Ostrinia nubilalis) and evaluate the hypothesis that the coupling of different forms of allochrony is due to a shared genetic architecture, involving genes with pleiotropic effects on both timing phenotypes. We measure differences in gene expression at peak mating times and compare these genes to previously identified candidates that are associated with changes in seasonal mating time between the corn borer strains. We find that the E strain, which mates earlier in the season, also mates 2.7 h earlier in the night than the Z strain. Earlier daily mating is correlated with the differences in expression of the circadian clock genes cycle, slimb, and vrille. However, different circadian clock genes associate with daily and seasonal timing, suggesting that the coupling of timing traits is maintained by natural selection rather than pleiotropy. Juvenile hormone gene expression was associated with both types of timing, suggesting that circadian genes activate common downstream modules that may impose constraint on future evolution of these traits. View Full-Text
Keywords: circadian clock; allochronic isolation; gene expression; speciation; sexual behavior circadian clock; allochronic isolation; gene expression; speciation; sexual behavior
Show Figures

Graphical abstract

MDPI and ACS Style

Levy, R.C.; Kozak, G.M.; Dopman, E.B. Non-Pleiotropic Coupling of Daily and Seasonal Temporal Isolation in the European Corn Borer. Genes 2018, 9, 180.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop