No Association between Personality and Candidate Gene Polymorphisms in a Wild Bird Population

Consistency of between-individual differences in behaviour or personality is a phenomenon in populations that can have ecological consequences and evolutionary potential. One way that behaviour can evolve is to have a genetic basis. Identifying the molecular genetic basis of personality could therefore provide insight into how and why such variation is maintained, particularly in natural populations. Previously identified candidate genes for personality in birds include the dopamine receptor D4 (DRD4), and serotonin transporter (SERT). Studies of wild bird populations have shown that exploratory and bold behaviours are associated with polymorphisms in both DRD4 and SERT. Here we tested for polymorphisms in DRD4 and SERT in the Seychelles warbler (Acrocephalus sechellensis) population on Cousin Island, Seychelles, and then investigated correlations between personality and polymorphisms in these genes. We found no genetic variation in DRD4, but identified four polymorphisms in SERT that clustered into five haplotypes. There was no correlation between bold or exploratory behaviours and SERT polymorphisms/haplotypes. The null result was not due to lack of power, and indicates that there was no association between these behaviours and variation in the candidate genes tested in this population. These null findings provide important data to facilitate representative future meta-analyses on candidate personality genes

Special Project

The One Hundred and First Justice: An Analysis of the Opinions of Justice John Paul Stevens, Sitting as Judge on the Seventh Circuit Court of Appeals This article will examine the opinions written by Mr. Justice Stevens while he served on the Court of Appeals for the Seventh Circuit. The areas examined are constitutional, antitrust, labor, securities, federal tax, administrative, and federal jurisdictional law. This article also will seek to reach some conclusions on Stevens\u27 position in the several areas while he served on the Seventh Circuit and to suggest the factors he may consider important in deciding cases in the future. We hope the article will give its readers an opportunity to analyze and evaluate the existing opinions of the new associate justice and to gain some insight into the way he approaches cases. An appendix is provided that describes briefly those opinions we consider of interest.\u2

Evidence for selection maintaining MHC diversity in a rodent species despite strong density fluctuations

Schuster AC, Herde A, Mazzoni CJ, Eccard JA, Sommer S. Evidence for selection maintaining MHC diversity in a rodent species despite strong density fluctuations. Immunogenetics. 2016;68(6-7):429-437