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Behavior Genetics

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https://www.readbyqxmd.com/read/28714052/conservation-of-phenotypes-in-the-roman-high-and-low-avoidance-rat-strains-after-embryo-transfer
#1
Cristóbal Río-Álamos, Cristina Gerbolés, Carles Tapias-Espinosa, Daniel Sampedro-Viana, Ignasi Oliveras, Ana Sánchez-González, Toni Cañete, Gloria Blázquez, María Del Mar López, Carlos Baldellou, Pedro J Otaegui, Adolf Tobeña, Alberto Fernández-Teruel
The Roman high- (RHA-I) and low-avoidance (RLA-I) rat strains are bi-directionally bred for their good versus non-acquisition of two-way active avoidance, respectively. They have recently been re-derived through embryo transfer (ET) to Sprague-Dawley females to generate specific pathogen free (SPF) RHA-I/RLA-I rats. Offspring were phenotyped at generations 1 (G1, born from Sprague-Dawley females), 3 and 5 (G3 and G5, born from RHA-I and RLA-I from G2-G4, respectively), and compared with generation 60 from our non-SPF colony...
July 17, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28714051/contributions-of-genes-and-environment-to-developmental-change-in-alcohol-use
#2
E C Long, B Verhulst, S H Aggen, K S Kendler, N A Gillespie
The precise nature of how genetic and environmental risk factors influence changes in alcohol use (AU) over time has not yet been investigated. Therefore, the aim of the present study is to examine the nature of longitudinal changes in these risk factors to AU from mid-adolescence through young adulthood. Using a large sample of male twins, we compared five developmental models that each makes different predictions regarding the longitudinal changes in genetic and environmental risks for AU. The best-fitting model indicated that genetic influences were consistent with a gradual growth in the liability to AU, whereas unique environmental risk factors were consistent with an accumulation of risks across time...
July 17, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28711986/single-nucleotide-polymorphisms-associated-with-reading-ability-show-connection-to-socio-economic-outcomes
#3
Michelle Luciano, Saskia P Hagenaars, Simon R Cox, William David Hill, Gail Davies, Sarah E Harris, Ian J Deary, David M Evans, Nicholas G Martin, Margaret J Wright, Timothy C Bates
Impairments in reading and in language have negative consequences on life outcomes, but it is not known to what extent genetic effects influence this association. We constructed polygenic scores for difficulties with language and learning to read from genome-wide data in ~6,600 children, adolescents and young adults, and tested their association with health, socioeconomic outcomes and brain structure measures collected in adults (maximal N = 111,749). Polygenic risk of reading difficulties was associated with reduced income, educational attainment, self-rated health and verbal-numerical reasoning (p < 0...
July 15, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28711985/higher-rates-of-dz-twinning-in-a-twenty-first-century-birth-cohort
#4
Sally Ann Rhea, Robin P Corley, Andrew C Heath, William G Iacono, Michael C Neale, John K Hewitt
The Colorado Twin Registry is a population based registry initiated in 1984 with the involvement of the Colorado Department of Health, Division of Vital Statistics. Recruitment includes birth cohorts several years prior to 1984 and all subsequent years. As part of a recent evaluation of Colorado birth records for the years 2006 through 2008 we became aware of a shifting trend in the proportion of MZ and DZ twins in the Colorado population. Historically (Bulmer 1970 The biology of twinning in man, Clarendon, Oxford) we have expected a 1/3, 1/3, 1/3 ratio of MZ, same-sex DZ and opposite sex DZ twins in Caucasian populations...
July 15, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28585192/rsk2-knockout-affects-emotional-behavior-in-the-intellicage
#5
Matthias Fischer, Victoria Cabello, Sandy Popp, Sven Krackow, Leif Hommers, Jürgen Deckert, Klaus-Peter Lesch, Angelika G Schmitt-Böhrer
Ribosomal s6 kinase 2 is a growth factor activated serine/threonine kinase and member of the ERK signaling pathway. Mutations in the Rsk2 gene cause Coffin-Lowry syndrome, a rare syndromic form of intellectual disability. The Rsk2 KO mouse model was shown to have learning and memory defects. We focused on the investigation of the emotional behavioral phenotype of Rsk2 KO mice mainly in the IntelliCage. They exhibited an anti-depressive, sucrose reward seeking phenotype and showed reduced anxiety. Spontaneous activity was increased in some conventional tests...
June 6, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28551761/a-family-based-study-of-the-association-between-labor-induction-and-offspring-attention-deficit-hyperactivity-disorder-and-low-academic-achievement
#6
Kelsey K Wiggs, Martin E Rickert, Sonia Hernandez-Diaz, Brian T Bateman, Catarina Almqvist, Henrik Larsson, Paul Lichtenstein, Anna Sara Oberg, Brian M D'Onofrio
The current study examined associations between labor induction and both (1) offspring attention-deficit hyperactivity disorder (ADHD) diagnosis in a Swedish birth cohort born 1992-2005 (n = 1,085,008) and (2) indices of offspring low academic achievement in a sub-cohort born 1992-1997 (n = 489,196). Associations were examined in the entire sample (i.e., related and unrelated individuals) with adjustment for measured covariates and, in order to account for unmeasured confounders shared within families, within differentially exposed cousins and siblings...
May 27, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28474239/erratum-to-publication-trends-over-55-years-of-behavioral-genetic-research
#7
Ziada Ayorech, Saskia Selzam, Emily Smith-Woolley, Valerie S Knopik, Jenae M Neiderhiser, John C DeFries, Robert Plomin
No abstract text is available yet for this article.
May 4, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28551760/genetic-and-environmental-influences-on-longitudinal-trajectories-of-functional-biological-age-comparisons-across-gender
#8
Deborah Finkel, Ola Sternäng, Åke Wahlin
We used an alternate age variable, functional biological age (fBioAge), which was based on performance on functional body measures. The aim was to examine development of fBioAge across the adult life span, and to also examine potential gender differences and genetic and environmental influences on change with age. We used longitudinal data (n = 740; chronological age (ChronAge) range 45-85 at baseline) from the Swedish Adoption/Twin Study of Aging. The rate of increase in fBioAge was twice as fast after ChronAge 75 than before...
July 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28466236/pleiotropic-effects-of-ddt-resistance-on-male-size-and-behaviour
#9
Wayne G Rostant, Jemima Bowyer, Jack Coupland, James Facey, David J Hosken, Nina Wedell
Understanding the evolution and spread of insecticide resistance requires knowing the relative fitness of resistant organisms. In the absence of insecticides, resistance is predicted to be costly. The Drosophila melanogaster DDT resistance allele (DDT-R) is associated with a male mating cost. This could be because resistant males are generally smaller, but DDT-R may also alter courtship behaviours. Here we tested for body size and courtship effects of DDT-R on mating success in competitive and non-competitive mating trials respectively...
July 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28466235/cannabis-and-depression-a-twin-model-approach-to-co-morbidity
#10
M Smolkina, K I Morley, F Rijsdijk, A Agrawal, J E Bergin, E C Nelson, D Statham, N G Martin, M T Lynskey
Cannabis use disorder (CUD) co-occurs with major depressive disorder (MDD) more frequently than would be expected by chance. However, studies to date have not produced a clear understanding of the mechanisms underlying this co-morbidity. Genetically informative studies can add valuable insight to this problem, as they allow the evaluation of competing models of co-morbidity. This study uses data from the Australian Twin Registry to compare 13 co-morbidity twin models initially proposed by Neale and Kendler (Am J Hum Genet 57:935-953, 1995)...
July 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28299468/gw-sem-a-statistical-package-to-conduct-genome-wide-structural-equation-modeling
#11
Brad Verhulst, Hermine H Maes, Michael C Neale
Improving the accuracy of phenotyping through the use of advanced psychometric tools will increase the power to find significant associations with genetic variants and expand the range of possible hypotheses that can be tested on a genome-wide scale. Multivariate methods, such as structural equation modeling (SEM), are valuable in the phenotypic analysis of psychiatric and substance use phenotypes, but these methods have not been integrated into standard genome-wide association analyses because fitting a SEM at each single nucleotide polymorphism (SNP) along the genome was hitherto considered to be too computationally demanding...
May 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28238197/phenotypic-and-genetic-relationship-between-bmi-and-drinking-in-a-sample-of-uk-adults
#12
Amanda G Wills, Luke M Evans, Christian Hopfer
The health impairments derived from both alcoholism and obesity are well known. However, reports that relate increased alcohol use with increased measures of obesity have been mixed in their findings, especially with respect to genetic factors that could potentially link these two behaviors. Here, using a large sample of adults from the UK (n ≈ 113,000), we report both the observed and genetic correlations between BMI (kg/m(2)) and two measures of alcohol use: reported quantity (drinks per week) and frequency of use (from never to daily)...
May 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28191586/attention-deficit-hyperactivity-disorder-symptoms-and-low-educational-achievement-evidence-supporting-a-causal-hypothesis
#13
Eveline L de Zeeuw, Catharina E M van Beijsterveldt, Erik A Ehli, Eco J C de Geus, Dorret I Boomsma
Attention Deficit Hyperactivity Disorder (ADHD) and educational achievement are negatively associated in children. Here we test the hypothesis that there is a direct causal effect of ADHD on educational achievement. The causal effect is tested in a genetically sensitive design to exclude the possibility of confounding by a third factor (e.g. genetic pleiotropy) and by comparing educational achievement and secondary school career in children with ADHD who take or do not take methylphenidate. Data on ADHD symptoms, educational achievement and methylphenidate usage were available in a primary school sample of ~10,000 12-year-old twins from the Netherlands Twin Register...
May 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28185111/the-relation-between-inflation-in-type-i-and-type-ii-error-rate-and-population-divergence-in-genome-wide-association-analysis-of-multi-ethnic-populations
#14
E M Derks, A H Zwinderman, E R Gamazon
Population divergence impacts the degree of population stratification in Genome Wide Association Studies. We aim to: (i) investigate type-I error rate as a function of population divergence (FST) in multi-ethnic (admixed) populations; (ii) evaluate the statistical power and effect size estimates; and (iii) investigate the impact of population stratification on the results of gene-based analyses. Quantitative phenotypes were simulated. Type-I error rate was investigated for Single Nucleotide Polymorphisms (SNPs) with varying levels of FST between the ancestral European and African populations...
May 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28154949/differential-gene-expression-associated-with-honey-bee-grooming-behavior-in-response-to-varroa-mites
#15
Mollah Md Hamiduzzaman, Berna Emsen, Greg J Hunt, Subhashree Subramanyam, Christie E Williams, Jennifer M Tsuruda, Ernesto Guzman-Novoa
Honey bee (Apis mellifera) grooming behavior is an important mechanism of resistance against the parasitic mite Varroa destructor. This research was conducted to study associations between grooming behavior and the expression of selected immune, neural, detoxification, developmental and health-related genes. Individual bees tested in a laboratory assay for various levels of grooming behavior in response to V. destructor were also analyzed for gene expression. Intense groomers (IG) were most efficient in that they needed significantly less time to start grooming and fewer grooming attempts to successfully remove mites from their bodies than did light groomers (LG)...
May 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28108863/genetic-and-environmental-structure-of-dsm-iv-criteria-for-antisocial-personality-disorder-a-twin-study
#16
Tom Rosenström, Eivind Ystrom, Fartein Ask Torvik, Nikolai Olavi Czajkowski, Nathan A Gillespie, Steven H Aggen, Robert F Krueger, Kenneth S Kendler, Ted Reichborn-Kjennerud
Results from previous studies on DSM-IV and DSM-5 Antisocial Personality Disorder (ASPD) have suggested that the construct is etiologically multidimensional. To our knowledge, however, the structure of genetic and environmental influences in ASPD has not been examined using an appropriate range of biometric models and diagnostic interviews. The 7 ASPD criteria (section A) were assessed in a population-based sample of 2794 Norwegian twins by a structured interview for DSM-IV personality disorders. Exploratory analyses were conducted at the phenotypic level...
May 2017: Behavior Genetics
https://www.readbyqxmd.com/read/27981394/heritability-of-working-in-a-creative-profession
#17
Mark Patrick Roeling, Gonneke Willemsen, Dorret I Boomsma
Creativity is the tendency to generate or recognize ideas, alternatives, or possibilities. Following a study on the genetic contribution to working in a creative profession, based on polygenic score analysis, we report the total heritability of this trait in a large sample of adult twins and their siblings registered with the Netherlands Twin Register. Data from 6755 twins and 1817 siblings were analyzed using genetic structural equation modeling. Working in a creative profession is relatively rare in our sample (2...
May 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28421346/decoupling-of-behavioral-trait-correlation-across-life-stages-in-two-holometabolous-insects
#18
Kentarou Matsumura, Taro Fuchikawa, Takahisa Miyatake
Many animal behaviors have a genetic base, and behavioral traits often correlate with one another. In this study, we tested for a behavioral correlation between tonic immobility and walking distance in the larval and adult stages independently of two holometabolous insects. We confirmed a negative correlation of traits between strains in adults of both the species; however, we did not find it in larvae of either species. This suggests that the negative correlation between tonic immobility and walking is decoupled across life stages from larva to adult...
April 18, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28413857/a-new-look-at-genetic-and-environmental-architecture-on-lipids-using-non-normal-structural-equation-modeling-in-male-twins-the-nhlbi-twin-study
#19
Sheng-Hui Wu, Koken Ozaki, Terry Reed, Ruth E Krasnow, Jun Dai
This study examined genetic and environmental influences on the lipid concentrations of 1028 male twins using the novel univariate non-normal structural equation modeling (nnSEM) ADCE and ACE models. In the best fitting nnSEM ADCE model that was also better than the nnSEM ACE model, additive genetic factors (A) explained 4%, dominant genetic factors (D) explained 17%, and common (C) and unique (E) environmental factors explained 47% and 33% of the total variance of high-density lipoprotein cholesterol (HDL-C)...
April 17, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28352972/gerald-e-mcclearn-1927-2017-a-founding-father-of-behavioral-genetics
#20
(no author information available yet)
No abstract text is available yet for this article.
March 28, 2017: Behavior Genetics
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