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assortative mating

N R Zilhão, M C Olthof, D J A Smit, D C Cath, L Ligthart, C A Mathews, K Delucchi, D I Boomsma, C V Dolan
BACKGROUND: Genetic-epidemiological studies that estimate the contributions of genetic factors to variation in tic symptoms are scarce. We estimated the extent to which genetic and environmental influences contribute to tics, employing various phenotypic definitions ranging between mild and severe symptomatology, in a large population-based adult twin-family sample. METHOD: In an extended twin-family design, we analysed lifetime tic data reported by adult mono- and dizygotic twins (n = 8323) and their family members (n = 7164; parents and siblings) from 7311 families in the Netherlands Twin Register...
December 15, 2016: Psychological Medicine
Gina Potarca
The Internet has now become a habitual channel for finding a partner, but little is known about the impact of this recent partnership market on mate selection patterns. This study revisits the supply side perspective on assortative mating by exploring the role played by online venues in breeding educational, racial/ethnic and religious endogamy. It compares couples that met online (through either online dating platforms, Internet social networking, Internet gaming website, Internet chat, Internet community, etc...
January 2017: Social Science Research
Spencer J Ingley, Gil G Rosenthal
No abstract text is available yet for this article.
January 2017: Evolution; International Journal of Organic Evolution
Noah Zaitlen, Scott Huntsman, Donglei Hu, Melissa Spear, Celeste Eng, Sam S Oh, Marquitta J White, Angel Mak, Adam Davis, Kelly Meade, Emerita Brigino-Buenaventura, Michael A LeNoir, Kirsten Bibbins-Domingo, Esteban G Burchard, Eran Halperin
Statistical models in medical and population genetics typically assume that individuals assort randomly in a population. While this simplifies model complexity, it contradicts an increasing body of evidence of nonrandom mating in human populations. Specifically, it has been shown that assortative mating is significantly affected by genomic ancestry. In this work, we examine the effects of ancestry-assortative mating on the linkage disequilibrium between local ancestry tracks of individuals in an admixed population...
January 2017: Genetics
D Berner, M Ammann, E Spencer, A Rüegg, D Lüscher, D Moser
Speciation can be initiated by adaptive divergence between populations in ecologically different habitats, but how sexually based reproductive barriers contribute to this process is less well understood. We here test for sexual isolation between ecotypes of threespine stickleback fish residing in adjacent lake and stream habitats in the Lake Constance basin, Central Europe. Mating trials exposing females to pairings of territorial lake and stream males in outdoor mesocosms allowing for natural reproductive behaviour reveal that mating occurs preferentially between partners of the same ecotype...
November 18, 2016: Journal of Evolutionary Biology
J Winternitz, J L Abbate, E Huchard, J Havlíček, L Z Garamszegi
Genes of the major histocompatibility complex (MHC) in vertebrates are integral for effective adaptive immune response and are associated with sexual selection. Evidence from a range of vertebrates supports MHC-based preference for diverse and dissimilar mating partners, but evidence from human mate choice studies has been disparate and controversial. Methodologies and sampling peculiarities specific to human studies make it difficult to know whether wide discrepancies in results among human populations are real or artefact...
November 17, 2016: Molecular Ecology
Amy M Yule, MaryKate Martelon, Stephen V Faraone, Nicholas Carrellas, Timothy E Wilens, Joseph Biederman
OBJECTIVE: The main aim of this study was to use familial risk analysis to examine the association between attention deficit hyperactivity disorder (ADHD) and substance use disorders (SUDs) attending to sex effects and the specificity of alcohol and drug use disorder risks. METHODS: Subjects were derived from two longitudinal case-control family studies of probands aged 6-17 years with and without DSM-III-R ADHD of both sexes and their first degree relatives followed from childhood onto young adult years...
February 2017: Journal of Psychiatric Research
Tina Henrich, Martin Kalbe
BACKGROUND: The formation of reproductive barriers in diverging lineages is a prerequisite to complete speciation according to the biological species concept. In parasites with complex life cycles, speciation may be driven by adaptation to different intermediate hosts, yet diverging lineages can still share the same definitive host where reproduction takes place. In these cases, prezygotic isolation mechanisms should evolve very early and be particularly strong, preventing costly unfavourable matings...
November 9, 2016: BMC Evolutionary Biology
David McClendon
As interfaith marriage has become more common, religion is thought to be less important for sorting partners. However, prior studies on religious assortative mating use samples of prevailing marriages, which miss how local marriage markets shape both partner selection and marriage timing. Drawing on search theory and data from 8,699 young adults (ages 18-31) in the National Longitudinal Study of Youth 1997, the author examined the association between the concentration of co-religionists in local marriage markets and marriage timing and partner selection using event history methods...
October 2016: Journal of Marriage and the Family
Cécile Schweitzer, Geoffrey Melot, Chloé Laubu, Maria Teixeira, Sébastien Motreuil, François-Xavier Dechaume-Moncharmont
In monogamous species, partner compatibility is a key factor influencing pairing and reproductive success. In pairs with biparental care, studies have mostly focused on behavioral compatibility because it is likely to encourage the coordination of parental care within pairs, leading to a better reproductive success. Behavior modulation, throughout the breeding season and as a function of the social context, is under the regulatory feedback control of endocrine mechanisms. From this link, the idea of hormonal partner compatibility as a key component of pair cohesion and maintenance has recently emerged...
January 1, 2017: General and Comparative Endocrinology
Philip W Hedrick
Assortative mating has been suggested to result in an increase in heritability and additive genetic variance through an increase in linkage disequilibrium. The impact of assortative mating on linkage disequilibrium was explicitly examined for the two-locus model of Wright (1921) and two selective assortative mating models. For the Wright (1921) model, when the proportion of assortative mating was high, positive linkage disequilibrium was generated. However, when the proportion of assortative mating was similar to that found in some studies, the amount of linkage disequilibrium was quite low...
January 5, 2017: G3: Genes—Genomes—Genetics
D S Wright, N Demandt, J T Alkema, O Seehausen, T G G Groothuis, M E Maan
Local adaptation can be a potent force in speciation, with environmental heterogeneity leading to niche specialization and population divergence. However, local adaption often requires nonrandom mating to generate reproductive isolation. Population divergence in sensory properties can be particularly consequential in speciation, affecting both ecological adaptation and sexual communication. Pundamilia pundamila and Pundamilia nyererei are two closely related African cichlid species that differ in male coloration, blue vs...
October 22, 2016: Journal of Evolutionary Biology
Janette W Boughman, Richard Svanbäck
The ecological niche and mate preferences have independently been shown to be important for the process of speciation. Here, we articulate a novel mechanism by which ecological niche use and mate preference can be linked to promote speciation. The degree to which individual niches are narrow and clustered affects the strength of divergent natural selection and population splitting. Similarly, the degree to which individual mate preferences are narrow and clustered affects the strength of divergent sexual selection and assortative mating between diverging forms...
January 2017: Evolution; International Journal of Organic Evolution
Wouter J Peyrot, Matthew R Robinson, Brenda W J H Penninx, Naomi R Wray
Importance: Considerable partner resemblances have been found for a wide range of psychiatric disorders, meaning that partners of affected individuals have an increased risk of being affected compared with partners of unaffected individuals. If this resemblance is reflected in genetic similarity between partners, genetic risk is anticipated to accumulate in offspring, but these potential consequences have not been quantified and have been left implicit. Observations: The anticipated consequences of partner resemblance on prevalence and heritability of psychiatric traits in the offspring generation were modeled for disorders with varying heritabilities, population prevalence (lifetime risk), and magnitudes of partner resemblance...
November 1, 2016: JAMA Psychiatry
Ryan Greenway, Shannon Drexler, Lenin Arias-Rodriguez, Michael Tobler
Assortative mating is critical for reproductive isolation during speciation, however, the mechanisms underlying mating preferences are often unknown. Assortative mating can be mediated through preferences for condition-dependent and adaptive ("magic") traits, but rigorously testing these hypotheses has been impeded by trait covariation in living organisms. We used computer-generated models to examine the role of body shape in producing association preferences between fish populations undergoing ecological speciation in different habitat types...
October 8, 2016: Evolution; International Journal of Organic Evolution
Anning Hu, Zhenchao Qian
The expansion of higher education witnessed in many societies influences the pattern of educational assortative mating. Structural transition theory predicts growing educational homogamy due to increasing preference for highly-educated partners who become more widely available. In contrast, social closure theory suggests depressed educational homogamy because the inflation of the education elite circle fosters the openness of marriage market, reducing the preference for a highly-educated mate and increasing the penetrability across social-status boundaries...
November 2016: Social Science Research
Yusan Yang, Corinne L Richards-Zawacki, Anisha Devar, Matthew B Dugas
The concurrent divergence of mating traits and preferences is necessary for the evolution of reproductive isolation via sexual selection, and such coevolution has been demonstrated in diverse lineages. However, the extent to which assortative mate preferences are sufficient to drive reproductive isolation in nature is less clear. Natural contact zones between lineages divergent in traits and preferences provide exceptional opportunities for testing the predicted evolutionary consequences of such divergence...
October 5, 2016: Evolution; International Journal of Organic Evolution
Delphine Legrand, Nicolas Larranaga, Romain Bertrand, Simon Ducatez, Olivier Calvez, Virginie M Stevens, Michel Baguette
The existence of dispersal syndromes contrasting disperser from resident phenotypes within populations has been intensively documented across taxa. However, how such suites of phenotypic traits emerge and are maintained is largely unknown, although deciphering the processes shaping the evolution of dispersal phenotypes is a key in ecology and evolution. In this study, we created artificial populations of a butterfly, in which we controlled for individual phenotypes and measured experimentally the roles of selection and genetic constraints on the correlations between dispersal-related traits: flight performance and wing morphology...
September 28, 2016: Proceedings. Biological Sciences
Guillem Pérez I de Lanuza, Enrique Font, Miguel Ángel Carretero
Previous work with a colour polymorphic population of Podarcis muralis (Lacertidae) revealed that lizards pair by ventral colour, favouring the same colour (i.e. homomorphic) pairs. Such assortative pairing, which probably results in colour assortative mating, can have consequences for the genetic structure of the population and potentially promote speciation. The population previously studied, located in the Pyrenees, encompasses white, yellow and orange animals, as well as intermediate white-orange and yellow-orange morphs...
October 2016: Die Naturwissenschaften
Steve G A van de Weijer, Kevin M Beaver
There has been a growing body of research examining mate and spousal similarity on antisocial behaviors. The results of these studies have shown varying degrees of similarity between mates and spouses, but the precise mechanisms accounting for such similarity have remained somewhat elusive. The current study builds off this line of research and examines spousal similarity on criminal offending behaviors. Moreover, we also examine the potential factors that might account for spousal similarity. This study analyzed data drawn from two generations of Dutch spouses...
September 19, 2016: Psychiatric Quarterly
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