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Sexual selection

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https://www.readbyqxmd.com/read/28088438/a-snapshot-of-urban-adolescent-women-s-contraceptive-knowledge-at-the-onset-of-a-community-larc-promotion-initiative
#1
K B Greenberg, S C Jenks, N G Piazza, B R Malibiran, C A Aligne
STUDY OBJECTIVE: To contextualize young women's knowledge and attitudes regarding contraception at the outset of an intervention promoting long-acting reversible contraceptives (LARC) for teen pregnancy prevention. DESIGN: and Setting: Our intervention is based on diffusion of innovation theory, and at the outset we were interested in likely early adopters' existing knowledge and attitudes towards contraception. This mixed methods study consists of focus groups within positive youth development programs in Rochester, New York; we discussed young women's knowledge and sources of information for all FDA-approved contraceptive methods...
January 11, 2017: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/28087779/genomics-of-parallel-experimental-evolution-in-drosophila
#2
J L Graves, K L Hertweck, M A Phillips, M V Han, L G Cabral, T T Barter, L F Greer, M K Burke, L D Mueller, M R Rose
What are the genomic foundations of adaptation in sexual populations? We address this question using fitness-character and whole-genome sequence data from 30 Drosophila laboratory populations. These 30 populations are part of a nearly forty-year laboratory radiation featuring three selection regimes, each shared by ten populations for up to 837 generations, with moderately large effective population sizes. Each of three sets of ten populations that shared a selection regime consist of five populations that have long been maintained under that selection regime, paired with five populations that had only recently been subjected to that selection regime...
January 12, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28081569/gender-incongruence-of-childhood-clinical-utility-and-stakeholder-agreement-with-the-world-health-organization-s-proposed-icd-11-criteria
#3
Titia F Beek, Peggy T Cohen-Kettenis, Walter P Bouman, Annelou L C de Vries, Thomas D Steensma, Gemma L Witcomb, Jon Arcelus, Christina Richards, Griet De Cuypere, Baudewijntje P C Kreukels
The World Health Organization (WHO) is revising the tenth version of the International Classification of Diseases and Related Health Problems (ICD-10). This includes a reconceptualization of the definition and positioning of Gender Incongruence of Childhood (GIC). This study aimed to: 1) collect the views of transgender individuals and professionals regarding the retention of the diagnosis; 2) see if the proposed GIC criteria were acceptable to transgender individuals and health care providers; 3) compare results between two countries with two different healthcare systems to see if these differences influence opinions regarding the GIC diagnosis; and 4) determine whether healthcare providers from high-income countries feel that the proposed criteria are clinically useful and easy to use...
2017: PloS One
https://www.readbyqxmd.com/read/28079720/%C3%A2-s%C3%A3-lo-se-vive-una-vez-you-only-live-once-a-pilot-evaluation-of-individually-tailored-video-modules-aiming-to-increase-hiv-testing-among-foreign-born-latino-men
#4
Suzanne M Dolwick Grieb, Alejandra Flores-Miller, Kathleen R Page
BACKGROUND: Although Latinos living in the United States are disproportionately affected by HIV, the development, implementation, and evaluation of HIV prevention, testing, and linkage to care interventions lag behind efforts occurring in other communities. To address sociocultural barriers to testing, we developed a multilevel intervention. This study is a pilot evaluation of the individual-level component of the intervention-animated video modules that address specific barriers to HIV testing common among foreign-born Latino men...
February 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28079519/trends-in-antimicrobial-susceptibility-for-azithromycin-and-ceftriaxone-in-neisseria-gonorrhoeae-isolates-in-amsterdam-the-netherlands-between-2012-and-2015
#5
Carolien M Wind, Maarten F Schim van der Loeff, Alje P van Dam, Henry Jc de Vries, Jannie J van der Helm
Resistance of Neisseria gonorrhoeae to azithromycin and ceftriaxone has been increasing in the past years. This is of concern since the combination of these antimicrobials is recommended as the first-line treatment option in most guidelines. To analyse trends in antimicrobial resistance, we retrospectively selected all consultations with a positive N. gonorrhoeae culture at the sexually transmitted infection clinic, Amsterdam, the Netherlands, from January 2012 through September 2015. Minimum inhibitory concentrations (MICs) for azithromycin and ceftriaxone were analysed per year, and determinants associated with decreased susceptibility to azithromycin (MIC > 0...
January 5, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28078217/testosterone-replacement-in-the-infertile-man
#6
REVIEW
Ahmad Majzoub, Edmund Sabanegh
Hypogonadism is a common clinical condition affecting men of different age groups. In addition to its sexual consequences, it has several implications posing significant concerns for a man's health and well-being. Recent advances in testosterone (T) supplementation have facilitated hypogonadism treatment. Despite that, patients complaining of infertility or seeking conception are still hindered by the unfavorable effects supplemental T has on testicular function. Consequently, alternative approaches that can stimulate endogenous T production are favored...
December 2016: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28077685/working-with-what-you-ve-got-unattractive-males-show-greater-mate-guarding-effort-in-a-duetting-songbird
#7
Jenélle Dowling, Michael S Webster
When mates are limited, individuals should allocate resources to mating tactics that maximize fitness. In species with extra-pair paternity (EPP), males can invest in mate guarding, or, alternatively, in seeking EPP. Males should optimize fitness by adjusting investment according to their attractiveness to females, such that attractive males seek EPP, and unattractive males guard mates. This theory has received little empirical testing, leaving our understanding of the evolution of mating tactics incomplete; it is unclear how a male's relative attractiveness influences his tactics...
January 2017: Biology Letters
https://www.readbyqxmd.com/read/28077634/characterization-of-hcv-envelope-diversification-from-acute-to-chronic-infection-using-smrt-sequencing-within-a-sexually-transmitted-hepatitis-c-virus-cluster
#8
Cynthia K Y Ho, Jayna Raghwani, Sylvie Koekkoek, Richard H Liang, Jan T M Van der Meer, Marc Van Der Valk, Menno De Jong, Oliver G Pybus, Janke Schinkel, Richard Molenkamp
: In contrast to other available next generation sequencing platforms, Pacbio Single Molecule, Real-Time (SMRT) sequencing has the advantage of generating long reads, albeit with a relatively higher error rate in unprocessed data. Using this platform we longitudinally sampled and sequenced the hepatitis C virus (HCV) envelope genome region (1680 nt) from individuals belonging to a cluster of sexually-transmitted cases. All five subjects were HIV-1 coinfected and infected with a closely related strain of HCV genotype 4d...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28076550/suicide-in-university-students-in-bogot%C3%A3-colombia-2004-2014
#9
Saúl Alonso Franco, Martha Lucia Gutiérrez, Julián Sarmiento, Decsy Cuspoca, Javier Tatis, Alejandro Castillejo, Miguel Barrios, Magnolia Del Pilar Ballesteros-Cabrera, Sara Zamora, Carlos Iván Rodríguez
We report the results of a retrospective, descriptive, qualitative study of suicide among university students in Bogotá, Colombia. The objective of this study was to document the magnitude, principal characteristics, and impact of this phenomenon in the selected population. A semi-structured survey was employed to collect information from 66 individuals linked to the universities. A total of 45 cases of suicide were documented in the study period (2004 - 2014). Of these, 69% occurred in males and 31% in females...
January 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28076533/similarities-and-differences-in-crack-cocaine-use-patterns-in-santa-catarina-brazil-capital-vs-midwest
#10
Maria Terezinha Zeferino, Vivian Costa Fermo, Marcelo Brandt Fialho, Francisco Inácio Bastos
Crack cocaine has been a major public health problem in Brazil due to the individual and social harms and risks deriving from its use. This article aims to assess the characteristics of drug scenes in the capital and Midwest of Santa Catarina state. The project used the Time-Location Sampling. Between January and June 2011, 41 crack cocaine scenes were mapped in capital of Santa Catarina, whereas 33 were mapped in the Midwest of that state. Such scenes were randomly selected to be observed, as well as their days and shifts (time periods/day) for in-depth observation...
January 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28074843/sexy-males-and-sexless-females-the-origin-of-triploid-apomicts
#11
P Muralidhar, D Haig
Apomixis and polyploidy are closely associated in angiosperms, but the evolutionary reason for this association is unknown. Taraxacum officinale, the common dandelion, exists both as diploid sexuals and triploid apomicts. Here, in the context of T. officinale, we provide a model of the evolution of triploid apomicts from diploid sexuals. We posit an apomictic allele that arrests female meiosis in diploids, so that the plant produces diploid egg cells that can develop without fertilization, but haploid pollen...
January 11, 2017: Heredity
https://www.readbyqxmd.com/read/28074559/effects-of-traffic-noise-on-tree-frog-stress-levels-immunity-and-color-signaling
#12
Mathieu Troïanowski, Nathalie Mondy, Adeline Dumet, Caroline Arcanjo, Thierry Lengagne
During the last decade, many studies have focused on the detrimental effects of noise pollution on acoustic communication. Surprisingly, while it is known that noise exposure strongly influences health in humans, studies on wildlife remain scarce. In order to gain insight into the consequences of traffic noise exposure, we experimentally manipulated traffic noise exposure as well as the endocrine status of animals to investigate physiological and phenotypic consequences of noise pollution in an anuran species...
January 11, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/28070265/the-relationship-between-body-image-and-sexual-function-in-middle-aged-women
#13
Poorandokht Afshari, Zeinab Houshyar, Nahid Javadifar, Fatemeh Pourmotahari, Maryam Jorfi
INTRODUCTION: An individual's social and marital function, interpersonal relationships, and quality of life may, sometimes be affected by negative body image. This study is aimed at determining the relationship between body image and sexual function in middle-aged women. METHODS: In this cross-sectional study, 437 middle-aged women, who were referred to various public healthcare centers in Ahvaz, Iran during 2014-2015, were selected. The Female Sexual Function Index (FSFI) and Body Shape Questionnaire (BSQ) were used for data collection...
November 2016: Electronic Physician
https://www.readbyqxmd.com/read/28069935/resistance-to-type-1-interferons-is-a-major-determinant-of-hiv-1-transmission-fitness
#14
Shilpa S Iyer, Frederic Bibollet-Ruche, Scott Sherrill-Mix, Gerald H Learn, Lindsey Plenderleith, Andrew G Smith, Hannah J Barbian, Ronnie M Russell, Marcos V P Gondim, Catherine Y Bahari, Christiana M Shaw, Yingying Li, Timothy Decker, Barton F Haynes, George M Shaw, Paul M Sharp, Persephone Borrow, Beatrice H Hahn
Sexual transmission of HIV-1 is an inefficient process, with only one or few variants of the donor quasispecies establishing the new infection. A critical, and as yet unresolved, question is whether the mucosal bottleneck selects for viruses with increased transmission fitness. Here, we characterized 300 limiting dilution-derived virus isolates from the plasma, and in some instances genital secretions, of eight HIV-1 donor and recipient pairs. Although there were no differences in the amount of virion-associated envelope glycoprotein, recipient isolates were on average threefold more infectious (P = 0...
January 9, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28069345/patients-perspectives-on-quality-of-life-after-burn
#15
Marianne B Kool, Rinie Geenen, Marthe R Egberts, Hendriët Wanders, Nancy E Van Loey
BACKGROUND: The concept quality of life (QOL) refers to both health-related outcomes and one's skills to reach these outcomes, which is not yet incorporated in the burn-related QOL conceptualisation. The aim of this study was to obtain a comprehensive overview of relevant burn-specific domains of QOL from the patient's perspective and to determine its hierarchical structure. METHODS: Concept mapping was used comprising a focus group (n=6), interviews (n=25), and a card-sorting task (n=24) in burn survivors...
January 6, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28068667/breeding-site-sampling-across-the-arctic-by-individual-males-of-a-polygynous-shorebird
#16
Bart Kempenaers, Mihai Valcu
Males of many polygynous species compete for access to fertile females without providing them with resources other than sperm and without investing in care for the offspring (male dominance polygyny). In such systems, local competition for access to females is intense and typically only a few males obtain matings, leading to strong sexual selection. Sampling multiple breeding areas could then provide a mechanism for males to increase their chances to reproduce. However, little is known about such sampling behaviour and about the spatial scale at which males compete...
January 9, 2017: Nature
https://www.readbyqxmd.com/read/28068346/mutation-accumulation-in-an-asexual-relative-of-arabidopsis
#17
John T Lovell, Robert J Williamson, Stephen I Wright, John K McKay, Timothy F Sharbel
Asexual populations experience weaker responses to natural selection, which causes deleterious mutations to accumulate over time. Additionally, stochastic loss of individuals free of deleterious mutations can lead to an irreversible increase in mutational load in asexuals (the "click" in Muller's Ratchet). Here we report on the genomic divergence and distribution of mutations across eight sympatric pairs of sexual and apomictic (asexual) Boechera (Brassicaceae) genotypes. We show that apomicts harbor a greater number of derived mutations than sympatric sexual genotypes...
January 9, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28067418/genome-wide-selection-components-analysis-in-a-fish-with-male-pregnancy
#18
Sarah P Flanagan, Adam G Jones
A major goal of evolutionary biology is to identify the genome-level targets of natural and sexual selection. With the advent of next-generation sequencing, whole-genome selection components analysis provides a promising avenue in the search for loci affected by selection in nature. Here, we implement a genome-wide selection components analysis in the sex-role-reversed Gulf pipefish, Syngnathus scovelli. Our approach involves a double-digest restriction-site associated DNA sequencing (ddRAD-seq) technique, applied to adult females, non-pregnant males, pregnant males and their offspring...
January 9, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28065950/awareness-about-human-papillomavirus-as-a-cause-of-cervical-cancer-and-its-prevention-in-the-undergraduate-female-students-of-karachi
#19
Ramsha Zaheer, Nabiha Alam, Kinza Chaudary Faqir Hussain, Anam Asif Herekar, Hira Nasir, Shereen Zulfiqar Bhutta
OBJECTIVE: To determine the rate of acceptance of human papillomavirus vaccine for prevention of cervical cancer, and to identify causes of its low acceptance and means of encouraging its uptake. METHODS: This cross-sectional study was conducted at five different universities of Karachi, from July to December 2011, and comprised female undergraduate students. The participants, aged between 17-26 years, were in their first four years of undergraduate studies, and were selected from five universities...
January 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28065707/craniofacial-characteristics-in-the-sagittal-dimension-a-cephalometric-study-in-lebanese-young-adults
#20
Antoine Daraze, Myriam Delatte, Sami Bou Saba, Zeina Majzoub
OBJECTIVES: The purpose of this study was to assess the sagittal cephalometric characteristics of young adult Lebanese individuals and assess gender-related differences. MATERIALS AND METHODS: Conventional lateral cephalograms were obtained from 117 subjects. Eight linear/angular measurements combining sagittal parameters selected form McNamara and Steiner analyses were recorded. Paired t-test was applied to evaluate differences between genders and skeletal classes...
January 5, 2017: International Orthodontics
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