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https://www.readbyqxmd.com/read/28528727/sexual-inactivity-in-partnered-female-cancer-survivors
#1
Jennifer L Marino, Christobel M Saunders, Martha Hickey
OBJECTIVE: To measure sexual activity in a clinic population of partnered female cancer survivors, and to better understand reasons for sexual inactivity in this population. MATERIALS AND METHODS: Partnered peri- or post-menopausal cancer survivors seen at a specialty clinic for menopause symptoms after cancer completed Fallowfield's Sexual Activity Questionnaire, quality of life measures (the Functional Assessment of Cancer Therapy General, Breast Cancer, and Endocrine Symptom Scales), and the Greene Climacteric Scale...
May 9, 2017: Maturitas
https://www.readbyqxmd.com/read/28511726/executive-functioning-in-pedophilia-and-child-sexual-offending
#2
Claudia Massau, Gilian Tenbergen, Christian Kärgel, Simone Weiß, Hannah Gerwinn, Alexander Pohl, Till Amelung, Sebastian Mohnke, Jonas Kneer, Matthias Wittfoth, Inka Ristow, Kolja Schiltz, Klaus M Beier, Jorge Ponseti, Martin Walter, Tillmann H C Kruger, Henrik Walter, Boris Schiffer
OBJECTIVES: Pedophilia (P) is a psychiatric disease associated with sexual attraction toward children and often accompanied by child sexual offending (CSO). Consequently, it is important to address the understanding of executive dysfunctions that may increase the probability of CSO. Moreover, this research field has been lacking to disentangle executive deficits associated with pedophilia (as a deviant sexual preference) from those associated with CSO (as a deviant sexual behavior). METHODS: The German multi-sided research network NeMUP offers the opportunity to overcome these limitations...
May 17, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28495874/cranking-up-the-heat-relationships-between-energetically-costly-song-features-and-the-increase-in-thorax-temperature-in-male-crickets-and-katydids
#3
B Erregger, H Kovac, A Stabentheiner, M Hartbauer, H Römer, A K D Schmidt
Sexual displays of acoustically signalling insects are used in the context of mate attraction and mate choice. While energetic investment in sound production can increase the reproductive success of the sender, this entails metabolic costs. Resource allocation into sexually selected, reproductive traits can trade off against allocation to naturally selected traits (e.g., growth, immunity) when individuals' energy budgets are limited. Estimating the magnitude of the costs invested in acoustic signalling is necessary to understand this trade-off and its influence on fitness and life-history...
May 11, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28488974/blood-donor-deferral-policies-across-europe-and-characteristics-of-men-who-have-sex-with-men-screened-for-human-immunodeficiency-virus-in-blood-establishments-data-from-the-european-men-who-have-sex-with-men-internet-survey-emis
#4
Susanne B Schink, Ruth Offergeld, Axel J Schmidt, Ulrich Marcus
BACKGROUND: The predominant mode of transmission of human immunodeficiency virus (HIV) in Europe is male-to-male transmission. Men who have sex with men (MSM) are deferred from donating blood in many countries, but nevertheless do donate blood. Based on data from 34 countries, we estimated the proportion of MSM screened for HIV in the context of a blood donation and identified individual factors associated with this HIV screening in order to propose possible public health interventions...
March 23, 2017: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/28482339/sex-differences-in-forebrain-monoaminergic-response-to-song-performance
#5
Susan M Lyons, Keith W Sockman
In many species, successful reproduction is dependent on the ability to adjust social behavior in response to an ever-changing social environment. Because a sexual signal's value and meaning can differ between females and males, responses to those signals should also differ. One way individuals can modulate social behavior is through experience-dependent modulation of the sensory systems that process social signals. Central monoamines (norepinephrine, dopamine, serotonin) modulate neural sensitivity to social stimuli and are key regulators of experience-dependent neuroplasticity in vertebrate sensory systems...
May 9, 2017: Brain, Behavior and Evolution
https://www.readbyqxmd.com/read/28480003/are-body-size-and-volatile-blends-honest-signals-in-orchid-bees
#6
Brenda Jessica Arriaga-Osnaya, Jorge Contreras-Garduño, Francisco Javier Espinosa-García, Yolanda Magdalena García-Rodríguez, Miguel Moreno-García, Humberto Lanz-Mendoza, Héctor Godínez-Álvarez, Raúl Cueva Del Castillo
Secondary sexual traits may convey reliable information about males' ability to resist pathogens and that females may prefer those traits because their genes for resistance would be passed on to their offspring. In many insect species, large males have high mating success and can canalize more resources to the immune function than smaller males. In other species, males use pheromones to identify and attract conspecific mates, and thus, they might function as an honest indicator of a male's condition. The males of orchid bees do not produce pheromones...
May 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28477095/have-mischievous-responders-misidentified-sexual-minority-youth-disparities-in-the-national-longitudinal-study-of-adolescent-to-adult-health
#7
Jessica N Fish, Stephen T Russell
The National Longitudinal Study of Adolescent to Adult Health (Add Health) has been instrumental in identifying sexual minority youth health disparities. Recent commentary suggested that some Wave 1 youth responders, especially males, intentionally mismarked same-sex attraction and, as a result, published reports of health disparities from these data may be suspect. We use two recently developed approaches to identify "jokesters" and mischievous responding and apply them to the Add Health data. First, we show that Wave 1 same-sex attracted youth, including those who later reported completely heterosexual identities in adulthood, were no more likely than different-sex attracted youth and consistently heterosexual participants to be "jokesters...
May 5, 2017: Archives of Sexual Behavior
https://www.readbyqxmd.com/read/28474329/age-influence-on-sexual-behavior-of-the-lesser-cornstalk-borer-elasmopalpus-lignosellus-zeller-lepidoptera-pyralidae
#8
L M S Xavier, D M Magalhães, P A Viana, M C Blassioli-Moraes, M Borges, J A F Barrigossi, E F Vilela, R A Laumann
The objective of this work was to evaluate the reproductive behavior and response of Elasmopalpus lignosellus (Zeller) males to calling females. Frequency of mating was recorded in couples during the first 7 days of the adult stage. Calling behavior of females was observed during the first 4 days of the adult stage and responses of males, in the same age intervals, to calling females were recorded in wind tunnel bioassays. The maximum number of matings occurred when the couple was between 24 and 48 h old...
May 4, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28474181/sexual-selection-on-receptor-organ-traits-younger-females-attract-males-with-longer-antennae
#9
Tamara L Johnson, Matthew R E Symonds, Mark A Elgar
Sexual selection theory predicts that female choice may favour the evolution of elaborate male signals. Darwin also suggested that sexual selection can favour elaborate receiver structures in order to better detect sexual signals, an idea that has been largely ignored. We evaluated this unorthodox perspective by documenting the antennal lengths of male Uraba lugens Walker (Lepidoptera: Nolidae) moths that were attracted to experimentally manipulated emissions of female sex pheromone. Either one or two females were placed in field traps for the duration of their adult lives in order to create differences in the quantity of pheromone emissions from the traps...
June 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/28470835/the-chemical-web-of-a-spider-orchid-sulfurous-semiochemicals-seduce-male-wasp-pollinator
#10
Björn Bohman, Ryan D Phillips, Gavin R Flematti, Russell A Barrow, Rod Peakall
One of the most intriguing natural observations is the pollination of orchids by sexual deception. Here, we identify floral semiochemicals from Caladenia (spider orchids) for the first time. We demonstrate that C. crebra, attracts its single pollinator species with a unique system of (methylthio)phenols, three of which are new natural products. Furthermore, the same compounds constitute the sex pheromone of the pollinator, the thynnine wasp Campylothynnus flavopictus, representing the first occurrence of sulfurous sex pheromones in Hymenoptera...
May 4, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28468747/using-computer-simulations-for-investigating-a-sex-education-intervention-an-exploratory-study
#11
Anastasia Eleftheriou, Seth Bullock, Cynthia A Graham, Roger Ingham
BACKGROUND: Sexually transmitted infections (STIs) are ongoing concerns. The best method for preventing the transmission of these infections is the correct and consistent use of condoms. Few studies have explored the use of games in interventions for increasing condom use by challenging the false sense of security associated with judging the presence of an STI based on attractiveness. OBJECTIVES: The primary purpose of this study was to explore the potential use of computer simulation as a serious game for sex education...
May 3, 2017: JMIR Serious Games
https://www.readbyqxmd.com/read/28467238/sexual-orientation-disparities-in-human-papillomavirus-vaccination-in-a-longitudinal-cohort-of-u-s-males-and-females
#12
Brittany M Charlton, Sari L Reisner, Madina Agénor, Allegra R Gordon, Vishnudas Sarda, S Bryn Austin
PURPOSE: This study sought to examine how human papillomavirus (HPV) vaccination may differ across sexual orientation groups (e.g., bisexuals compared to heterosexuals)-particularly in boys and men, about whom little is known. METHODS: Data were from a prospective cohort of 10,663 U.S. females and males enrolled in the Growing Up Today Study followed from 1996 to 2014. Participants were aged 11-24 years when the vaccine was approved for females in 2006 and 14-27 years when approved for males in 2009...
May 3, 2017: LGBT Health
https://www.readbyqxmd.com/read/28466434/non-heterosexuality-relationships-and-young-women-s-contraceptive-behavior
#13
Elizabeth J Ela, Jamie Budnick
Non-heterosexual young women have a higher rate of unintended pregnancy than their heterosexual peers, but their fertility behaviors are understudied. We use longitudinal data from the Relationship Dynamics and Social Life study to investigate mechanisms contributing to non-heterosexual women's higher pregnancy risk. These data include weekly reports of relationships, sex, and contraceptive use over 30 months. We compare the relationships and fertility behaviors of three groups: exclusively heterosexual (consistent heterosexual behavior, identity, and attraction); mostly heterosexual (heterosexual identity with same-sex behavior and/or same-sex attraction); and LGBTQ (any non-heterosexual identity)...
May 2, 2017: Demography
https://www.readbyqxmd.com/read/28447367/sex-hormones-function-as-sex-attractant-pheromones-in-house-mice-and-brown-rats
#14
Stephen Takacs, Regine Gries, Gerhard J Gries
Sex hormones of mammals control the expression of sexual characteristics and bodily functions. The male hormone testosterone and the female hormones progesterone and estradiol are known to occur in urine markings of mice. Herein, we show that all three hormones are also present in urine of brown rats, and that they are effective sexual communication signals (pheromones) that elicit attraction behavior of prospective mates in both brown rats and house mice. When added as lures to trap boxes in field experiments, synthetic testosterone, e...
April 26, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28432814/do-males-choose-their-mates-in-the-lekking-moth-achroia-grisella-influence-of-female-body-mass-and-male-reproductive-status-on-male-mate-choice
#15
Marlène Goubault, Rebecca Burlaud
Lekking males aggregate to attract females and contribute solely to egg fertilization, without any further parental care. Evolutionary theory therefore predicts them to be non-choosy towards their mates, because any lost mating opportunities would outweigh the benefits associated with such preferences. Nevertheless, due to time costs, the production of energetically costly sexual displays, and potential sperm limitation, the mating effort of lekking males is often considerable. These factors, combined with the fact that many females of varying quality are likely to visit leks, could favor the evolution of male mate preferences...
April 22, 2017: Insect Science
https://www.readbyqxmd.com/read/28425895/understanding-sexual-orientation-and-health-in-canada-who-are-we-capturing-and-who-are-we-missing-using-the-statistics-canada-sexual-orientation-question
#16
Christoffer Dharma, Greta R Bauer
OBJECTIVE: Public health research on inequalities in Canada depends heavily on population data sets such as the Canadian Community Health Survey. While sexual orientation has three dimensions - identity, behaviour and attraction - Statistics Canada and public health agencies assess sexual orientation with a single questionnaire item on identity, defined behaviourally. This study aims to evaluate this item, to allow for clearer interpretation of sexual orientation frequencies and inequalities...
April 20, 2017: Canadian Journal of Public Health. Revue Canadienne de Santé Publique
https://www.readbyqxmd.com/read/28424743/towards-bi-inclusive-policies-suggestions-based-on-research-on-dutch-same-sex-attracted-young-people
#17
Jantine van Lisdonk, Saskia Keuzenkamp
Dutch national LGBT policies are not bi-inclusive and this study provides suggestions for improvement, based on empirical research. Attention for bisexuality in policy appears simply to pay lip service and to endorse the construction of sexual orientation as a hetero/homo binary. The outcomes of our survey (n = 1449) and in-depth interviews (n = 38) of Dutch same-sex attracted young people suggest that special attention for bisexual people is warranted. Compared to exclusively same-sex attracted participants, the equally both-sex attracted participants scored worse on openness about their sexual attraction, visibility discomfort, perceived acceptance, and suicide attempts...
2017: Sexuality Research & Social Policy
https://www.readbyqxmd.com/read/28419833/sexual-selection-sexual-isolation-and-pheromones-in-drosophila-melanogaster-strains-after-long-term-maintaining-on-different-diets
#18
Jelena Trajković, Dragana Miličić, Tatjana Savić, Sofija Pavković-Lučić
Evolution of reproductive isolation may be a consequence of a variety of signals used in courtship and mate preferences. Pheromones play an important role in both sexual selection and sexual isolation. The abundance of pheromones in Drosophila melanogaster may depend on different environmental factors, including diet. The aim of this study was to ascertain to which degree principal pheromones affect sexual selection in D. melanogaster. We used D. melanogaster strains reared for 14 years on four substrates: standard cornmeal substrate and those containing tomato, banana and carrot...
April 15, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28413431/asian-house-rats-may-facilitate-their-invasive-success-through-suppressing-brown-rats-in-chronic-interaction
#19
Hong-Ling Guo, Hua-Jing Teng, Jin-Hua Zhang, Jian-Xu Zhang, Yao-Hua Zhang
BACKGROUND: The Asian house rat (Rattus tanezumi) and the brown rat (Rattus norvegicus) are closely related species and are partially sympatric in southern China. Over the past 20 years, R. tanezumi has significantly expanded northward in China and partially replaced the native brown rat subspecies, R. n. humiliatus. Although invasive species are often more aggressive than native species, we did not observe interspecific physical aggression between R. tanezumi and R. n. humiliatus. Here, we focused on whether or not R...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28406649/born-this-way-sexual-orientation-beliefs-and-their-correlates-in-lesbian-and-bisexual-women
#20
James S Morandini, Alexander Blaszczynski, Daniel S J Costa, Alexandra Godwin, Ilan Dar-Nimrod
In this study, we examined how beliefs about the nature and origin of sexual orientation were associated with sexual identity outcomes, namely internalized sexual stigma and sexual orientation uncertainty, and in turn, psychological well-being in sexual minority women. A community sample of 393 lesbian and 205 bisexual women were recruited for a cross-sectional online survey. Using multigroup structural equation modeling, we examined whether believing sexual orientation to be inborn/immutable (i.e., natural) and/or as existing in discrete categories (i...
April 13, 2017: Journal of Counseling Psychology
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