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Sexual selection

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https://www.readbyqxmd.com/read/28930668/aspects-of-sexual-precocity-and-morphometry-of-uterus-placenta-and-embryos-fetuses-in-piau-breed-and-commercial-line-gilts
#1
José Carlos Montes, Jurandy Mauro Penitente-Filho, Simone Eliza Facioni Guimarães, Paulo Sávio Lopes, Breno Soares Camilo, Hugo Hideki Shiomi, Daniel Araújo Lima, Rogério Oliveira Pinho, Jhonata Vieira Tavares do Nascimento Pereira, Denise Silva Okano, Karine Assis Costa, José Domingos Guimarães
In view of the importance of the genetic material of local breeds in the swine industry and the lack of information about reproductive performance of Piau females, two experiments were conducted to evaluate puberty and sexual maturity as well as the morphometry of embryos/fetuses, placenta and uterus during the first 90 days of gestation in Piau breed and Commercial line gilts. In experiment I, 37 Piau and 25 commercial line gilts were used. From the 120 days of age, detection of estrus was performed using mature boars from the first to third estrus of each gilt...
September 12, 2017: Theriogenology
https://www.readbyqxmd.com/read/28929904/sexual-behaviours-in-the-context-of-the-ebola-virus-disease-evd-in-ghana
#2
Eric Y Tenkorang
Evidence suggests that Ebola virus disease can be transmitted through unprotected sexual intercourse, in particular through contact with the semen of an infected person. Yet few studies examine sexual behaviours in the context of Ebola. Using data collected from 460 women and 340 men within 40 selected communities in the Greater Accra Region of Ghana, this study employed hierarchical linear modelling to examine individual and community-level factors that influence willingness to engage in behaviours that protect against the sexual transmission of Ebola...
September 20, 2017: Culture, Health & Sexuality
https://www.readbyqxmd.com/read/28924642/breastfeeding-un-covered-narratives-of-public-breastfeeding-on-romanian-discussion-forums
#3
Diana Tăut
PURPOSE: The aim of this study was to explore the construction of breastfeeding in public, as depicted in the stories and the opinions of women participating in discussions on public forums. METHOD: There were 8 discussion forums selected, from which 769 messages were subjected to a narrative analysis further informed by recurrent themes identified in the literature and across messages. The emerging narratives were grouped based on their valence, and three broader categories of themes were formed, highlighting the predominant tone towards breastfeeding in public...
September 18, 2017: International Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/28922821/individual-traveller-health-priorities-and-the-pre-travel-health-consultation
#4
Gerard T Flaherty, Bingling Chen, Gloria Avalos
The purpose of this study was to examine the principal travel health priorities of travellers. The most frequently selected travel health concerns were accessing medical care abroad, dying abroad, insect bites, malaria, personal safety and travel security threats. The travel health risks of least concern were culture shock, fear of flying, jet lag and sexually transmitted infections. This study is the first to develop a hierarchy of self-declared travel health risk priorities among travellers.
September 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28921784/the-evolution-of-gonad-expenditure-and-gonadosomatic-index-gsi-in-male-and-female-broadcast-spawning-invertebrates
#5
Geoff A Parker, Steven A Ramm, Jussi Lehtonen, Jonathan M Henshaw
Sedentary broadcast-spawning marine invertebrates, which release both eggs and sperm into the water for fertilization, are of special interest for sexual selection studies. They provide unique insight into the early stages of the evolutionary succession leading to the often-intense operation of both pre- and post-mating sexual selection in mobile gonochorists. Since they are sessile or only weakly mobile, adults can interact only to a limited extent with other adults and with their own fertilized offspring...
September 18, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28919821/prevalence-of-fertility-desire-and-its-associated-factors-among-15-to-49-year-old-people-living-with-hiv-aids-in-addis-ababa-ethiopia-a-cross-sectional-study-design
#6
Takele Menna Adilo, Hirut Megerssa Wordofa
BACKGROUND: The magnitude of unprotected sex to satisfy the desire for fertility among people living with HIV/AIDS (PLHIV) may rise more due to the availability of antiretroviral therapy (ART) in most HIV-affected countries. This could, however, have the risk of passing on HIV to sexual partners and children. The aim of this study, therefore, was to determine the magnitude and factors associated with the fertility desire of reproductive-age PLHIV in Addis Ababa, Ethiopia, for research-based and timely actions...
2017: HIV/AIDS: Research and Palliative Care
https://www.readbyqxmd.com/read/28919559/adipokinetic-hormone-receptor-gene-identification-and-its-role-in-triacylglycerol-mobilization-and-sexual-behavior-in-the-oriental-fruit-fly-bactrocera-dorsalis
#7
Qiu-Li Hou, Er-Hu Chen, Hong-Bo Jiang, Dan-Dan Wei, Shun-Hua Gui, Jin-Jun Wang, Guy Smagghe
Energy homeostasis requires continuous compensation for fluctuations in energy expenditure and availability of food resources. In insects, energy mobilization is under control of the adipokinetic hormone (AKH) where it is regulating the nutritional status by supporting the mobilization of lipids. In this study, we characterized the gene coding for the AKH receptor (AKHR) and investigated its function in the oriental fruit fly (Bactrocera dorsalis) that is economically one of the most important pest insects of tropical and subtropical fruit...
September 15, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28915111/the-effect-of-group-counseling-based-on-self-awareness-skill-on-sexual-risk-taking-among-girl-students-in-gorgan-iran-a-randomized-trial
#8
Golnoosh Kabiri, Tayebe Ziaei, Masumeh Rezaei Aval, Mohammad Ali Vakili
Background Sexual puberty in adolescents occurs before their mental and emotional maturity and exposes them to high-risk sexual behaviors. Because sexual risk-taking occurs before adolescents become involved in a sexual relationship, this study was conducted to identify the effect of group counseling based on self-awareness skill on sexual risk-taking among female high school students in Gorgan in order to suggest some preventative measures. Methods The present parallel study is a randomized field trial conducted on 96 girl students who were studying in grades 10, 11 and 12 of high school with an age range of 14-18 years old...
September 15, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28910231/professionals-attitude-toward-reporting-child-sexual-abuse-in-saudi-arabia
#9
Dalia M Al-Saif, Majid Al-Eissa, Hassan Saleheen, Huda Al-Mutlaq, Mark D Everson, Maha A Almuneef
Child sexual abuse (CSA) requires specialized knowledge and training that includes forensic interview skills. The aim of this study was to determine variations in professionals' attitudes toward CSA by measuring three aspects of forensic attitudes (sensitivity, specificity, and skepticism) and evaluating disagreements concerning the assessment of CSA cases in Saudi Arabia. A cross-sectional, web-based study, in which the Child Forensic Attitude Scale was used to measure professionals' attitudes, was conducted...
September 14, 2017: Journal of Child Sexual Abuse
https://www.readbyqxmd.com/read/28905723/breeding-and-rearing-naked-mole-rats-heterocephalus-glaber-under-laboratory-conditions
#10
Chenlin Yu, Shiyong Wang, Guoshi Yang, Shanmin Zhao, Lifang Lin, Wenjing Yang, Qiu Tang, Wei Sun, Shufang Cui
The unique biologic characteristics of naked mole-rats (NMR, Heterocephalus glaber) include longevity, cancer resistance, hypoxia tolerance, and pain insensitivity, making NMR an attractive model for biomedical research on aging, cancer, and neurobiology. However, breeding and rearing NMR in captivity is challenging. Here, we report a method for breeding NMR by using a closed-colony mating system. We selected sexually mature male and female NMR from different natal colonies and mated them 1:1. The 5 original colonies had an annual parity of 3...
January 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28904897/peyronie-s-graft-surgery-tips-and-tricks-from-the-masters-in-andrologic-surgery
#11
Georgios Hatzichristodoulou, Peter Tsambarlis, Hubert Kübler, Laurence A Levine
BACKGROUND: Grafting techniques in the surgical management of Peyronie's disease (PD) are challenging, especially in inexperienced hands. In order to improve surgical outcomes the urologist should follow a standard surgical approach, preferably of an established and reliable grafting technique. The aim of this study is to provide tips and tricks for graft surgery for PD. METHODS: This report offers a step-by-step tutorial for grafting techniques in PD, especially for the Sealing technique and the partial plaque excision and grafting (PEG) procedure...
August 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28904765/the-evolutionary-consequences-of-habitat-fragmentation-body-morphology-and-coloration-differentiation-among-brook-trout-populations-of-varying-size
#12
Carol Zastavniouk, Laura K Weir, Dylan J Fraser
A reduction in population size due to habitat fragmentation can alter the relative roles of different evolutionary mechanisms in phenotypic trait differentiation. While deterministic (selection) and stochastic (genetic drift) mechanisms are expected to affect trait evolution, genetic drift may be more important than selection in small populations. We examined relationships between mature adult traits and ecological (abiotic and biotic) variables among 14 populations of brook trout. These naturally fragmented populations have shared ancestry but currently exhibit considerable variability in habitat characteristics and population size (49 < Nc < 10,032; 3 < Nb < 567)...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28904748/the-complexity-of-mating-decisions-in-stalk-eyed-flies
#13
Nadine C Chapman, Penthai Siriwat, James Howie, Aaron Towlson, Lawrence Bellamy, Kevin Fowler, Andrew Pomiankowski
All too often, studies of sexual selection focus exclusively on the responses in one sex, on single traits, typically those that are exaggerated and strongly sexually dimorphic. They ignore a range of less obvious traits and behavior, in both sexes, involved in the interactions leading to mate choice. To remedy this imbalance, we analyze a textbook example of sexual selection in the stalk-eyed fly (Diasemopsis meigenii). We studied several traits in a novel, insightful, and efficient experimental design, examining 2,400 male-female pairs in a "round-robin" array, where each female was tested against multiple males and vice versa...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28904679/knowledge-attitudes-and-screening-practices-regarding-prostatic-diseases-among-men-older-than-40-years-a-population-based-study-in-southwest-nigeria
#14
Rufus Wale Ojewola, Ezekiel Sofela Oridota, Olanrewaju Samuel Balogun, Ezra Olatunde Ogundare, Taiwo Opeyemi Alabi, Oluseyi Omotola Banjo, Adeyinka Laoye, Babatunde Adetunmbi, Bamidele Oludele Adebayo, Rotimi Oluyombo
INTRODUCTION: Despite the global increase in awareness of prostatic diseases resulting from widespread availability of screening tools, there is no evidence that the knowledge, attitudes and screening practices of Nigerian men have improved regarding prostatic diseases. METHODS: A descriptive cross-sectional study amongst 305 community-dwelling men. Respondents were selected using multi-staged sampling techniques. Knowledge, attitudes and screening practices were determined based on responses to a semi-structured KAP questionnaire...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28903730/routine-monitoring-and-assessment-of-adults-living-with-hiv-results-of-the-british-hiv-association-bhiva-national-audit-2015
#15
A Molloy, H Curtis, F Burns, A Freedman
BACKGROUND: The clinical care of people living with HIV changed fundamentally as a result of the development of effective antiretroviral therapy (ART). HIV infection is now a long-term treatable condition. We report a national audit to assess adherence to British HIV Association guidelines for the routine investigation and monitoring of adult HIV-1-infected individuals. METHODS: All UK sites known as providers of adult HIV outpatient services were invited to complete a case-note review and a brief survey of local clinic practices...
September 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28903670/daily-autonomy-support-and-sexual-identity-disclosure-predicts-daily-mental-and-physical-health-outcomes
#16
Nicole Legate, Richard M Ryan, Ronald D Rogge
Using a daily diary methodology, we examined how social environments support or fail to support sexual identity disclosure, and associated mental and physical health outcomes. Results showed that variability in disclosure across the diary period related to greater psychological well-being and fewer physical symptoms, suggesting potential adaptive benefits to selectively disclosing. A multilevel path model indicated that perceiving autonomy support in conversations predicted more disclosure, which in turn predicted more need satisfaction, greater well-being, and fewer physical symptoms that day...
June 2017: Personality & Social Psychology Bulletin
https://www.readbyqxmd.com/read/28901006/reproductive-aspects-of-the-atlantic-angel-shark-squatina-dumeril-in-the-southern-caribbean-sea
#17
A Tagliafico, S Rangel, M K Broadhurst
The maturity and reproduction of the Atlantic angel shark Squatina dumeril were assessed using 77 females (29·2-110·4 cm total length; LT ) and 269 males (58·7-108·2 cm LT ) harvested by artisanal gillnetters off Venezuela. The biased sex ratio implied segregation or sex-specific gear selectivity. Based on the development of the reproductive tract, 50% LT at sexual maturity (LT50 , mean ± s.e.) for females and males were estimated at 86·14 ± 0·64 and 81·55 ± 0·12 cm, respectively...
September 12, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28899756/stability-based-sorting-the-forgotten-process-behind-not-only-biological-evolution
#18
Jan Toman, Jaroslav Flegr
Natural selection is considered to be the main process that drives biological evolution. It requires selected entities to originate dependent upon one another by the means of reproduction or copying, and for the progeny to inherit the qualities of their ancestors. However, natural selection is a manifestation of a more general persistence principle, whose temporal consequences we propose to name "stability-based sorting" (SBS). Sorting based on static stability, i.e., SBS in its strict sense and usual conception, favours characters that increase the persistence of their holders and act on all material and immaterial entities...
September 9, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28895803/-otis-a-case-study-of-an-online-attempt-to-purchase-children-for-sex
#19
Stacey Diane A Litam, Jesse Bach
The researchers analyzed court documents to develop a case study of an individual convicted of buying sexual services from exploited children. Findings indicate that the subject deviates from preexisting victim selection processes and demonstrates characteristics inconsistent with existing sexual offender typologies that likens offender behaviors to the hunting techniques and behaviors of predatory animals. As evidenced in the case study, the individual perceived the victims solely as a means of deviant sexual satiation and did not participate in traditionally established victim acquisition techniques...
September 12, 2017: Journal of Child Sexual Abuse
https://www.readbyqxmd.com/read/28895801/prevalence-of-sexual-assault-victimization-among-college-men-aged-18-24-a-review
#20
R Lane Forsman
PURPOSE: The current review provides summary and evaluation of prevalence data for the sexual victimization of college men ages 18 - 24. METHODS: Potential studies were selected by searching electronic bibliographic databases. Studies were initially selected for inclusion if they (1) assessed prevalence rates of sexual victimization on college campuses and (2) were published in a scholarly journal (3) in the English language. Utilizing this strategy, 3,973 studies were initially identified, of which 5 underwent complete review...
September 12, 2017: Journal of Evidence-informed Social Work
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