Article
Agriculture, Dairy & Animal Science
Fei Zhang, Xiaodong Zhang, Wei Ning, Xiangdong Zhang, Zhenyuan Ru, Shiqi Wang, Mei Sheng, Junrui Zhang, Xueying Zhang, Haiqin Luo, Xin Wang, Zubing Cao, Yunhai Zhang
Summary: Circular RNAs (circRNAs) are abundantly expressed in boar testes and exhibit dynamic changes during testicular development. They are mainly involved in regulating spermatogenesis, cilia motility, and hormone biosynthesis, which indicates their potential as molecular markers for breeding of elite boars and evaluating developmental status of boar testes.
Article
Sport Sciences
Taline Costa, Pedro Murara, Rodrigo Luiz Vancini, Claudio Andre Barbosa de Lira, Marilia Santos Andrade
Summary: The study compared strength and muscle mass evolution in male and female swimmers of different ages. It found significant differences in strength and muscle mass among different pubertal stages in boys but not in girls. Therefore, grouping boys based on pubertal development levels rather than chronological age may be a more effective strategy.
JOURNAL OF HUMAN KINETICS
(2021)
Article
Multidisciplinary Sciences
Emilie R. Hegelund, Thomas W. Teasdale, Gunhild T. Okholm, Merete Osler, Thorkild I. A. Sorensen, Kaare Christensen, Erik L. Mortensen
Summary: This study investigated the secular trend of intelligence test scores among young Danish men born between 1940 and 2000, and found possible associations with changes in family size, nutrition, education, and intelligence test score variability. Results demonstrated an increase in mean IQ scores from individuals born in 1940 to those born in 1980, followed by a decrease. Factors such as family size, height, and education were found to explain a significant proportion of the variance in mean intelligence test scores among the birth cohorts of 1940-1980.
Article
Anthropology
Lorenzo Lolli, Valter Di Salvo, Mauricio Monaco, Amanda Johnson, Warren Gregson
Summary: This study assessed the agreement between FELS and Tanner-Whitehouse II skeletal ages in male youth soccer players from the Middle East. The results showed a mean difference of 0.02 years between the two methods, with a range of -1.39 to 1.43 years for the limits of agreement. The findings suggest that there may be differences in skeletal age determination between FELS and Tanner-Whitehouse II methods in youth Middle Eastern athletes.
AMERICAN JOURNAL OF HUMAN BIOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
D. O. Kleemann, J. M. Kelly, L. J. Arney, J. Len, A. J. Tilbrook, S. K. Walker
Summary: The study tested the hypothesis that variability in reproductive response to melatonin treatment in young Border Leicester rams in spring is related to sexual maturity at the time of treatment. Results showed that melatonin treatment can reduce variability in age at sexual maturity in spring mating, associated with differences in sexual behavior, testicular growth, testosterone concentrations, and sperm quality.
ANIMAL REPRODUCTION SCIENCE
(2021)
Article
Cell Biology
Eliana Pintus, Martin Kadlec, Barbora Karlasova, Marek Popelka, Jose Luis Ros-Santaella
Summary: Research findings show that adult tomcats have higher epididymal sperm concentration and better sperm morphology compared to post-pubertal tomcats, but there is no significant difference in testicular and epididymal mass, spermatogenesis, and other sperm traits between the two age groups.
Article
Zoology
Jodie M. Wiggins, Jamie Landers, Justin W. Agan, Stanley F. Fox
Summary: In many species, males are larger and more colorful than females. However, in Collared Lizards, juveniles display a different kind of sexual dichromatism compared to adults.
Article
Fisheries
Hesam Sephid, Negin Salamat, Mohammad Ali Salari
Summary: The study assessed the reproductive biology of male brown banded bamboo sharks by examining morphological and histological changes in the reproductive tract and testosterone levels in the gonads. Four sexual development stages were identified, with variations in testicular structure and sperm production at different stages. Testosterone concentrations were found to peak in active males and decrease significantly in resting males, indicating a correlation between hormone levels and reproductive tract morphology.
MARINE AND FRESHWATER RESEARCH
(2021)
Article
Criminology & Penology
Alisha C. Salerno-Ferraro, Caroline Erentzen, Regina A. Schuller
Summary: The study examined the experiences of university-aged women with online male-perpetrated sexual harassment, finding that most women received sexually inappropriate messages on online platforms and chose to ignore or delete the content as a response. However, some men persisted with the harassment, leading to women deleting their social media accounts in some cases. The results suggest a need for early intervention and education programs to address this issue.
JOURNAL OF INTERPERSONAL VIOLENCE
(2022)
Article
Nursing
Suyong Jeong, Hyoung Eun Chang
Summary: Male nurses in South Korea face a high prevalence of workplace sexual harassment, with the nursing work environment being a significant predictor.
Article
Geriatrics & Gerontology
Joan M. Cook, Monica Cations, Vanessa Simiola, Amy E. Ellis, Chyrell Bellamy, Steve Martino
Summary: This study compares the sexual abuse histories and depressive symptoms between different age groups of sexual and gender minority (SGM) male survivors. The results show that older SGM men have lower rates of adult sexual assault, exposure to other traumas, and depression. However, there are no differences between the older and younger groups in childhood sexual assault, frequency and number of attackers for adult sexual assault, frequency of other injury traumas, or occurrence and frequency of mental health treatment. Trauma load, including childhood and adult sexual assault, is more strongly related to current depressive symptoms than age group.
AMERICAN JOURNAL OF GERIATRIC PSYCHIATRY
(2023)
Review
Criminology & Penology
Travis N. Ray, Michele R. Parkhill
Summary: This systematic review examines the association between hostile masculinity and male-perpetrated sexual aggression toward women. The review finds broad support for this association and suggests that prevention efforts should focus on modifying hostile masculine characteristics among men. However, the review also highlights the need for a uniform conceptualization and operational definition of hostile masculinity.
TRAUMA VIOLENCE & ABUSE
(2023)
Article
Ecology
Susumu Chiba, Aya Iwamoto, Seina Shimabukuro, Hiroyuki Matsumoto, Karin Inoue
Summary: Adult sex ratio (ASR) is crucial for population management, but its impact on population dynamics is still not well understood. This study investigated the effect of biased ASR on reproductive success in a decapod crustacean. The results showed that an increase in the proportion of males in mating groups led to a decrease in the number of eggs carried by females. This negative effect of ASR was observed at the population level when considering spawning success. Additionally, a male-biased ASR was found to reduce genetic diversity in the population. These findings highlight the importance of considering ASR in population management strategies.
JOURNAL OF ANIMAL ECOLOGY
(2023)
Article
Criminology & Penology
Lindsay M. Orchowski, Daniel W. Oesterle, Cristobal S. Berry-Caban, Brian Borsari, Christopher W. Kahler, Donna M. Kazemi, Alan D. Berkowitz
Summary: Sexual violence is a serious concern in the U.S. military, with limited research on the risk factors for sexual aggression perpetration. This study evaluated the applicability of the Confluence Model of Sexual Aggression among young adult men in the U.S. Army. Surveys completed by 326 male soldiers revealed that hostile masculinity and tendency toward impersonal sex were associated with greater perceived likelihood of sexual aggression. The findings help identify those at risk and inform prevention efforts.
JOURNAL OF INTERPERSONAL VIOLENCE
(2023)
Article
Public, Environmental & Occupational Health
Matthias Jahnen, Leopold Zeng, Martina Kron, Valentin H. Meissner, Alexander Korte, Stefan Schiele, Helga Schulwitz, Andreas Dinkel, Juergen E. Gschwend, Kathleen Herkommer
Summary: The study found that a majority of male medical students consume pornography frequently, while only 7.3% of female students do so. It also revealed that students who were inspired by pornography and those who have had experiences such as anal intercourse or threesomes tend to consume pornography more frequently.
