Female zebra finches may be influenced by the choices of other females when selecting mates, challenging the view that mate-choice copying should not occur in species with biparental care.
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http://dx.doi.org/10.1016/j.cub.2005.08.005 | DOI Listing |
BMC Infect Dis
January 2025
Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran.
Background: Herpes simplex virus type 2 (HSV-2) is a common sexually transmitted infection (STI) primarily acquired through sexual contact. In 2000, the World Health Organization (WHO) for the first time reported the association of STIs with male infertility. Infertility is described as the inability to achieve a clinical pregnancy after engaging in regular, unprotected sexual intercourse for a year or more.
View Article and Find Full Text PDFJ Med Internet Res
January 2025
College of Public Health, The Ohio State University, Columbus, OH, United States.
Background: Young gay, bisexual, and other men who have sex with men have been referred to as a "hard-to-reach" or "hidden" community in terms of recruiting for research studies. With widespread internet use among this group and young adults in general, web-based avenues represent an important approach for reaching and recruiting members of this community. However, little is known about how participants recruited from various web-based sources may differ from one another.
View Article and Find Full Text PDFEvol Anthropol
March 2025
Center for the Advanced Study of Human Paleobiology, George Washington University, Washington DC, USA.
Sexual dimorphism is one of the main factors confounding attempts to generate sound alpha taxonomic hypotheses in the early hominin fossil record. To better understand how between-sex variation may confound alpha taxonomic assessments, we consider some of the factors that drive hard-tissue sexual dimorphism in extant primates. We review the socioecological correlates of body size sexual dimorphism, how sexual selection may be associated with craniofacial sexual dimorphism in the context of visual signaling, and how sex-specific patterns of growth and development in primates contribute to intra-specific variation.
View Article and Find Full Text PDFScience
January 2025
Department of Neurobiology and Behavior, Cornell University, Ithaca, NY, USA.
Contingency (or "luck") in early life plays an important role in shaping individuals' development. By comparing the developmental trajectories of functionally genetically identical free-living mice who either experienced high levels of resource competition (males) or did not (females), we show that competition magnifies early contingency. Male resource competition results in a feedback loop that magnifies the importance of early contingency and pushes individuals onto divergent, self-reinforcing life trajectories, while the same process appears absent in females.
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