Results 51 to 60 of about 161,421 (174)

Clinal Variation in Reproductive Modes and Offspring Body Condition Across a Contact Zone of a Bimodal Viviparous Salamander

open access: yesEcology and Evolution, Volume 16, Issue 3, March 2026.
We examined clinal gradients in reproductive modes and associated offspring body condition across a hybrid zone between two bimodal viviparous subspecies of Salamandra salamandra. We found a clear cline in reproductive modes, with pure modes at the extremes and mixed modes in central populations.
Clara Figueiredo‐Vázquez   +2 more
wiley   +1 more source

Determinants of male reproductive success in wild long-tailed macaques (Macaca fascicularis)—male monopolisation, female mate choice or post-copulatory mechanisms? [PDF]

open access: yes
One of the basic principles of sexual selection is that male reproductive success should be skewed towards strong males in species with anisogamous sex. Studies on primate multi-male groups, however, suggest that other factors than male fighting ability ...
Engelhardt, A   +4 more
core   +1 more source

Alpha male replacements and delayed dispersal in crested macaques (Macaca nigra). [PDF]

open access: yes, 2015
In species with a high male reproductive skew, competition between males for the top dominant position is high and escalated fights are common between competitors. As a consequence, challenges incur potentially high costs.
Alberts   +44 more
core   +1 more source

Effect of Probiotic Supplementation on Reproductive Outcomes of Women With Polycystic Ovary Syndrome Who Are Candidates for Intrauterine Insemination: A Randomized, Double‐Blind, Placebo‐Controlled Trial

open access: yesEndocrinology, Diabetes &Metabolism, Volume 9, Issue 2, March 2026.
Probiotic supplementation for 8 weeks in women with PCOS who were candidates for IUI was associated with higher endometrial thickness, indicating a potential role in improving endometrial receptivity. ABSTRACT Introduction Evidence showed that microbial dysbiosis may lead to poor fertility outcomes. Today, therapy with probiotics, especially when using
Tahereh Behroozilak   +2 more
wiley   +1 more source

Evaluating Potential Effects of Chamomile (Matricaria chamomilla L.) in Polycystic Ovary Syndrome: A Systematic Review and Meta‐Analysis

open access: yesFood Science &Nutrition, Volume 14, Issue 3, March 2026.
Chamomile contains different bioactive agents such as flavonoids and phytosterols with potential anti‐inflammatory, antioxidant, analgesic, antispasmodic, and antitumor characteristics. According to our findings, animal studies have demonstrated the potential benefits of Chamomile consumption in the treatment of PCOS. In contrast, human studies yielded
Zahra Firoozi   +3 more
wiley   +1 more source

Designing Memristive Materials for Artificial Dynamic Intelligence

open access: yesAdvanced Intelligent Discovery, Volume 2, Issue 1, February 2026.
Key characteristics required of memristors for realizing next‐generation computing, along with modeling approaches employed to analyze their underlying mechanisms. These modeling techniques span from the atomic scale to the array scale and cover temporal scales ranging from picoseconds to microseconds. Hardware architectures inspired by neural networks
Youngmin Kim, Ho Won Jang
wiley   +1 more source

Possible evolutionary origins of human female sexual fluidity [PDF]

open access: yes, 2016
I propose an evolutionary theory of human female sexual fluidity and argue that women may have been evolutionarily designed to be sexually fluid in order to allow them to have sex with their cowives in polygynous marriage and thus reduce conflict and ...
Kanazawa, Satoshi
core   +1 more source

On the evolution of sexual receptivity in female primates

open access: yesScientific Reports, 2019
There has been much interest in the evolutionary forces responsible for, and underlying the diversity in, female primate reproductive cycles. While there has been limited research on sexual receptivity in primates, this has been one recurring topic of ...
Kelly Rooker, S. Gavrilets
semanticscholar   +1 more source

Variability in sperm form and function in the context of sperm competition risk in two Tupinambis lizards [PDF]

open access: yes, 2014
In polyandrous species, sperm morphometry and sperm velocity are under strong sexual selection. Although several hypotheses have been proposed to explain the role of sperm competition in sperm trait variation, this aspect is still poorly understood.
Blengini, Cecilia Soledad   +4 more
core   +1 more source

On the Origin of the Family [PDF]

open access: yes
This paper presents an overlapping generations model to explain why humans live in families rather than in other pair groupings. Since most non-human species are not familial, something special must be behind the family.
Francesconi, Marco   +2 more
core  

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