Results 221 to 230 of about 605,989 (306)

The “costly son” hypothesis: Sons exacerbate obstetrical dilemmas in humans and other mammals

The Anatomical Record, EarlyView.
Abstract Human childbirth has often been considered uniquely difficult among mammals, yet recent evidence suggests that obstructed labor and fetopelvic disproportion are widespread across placental mammals. Here, we propose the “costly son” hypothesis: because male offspring are typically larger at birth, they impose greater obstetric risk on mothers ...
Nicole D. S. Grunstra, Jonathan C. K. Wells   +1 more
wiley   +1 more source

Are women cryopreserving enough oocytes for fertility preservation? A probabilistic model integrating AI-based oocyte morphology and age-dependent euploidy. [PDF]

Hum Reprod Open
Braga DPAF, Setti AS, Del Collado M, Fjeldstad J, Mojiri P, Cavagnoli M, Borges E.   +6 more
europepmc   +1 more source

Hormonal control and signaling of the testis of the bat Molossus molossus during the processes of testicular maturation, regression, and recrudescence

The Anatomical Record, EarlyView.
Abstract Molossus molossus, a species of neotropical bat belonging to the Molossidae family, has an annual reproductive cycle that includes two peaks of spermatogenic activity, one in April and another in September, and a period of total testicular regression in December.
Emília M. Soares, Juliana F. Ferraz, Cornélio S. Santiago, Larissa P. R. Venâncio, Arlindo G. Macedo‐Junior, Sebastião R. Taboga, Mateus R. Beguelini   +6 more
wiley   +1 more source

Ursolic Acid Alleviates Orchitis via Modulating Ferroptosis in Peritubular Myoid Cells of Testis

Animal Research and One Health, EarlyView.
Ursolic acid modulates key ferroptosis‐related pathways in the peritubular myoid cells of the testis in forest musk deer. ABSTRACT Chronic stress adversely affects reproductive health, increasing susceptibility to pathologies such as orchitis. Additionally, the maintenance of iron homeostasis is essential for preserving the function of the testicles ...
Yang Wang, Tianqi Jin, Zexin Chen, Ye Gong, Qimin Liu, Zifang Wu, Heran Cao, Yan Li, Yuyan Liu, Tianhao Yang, Zhihong Jiang, Wuzi Dong   +11 more
wiley   +1 more source

Ethical perspectives of fertility preservation through experts' opinions. [PDF]

Front Reprod Health
Aleksandrova-Yankulovska S, Orzechowski M, Hancke K, Bundschu K, Steger F.   +4 more
europepmc   +1 more source

Genomic Structural Variations Provide Insights Into Litter Size and Teat Number Traits in Hu Sheep

Animal Research and One Health, EarlyView.
Here, we conducted whole genome sequencing on 300 Hu sheep with an average depth of 16.51X. Two candidate genes associated with litter size and teat number traits were identified, namely MAST2 and AFDN. ABSTRACT Litter size and the teat number are important economic indicators in sheep production.
Xin Xiang, Wei Dai, Jiqiang Liu, Zhengguang Wang   +3 more
wiley   +1 more source

How Many Children in a Family? Fertility Ideals and Gender Equality Norms in 26 Societies. [PDF]

Eur J Popul
Edlund J, Öun I.
europepmc   +1 more source

Heat Stress in Quail: Impacts on Health and Productivity, and Mitigation Strategies

Animal Research and One Health, EarlyView.
Heat stress disrupts physiological homeostasis in quail, inducing oxidative stress, immune dysregulation, and metabolic imbalance, which impair growth, reproduction, product quality, and welfare. Integrating nutritional, environmental, and genetic–epigenetic strategies enhances thermotolerance, sustains productivity, and supports climate‐smart quail ...
T. A. Eletu, I. A. Anjola, L. O. Fasasi, D. P. Fadipe, A. T. Afuye, F. O. Fasanya, O. E. Oke   +6 more
wiley   +1 more source

Fertility in Ethiopia: factors associated with the number of live births -a survey-adjusted poisson regression analysis of the 2019 ethiopian mini demographic and health survey. [PDF]

Front Reprod Health
Mesfin MD, Wondu AY, Galgalo DA, Atmaca L, Buda Á, Prémusz V.   +5 more
europepmc   +1 more source