Results 31 to 40 of about 726,910 (390)

How sperm competition shapes the evolution of testes and sperm: a meta-analysis

Philosophical Transactions of the Royal Society of London. Biological Sciences, 2020
Females of many species mate with multiple males, thereby inciting competition among ejaculates from rival males for fertilization. In response to increasing sperm competition, males are predicted to enhance their investment in sperm production.
S. Lüpold, Raïssa A. de Boer, J. Evans, J. L. Tomkins, J. Fitzpatrick   +4 more
semanticscholar   +1 more source

Sperm mobility: mechanisms of fertilizing efficiency, genetic variation and phenotypic relationship with male status in the domestic fowl, Gallus gallus domesticus [PDF]

, 2002
When females are sexually promiscuous, sexual selection continues after insemination through sperm competition and cryptic female choice, and male traits conveying an advantage in competitive fertilization are selected for. Although individual male and
Allen J Feltmann, David P Froman, Hector Castillo-Juarez, Pizzari T., Sullivan M. S., Tim R Birkhead, Tommaso Pizzari   +6 more
core   +2 more sources

Gene sequencing and result analysis of balanced translocation carriers by third-generation gene sequencing technology

Scientific Reports, 2023
Because the total gene copy number remains constant and all genes are normally expressed, carriers of balanced chromosomal translocations usually have a normal phenotype but are able to produce many different types of gametes during meiosis, and ...
Xiaoqi Zeng, Dandan Lin, Danhong Liang, Jingwen Huang, Jinsong Yi, Dianliang Lin, Zhengmian Zhang   +6 more
doaj   +1 more source

Sperm design and variation in the New World blackbirds (Icteridae) [PDF]

, 2009
Post-copulatory sexual selection (PCSS) is thought to be one of the evolutionary forces responsible for the rapid and divergent evolution of sperm design. However, whereas in some taxa particular sperm traits are positively associated with PCSS, in other
AF Malo, AF Malo, AF Malo, BGM Jamieson, CK Cornwallis, CW LaMunyon, CW LaMunyon, D Urbach, DF Katz, DP Froman, DR Levitan, E García-Berthou, EH Morrow, EH Morrow, EJ Pellatt, EP Martins, G Arnqvist, G Burness, GA Parker, GA Parker, GA Parker, GA Parker, George M. Linz, GT Miller, HDM Moore, J Cohen, J Felsenstein, J Sivinski, JA Stoltz, JH Samour, JJL Higdon, JL Fitzpatrick, JL Fitzpatrick, JV Briskie, JV Briskie, L Locatello, LK Dybas, LZ Garamszegi, M Gomendio, M Pagel, MD Pagel, MJ Anderson, MJG Gage, MJG Gage, MJG Gage, MJG Gage, N Minoretti, O Kleven, PG Byrne, PH Harvey, PH Harvey, PI Ward, R Thornhill, RA Beatty, RA Beatty, RA Cardullo, RP Freckleton, RR Snook, S Balshine, S Calhim, S Calhim, S Humphries, S Immler, S Immler, S Immler, S Immler, S Lüpold, S Lüpold, S Pitnick, Stefan Lüpold, T Garland, T Pizzari, TE Pitcher, Tim R. Birkhead, TR Birkhead, TR Birkhead, WE Harris, WG Eberhard, WG Eberhard, WH Burrows, WV Holt, Å Franzén   +81 more
core   +2 more sources

Does air pollution exposure affect semen quality? Evidence from a systematic review and meta-analysis of 93,996 Chinese men

Frontiers in Public Health, 2023
BackgroundAir pollution may impair male fertility, but it remains controversial whether air pollution affects semen quality until now.ObjectivesWe undertake a meta-analysis to explore potential impacts of six pollutants exposure during the entire window (
Junjie Liu, Yanpeng Dai, Runqing Li, Jiayi Yuan, Quanxian Wang, Linkai Wang   +5 more
doaj   +1 more source

Psychological and physiological adaptations to sperm competition in humans [PDF]

, 2005
Postcopulatory competition between males, in the form of sperm competition, is a widespread phenomenon in many animal species. The extent to which sperm competition has been an important selective pressure during human evolution remains controversial ...
Goetz, AT, Pound, N, Shackelford, TK
core   +2 more sources

Sperm

lambda nordica, 2020
See full-text ...
openaire   +3 more sources

Jiawei Runjing Decoction Improves Spermatogenesis of Cryptozoospermia With Varicocele by Regulating the Testicular Microenvironment: Two-Center Prospective Cohort Study

Frontiers in Pharmacology, 2022
Objective: The aim of the study was to explore the evidence of JWRJD in the treatment of cryptozoospermia.Methods: A total of 162 cryptozoospermia patients with varicocele who refused to undergo surgery were included from January 2021 to December 2021 ...
Huang Liu, Huang Liu, Zhongwang Huang, Houbin Zheng, Zhiyong Zhu, Hui Yang, Xingzhang Liu, Tao Pang, Liping He, Hai Lin, Lei Hu, Qingqi Zeng, Qingqi Zeng, Lanying Han   +13 more
doaj   +1 more source

Dnmt2 mediates intergenerational transmission of paternally acquired metabolic disorders through sperm small non-coding RNAs

Nature Cell Biology, 2018
The discovery of RNAs (for example, messenger RNAs, non-coding RNAs) in sperm has opened the possibility that sperm may function by delivering additional paternal information aside from solely providing the DNA1.
Yunfang Zhang, Xudong Zhang, Junchao Shi, F. Tuorto, Xin Li, Yusheng Liu, Reinhard Liebers, Liwen Zhang, Yongcun Qu, Jingjing Qian, Maya Pahima, Y. Liu, Menghong Yan, Zhonghong Cao, Xiaohua Lei, Yu-jing Cao, Hongying Peng, Shichao Liu, Yue Wang, Huili Zheng, Rebekah J. Woolsey, D. Quilici, Q. Zhai, Lei Li, T. Zhou, Wei Yan, F. Lyko, Ying Zhang, Qi Zhou, E. Duan, Qi Chen   +30 more
semanticscholar   +1 more source

Human sperm ion channel (dys)function:implications for fertilization [PDF]

, 2019
BACKGROUND: Intensive research on sperm ion channels has identified members of several ion channel families in both mouse and human sperm. Gene knock-out studies have unequivocally demonstrated the importance of the calcium and potassium conductances in ...
Barratt, Christopher L. R., Brown, Sean G., Martins da Silva, Sarah J., Publicover, Stephen J.   +3 more
core   +3 more sources