Academic literature on the topic 'Sperrm competition'
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Journal articles on the topic "Sperrm competition"
André, Gonçalo I., Renée C. Firman, and Leigh W. Simmons. "Phenotypic plasticity in genitalia: baculum shape responds to sperm competition risk in house mice." Proceedings of the Royal Society B: Biological Sciences 285, no. 1882 (July 11, 2018): 20181086. http://dx.doi.org/10.1098/rspb.2018.1086.
Full textLüke, Lena, Polly Campbell, María Varea Sánchez, Michael W. Nachman, and Eduardo R. S. Roldan. "Sexual selection on protamine and transition nuclear protein expression in mouse species." Proceedings of the Royal Society B: Biological Sciences 281, no. 1783 (May 22, 2014): 20133359. http://dx.doi.org/10.1098/rspb.2013.3359.
Full textChampion de Crespigny, Fleur E., and Nina Wedell. "Wolbachia infection reduces sperm competitive ability in an insect." Proceedings of the Royal Society B: Biological Sciences 273, no. 1593 (March 21, 2006): 1455–58. http://dx.doi.org/10.1098/rspb.2006.3478.
Full textHoysak, Drew J., N. Robin Liley, and Eric B. Taylor. "Raffles, roles, and the outcome of sperm competition in sockeye salmon." Canadian Journal of Zoology 82, no. 7 (July 1, 2004): 1017–26. http://dx.doi.org/10.1139/z04-073.
Full textEngqvist, Leif, and Klaus Reinhold. "Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates." Proceedings of the Royal Society B: Biological Sciences 274, no. 1607 (November 7, 2006): 209–17. http://dx.doi.org/10.1098/rspb.2006.3722.
Full textVuarin, Pauline, Yves Hingrat, Loïc Lesobre, Michel Saint Jalme, Frédéric Lacroix, and Gabriele Sorci. "Sperm competition accentuates selection on ejaculate attributes." Biology Letters 15, no. 3 (March 2019): 20180889. http://dx.doi.org/10.1098/rsbl.2018.0889.
Full textSingson, Andrew, Katherine L. Hill, and Steven W. L’Hernault. "Sperm Competition in the Absence of Fertilization in Caenorhabditis elegans." Genetics 152, no. 1 (May 1, 1999): 201–8. http://dx.doi.org/10.1093/genetics/152.1.201.
Full textSloan, Nadia S., Maxine Lovegrove, and Leigh W. Simmons. "Social manipulation of sperm competition intensity reduces seminal fluid gene expression." Biology Letters 14, no. 1 (January 2018): 20170659. http://dx.doi.org/10.1098/rsbl.2017.0659.
Full textFirman, Renée C., and Leigh W. Simmons. "Sperm midpiece length predicts sperm swimming velocity in house mice." Biology Letters 6, no. 4 (February 10, 2010): 513–16. http://dx.doi.org/10.1098/rsbl.2009.1027.
Full textParker, Geoff A., and Jussi Lehtonen. "Gamete evolution and sperm numbers: sperm competition versus sperm limitation." Proceedings of the Royal Society B: Biological Sciences 281, no. 1791 (September 22, 2014): 20140836. http://dx.doi.org/10.1098/rspb.2014.0836.
Full textDissertations / Theses on the topic "Sperrm competition"
Meunier, Léna. "Reproductive biology and senescence impact on postcopulatory sexual selection in a wild polyandrous bird, the North African Houbara Bustard (Chlamydotis undulata undulata)." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCK028.
Full textPolyandry, when females mate with multiple males, increases the opportunity for sexual selection to operate, because in addition to competition between males for access to the female (pre-copulatory sexual selection), sperm from different males also compete for fertilization (post-copulatory sexual selection). This often results in most offspring being sired by the last male, a phenomenon called last male precedence (LMP). In addition to mating order, sperm quantity and quality can also influence the outcome of sperm competition. As males age, sperm quality and quantity decrease, resulting in reduced reproductive success. In the North African Houbara Bustard (Chlamydotis undulata undulata), females are polyandrous, and males suffer from reproductive senescence. The thesis aims at improving our understanding of the reproductive biology of houbara bustards, reproductive senescence and its impact on male reproductive success and post-copulatory selection.In the first part, to improve the knowledge of the species’ physiology of reproduction and to construct a solid base for houbara reproductive anatomy and sperm morphology and later storage mechanism in the female tract, we explored anatomy and histology of the female and male reproductive systems during and out of the breeding season and sperm morphology was described. In the second part, we investigated the underlying mechanisms of LMP and the storage dynamics within the oviduct during competitive inseminations. In the third part, we investigated male reproductive senescence and its relationship with post-copulatory selection. This work was divided into four sections to investigate different aspects of reproductive ageing. Firstly, we examined seasonal testosterone levels and a possible age-related pattern. Second, we investigated a possible trade-off between sperm number and quality across ages. Thirdly, to test male age, sperm age, and their possible interaction on sperm quality and reproductive success, sperm ageing in the male tract was investigated by controlling the timing of collection intervals for young and old males. Finally, LMP was studied under controlled experimental conditions to disentangle the effects of male age, mating order, and sperm quality on siring success.This thesis presents the first description of houbara reproductive anatomy and histology and sperm morphology classification. Active sperm displacement is likely to be the main mechanism of LMP. There was no evidence of an age-related pattern of testosterone levels throughout the breeding season. Peak testosterone levels preceded peaks in sexual behaviour and sperm characteristics. We found a positive covariation between sperm quantity and several sperm quality traits, and male age did not influence the strength of this covariation. No evidence of sperm ageing during prolonged storage in the male tract was observed. On the contrary, sperm collected at longer intervals had higher quality, which was reflected in higher hatching success. Consistent with previous work, older males had lower sperm number, volume, motility and velocity and sired offspring with impaired growth rate. Finally, we found no evidence of an age effect on LMP. Regardless of age, sperm from the last male in the insemination sequence sired approximately 60% of the offspring. Overall, this work has provided a better understanding and new insights into the reproductive biology of houbara bustards and the mechanisms of post copulatory selection
Siva-Jothy, M. T. "Sperm competition in the odonata." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370301.
Full textEady, Paul E. "Sperm competition in Callosobruchus maculatus." Thesis, University of Sheffield, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263760.
Full textFryer, Timothy James Osborne. "ESS models of sperm competition." Thesis, University of Sheffield, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266803.
Full textGilbert, Lucy. "Sperm competition in the western gull." Thesis, University of Sheffield, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389759.
Full textCook, Penelope Anne. "Sperm competition in butterflies and moths." Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307641.
Full textLovell-Mansbridge, Claire. "Sperm competition in the feral pigeon Columba livia." Thesis, University of Sheffield, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364193.
Full textHunter, Fiona M. "Sperm competition in the Northern fulmar (Fulmaris glacialis)." Thesis, University of Sheffield, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304668.
Full textRamm, Steven Andrew. "Sperm competition and its evolutionary consequences in rodents." Thesis, University of Liverpool, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436259.
Full textPreston, Brian T. "Sexual selection and sperm competition in Soay sheep." Thesis, University of Stirling, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391526.
Full textBooks on the topic "Sperrm competition"
Watanabe, Mamoru. Sperm Competition in Butterflies. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55945-0.
Full textA, Bellis Mark, ed. Human sperm competition: Copulation, masturbation, and infidelity. London: Chapman & Hall, 1995.
Find full textBaker, R. R. Human sperm competition: Copulation, masturbation, and infertility. London: Chapman and Hall, 1993.
Find full text1971-, Shackelford Todd K., and Pound Nicholas 1971-, eds. Sperm competitions in humans: Classic and contemporary readings. New York, NY: Springer, 2006.
Find full textFu, Peng. Sperm competition and alternative mating tactics in bluegill sunfish. Ottawa: National Library of Canada, 2000.
Find full textE, Johnson J. Spearfishing competitions in South Australia, 1983-1984. Adelaide, S. Aust: Dept. of Fisheries, 1985.
Find full textAshok, Agarwal, Borges Edson, and Amanda S. Setti. Non-invasive sperm selection for in vitro fertilization: Novel concepts and methods. New York: Springer, 2015.
Find full textWatanabe, Mamoru. Sperm Competition in Butterflies. Springer, 2018.
Find full textShackelford, Todd K., and Nicholas Pound, eds. Sperm Competition in Humans. Springer US, 2006. http://dx.doi.org/10.1007/0-387-28039-1.
Full textShackelford, Todd K., and Nicholas Pound, eds. Sperm Competition in Humans. Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-28039-4.
Full textBook chapters on the topic "Sperrm competition"
DeLecce, Tara. "Sperm Competition." In Encyclopedia of Personality and Individual Differences, 5156–58. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-24612-3_1269.
Full textMcKibbin, William F. "Sperm Competition." In Encyclopedia of Evolutionary Psychological Science, 1–3. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-16999-6_73-1.
Full textDurrant, Kate L. "Sperm Competition." In Encyclopedia of Animal Cognition and Behavior, 6620–33. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-319-55065-7_438.
Full textDeLecce, Tara. "Sperm Competition." In Encyclopedia of Personality and Individual Differences, 1–3. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28099-8_1269-1.
Full textDurrant, Kate L. "Sperm Competition." In Encyclopedia of Animal Cognition and Behavior, 1–14. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-47829-6_438-1.
Full textCordero-Rivera, Adolfo. "Sperm Competition." In Reproductive Strategies in Insects, 205–24. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003043195-10.
Full textMcKibbin, William F. "Sperm Competition." In Encyclopedia of Evolutionary Psychological Science, 7859–61. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-19650-3_73.
Full textBaer, Boris. "Sperm Competition." In Encyclopedia of Social Insects, 872–75. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-28102-1_114.
Full textBaer, Boris. "Sperm Competition." In Encyclopedia of Social Insects, 1–5. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-90306-4_114-1.
Full textKelly, Clint D., and Michael D. Jennions. "Sperm Competition Theory." In Encyclopedia of Evolutionary Psychological Science, 1–16. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-16999-6_1941-1.
Full textConference papers on the topic "Sperrm competition"
Khan, H., M. Alam, S. Al-Kuwari, and Y. Faheem. "OFFENSIVE AI: UNIFICATION OF EMAIL GENERATION THROUGH GPT-2 MODEL WITH A GAME-THEORETIC APPROACH FOR SPEAR-PHISHING ATTACKS." In Competitive Advantage in the Digital Economy (CADE 2021). Institution of Engineering and Technology, 2021. http://dx.doi.org/10.1049/icp.2021.2422.
Full textZenic, Natasa, Admir Terzic, and Ivan Kvesic. "Determinants of changes in physical activity levels in late adolescence; prospective analysis in urban communities." In 12th International Conference on Kinanthropology. Brno: Masaryk University Press, 2020. http://dx.doi.org/10.5817/cz.muni.p210-9631-2020-39.
Full textReports on the topic "Sperrm competition"
Elizur, Abigail, Amir Sagi, Gideon Hulata, Clive Jones, and Wayne Knibb. Improving Crustacean Aquaculture Production Efficiencies through Development of Monosex Populations Using Endocrine and Molecular Manipulations. United States Department of Agriculture, June 2010. http://dx.doi.org/10.32747/2010.7613890.bard.
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