<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Nascimento, Jaclyn M</style></author><author><style face="normal" font="default" size="100%">Shi, Linda Z</style></author><author><style face="normal" font="default" size="100%">Meyers, Stuart</style></author><author><style face="normal" font="default" size="100%">Gagneux, Pascal</style></author><author><style face="normal" font="default" size="100%">Loskutoff, Naida M</style></author><author><style face="normal" font="default" size="100%">Botvinick, Elliot L</style></author><author><style face="normal" font="default" size="100%">Berns, Michael W</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The use of optical tweezers to study sperm competition and motility in primates.</style></title><secondary-title><style face="normal" font="default" size="100%">J R Soc Interface</style></secondary-title><alt-title><style face="normal" font="default" size="100%">J R Soc Interface</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Algorithms</style></keyword><keyword><style  face="normal" font="default" size="100%">Animals</style></keyword><keyword><style  face="normal" font="default" size="100%">Cell Movement</style></keyword><keyword><style  face="normal" font="default" size="100%">Male</style></keyword><keyword><style  face="normal" font="default" size="100%">Optical Tweezers</style></keyword><keyword><style  face="normal" font="default" size="100%">Primates</style></keyword><keyword><style  face="normal" font="default" size="100%">Regression Analysis</style></keyword><keyword><style  face="normal" font="default" size="100%">Sexual Behavior, Animal</style></keyword><keyword><style  face="normal" font="default" size="100%">Spermatozoa</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2008 Mar 6</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">5</style></volume><pages><style face="normal" font="default" size="100%">297-302</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Optical trapping is a non-invasive biophysical tool which has been widely applied to study physiological and biomechanical properties of cells. Using laser &#039;tweezers&#039; in combination with custom-designed computer tracking algorithms, the swimming speeds and the relative swimming forces of individual sperm can be measured in real time. This combination of physical and engineering tools has been used to examine the evolutionary effect of sperm competition in primates. The results demonstrate a correlation between mating type and sperm motility: sperm from polygamous (multi-partner) primate species swim faster and with greater force than sperm from polygynous (single partner) primate species. In addition, sperm swimming force linearly increases with swimming speed for each species, yet the regression relating the two parameters is species specific. These results demonstrate the feasibility of using these tools to study rapidly moving (microm s(-1)) biological cells.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">20</style></issue><custom1><style face="normal" font="default" size="100%">&lt;p&gt;http://www.ncbi.nlm.nih.gov/pubmed/17650470?dopt=Abstract&lt;/p&gt;
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