Sexual Selection and the Evolution of Sperm Competitiveness The Cost and the Av...
Sexual Selection and the Evolution of Sperm Competitiveness The Cost and the Avoidance of Oxidative Stress in Sperm Cells
Sexual selection drives the rapid evolution of reproductive traits and genes. Specifically, high levels of sperm competition (the process in which female promiscuity forces the ejaculates from rival males to compete to fertilize t...
ver más
¿Tienes un proyecto y buscas un partner? Gracias a nuestro motor inteligente podemos recomendarte los mejores socios y ponerte en contacto con ellos. Te lo explicamos en este video
Proyectos interesantes
CGL2011-26341
SELECCION SEXUAL Y LA EVOLUCION DE COMPETITIVIDAD ESPERMATIC...
157K€
Cerrado
CGL2008-04090
SELECCION SEXUAL Y ESPECIACION: INFLUENCIA DE LA COMPETICION...
276K€
Cerrado
BES-2013-066115
SELECCION SEXUAL Y LA EVOLUCION DE COMPETITIVIDAD ESPERMATIC...
84K€
Cerrado
PatSuccess
Physiological and genetic drivers of male paternity success
222K€
Cerrado
CGL2012-37423
EFECTO DE LA COMPETICION ESPERMATICA SOBRE LOS MECANISMOS QU...
129K€
Cerrado
EVOSPERM
Sexual selection and the evolutionary biology of spermatogen...
181K€
Cerrado
Fecha límite de participación
Sin fecha límite de participación.
Descripción del proyecto
Sexual selection drives the rapid evolution of reproductive traits and genes. Specifically, high levels of sperm competition (the process in which female promiscuity forces the ejaculates from rival males to compete to fertilize the same ova) results in an improvement in sperm competitiveness. One of the main determinants of sperm competitiveness is swimming velocity, which enables sperm to outcompete rival sperm in the race to fertilize the ova. The increase in sperm metabolism associated with enhanced swimming speed is expected to increase levels of oxidative stress. Oxidative stress is known to affect sperm membranes as well as DNA integrity, leading to decreased sperm function and the transmission of genetic disease to offspring. We will investigate, in a group of closely related species of rodents that differ dramatically in their levels of sperm competition, if sperm competition results in higher levels of oxidative stress, and if such oxidative stress is prevented by the evolution of protective counter-measures such as changes in the composition of the plasma membrane, increased antioxidant defenses, or a greater degree of condensation of the DNA within the sperm head.