INVESTIGADORES
DOPAZO Hernan Javier
congresos y reuniones científicas
Título:
The influence of sexual selection upon sperm design in mammals: integrating phenotypic and genomic approaches
Autor/es:
M. GOMENDIO, M. TOURMENTE, L. LUEKE, L. GOMEZ-MONTOTO, A. VICENS, F SERRA, H DOPAZO, & E ROLDAN
Lugar:
Bath, UK
Reunión:
Workshop; New directions in sexual selection research: Unifying behavioural & genomic approaches; 2010
Institución organizadora:
Genetics Department. University of Bath
Resumen:
THE INFLUENCE OF SEXUAL SELECTION UPON SPERM DESIGN IN MAMMALS: INTEGRATING PHENOTYPIC AND GENOMIC APPROACHES M Gomendio1, M Tourmente1, L Lueke1, L Gomez-Montoto1, A. Vicens1, F Serra2, H Dopazo2, ERS Roldan1 1Reproductive Ecology and Biology Group, Museo Nacional de Ciencias Naturales (CSIC), Jose Gutierrez Abascal 2, 28006-Madrid, Spain. 2Evolutionary Genomics Unit, Bioinformatics & Genomics Department, Centro de Investigación Príncipe Felipe, 46012-Valencia, Spain. Sexual selection is expected to influence sperm design by making sperm longer and more hydrodynamic in order to achieve faster swimming speeds, the main determinant of fertilisation success in competitive contexts. However, the evidence for mammals is contentious. We compare patterns of sperm evolution among different mammalian taxa and show that, while some lineages respond to increased levels of sperm competition by increasing sperm size and modifying sperm head shape, others do not. Among the latter taxa, sperm size is unrelated to sperm competition levels, but is associated with body size. In addition, we compare the rate of evolution of reproductive genes for mammalian taxa, and also find differences in evolutionary patterns between lineages. We suggest that differences between mammalian taxa in life-history (largely body size- dependent), mating system and population dynamics may explain both phenotypic and molecular evolutionary patterns. Funded by the Ministry of Science and Innovation, Spain.