José Julián Garde

TL;DR: It is concluded that male fertility varies substantially in natural populations of Iberian red deer and that, when sperm numbers are equal, it is determined mainly by sperm swimming velocity and sperm morphology.

TL;DR: The results show that there is little within-male and considerable between-male variation in sperm dimensions, and the hydrodynamic shape of the head and the forces generated by the relative size of the rest of the flagellum seem to be the key determinants of sperm swimming velocity.

TL;DR: This review considers the use of statistical techniques for clustering CASA data, their challenges and possibilities, and there are many clustering approaches potentially useful for grouping sperm motility data; some options may be more appropriate than others.

TL;DR: Sperm quality at thawing for all sperm parameters evaluated was significantly higher for "good" freezers than for the "bad" ones, and it is possible that sperm head area and shape influence total sperm volume, thus causing differences in heat exchange as well as in movements of water, ions, and cryoprotectants and, in turn, on sperm freezability.

TL;DR: The combination of trehalose plus EDTA confers the highest cryopreserving activity tested, not only for freeze-thawing but also for post-thawed resistance, possibly by removing calcium from the medium thereby preventing cation competition with trehalOSE for membrane-binding sites.