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IVF success rates: sperm competition may be key

Catherine McDiarmid-Watt | Tuesday, September 16, 2008 | 0 comments

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There have been numerous studies on both human and animal sexual behavior to help understand the fertilization process, and how to stimulate the production of large amounts of healthier sperm. One of the most common areas of study is sperm competition.

According to author G.A. Parker, if more than one male's sperm occupies the same female, sperm competition will occur. Based on certain circumstances and situations, males in various species have been known to tailor their ejaculations so that they can compete with other males.

Think of it as a lottery. The more tickets you buy, the greater your chance of winning.

First off, take into consideration the meadow vole (Microtus pennsylvanicus), which is a small rodent that can be found in North America. According to Drs. Janier delBarco, and Trillo & Michael H. Ferkinthis, the meadow vole or field mouse is significant because if it detects other males in the area where it is having intercourse, it will produce much more sperm than if other males were not present.

Full story: http://media.www.wilkesbeacon.com/media/storage/paper533/news/2008/09/14/Opinion/Ivf-Success.Rates.Sperm.Competition.May.Be.Key-3426074.shtml

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About Catherine: I am mom to three grown sons, two grandchildren and two rescue dogs. After years of raising my boys as a single mom, I remarried a wonderful man who had never had a child of his own. Unexpectedly, I found myself pregnant at 49!
Sadly we lost that precious baby at 8 weeks, and decided to try again. Five more losses, turned down for donor egg, foster care and adoption due to my age and losses - we have accepted that there will be no more babies in our house.

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