Posted by: Sandy Steinman | May 27, 2012

Are There Benefits To Sparrows Not Being Monogamous?

Song Sparrows have social pairs but the females often mate with other males as well.  One hypothesis  was that by mating with males outside the bonded social pair it  would increase the chances of the female’s genes being carried to future generations by mating with a male of higher genetic quality.

 New research reported in Science Daily that the opposite is trueResearchers doing a 20 year study of song sparrows found the opposite to be true. Researchers found that offspring from fathered by males outside the bonded social pair had 40 percent less offspring of their own and 30 percent less grandoffspring than offspring within the  bonded pair.

Read more at Science Daily For monogamous sparrows, it doesn’t pay to stray but they do it anyway.

About these ads

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Categories

Follow

Get every new post delivered to your Inbox.

Join 472 other followers

%d bloggers like this: