Plastic Responses Of Male Drosophila Melanogaster To The Level Of Sperm Competition Increase Male Reproductive Fitness

March 2, 2009 at 11:00 am Leave a comment

Males of many species respond to the presence of rivals, but direct tests of the consequences of responding are lacking.

We found that exposure to rival males prior to mating increased a male’s investment in his ejaculate (measured as mating duration). In contrast, exposure to rivals in the mating arena decreased mating duration. We then tested whether males that responded to the level of sperm competition had higher reproductive fitness.

We found that males exposed to rivals before mating achieved significantly higher paternity share regardless of whether they were the first or second males to mate with a female.

Proceedings of the Royal Society B: Biological Sciences

Proceedings B is the Royal Society’s flagship biological research journal, dedicated to the rapid publication and broad dissemination of high-quality research papers, reviews and comment and reply papers. The scope of the journal is diverse and is especially strong in organismal biology.

Proceedings of the Royal Society B: Biological Sciences



Entry filed under: Uncategorized.

Brain Tumor Research Center A Lasting Legacy At Barrow Lupus Foundation Of America Advocates Say 50 Years Without A New Treatment Is Too Long To Wait

Leave a Reply

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

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

Google+ photo

You are commenting using your Google+ 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 )


Connecting to %s

Trackback this post  |  Subscribe to the comments via RSS Feed


Blog Stats

  • 15,733 hits

%d bloggers like this: