dudeone Posted February 13, 2013 Share Posted February 13, 2013 Hermaphrodite Sea Slug Mates With Throwaway Penis By Tia Ghose, LiveScience Staff Writer | LiveScience.com – 2 hrs 7 mins ago http://news.yahoo.com/hermaphrodite-sea-slug-mates-throwaway-penis-001103527.html A bizarre, hermaphrodite sea slug may give new meaning to the word "quickie." The nudibranch uses a disposable penis to have sex more frequently, according to a new study. The animal, described today (Feb. 12) in the journal Biology Letters, is the first discovered to use an easily regenerated, disposable penis. Nudibranches are simultaneous hermaphrodites, meaning that they have penises that they use to fertilize others as well as female sex organs. But exactly how their sex worked remained a mystery. To find out, Ayami Sekizawa, a biologist at Osaka City University, and his colleagues collected specimens of the nudibranch Chromodoris reticulata while scuba diving off Okinawa, Japan. They then put 31 pairs of the creatures together in an aquarium and watched as they mated. [The Animal Sex Quiz] When the sea creatures copulated, they unfurled part of a long penis coiled up like a fire hose inside their bodies. The creatures then simultaneously penetrated one another with their penises (which are covered in backward-pointed spines), and after tens of seconds to a few minutes of sea slug sex, separated. The slugs then discarded the penises (or at least the extended portion of them), similar to how geckos shed their tails. After about a day, the nudibranches were ready to mate again, at which point they projected the penis section that was previously hidden internally. One frisky slug actually had sex three times in three days. After the slugs finished with sex, and their cast-off penises, the spiral portion of the penis forms more cells that will eventually grow into the next penis, the researchers hypothesize. Because the sea creatures often live in dense groups where sexual competition is fierce, the findings suggest that the use of the coiled, compressed penis can give nudibranches a leg up by allowing them to have sex more frequently, the researchers write in the paper. Having a disposable penis may also enable nudibranches to scrape out rivals' sperm while sidestepping the difficult removal of a penis covered in backward-pointed spines from their partners. "Chromodoris reticulata may compensate for the short-term cost of decreased reproductive opportunities caused by the loss of a penis with the reproductive advantage gained by sperm displacement under severe sperm competition," the authors write. Link to comment Share on other sites More sharing options...
KFBR392 Posted February 13, 2013 Share Posted February 13, 2013 Do you expect this to spark an insightful conversation? Who needs to keep up with the most retarded world news stories when CDC has dudeone at the helm. Link to comment Share on other sites More sharing options...
hudson bay rules Posted February 13, 2013 Share Posted February 13, 2013 Kicking us in the nads is still not kosher ladies. Link to comment Share on other sites More sharing options...
Mr. Ambien Posted February 13, 2013 Share Posted February 13, 2013 Can dudeone have his own topic for articles that aren't even newsworthy? Link to comment Share on other sites More sharing options...
That's What She Said Posted February 13, 2013 Share Posted February 13, 2013 That's a neat anecdote, sport! Link to comment Share on other sites More sharing options...
aeromotacanucks Posted February 13, 2013 Share Posted February 13, 2013 Nature, Nature, Nature. always surprising us and ALWAYS giving reasons for Humans´ dirty minds to laught about something really "natural"... Link to comment Share on other sites More sharing options...
Aladeen Posted February 13, 2013 Share Posted February 13, 2013 Nature, Nature, Nature. always surprising us and ALWAYS giving reasons for Humans´ dirty minds to laught about something really "natural"... Link to comment Share on other sites More sharing options...
canucks since 77 Posted February 13, 2013 Share Posted February 13, 2013 Is this a thread on lady GAGA? Link to comment Share on other sites More sharing options...
key2thecup Posted February 13, 2013 Share Posted February 13, 2013 That's a neat anecdote, sport! Link to comment Share on other sites More sharing options...
Beer-League-Goalie Posted February 13, 2013 Share Posted February 13, 2013 Link to comment Share on other sites More sharing options...
CanuckRow Posted February 13, 2013 Share Posted February 13, 2013 Weirdest thread title i've ever seen. Link to comment Share on other sites More sharing options...
pwnstar Posted February 13, 2013 Share Posted February 13, 2013 Random thread of the year? Link to comment Share on other sites More sharing options...
avelanch Posted February 14, 2013 Share Posted February 14, 2013 Link to comment Share on other sites More sharing options...
Jai604 Posted February 14, 2013 Share Posted February 14, 2013 What is this, I don't even Link to comment Share on other sites More sharing options...
:D Posted February 14, 2013 Share Posted February 14, 2013 I'm fine with my penis hanging around, but if I could dump these balls whenever I wasn't using them, that would be super Link to comment Share on other sites More sharing options...
Armada Posted February 14, 2013 Share Posted February 14, 2013 Damn Nature! Link to comment Share on other sites More sharing options...
D-Money Posted February 14, 2013 Share Posted February 14, 2013 Dating myself, but anyone remember...? Link to comment Share on other sites More sharing options...
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