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My scientific specialty is chronobiology (circadian rhythms and photoperiodism), with additional interests in comparative physiology, animal behavior and evolution. I am not an MD so I cannot diagnose and treat your sleep problems. As well as writing this blog, I am also the Online Discussion Expert for PLoS. This is a personal blog and opinions within it in no way reflect the policies of PLoS. You can contact me at: Coturnix@gmail.com


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« The Evolution of Peeps | Main | Science Cafe Raleigh: The Personal Genome Project »

Mating slugs

Category: A Picture Is Worth A Thousand WordsAnimal BehaviorFriday Weird Sex BloggingSex
Posted on: May 6, 2009 10:42 AM, by Coturnix

I know PZ has recently posted a picture and a video of slugs mating. But these pictures were taken here in North Carolina, by blog reader Kris Barstow, who says:

The year was 1999 plus or minus a year, the site was a few miles from Asheboro, NC. I don't recall the season, but it was warm, and there is definitely a chill there in the cold seasons, so I assume spring or summer. It was about half an hour after sunrise; I was walking my dog. I would occasionally carry my camera "just because ..."

I saw these two acting strangely on the surface of the wooden shed. They actually attached themselves, then went into freefall. They twined around each other, and then a moist pouch was extruded below them. White froth was present but in moderation.

I don't recall what exactly happened after that. They remained suspended for some time, and the likeliest thing is that I left them to their passion.

SlugLove1.jpgSlogLove2.jpgSlugLove3.jpgSlugLove4.jpg

So, can someone identify the species?

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Comments

1

How big are they? Limax maximus mates dangling from a mucous thread like that. Adults are about thumb sized.

Posted by: MattK | May 6, 2009 8:23 PM

2

I would have pegged them as Limax maximus because of that acrobatic behaviour. Haven't seen them that colour before so they may be something else. The ones I see in my garden here in southern Australia are usually more grey and black.

Posted by: Snail | May 6, 2009 11:43 PM

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