Big Worm video (Dero sp.) and a question

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billporter1456
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Big Worm video (Dero sp.) and a question

Post by billporter1456 »

I had no idea what this was until carlos.uruguay identified it for me. Can someone explain the apparent tail to head direction of what looks to me like peristalsis of the digestive tract? It just looks like it's moving in the wrong direction and no, I didn't reverse the direction of the video playback.

https://www.youtube.com/watch?v=SPa99qopFB4

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Tom Jones
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Post by Tom Jones »

I do believe that is the most dramatic soundtrack ever 8) 8) , for an Annelid worm!

Tom

carlos.uruguay
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Post by carlos.uruguay »

Perhaps related to the breathing bringing the oxygen coming from the gills
(It seems to be dying)

Jacek
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Post by Jacek »

Super

Olympusman
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Worm

Post by Olympusman »

Dero limosa.
The peristalsis looks like what I commonly see in all aquatic worms. I think they "swallow" and then reform the muscles for the next gulp, so it may appear to be moving in reverse.
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

billporter1456
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Post by billporter1456 »

carlos.uruguay wrote:Perhaps related to the breathing bringing the oxygen coming from the gills
(It seems to be dying)
Yes, after watching it several times, I think it may be the blood being "pumped" that makes it appear that the gut is displaying reverse peristalsis.

billporter1456
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Re: Worm

Post by billporter1456 »

Olympusman wrote:Dero limosa.
The peristalsis looks like what I commonly see in all aquatic worms. I think they "swallow" and then reform the muscles for the next gulp, so it may appear to be moving in reverse.
Thanks, Olympusman, that helps to explain what I was seeing.

billporter1456
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Post by billporter1456 »

Jacek wrote:Super
Thanks, Jacek! I'm glad you liked it.

carlos.uruguay
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Post by carlos.uruguay »

Thanks Michael for the information

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