an odd growth on a candy stripe shrimp

Fish & Invertebrate sightings and descriptions, hosted by resident NWDC ID expert Janna Nichols (nwscubamom).
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dphershman
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an odd growth on a candy stripe shrimp

Post by dphershman »

I found this shrimp at Sechelt Inlet this past weekend. When I first saw it I thought that something was attached to its side, with the photo you can see that whatever it is, it appears to be just underneath the outer shell.

Anyone have a guess as to what this lump is?

Image

Dan
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nwscubamom
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Re: an odd growth on a candy stripe shrimp

Post by nwscubamom »

I think those are eggs. Greg will know for sure though!
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Re: an odd growth on a candy stripe shrimp

Post by Tidepool Geek »

Hi Dan,

I'm guessing it's a parasitic isopod; it seems to be the right shape and that's where they often show up on a shrimp.
OTOH: Greg is the expert.

Speculatively yours,
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Re: an odd growth on a candy stripe shrimp

Post by Grateful Diver »

I found one similar to that at Northwest Island about a half-dozen years ago. I recall that the growth was identified as some sort of parasite ...

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dphershman
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Re: an odd growth on a candy stripe shrimp

Post by dphershman »

a parasite was my guess, I would have expected eggs to be slung under the body rather than from the side.

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Re: an odd growth on a candy stripe shrimp

Post by Grateful Diver »

... and you would be right ... here's a CS shrimp with eggs ...

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Echo
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Re: an odd growth on a candy stripe shrimp

Post by Echo »

I found one at Skyline last year with a parasite also!
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Echo
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Re: an odd growth on a candy stripe shrimp

Post by Echo »

FB_IMG_1459309835270.jpg
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dphershman
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Re: an odd growth on a candy stripe shrimp

Post by dphershman »

Echo wrote:
FB_IMG_1459309835270.jpg
interesting to see that the 'parasite' (if that's what it is) is located in exactly the same place in all three images posted here.

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YellowEye
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Re: an odd growth on a candy stripe shrimp

Post by YellowEye »

Cool find! Andy Lamb's book has an entry on this.
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dphershman
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Re: an odd growth on a candy stripe shrimp

Post by dphershman »

YellowEye wrote:Cool find! Andy Lamb's book has an entry on this.
Which book? citation?
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Greg Jensen
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Re: an odd growth on a candy stripe shrimp

Post by Greg Jensen »

It's a bopyrid isopod- see the entry on it on pg. 13 of my newer book
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