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TOPIC: My Battle with Scuds

My Battle with Scuds 5 years 4 months ago #89

  • xenxes
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Been having a scud outbreak in several of the tanks, mainly the 20L. IMPOSSIBLE to rid of them without nuking everything with patriot missiles. So far I think this species is more of a detritivore / scavenger. I think I have gammarus pulex.





Gammarus pulex, not sure.


Trapped ~100, filled and dumped 5 of these tubs.
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My Battle with Scuds 5 years 4 months ago #90

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Some species are known to be more aggressive and carnivorous, they can catch bloodworms, that means they can catch shrimplets


Other species are known to eat plants and mosses? I think this is just a rumor from other forums, have not found any real indication.

The carnivorous part is backed up though:
There is mutual predatory behavior between Gammarus pulex and Gammarus duebeni celticus on the newly molted (onlinelibrary.wiley.com/doi/1...815.x/abstract).
It only makes sense that they would predate on newly born shrimp.

Images of a few other species:

Gmelinoides fasciatus


Gammarus lacustris


?

Last Edit: 5 years 4 months ago by xenxes.
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My Battle with Scuds 5 years 4 months ago #91

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(1) if we look at the anatomy, certain gammarus species is capable of shredding into prey with its large gnathopods/claw


(2) whereas the pulex only has prehensile legs


I'm not certain which species I have... it looks like they have claw-like gnathopods.



They look curved inwards? I'll try to get a better picture of them eating.
Last Edit: 5 years 4 months ago by xenxes.
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My Battle with Scuds 5 years 4 months ago #92

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COMPOUND eyes!


SCYTHE-like hooked claws!


More eggs!!


This one tried to attack me through the glass with a high pitched shriek!
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My Battle with Scuds 5 years 4 months ago #93

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That sounds terrible! I have a problem with pond snails and I can't imagine scuds in my tank.
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My Battle with Scuds 5 years 4 months ago #94

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I have pond snails, they're awesome for a shrimp tank, eat the food shrimp won't touch or left in for too long, eat dead plant matter. Scuds on the other hand... can possibly hunt shrimp, though I still can't confirm.

I'm going to catch a few and put them with shrimplets in a breeder net, see what happens...
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