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Old 10-15-2019, 01:12 AM
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Default Nemertean....yay

Im new to vivariums about 6 mos, and ofcourse with any hobby comes pests.... but these are ugly how do we help lower the population?
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Old 10-15-2019, 01:26 AM
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Default Re: Nemertean....yay

Quote:
Originally Posted by GTYLER04 View Post
how do we help lower the population?
Manual removal. For each one you remove, you lower the population by one.

There are lots of discussions of these guys in the archives, where you may find some ideas to try, but I've not read of any course of action that is more effective than the one I suggested.
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Old 10-15-2019, 01:54 AM
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Default Re: Nemertean....yay

Squish with kleenex

they boom and bust

you will get thru this!

No danger to frogs
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Old 10-15-2019, 02:01 AM
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Default Re: Nemertean....yay

Greetings,

Sigh... these are not nemerteans - they are a terrestrial flatworm - a Rhynchodemus sp. I sigh because these guys are persistently mis-identified critter on the board.

At this point trying to correct the issue is perhaps futile and maybe even counter-productive since so much of the feedback around these guys exists in threads who topics include the name "nemertean"... but I persist nonetheless

As SM says, remove them manually. They are arthropod and mollusk predators so they won't hurt frogs and have the minor side-benefit of eating small slugs and snails. They are a pest because they compete for frog food (flies and springtails - but some frogs will eat them as mine will on occasion).

Although I once had them in my big viv (and tried everything from repeated C02 bombs to repeatedly soaking the viv with an anti-helminthic to get rid of them without success) they seem to have finally disappeared on their own. I haven't seen one in months even after an extensive viv remodel and careful examination of the substrate during that process (as well as nightly scans of the tank when the lights go out). I also no longer see the carcasses of flies caught by the worms.

I wish I knew what lead to their eradication! Perhaps it was egg predation from isopods, amphipods or millipedes - or perhaps a pathogen took them out. Maybe the infrequent predation from my frogs was enough? Given the large size of my viv and all the places where the flatworms would find refuge from frogs, I tend to think it must be a pathogen or competition/egg-predation by arthropods. Either way, I'm happy to see them gone!
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Old 10-15-2019, 02:29 PM
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Default Re: Nemertean....yay

Quote:
Originally Posted by Socratic Monologue View Post
For each one you remove, you lower the population by one.
This is FACT. :-)
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Old 10-16-2019, 11:26 PM
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Default Re: Nemertean....yay

I put powder blue isopods in a tank with flatworms and they totally wiped out the worms in a few weeks.
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Old 10-16-2019, 11:55 PM
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Default Re: Nemertean....yay

Iíve had this in a lot of vivs now. Although they wonít hard the frogs they are an absolute pain when it comes to keeping springtails. Iíve had them completely disappear from certain ones but no idea how or why. The only thing I can put it down to is thriving isopod populations. They also really donít like it being dried out and seem to take a massive hit. Co2 takes ages to kill them Iíve had them live days in a bag with pure co2!


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