Re: NANFA-- FW: Aquaticinfo: Regarding Praziquantel

Steffen Hellner (steffen_at_hellner.biz)
Wed, 28 Jan 2004 21:24:56 +0100

Very interesting, thank you.

Steffen

> Von: "Nick Zarlinga" <njz_at_clevelandmetroparks.com>
> Antworten an: nanfa_at_aquaria.net
> Datum: Wed, 28 Jan 2004 12:50:45 -0500
> An: "NANFA List Server (E-mail)" <nanfa_at_aquaria.net>
> Betreff: NANFA-- FW: Aquaticinfo: Regarding Praziquantel
>
> From another list. Thought it was appropriate.
>
> Nick Zarlinga
> Aquarium Biologist
> Cleveland Metroparks Zoo
> 216.661.6500 ext 4485
>
>
>> <)> -----Original Message-----
>> <)> From: aquaticinfo_at_neaq.org
>> <)> On Behalf Of
>> <)> dsweet
>> <)> Sent: Tuesday, January 27, 2004 5:29 PM
>> <)> To: aquaticinfo_at_neaq.org
>> <)> Subject: Aquaticinfo: Regarding Praziquantel
>> <)>
>> <)>
>> <)> David,
>> <)> Regarding praziquantel. Praziquantel is effective
>> <)> against internal cestodes and trematodes when
>> <)> simply added to the water of an aquarium
>> <)> containing infected fish. At least from my
>> <)> experiences. Praziquantel added at 3.5 ppm to the
>> <)> water will clear red shiners of an ungodly amount
>> <)> of intestinal cestodes. If you treat red shiners
>> <)> you will never believe
>> <)> the size and quantity of tapeworms that can come
>> <)> out of an individual fish! The volume of
>> <)> tapeworms looks like it should exceed the volume of
>> <)> the fish!
>> <)> I have also diagnosed discus with internal
>> <)> cestodes by the presence of eggs and cestode
>> <)> segments in fecals as well as necropsy exams. A discus
>> <)> breeder had problems with his broodstock and
>> <)> wanted me to take a look at
>> <)> them. Praziquantel added to the water licked this
>> <)> problem as well.
>> <)> I can go on with more examples ranging from
>> <)> sticklebacks to sunfish. I will admit most of my
>> <)> experience with praziquantel is with freshwater
>> <)> fish. Perhaps its not as effective internally
>> <)> with marine fish? I find this hard to believe
>> <)> since marine fish would be drinking water all the
>> <)> time, hence actively ingesting the dissolved drug.
>> <)> Whereas freshwater fish are probably uptaking it
>> <)> through their gills or integument. Perhaps
>> <)> salt-water internal parasites have different
>> <)> percentages of calcium channels to be effected by the drug?
>> <)> A paper quite a few years ago in Progressive Fish
>> <)> Culturist (now North American Journal of
>> <)> Aquaculutre) also reported that encysted
>> <)> trematodes (it was either black grub or white grub
>> <)> disease) could be removed from striped bass or
>> <)> striped bass hybrid broodstock by adding only .25
>> <)> ppm praziquantel to the water!
>> <)> Im sure other colleagues will agree that in many,
>> <)> if not most cases, praziquantel simply added to
>> <)> the water will work wonders at removing internal
>> <)> encysted as well as intestinal flukes and
>> <)> tapeworms. I certainly would not make the
>> <)> statement it works on all species of fluke and
>> <)> tapeworms all the time. Given my choices, I
>> <)> prefer to add a chemical to the water rather than
>> <)> compound it into a diet anyday. It saves a lot
>> <)> of time and trouble. Especially if it works just
>> <)> as effectively as an injected or oral route.
>> <)> Doug Sweet
>> <)> Curator of Fishes
>> <)> Belle Isle Aquarium
>> <)> Detroit Zoological Institute
>> <)>
>> <)>
>> <)>
>> <)> You are receiving this message because you are a
>> <)> subscriber to the mailing list aquaticinfo_at_neaq.org.
>> <)>
>> <)> To unsubscribe or make other administrative
>> <)> changes email bnelson_at_neaq.org.
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