[Syrphidae] freeze desinfection of insect drawers

Frank Dziock frank.dziock at tu-berlin.de
Wed Oct 18 08:02:08 BST 2006


Dear Chris, dear Christian,

thanks very much for your helpful and encouraging comments and hints.

I will try out the freeze desinfection and report on my experience in
this forum in a few weeks.

All the best from cold and sunny Berlin (4 degrees C),

Frank Dziock




Christian Kehlmaier schrieb:
> Uuups ... I thought I was writing to Frank directly.
> 
> Put the drawers into plastic bags and leave them in the freezer for 4-5 days. In case the drawers are infested, leave them at room temperature for a week after taking them out and freeze them a second time. That way, any eggs, that can well withstand such low temperatures, can hatch and the beasties will then get frozen in the second round.
> 
> Christian.
> 
> 
> 
> 
> 
> 
> 
>> -----Ursprüngliche Nachricht-----
>> Von: Hoverfly discussion list <syrphidae at lists.nottingham.ac.uk>
>> Gesendet: 17.10.06 15:30:50
>> An: Hoverfly discussion list <syrphidae at lists.nottingham.ac.uk>
>> Betreff: Re: [Syrphidae] freeze desinfection of insect drawers
> 
> 
>> Hallo Frank
>>
>> Am besten du verpackst die Kaesten einzeln in Plastiktueten (gegen das Kondenswasser) und legst sie dann für 4-5 Tage in den Gefrierschrank. Danach ca. eine Woche bei Zimmertemperatur, damit evtl. Eier noch schluepfen koennen, und erneut fuer 4-5 Tage in die Gefriertruhe. Die Tiere duerften dabei keinen Schaden nehmen.
>>
>> Gruesse, Christian.
>>
>>
>>> -----Ursprüngliche Nachricht-----
>>> Von: Hoverfly discussion list <syrphidae at lists.nottingham.ac.uk>
>>> Gesendet: 17.10.06 14:05:43
>>> An: syrphidae at lists.nottingham.ac.uk
>>> Betreff: [Syrphidae] freeze desinfection of insect drawers
>>
>>> Hello Syrphid friends!
>>>
>>> Can anybody provide me with information how to desinfect the drawers in
>>> my syrphid collection with a standard freezer (-18 degrees C)? There are
>>> no visible signs of pests yet, but I would like to be as safe as possible.
>>>
>>> I am also unsure about the details:
>>>
>>> How long do the drawers have to be in the freezer?
>>> Does freezing damage the syrphid specimens?
>>> How about condensed water after taking the insect drawers out of the
>>> freezer?
>>>
>>> Maybe there are already some web resources on this? I would greatly
>>> appreciate any links or hints on literature on this topic.
>>>
>>> Many thanks in advance!
>>>
>>> Best wishes from Berlin,
>>>
>>> Frank Dziock
>>>
>>>
>>> -- 
>>>
>>> Prof. Dr. Frank Dziock
>>> Fachgebiet Biodiversitätsdynamik
>>> der TU Berlin
>>> Sekr. AB 1
>>> Rothenburgstr. 12
>>> D - 12165 Berlin
>>> Germany
>>>
>>> Tel: 030 � 314 71368
>>> Fax: 030 � 314 71355
>>>
>>> http://www.tu-berlin.de/fb7/ioeb/biodiversitaet/
>>>
>>> "God in his wisdom made the fly, and then forgot to tell us why." Ogden Nash
>>>
>>> special issue on �Bioindication and Functional Response in Floodplain Systems� out now!
>>> published in International Review of Hydrobiology 
>>> http://www3.interscience.wiley.com/cgi-bin/jhome/60500251
>>>
>>>
>>> _______________________________________________
>>> Syrphidae mailing list
>>> Syrphidae at lists.nottingham.ac.uk
>>> http://lists.nottingham.ac.uk/mailman/listinfo/syrphidae
>> -- 
>>
>> Christian Kehlmaier, M.A.
>>
>> work:
>> State Natural History Collections Dresden
>> Museum of Zoology
>> Koenigsbruecker Landstrasse 159
>> D-01109 Dresden
>> Germany
>> phone: 0049-(0)351-89 26 301
>>
>> privat:
>> Boehmische Strasse 39
>> D-01099 Dresden
>> Germany
>> 0049-(0)1577-39 39 348
>>
>> http://www.kehlmaier.de
>>
>> _____________________________________________________________________
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> 
> -- 
> 
> Christian Kehlmaier, M.A.
> 
> work:
> State Natural History Collections Dresden
> Museum of Zoology
> Koenigsbruecker Landstrasse 159
> D-01109 Dresden
> Germany
> phone: 0049-(0)351-89 26 301
> 
> privat:
> Boehmische Strasse 39
> D-01099 Dresden
> Germany
> 0049-(0)1577-39 39 348
> 
> http://www.kehlmaier.de
> 
> _____________________________________________________________________
> Der WEB.DE SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen!
> http://smartsurfer.web.de/?mc=100071&distributionid=000000000066
> 
> _______________________________________________
> Syrphidae mailing list
> Syrphidae at lists.nottingham.ac.uk
> http://lists.nottingham.ac.uk/mailman/listinfo/syrphidae
> 
> 


-- 

Prof. Dr. Frank Dziock
Fachgebiet Biodiversitätsdynamik
der TU Berlin
Sekr. AB 1
Rothenburgstr. 12
D - 12165 Berlin
Germany

Tel: 030 – 314 71368
Fax: 030 – 314 71355

http://www.tu-berlin.de/fb7/ioeb/biodiversitaet/

"God in his wisdom made the fly, and then forgot to tell us why." Ogden Nash

special issue on “Bioindication and Functional Response in Floodplain
Systems” out now!
published in International Review of Hydrobiology
http://www3.interscience.wiley.com/cgi-bin/jhome/60500251



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