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Diptera.info :: General Diptera forums :: Methodology
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Flies in the freezer.
skrylten
#1 Print Post
Posted on 20-07-2012 19:44
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Location: Sweden
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For how long is it possible to keep the specimens in the freezer, and still have them as "new" when it is time to pin them ?

Can I keep some fun for the long wintermonths up in the north Grin
 
Tony Irwin
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Posted on 20-07-2012 21:16
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Location: Norwich, England
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Frozen material does tend to dry out over time - it helps to place the specimens in a small tube, to maintain the moisture levels, and they do need to be treated quickly after thawing. If the specimens are small and partially dried, it may be better to card point them, rather than pin them.
Tony
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Tony Irwin
 
mossnisse
#3 Print Post
Posted on 21-07-2012 00:30
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I have pinned flies that have been in the freezer 1.5 year with no problem. They are in quite moist tubes.
 
http://www.norrlandsnatur.se/litt_base/
pjoris
#4 Print Post
Posted on 21-07-2012 07:52
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I tried once to use the freezer as killing method (as seems quite common among lepidopterists), but many flies lost their third antennal segment. It seems it was frozen of ! Maybe that depends on the exact temperature in your freezer, but I have heard of others having this problem. Joris
 
mossnisse
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Posted on 21-07-2012 10:38
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Ah is it there the antenna break off. I haven’t been able to figure it out before.
 
http://www.norrlandsnatur.se/litt_base/
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07.03.24 00:01
Some flies preserved in ethanol and then pinned often get the eyes sunken, how can this be avoided? Best answer: I usually keep alcohol-collected material in alcohol

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Aneomochtherus

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Tony, I HAD a blank in the file name. Sorry!

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pjt - just send the post and attached image. Do not preview thread, as this will lose the link to the image,

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