Let's see now: I take the boxes of papered stuff out of the freezer, take the fumigant out of drawers, put it into the boxes, put the boxes on a shelf, and put the drawers in the freezer, and I'm good to go!Chris Grinter wrote: ↑Sun Nov 26, 2023 9:23 pmHaha yes just need the discipline to use the freezer for nothing other than pest management.jhyatt wrote: ↑Sun Nov 26, 2023 2:54 pmGot one, but it's too full of boxes of papered leps to hold any drawers!Chris Grinter wrote: ↑Sun Nov 26, 2023 6:07 am A chest freezer can fit drawers vertically, years ago I had one in a lab that could easily fit 6 at once. Pretty cheap to purchase and run.
jh
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Re: Fumigant Lifetime
by jhyatt » Sun Nov 26, 2023 10:49 pm
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Re: Fumigant Lifetime
by Chris Grinter » Sun Nov 26, 2023 9:23 pm
Haha yes just need the discipline to use the freezer for nothing other than pest management.jhyatt wrote: ↑Sun Nov 26, 2023 2:54 pmGot one, but it's too full of boxes of papered leps to hold any drawers!Chris Grinter wrote: ↑Sun Nov 26, 2023 6:07 am A chest freezer can fit drawers vertically, years ago I had one in a lab that could easily fit 6 at once. Pretty cheap to purchase and run.
jh
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Re: Looking for "Käfer Mitteleuropas - Larven"
by Lucavs » Sun Nov 26, 2023 7:24 pm
Kafer Mitteleuropas. Larven. L1. Adephaga
Autor: Klausnitzer, Bernhard
Erscheinungsjahr: 1991
Sprache: Deutsch
Seitenzahl:
ISBN-NR.: 3827406986
Verlag: Spektrum Akademischer Verlag
Kafer Mitteleuropas. Larven. Bd L2. Myxophaga, Polyphaga 1
Autor: Klausnitzer, Bernhard
Erscheinungsjahr: 1994
Sprache: Deutsch
Seitenzahl:
ISBN-NR.: 3827406994
Verlag: Spektrum Akademischer Verlag
Kafer Mitteleuropas. Larven. Bd L3. Polyphaga 2
Autor: Klausnitzer, Bernhard
Erscheinungsjahr: 1996
Sprache: Deutsch
Seitenzahl: 335 S.
ISBN-NR.: 3827407036
Verlag: Spektrum Akademischer Verlag
Kafer Mitteleuropas. Larven. Bd L4. Polyphaga 3
Autor: Klausnitzer, Bernhard
Erscheinungsjahr: 1997
Sprache: Deutsch
Seitenzahl:
ISBN-NR.:
Verlag: Spektrum Akademischer Verlag
Kafer Mitteleuropas. Larven. Bd L5. Polyphaga 4
Autor: Klausnitzer, Bernhard
Erscheinungsjahr: 2001
Sprache: Deutsch
Seitenzahl: 300 S.
ISBN-NR.: 3827409292
Verlag: Spektrum Akademischer Verlag
Kafer Mitteleuropas. Larven. Bd.6. Polyphaga
Autor: Klausnitzer, Bernhard
Erscheinungsjahr: 2001
Sprache: Deutsch
Seitenzahl: 300 S.
ISBN-NR.: 3827409292
Verlag: Spektrum Akademischer Verlag
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Re: Fumigant Lifetime
by jhyatt » Sun Nov 26, 2023 2:54 pm
Got one, but it's too full of boxes of papered leps to hold any drawers!Chris Grinter wrote: ↑Sun Nov 26, 2023 6:07 am A chest freezer can fit drawers vertically, years ago I had one in a lab that could easily fit 6 at once. Pretty cheap to purchase and run.
jh
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Re: Looking for "Käfer Mitteleuropas - Larven"
by adamcotton » Sun Nov 26, 2023 8:34 am
Adam.
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Looking for "Käfer Mitteleuropas - Larven"
by Lucavs » Sun Nov 26, 2023 7:38 am
I'm looking for a while for the pages dedicated to the description and iconography of the larvae of species belonging to the genus Stephanopachys, (Bostrichidae). Can you help me? In Italy I have a lot of difficulty finding this source, where I believe they are well described.
A thousand thanks
Luca
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Re: Fumigant Lifetime
by Chris Grinter » Sun Nov 26, 2023 6:07 am
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Re: Yearly donation to the forum - Premium Members 2024
by livingplanet3 » Sat Nov 25, 2023 5:35 pm
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Yearly donation to the forum - Premium Members 2024
by wollastoni » Sat Nov 25, 2023 3:06 pm
You will soon receive an email from me about the yearly donation to Insectnet.
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The yearly cost of the Classifieds software, the new forum development and the free-attachment-for-all policy is a high cost.
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Re: "Reptile Heaven" and "WildinsectUSA" = SCAM
by wollastoni » Fri Nov 24, 2023 2:14 pm
I see they have "improved" their scam listing now some very rare species at high price (but affordable for the rarity) : https://reptileheaven.com/product/agria ... ournierae/ The real value of this pair would be at least $1,000.
I guess they steal pictures on the web of sold rarities and list them as if they have it. A simple google search about the rarity can lead you to their website.
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Re: Fumigant Lifetime
by jhyatt » Tue Nov 21, 2023 7:12 pm
Yep, it's a cholinesterase inhibitor. My bug room is a roughly 60' X 40' open basement, fairly well ventilated, and I don't spend huge amounts of time there. Still, it's a concern. Paradichlorobenzene also can produce neurological effects. PDCB is more volatile than dichlorvos and needs replacement much more often, so I've switched to dichlorvos. But I think I will follow Shuey in using smaller pieces than I have been.
It's a dilemma; I can see why big museums have gone over to watching and freezing when infestations occur. But without a really big freezer, that's impractical at home.
jh
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Re: Fumigant Lifetime
by mothman55 » Tue Nov 21, 2023 5:45 pm
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Re: Enough already, with the fake aberrations
by EdTomologist » Tue Nov 21, 2023 4:41 pm
As someone who wrote their thesis on the topic of wing development signaling, tungstate is mainly effective for nymphalids and certain groups of butterflies. It’s less toxic than other compounds and easily accessible. This makes it a good and easy option for producing aberrations.
There are in reality numerous compounds that induce aberrations through different mechanisms. Some of them mimic stress responses that result in darker wings. It’s a common immune response in insects to produce melanin.
There are also variable patterns that can be induced depending on the stage of injection.
I have been working with a new compound that can actually lighten the wings instead of darken them.
Given that my work is still to be published I don’t want to reveal too much. I also do have a concern regarding individuals using my work to sell man made aberrations but I believe it’s more important to have knowledge freely accessible.
I should also note that unlike tungstate where the mechanism of action (how it works) is unknown, a lot of other compounds we know exactly how they act. The main difference between compounds is their toxicity, the cost, and the difficulty in acquiring the compounds (must have scientific institutional purchase accounts).
Below is an artificial aberration from my research a while back plus link to other pictures.
[media] https://x.com/edtomologist/status/17270 ... UjOYW-YQdw[/media]
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Re: Fumigant Lifetime
by Jshuey » Tue Nov 21, 2023 3:21 pm
John
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Re: Fumigant Lifetime
by jhyatt » Tue Nov 21, 2023 3:07 pm
Of course the usable lifetime may vary from drawer to drawer, depending on the rate of air exchange inside the particular drawer. I renewed all of mine about 1 year ago; I guess I'll let them go at least another year, or 2 or 3, unless I find an infestation... and I'll replace it in any drawers where I notice an unusually pale chunk of dichlorvos strip. I suspect there's no valid general answer to my original question.
jh
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Re: Fumigant Lifetime
by Jshuey » Tue Nov 21, 2023 2:02 pm
I'll be renewing it all over the long weekend this week.
John
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Re: Enough already, with the fake aberrations
by teinopalpus » Tue Nov 21, 2023 9:26 am
And then .. sorry I cant skip that ... climatic change. Species are moving to new places , also on same place weather is changing and dramatic weather anomalies are present frequently and surely phenotype will react to changed conditions.
So as for me - as long as specimen has correct label information with all relevant data, it is OK. And it is only decision of collector if he find value of such specimen for his study/collection.
Jan
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Re: Fumigant Lifetime
by Paul K » Tue Nov 21, 2023 1:36 am
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Fumigant Lifetime
by jhyatt » Mon Nov 20, 2023 8:53 pm
But I wonder how one can tell when the fumigant is exhausted and should be replaced. I've been doing this when the originally deep yellow squares fade to a very pale yellow color. This takes about 3-4 years in a drawer of average tightness, in my experience.
Am I being risky and should be replacing them more often? Or am I leaving money on the table by replacing them too frequently? Does anyone have any actual data on the useful lifetime of dichlorvos strips?
Cheers,
jh