Date: 29/10/2021 17:03:14
From: buffy
ID: 1809979
Subject: Pyrethrum and mosquitoes

https://www.nature.com/articles/s41467-021-22847-0

“A dual-target molecular mechanism of pyrethrum repellency against mosquitoes”

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Date: 29/10/2021 19:33:00
From: poikilotherm
ID: 1810083
Subject: re: Pyrethrum and mosquitoes

buffy said:


https://www.nature.com/articles/s41467-021-22847-0

“A dual-target molecular mechanism of pyrethrum repellency against mosquitoes”

Isn’t that just fly spray.

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Date: 29/10/2021 19:33:55
From: buffy
ID: 1810084
Subject: re: Pyrethrum and mosquitoes

poikilotherm said:


buffy said:

https://www.nature.com/articles/s41467-021-22847-0

“A dual-target molecular mechanism of pyrethrum repellency against mosquitoes”

Isn’t that just fly spray.

I think they are talking about both insecticidal and repellency aspects.

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Date: 30/10/2021 19:32:28
From: mollwollfumble
ID: 1810508
Subject: re: Pyrethrum and mosquitoes

buffy said:


poikilotherm said:

buffy said:

https://www.nature.com/articles/s41467-021-22847-0

“A dual-target molecular mechanism of pyrethrum repellency against mosquitoes”

Isn’t that just fly spray.

I think they are talking about both insecticidal and repellency aspects.

Ta. If you want an insect repellant, don’t but an “insect repellant”, buy an “insect killer” insecticide.

The mossies and other pests are smart enough to avoid insecticides.

Reply Quote
Date: 31/10/2021 19:32:02
From: mollwollfumble
ID: 1811015
Subject: re: Pyrethrum and mosquitoes

buffy said:


https://www.nature.com/articles/s41467-021-22847-0

“A dual-target molecular mechanism of pyrethrum repellency against mosquitoes”

> Pyrethrum extracts from flower heads of Chrysanthemum spp

So if I want to stop being bitten by insects I should plant Chrysanthemums?

> Pyrethrins exert potent insecticidal activities by hyper-activating insect voltage-gated sodium channels, thereby causing rapid paralysis, known as knockdown, and eventual lethality

> In this behavioral assay, mosquitoes are attracted to a human hand in a modified glove

The aerogard commercial was real science?

> These results clearly show contact-independent, smell-based repellency of pyrethrum

I wonder if mosquitos have to be trained to avoid pyrethrum? ie. they know it’s smelly, but do they know it’s dangerous if they’ve never encountered it before? For an answer, take those mosquitos not repelled by the smell and allow them to contact pyrethrum. Then take those that have survived the contact and see if they’ve learnt to avoid the smell.

> we provide strong evidence that pyrethrum exerts spatial repellency through a novel, dual-target mechanism.

I don’t actually follow what they mean by a “dual-target mechanism”. Are they saying that AaOr31 and Or31 are the same or different?

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