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Aphid culture

I know some are well-studied model organisms, but most research seems to consist of rearing on whole plants. How effective would using detached leaves be if the leaves are stuck into a drown-proof water container for hydration and replaced periodically for freshness?

Thanks

Raising aphids
I raised aphids at home a few times. Actually, I raised syrphid flies; the aphids were just food for them. I kept a twig of the host plant in water. Sometimes I used to cover them partially with plastic to reduce evaporation and watering. Surprisingly, sometimes I had success keeping the twig inside a plastic bag. There was practically no evaporation and watering was not needed for the short time it takes a syrphid larva to go to pupa. perhaps you can use this second method and periodically replace the twig, move the aphids to their new home and throw away the old one. To me, it seems that it is fairly easy to raise some aphids at home.
Here are some of the life cycles

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