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Daphnia Net
Started by
Guest_frigginchi_*
, Nov 21 2011 09:50 AM
6 replies to this topic
#2
Guest_Newt_*
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Posted 21 November 2011 - 10:13 AM
I've used a planton net like this: http://el.erdc.usace...ankton_nets.htm. They are a very effective way to get large numbers of daphnia, etc., as long as you are careful of obstructions (sticks, etc.). I think your net would work similarly , you'd just have to rinse the bugs off the net instead of having them in a bottle.
Different species of cladocerans, copepods, ostracods, fairy shrimp, midges, etc. have population peaks under different conditions, so there's a good chance you'll harvest something at any time of year.
Different species of cladocerans, copepods, ostracods, fairy shrimp, midges, etc. have population peaks under different conditions, so there's a good chance you'll harvest something at any time of year.
#3
Guest_EricaWieser_*
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Posted 21 November 2011 - 03:53 PM
Oh my goodness it's forty dollars, and ten for shipping. Really? For a fine net? I think you can make one for less than $50. I used to make my own breeding boxes for my female swordtails. I just went to Home Depot and bought some fiberglass screen for $5. If you find out what the mesh size of the daphnia net is, you could shop around and see how much that same mesh would cost you elsewhere if it wasn't pre-cut into that form. Which as Newt pointed out is lacking the bottle at the end that would make your life easier. This is what the kind of net that is dragged through water usually looks like: http://www.daff.gov....e/turtlenet.gif (yours might not have the turtle exclusion device).
If you tell me the mesh size I'll research it with you. I'm curious if it's more something like cheese cloth or nylon or 1/8" fiberglass or whatnot.
If you tell me the mesh size I'll research it with you. I'm curious if it's more something like cheese cloth or nylon or 1/8" fiberglass or whatnot.
Edited by EricaWieser, 21 November 2011 - 03:54 PM.
#4
Guest_nativeplanter_*
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Posted 21 November 2011 - 05:13 PM
I'm curious if it's more something like cheese cloth or nylon or 1/8" fiberglass or whatnot.
Plankton nets are made of rather fine material (picture a baby brine shrimp net). I've tried making one with paint strainer mesh, which is a bit coarser than plankton net material, and it did not work nearly as well, even when doubled up. Perhaps a trip to a fabric store might yield something more suitable.
#5
Guest_fundulus_*
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Posted 21 November 2011 - 08:25 PM
Try organza silk if you make your own net. I use it for driftnets that have caught Daphnia on occasion, which is unusual because we set them in high-gradient streams. Organza is available from places like Dharma Trading Co. for ~$6/yard. It has a really fine mesh, of about 65 micrometers.
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