Does anyone known where can I get a stock of "clean" Caenis larvae specimens to develop an ecological study? I mean I need lab-growed specimens. Or do you know the best way to get the eggs for lab-growing them? Thanks a lot.
Hello my dear friend
i think its very difficult to collect eggs of mayflies coz the adults laying their eggs in early march.. That better way are to collecting their nymphs in clean and stony bottom surface water in any time through the year
thanks
Hello my friend
yes that right the nymphs stay under water more than one year but adults not stay in air long time i think just the time for reproduction and then die
Friends i do have a good collection of Ephemeroptera from India. I am doing research on Trichoptera. Can any body provide me some basic literature like keys and terminology for studying this group....
Hi Sajad,
try to find papers/keys on Ephemeroptera in databases (e.g. http://scholar.google.sk/scholar?q=ephemeroptera+india&hl=sk&btnG=H%C4%BEada%C5%A5) and download them from
http://www.famu.org/mayfly/mfbib.php
if they are not directly available for you
Dear Laia,
you should cathc´ch some female adults and get the eggs. Some methods are published in papers focused on hatching, larvae growth, ... etc (eg http://www.tandfonline.com/doi/abs/10.1080/02705060.1983.9664597)
Thanks a lot Peter, That's what I'm trying, but it seems a long process... as some of you commented Caenis nymphal stage seems eternal... I have them in an refrigerate room, but I could not get eggs nor flying adults yet... I will look into those articles you mention, thanks again! In fact I'm searching for endosymbiont fungi and need the nymphs, the eggs and the adults to perform some ecological experiments. Thanks!
Hi Laia,
it is easier to catch oler larvae (with black wingpads) and breed them. or there are methods how to catch adults from stream with a Caenis population.
how cold is water in your aquarium? (if it is too cold it can slow down the larvae development.) and larvae need adequate food source for their development.
and... it is easier to breed a parthenogenetic population if you need eggs and new generation of larvae :-)
HI Peter,
I keep the aquarium at the same temperature of the original source (about 11ºC). There was a mix of young and mature nymphs. I try to keep the algae from the original source alive to feed them more naturally.
It would be wonderful if could get parthenogenic females, sure! but how can I know that?? Just after empirical corroboration, right?
;)
Thanks!
Hi Laia,
it seems to be ok (t and food)... just wait :-)
we know only parthenogenetic populations of some sp., both sexual and parthenogenetic in another sp. and only sexual in the rest of sp. It is the same with Caenidae. you will see if there are only females in your population.
may i have a question on Harpellales?
Hi Peter,
Sure I work mainly on Harpellales, and if you work with nymphal insects and their gut content , probably you may have seen them... !
hi Laia,
yes, i do.
there are some stonefly larvae with "anal gills" = Harpellales sticking out. they occur only in some species. do you know why? is it special Harpellales sp. or ...?
Hi Peter,
great! when you see those anal gills, these are in fact species of Orphella, a genus of Harpellales which is interesting indeed, and we are actually working on it to settle a possible new taxonomy. I would love to see those thalli! They may occur only in some species because certain Orphella may be highly specific to their hosts, although i have observed more often a genus-or family level specificity. Could you mount some of those anal gills in a microscopic slide? or could you take some pictures? That would be great! Maybe you are looking to a new species!
That's amazing!
Laia
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