Interesting. So it's localized selection against a really plastic gene. In
other words... Find the hottest population in the summer and then collect
them in the fall once it cools down and they're out of the stress period for
the best whack at success in home aquaria. The locality has already made
its selection... It's kinda like buying fragments of coral that were
propogated instead of buying wild colonies. We already know it will do well
in aquaria because, well, it was grown there.
I had a guess like this about brook silversides as well below a very very
very eutrophied lake with amazing amounts of suspended fine clay
particles... Very counter intuitive for silversides. The plan is to give
them a comprehensive premptive treatment and see if we can't do better than
the two weeks (and feeding) but still dying without any treatment. I hope I
can get them through... They'd sure be nice to keep, and this seems to be
the genotype to work with.
Speaking of getting those fish... I'll be doing a fairly comprehensive
survey of the Great and Little Miami Rivers next weekend. Anyone need fin
clips of anything that would occurr there? We're going after greensides,
but I'm sure we're going to run into a lot of other things and will already
be set up to make those collections. We'll be doing the same for the Scioto
and Muskingum later this fall.
Also, Mike S, good to see you back in these parts. Rex Strange (a former
member of Mayden's lab) presented a semi-comprehensive look at all North
American taxa at the Lake Erie Center this summer for part of our public
seminar series. We dropped in a slide of a certain someone with an Ohio
lamprey attached to his forehead. Hope that was okay. The folks at the
meeting sure appreciated it :)
Todd
The Muddy Maumee Madness, Toledo, OH
It's never too late to have a happy childhood.
http://www.farmertodd.com
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