Re: NANFA--Fundulus dispar

Mark B (mbinkley_at_earthling.net)
Mon, 5 Jun 2000 16:15:29 -0400

At 1:28 PM -0400 6/5/00, Michiganfish_at_aol.com wrote:
>Mark
>My tanks are about 60 F. I've watched the eggs under a microscope and they
>have just developed that slow . I thought it was odd because This spring the
>Rainbow, Greenside, dusky, and Iowa darters all took 6 to 8 days. N.
>Redbelly and Fatheads took 6 days and Rosyface shiners that just spawned took
>less then 4 days. I guess I just haven't worked with Killis in awhile.

Yeah, I think even NA killies like it warm for breeding and hatching. But
I could be mistaken. From other comments, sounds like maybe the NA killies
have some interesting strategies to be successful with low egg production
and adaptation to changing environmental conditions. In a temperate
climate, temperature, water level, and plant cover change continuously
thoughout the year, especially in the spring and summer. It may be
advantageous to have delayed hatching of some of the eggs. Just wild
speculation!

Mark Binkley
Columbus Ohio USA <))><
mbinkley_at_earthling.net

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