Re: NANFA-- More on convention: F. olivaceus & F. notatus

Bruce Stallsmith (fundulus_at_hotmail.com)
Sun, 27 Aug 2000 13:29:09 EDT

Martin, you wisely point out the limits of our knowledge on these fishes.
With the catenatus I'm not at all surprised that there are pronounced
population differences that may be evidence of 2 or more species where one
is recognized, largely because a lot of catenatus range is in relatively
isolated systems like the Paint Rock River of Alabama. With
olivaceus/notatus, it's more of a case of we just plain and simple haven't
looked all that closely. Jim Thomerson did his doctoral research project on
notatus/olivaceus, but if I remember correctly (a stretch!) he looked only
at populations in Tennessee. This is one of about 214 possible ideas for a
NANFA conservation research grant...

--Bruce Stallsmith

>Bruce,
>
>I've found (although I'm not nearly the Fundulus expert you are)
>that newly captured specimens have strikingly different colors than
>they do after they have settled down. Newly captured "olivaceous"
>from some drainages in my area have a GREEN band consisting of
>short vertical bars. When placed in an aquarium they look like
>regular olivaceous. The catenatus I've seen are also very different
>from your Alabama variety.
>
>
>Prost,
>
>Martin

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