There is certainly a learning oportunity here. F.dispar and F. blairae distributions appear to be distinct according to Peterson's but I'm sure there are zones of overlap. Is mate selection present? Which gender does the selecting? Does a F. blairae male have selective preference over F. dispar for the females? Is crossbreeding found in captivity? In the wild? Well, I have my work cut out for me.
Locally, we seem to have a couple of different morphs. Some of individuals I found at a different creek had brilliant blue eyes with a blue bar passing vertically throught the eye rather than the black bar and brown eye. I don't know if this is seasonal (mating colors) or not. Now, back to downloading "Gotta Jiboo" by Phish ;-)
> From: Christopher Scharpf <ichthos_at_charm.net>
> Date: 2002/09/05 Thu PM 06:28:48 CDT
> To: <nanfa_at_aquaria.net>
> Subject: Re: NANFA-- Re: Fundulus blairae
> John Bongiovanni wrote:
> > I'm trying to get a copy of his research. I am particularly interestested in
> > Dr. Cashner's study regarding the selection of his samples. Were the samples
> > taken from one location or throughout the geographical range of the organism.
> > I would suspect some variation in genetic markers between the different
> > geographic populations. Are the samples of "blairae" pooled or was a single
> > population used as the Type population.
> > This whole dicussion is what makes science fun!
> I'm glad you think this is fun! So do I!
> Unless something much more recent has been published that I don't know
> about, I presume that Cashner paper in question is "Phylogentic Studies of
> the Genus Fundulus," which appeared in the 1992 book *Systematics,
> Historical Ecology, and North American Freshwater Fishes*.
> In their analysis of the subgenus Zygonectes, Cashner et. al. write that an
> analysis of allozymic data unambiguously supports four distinct taxa...
> F. escambiae
> F. lineolatus
> F. notti
> F. blairae + F. dispar
> ...and that fixed allelic or significant genotype frequency differences were
> not observed between populations of F. blairae and F. dispar.
> Nevertheless, F. blairae is still regarded as a full species by every list
> and resource I've checked (e.g., CAS Catalog of Fishes, AKA Killifish Master
> Index), including the upcoming AFS list, which usually serves as the
> standard that other journals and institutions follow.
> If you'd like a copy of the Cashner paper, the book is widely available. Or
> I can photocopy it and send it to you.
> Chris Scharpf
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/ reflect the beliefs or goals of the North American Native Fishes
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/ subscribe, unsubscribe, or help in the body (not subject) of an email to
/ nanfa-request_at_aquaria.net. For a digest version, send the command to
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/ For more information about NANFA, visit our web page, http://www.nanfa.org