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Home ยป Distribution in Minnesota of the Subspecies of the Percid Fish Etheostoma nigrum, and of Their Intergrades
Distribution in Minnesota of the Subspecies of the Percid Fish Etheostoma nigrum, and of Their Intergrades
Publication Type: | Journal Article |
Year of Publication: | 1963 |
Authors: | Underhill, JC |
Journal: | American Midland Naturalist |
Volume: | 70 |
Issue: | 2 |
Date Published: | 1963 |
ISBN Number: | 00030031 |
Keywords: | Anhinga, Anhinga melanogaster, Anhinga rufa, Anhingidae, Columba, Columba palumbus, Columbidae |
Abstract: | The squamational patterns of the nape, breast and cheek of the Central Johnny darter, Etheostoma n. nigrum, and the scaly Johnny darter, E. n. eulepis, appear to be determined by incompletely dominate genes at one or a few loci. The distribution of two subspecies and their intergrades in Minnesota is complex. Intergrades, E. n. nigrum, and E. n. eulepis occur in samples from the Red, upper Mississippi, Minnesota and St. Croix drainages. There is little question about the polymorphic nature of the Johnny darters of the Great Lakes region, but several lines of evidence, morphological, ecological and distributional, make it appear undesirable to recognize the scaly Johnny darter, E. n. eulepis, as a subspecies. |
URL: | http://www.jstor.org/stable/2423071 |
Short Title: | American Midland Naturalist |
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith