Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

The Southern Brook Lamprey (Ichthyomyzon gagei) in the St. Croix River Drainage of Wisconsin and Minnesota

Philip A. Cochran
Copeia
Vol. 1987, No. 2 (May 13, 1987), pp. 443-446
DOI: 10.2307/1445782
Stable URL: http://www.jstor.org/stable/1445782
Page Count: 4
  • Read Online (Free)
  • Download ($12.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Southern Brook Lamprey (Ichthyomyzon gagei) in the St. Croix River Drainage of Wisconsin and Minnesota
Preview not available

Abstract

Adult brook lampreys from tributaries to the St. Croix River in Wisconsin and Minnesota are morphologically indistinguishable from Ichthyomyzon gagei and most probably represent a relict population separated by 900 km from the nearest previously reported population in southern Missouri. An alternate hypothesis is that the St. Croix specimens represent an independently evolved satellite species of I. castaneus. Regardless of their taxonomic identity, the St. Croix populations are unique and should be afforded special status by appropriate natural resource agencies until their distribution and abundance can be ascertained.

Page Thumbnails

  • Thumbnail: Page 
[443]
    [443]
  • Thumbnail: Page 
444
    444
  • Thumbnail: Page 
445
    445
  • Thumbnail: Page 
446
    446