You are here: Home
/ Publication Information
Title: Life history variation in the Yazoo Shiner (Notropis rafinesquei) in three Mississippi streams
Author: Hagg, Wendell R.; Commens-Carson, Amy M.; Warren, Melvin L. Jr.;
Source: The American Midland Naturalist 158:306-320
Publication Series: Miscellaneous Publication
Description: We investigated the life history and demographics of Notropis rafinesquei(Cyprinidae) in three streams in north Mississippi, USA, over 2 y. Size at maturity (22.5-29.3 mm SL) and the timing and duration of the reproductive period (Apr.-Aug.) were similar among all three streams in both years. We consistently detected two young-of-the-year cohorts, one strong cohort appearing in early summer and the other of varying strength in fall. In contrast, we found striking variation in most other life history traits including female length, body weight, clutch size, ova diameter and sex ratios, despite the close geographic proximity of these populations. Life history traits of all other species in the Notropis longirostris clade (N. ammophilus, N. longirostris and N. sabinae) are similar to N. rafinesquei, but like N. rafinesquei, vary widely among and within species. The highly plastic nature of reproductive traits in N. rafinesquei and other members of the N. longirostris clade is likely an important adaptation that allows these animals to maintain large populations in the often physically unstable and unpredictable stream environments of the Gulf Coastal Plain, USA.
Keywords: Yazoo Shiner, Notropis rafinesquei(Cyprinidae)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
XML: View XML
Hagg, Wendell R.; Commens-Carson, Amy M.; Warren, Melvin L., Jr. 2007. Life history variation in the Yazoo Shiner (Notropis rafinesquei) in three Mississippi streams. The American Midland Naturalist 158:306-320
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility