Survival, Distribution, and Ion Composition in Two Strains of Brook Trout (Salvelinus fontinalis) Fry after Exposure to Episodic pH Depressions in an Adirondack Lake

DOWNLOAD

July 6, 2015 - Charles Krueger<kruege62@msu.edu>, Henry K. Van Offelen, Carl L. Schofield, Chris Keleher

Journal or Book Title: Canadian Journal of Fisheries and Aquatic Sciences

Volume/Issue: 51

Page Number(s): 792-799

Year Published: 1994

Brook trout (Salvelinus fontinalis) fry are susceptible to high mortality in acidified waters because of their
low tolerance to acidic conditions and the potential occurrence of this life stage with episodic acidification
associated with snowmelt. Prior to snowmelt, equal numbers of Assinica and Temiscamie strain fry were placed into enclosures. Twelve days after stocking, no consistent differences between strains were observed in survival, distribution, or ion composition. No fry of either strain survived in enclosures placed in shallow water (pH 4.8; 0.7 m depth). Fifty to 100% of fry of both strains survived in enclosures placed in deep water (pH 6.3; >2.0 m depth). Fry survival in long enclosures that extended from shallow to deep water was 80-99%. Within long enclosures, both strains were recovered in higher densities from middle and deep sections of the enclosures than from shallow sections. High fry survival and nonrandom distributions in the long enclosures indicated that both strains were able to avoid lethal, nearshore waters during spring snowmelt by moving to deeper water.

DOI: 10.1139/f94-077

Type of Publication: Journal Article

DOWNLOAD FILE

Authors

You Might Also Be Interested In

Accessibility Questions:

For questions about accessibility and/or if you need additional accommodations for a specific document, please send an email to ANR Communications & Marketing at anrcommunications@anr.msu.edu.

Tag List
  • center for systems integration and sustainability
Michigan State University
  • Spartans Will.
  • © Michigan State University

MSU is an affirmative-action, equal-opportunity employer, committed to achieving excellence through a diverse workforce and inclusive culture that encourages all people to reach their full potential.

Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, gender identity, religion, age, height, weight, disability, political beliefs, sexual orientation, marital status, family status or veteran status. Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Quentin Tyler, Director, MSU Extension, East Lansing, MI 48824. This information is for educational purposes only. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned.

The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707.

We comply with the Federal Trade Commission 1998 Children’s Online Privacy Protection Act (COPPA).