TITLE

Does hypoxia reduce habitat quality for Lake Erie walleye ( Sander vitreus)? A bioenergetics perspective

AUTHOR(S)
Brandt, Stephen B.; Costantini, Marco; Kolesar, Sarah; Ludsin, Stuart A.; Mason, Doran M.; Rae, Christopher M.; Zhang, Hongyan; Kraft, Cliff
PUB. DATE
May 2011
SOURCE
Canadian Journal of Fisheries & Aquatic Sciences;May2011, Vol. 68 Issue 5, p857
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In Lake Erie, the duration and extent of hypoxia (dissolved oxygen (DO) ≤ 2 mg·L-1) has increased in recent years, yet little is known on the corresponding impact on its fish, particularly the highly valued walleye () fishery. Here, we quantified the impact of hypoxia on walleye habitat quality, using a spatially explicit growth rate potential (GRP) modeling approach, which integrates the spatial arrangement of biological (prey availability) and environmental (DO, temperature, irradiance) measures. Data were collected along two types of transects: 60 km north-south transects (each sampled once during day and night) and 5 km east-west transects (sampled every 4 h for 24 h) during August (pre-hypoxia), September (peak-hypoxia), and October (post-hypoxia) 2005. Overall, the average monthly amount of high quality habitat (GRP > 0 g·g-1·day-1) for walleye declined slightly with hypoxia (<2.0%); however, hypoxia appeared to enhance habitat quality by concentrating prey in favorable temperature, DO, and light conditions. In September, percentages of walleye growth rates were at the upper end of the range, much more so than during August or October. Although an understanding of walleye distributions, foraging, and growth in relation to hypoxia is needed, our results do not suggest that hypoxia is negatively influencing walleye through reduced habitat quality.
ACCESSION #
65537002

 

Related Articles

  • Effect of prey abundance and size on the distribution of demersal fishes. Johnson, Andrew F.; Valls, Maria; Moranta, Joan; Jenkins, Stuart R.; Hiddink, Jan G.; Hinz, Hilmar; Rochet, Marie-Joëlle // Canadian Journal of Fisheries & Aquatic Sciences;Jan2012, Vol. 69 Issue 1, p191 

    Many demersal fish species rely on benthic prey as food sources for part of, or in some cases, all of their life history. We investigated the relationships between prey and predator abundance and prey size and predator mouth gape size for nine demersal fish species. Of the species analysed, four...

  • Movement patterns of the seastar Heliaster helianthus in central Chile: relationship with environmental conditions and prey availability. Barahona, Mario; Navarrete, Sergio A. // Marine Biology;Mar2010, Vol. 157 Issue 3, p647 

    The rates and patterns of feeding and displacement of predators constitute two of the most important plastic behavioral responses that allow individuals to respond quickly to changes in abundance of their prey, predation risks and to rapid alterations in environmental conditions. In this study,...

  • Reevaluation of a walleye ( Sander vitreus) bioenergetics model. Madenjian, Charles; Wang, Chunfang // Fish Physiology & Biochemistry;Aug2013, Vol. 39 Issue 4, p749 

    Walleye ( Sander vitreus) is an important sport fish throughout much of North America, and walleye populations support valuable commercial fisheries in certain lakes as well. Using a corrected algorithm for balancing the energy budget, we reevaluated the performance of the Wisconsin...

  • WALLEYES On The Rise. McNally, Bob; Gilmer, Marcus // Fish & Hunt Magazine;Fall2002, Vol. 1 Issue 3, p72 

    Focuses on the increasing number of walleye fishermen. Appearance of walleye; Habitat of the fish; Techniques in walleye fishing.

  • Big time for walleyes. Sternberg, Dick // Outdoor Life;Jun96, Vol. 197 Issue 6, p64 

    Discusses timing in walleye fishing in the United States. Walleye spawning and binge seasons; Peak of the walleye spawn at different latitudes; Basic strategy for appropriate timing of the activity; Location of the best walleye areas in the United States.

  • CONFESSIONS OF a walleye whacker. Galfa, Steve // Ontario Out of Doors;Jul2002, Vol. 34 Issue 6, p66 

    Relates experiences of visiting Nightcrawler Willy's, a place providing aids for fishing in Ontario. Description of the place; Services and product offerings; Techniques in catching walleye fishes.

  • Walleyes in the Uglies. Gibbs, Jerry // Outdoor Life;Aug2001, Vol. 208 Issue 1, p22 

    Provides information on fishing for walleyes. Tips in spotting for the best area to fish for walleyes; Technique in bait prepation; Tips in handling weed tangles. INSET: BUILDING A BETTER BEACON.

  • Deep Thinking for Walleyes. Sternberg, Dick // Outdoor Life;Nov2002, Vol. 209 Issue 8, p76 

    Focuses on walleye fishing during the late-fall season. Depth limit in late-fall walleye fishing; Presentation of bait; Factors to consider in choosing a fishing rod. INSETS: A Fishing Tip for Better Hookups;How to Tie a Double Uni-Knot.

  • Cloud, wind, and walleye. Ellis, Gord // Ontario Out of Doors;Mar2003, Vol. 35 Issue 2, p44 

    Focuses on various factors that play important roles in Walleye fishing by anglers. Importance of rain for walleye fishing; Influence of wind in walleye fishing; Position of the fish according to the wind. INSET: SPORTING TIMES.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics