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Assessment of Hybrid Striped Bass Fisheries in Tennessee

TWRA biologist Pat Black and TTU graduate student Matt Petersen attach an ultrasonic tag to an angled hybrid striped bass in oprder to monitor its post-release survival.

Duration

September 2010 - August 2012

Narrative

Hybrid striped bass (also known as Palmetto Bass; striped bass Morone saxatilis ♀ x white bass M. chrysops ♂) have been stocked into reservoirs in the southeastern U.S. since the 1970s and have gained widespread acceptance as a sportfish. Whereas catch-and-release (CR) mortality of striped bass has been thoroughly studied across the U.S., similar information for hybrids is scarce. Although mortality of hybrids following CR angling in the present study was lower than what has been observed for striped bass elsewhere, CR mortality of hybrids during summer approached 40%. If CR fishing activity is shown to be high, CR mortality in summer represents a substantial source of cryptic mortality. An assessment of hybrid populations in two Tennessee reservoirs revealed a wide range in annual mortality (A = 44 and 67%) but in both systems there was little justification for managing the fisheries with a length limit other than the current 381 mm minimum total length limit.

Research Products and Activities

Thesis

  • Petersen, M.J. 2012. Hooking Mortality and Assessment of Hybrid Striped Bass Fisheries in Tennessee. MS Thesis, Tennessee Techological University, Cookeville. 63 pages.

Presentations

  • Petersen, M.J., and P.W. Bettoli. 2012. Hooking mortality of hybrid striped bass in a Tennessee lake. Annual meeting of the Southern Division of the American Fisheries Society, Biloxi, MS.
 

Current Staff

Federal Staff: 2

Masters Students: 3

Phd Students: 1

Post Docs: 1

University Staff: 2

5 Year Summary

Students graduated: 11

Scientific Publications: 48

Presentations: 86

 

Personnel

  • Phillip BettoliPrincipal Investigator
  • Matthew PetersenStudent

Funding Agencies

  • Tennessee Wildlife Resources Agency

Links

Tennessee Cooperative Fishery Research Unit Cooperators

  1. Tennessee Technological University
  2. Tennessee Wildlife Resources Agency
  3. U.S. Fish and Wildlife Service
  4. U.S. Geological Survey