Effects of shear on eggs and larvae of striped bass, morone saxatilis, and white perch, M. americana

Morgan, Raymond P II and Ulanowicz, Robert E. and Rasin, V. James Jr and Noe, Linda A. and Gray, G. Brooke (1976) Effects of shear on eggs and larvae of striped bass, morone saxatilis, and white perch, M. americana. Transactions of the American Fisheries Society, 105(1), pp. 149-154.

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Abstract

Shear stress, generated by water movement, can kill fish eggs and larvae by causing rotation or deformation. Through the use of an experimental apparatus, a series of shear (as dynes/cm2)-mortality equations for fixed time exposures were generated for striped bass and white perch eggs and larvae. Exposure of striped bass eggs to a shear level of 350 dynes/cm2 kills 36% of the eggs in 1 min; 69% in 2 min, and 88% in 4 min; exposure of larvae to 350 dynes/cm2 kills 9.3% in 1 min, 30.0% in 2 min, and 68.1% in 4 min. A shear level of 350 dynes/cm2 kills 38% of the white perch eggs in 1 min, 41% in 2 min, 89% in 5 min, 96% in 10 min, and 98% in 20 min. A shear level of 350 dynes/cm2 applied to white perch larvae destroys 38% of the larvae in 1 min, 52% in 2 min, and 75% in 4 min. Results are experimentally used in conjunction with the determination of shear levels in the Chesapeake and Delaware Canal and ship movement for the estimation of fish egg and larval mortalities in the field.

Item Type: Article
Title: Effects of shear on eggs and larvae of striped bass, morone saxatilis, and white perch, M. americana
Personal Creator/Author:
CreatorsEmail
Morgan, Raymond P II
Ulanowicz, Robert E.
Rasin, V. James Jr
Noe, Linda A.
Gray, G. Brooke
Refereed: Yes
Journal or Publication Title: Transactions of the American Fisheries Society
Volume: 105
Number: 1
Page Range: pp. 149-154
Date: 1976
ISSN: 0002-8487
Projects: UMCES - CBL
Issuing Agency: University of Maryland Center for Environmental Science. Chesapeake Biological Laboratory
Additional Information: UMCES(University of Maryland Center for Environmental Science. Contribution no. 666
Uncontrolled Keywords: Striped Bass; White Perch; Shear
Subjects: Management
Fisheries
Engineering
Item ID: 1988
Depositing User: Kathleen Heil
Date Deposited: 06 Apr 2009 21:04
Last Modified: 29 Sep 2011 19:50
URI: http://aquaticcommons.org/id/eprint/1988

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