Influence of Mesh Composition, Velocity, and Run Time on the Catch and Length Composition of Juvenile Alewives (Alosa pseudoharengus) and Blueback Herring (A. aestivalis) Collected by Pushnet

摘要: Significant main and interaction effects were found in the influence of net mesh composition, speed, run time on catch per cubic metre length composition juvenile alewives (Alosa pseudoharengus) blueback herring (A. aestivalis) collected by a bow-mounted pushnet at dates when fish size species abundance differed. for type speed occurred both mean August and, with one exception, September. Interaction often differed between but, species, × was most common. Seasonal decreases increases resulted fewer generally less significant effects. Such interactions will complicate comparison studies where type, differ. I conclude that quantitative sampling Alosa 30–90 mm total can be accomplished using bo...