link to AFSC home page
Mobile users can use the Site Map to access the principal pages

link to AFSC home page link to NMFS home page link to NOAA home page

Fisheries Behavioral Ecology
Research Topic 3: Conceptual Model of Bycatch Mortality

Fisheries Behavioral
Ecology Program (FBE)
Staff and Students
Research Topics
Fish and Environment
Fish Habitat
Bycatch Mortality
Fishing Gear
Program Facilities
Focal Species
Field Studies
Program Publications
Site Map

The first step in studying bycatch mortality in the laboratory is to develop a conceptual model for the factors that control bycatch mortality.  This model gives a context for hypothesis testing of individual factors and combinations of factors.

Conceptual diagram of interacting factors in discard mortality.

A conceptual diagram of interacting factors in discard mortality for fish caught with deepwater gear (trawl, pot, hook and line). The curved line indicates fish path at depth and the surface during capture and discard. Selected key factors are indicated. Increasing stress level is indicated at the bottom of the diagram as interaction of factors increases initial capture stress.  For further information on bycatch stressors see Davis (2002).


Steps for Studying Bycatch Mortality in the Laboratory
[ Step 1] [ Step 2 ] [ Step 3 ] [ Step 4 ] [ Step 5 ] [ Step 6 ]


Research Topic 1: Fish and Environment

Research Topic 2: Fish Habitat

Research Topic 3: Bycatch Mortality

Research Topic 4: Fishing Gear


Last updated 27 March, 2009

            | Home | Site Map | Contact Us | FOIA | Privacy | Disclaimer | | Accessibility | Print |           doc logo