Erilised püügiviisid
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Fish in an Electrical Field
· Behavior change or
reactive movement
· Trauma from
Stress due to
physiology
Injury due to
mechanical
tissue damage
Fish in an Electric Field
(cont.)
· Low AC - fish lines up perpendicular to
flux line
·
· - +
·
·
· High AC - muscle contraction and tetany
Injuries to Fish
· Hemorrhages or bruising of soft tissue
· Fractures of vertebrae
·
·
· NOTE: AC is more likely to injure fish than
pulsed DC Pulsed DC is more likely to injure
fish than continuous DC
8.3 Electrofishing system
· power source and power control unit
· meters
· wires & electrodes
· other equipment (lights, nets, pumps,
livewells)
· boat
· shocking system
· backpack shockers
Biological Factors
· Species - shad susceptible...catfish not as
much
·
·
·
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