sampling methods

Question 1

Handling fish and stress

Answer 1

Handling fish induces both acute and chronic stress responses

Acute Increases in stress hormones triggering increased metabolic rate, oxygen
consumption decrease osmoregulation and buoyancy

Chronic: Decreased growth rates loss of feeding and reproductive opportunity and
changes in behaviours

Question 2

Passive and active techniques What the difference?

Answer 2

Passive: Gear set up and fish passively move into it, entangled, trapped, or even angled Active: Gear actively moved to target fish aggregation

Question 3

Gear selectivity and/or efficiency?

Answer 3

Selectivity: Gear somehow targets only certain portion of available targets (e.g., size, species, sex of fish)
Efficiency: Catch per unit time or effort that the gear is used

Question 4

Types of fishing techniques

Answer 4

angling (fish rod) (active)
seining (active)
dip nets (active)
fyke net (passive)
minnow trap (passive)
hoop nets (passive)