404 Final Review: Recreational and Commercial Fisheries Management

Question 1

What is MSY? Understand the assumptions and problems
associated with this approach

Answer 1

-Maximum sustainable yield.
- Focus on quantity not quality.
-Assumes that the population is renewable that the carrying capacity would remain stable

Question 2

How does evidence-based and ecosystem-based fisheries
management differ?

Answer 2

Evidence based: uses scientific data for decisions (fish populations, fish practices)

Question 3

Why might some jurisdictions have more or less complex
fisheries regulations than others?

Answer 3

Depends on demand, native species, history of stoked species, types of fishing

Question 4

What does broodstock mean

Answer 4

Mature fish that breed

Question 5

How do biologists know what size = mature fish?

Answer 5

Otoliths. scales/bones, surveys, reproductive organs, and looking at the size/frequencies of the fish

Question 6

T/F protective slot limits are used to thin a population in order to
reduce growth

Answer 6

False

Question 7

What is the difference between recreational and commercial
fisheries?

Answer 7

Recreational-anglers, sport, sustenance commercial-revenue-based, usually large operations

Question 8

T/F bait fisheries are a type of commercial fishery

Answer 8

True

Question 9

T/F bow fishing is a type of recreational fishery

Answer 9

True

Question 10

T/F Rights-based or traditional fishing is regulated differently
than recreational and commercial fishing

Answer 10

True

Question 11

Why might fishing seasons vary with latitude or region?

Answer 11

The fish will have different spawning and rearing times because of the temperature difference. Ice of etc…

Question 12

Why does SK close most fisheries in the spring?

Answer 12

For the spawning

Question 13

What gamefish have possession limits in SK?

Answer 13

Artic grayling, burbot, walleye, pike, perch, channel catfish, whitefish/cisco, goldneye/mooneye, largemoutb bass, rock bass, sauger/saugeye.

Question 14

What is the primary reason that Walleye and Sauger co-
regulated?

Answer 14

They are hard to identify and they hybridize

Question 15

What is the consequence of co-regulating different species?

Answer 15

The difference in maturity size and growth rates

Question 16

Know which species are protected from angling in SK (possession
limits = 0)

Answer 16

Big mouth baffulo, smallmouth bass, largemouth bass and sturgeon.

Question 17

What is a “special regulation” and why do some waters have
them

Question 18

What is a “special regulation” and why do some waters have them?

Question 19

Understand the difference between a J-hook, Circle Hook, and treble?

Question 20

T/F Barbed vs barbless hooks have a consistent impact on fish survival?

Answer 20

False

Question 21

Difference between artificial, live and dead bait

Answer 21

Artificial-spoons, plastic lures, spinners, jigs
Live-Live leeaches, live worms, live maggots,
Dead- Dead minnows

Question 22

Why are there limitations to the types of live bait that can be
used in SK?

Answer 22

Because minnows are hard to ID and many can be invasive to a waterbody and disrupt the ecology

Question 23

Discuss 3 reasons we stock fish

Answer 23

1. Creates new opportunities, such as new fisheries.
2. It supplements natural populations, supplements natural reproduction.
3. It supports recovery, such as rehabilitating the populations or reintroduction of a native fish species.

Question 24

What is meant by a “PGT” fishery?

Answer 24

Put-grow-take, type of stocking that provides hatchery-independent angling opportunities and is often used to divert pressure away from over fished lakes.

Question 25

Why is “supplemental stocking” becoming less common?

Answer 25

When a lake has natural reproduction, the stocked fish will have negative impacts on the wild populations such as outcompeting and stunting

Question 26

What exotic fish species are stocked in SK?

Answer 26

Rainbow, Brown, Brook, Splake, Tiger Trout

Question 27

What native fish species are stocked in SK?

Answer 27

Walleye, lake trout, northern pike, perch, lake sturgeon, lake whitefish

Question 28

What major factors need to be considered when determining what fish species to stock?

Answer 28

Recovery, re-establishment, interest, concern, existing fish community, stakeholder etc...

Question 29

How can stocking rate and stocking frequency impact the type of fishery created?

Answer 29

May affect fish size, fishing success.

Question 30

Stocking rates are driven by the __________________ of the system

Answer 30

Biological capacity

Question 31

Discuss 3 reasons we may decide to NOT stock fish in a particular system

Answer 31

1. Native fish cant compete 2. Preserve wild species 3. Doesnt improve the ecological stability of the lake

Question 32

What type of scenario might you stock Lake Trout vs. Brown Trout

Answer 32

a lake with wild lake trout, the brown trout may outcompete the native species for habitat, food, cover, and spawning grounds

Question 33

T/F stocked fish have consistent and reliable survival

Answer 33

False

Question 34

Why is genetics an important consideration in stocking?

Answer 34

Because the risk of hybridization, genetic diversity, genetic bottleneck

Question 35

T/F Aquaculture can be personal or commercial operations

Answer 35

True

Question 36

T/F Aquaculture can involve rearing fish in a lake, pond, dugout, or facility

Answer 36

True