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Aquaculture > Miderm 4-6 > Flashcards

Miderm 4-6 Flashcards

1
Q

Define migration

A

A fish or group of fish moving to fufill some purpose or respond to environmental stimuli

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2
Q

Predictable

A

Uniformly
Temperature
Time of day

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3
Q

Unpredictable

A

Not uniform
Predators
Human disturbances

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4
Q

Social interaction

A

Spawning

Finding food

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5
Q

Anadromous

A

From salt to fresh

Salmon

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6
Q

Catadromous

A

From fresh to salt

Eel

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7
Q

Example of a fish

A

Striped bass
Move location based on temp
Cycle ensuring for no abundance of fish
Impacting and adapting to multiple habitats

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8
Q

Effects/importance

A

Habitats constantly are changing

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9
Q

Aeromonas

A

All species of fish are susceptible, can be passed on to other vertebrate species
Treated w/ antibiotics

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10
Q

Enteric septicemia (ESC)

A

30% of all catfish disease cases, most important disease in catfish industry
Antibiotics

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11
Q

Channel catfish virus (CCV)

A

Effects catfish fingerlings

No treatment

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12
Q

Columnaris

A

Second leading cause of mortality in catfish industry, bacteria appear in stacks
Antiniotics

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13
Q

Proliferative gill disease

A

Hamburger gill, gill filaments rupture

No treatment

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14
Q

Saprolegniasis (winter fungus)

A

Occurs when water temp drops below 59° F, brown fungal growth, reduces immunity and mucus production
Antibiotics

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15
Q

Grubs/trematodes

A

Usually does not result in mortality, ruins marketable meat, can live on skin, gills or muscle
No treatment

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16
Q

Ich

A

White spot disease, looks like fish sprinkled with salt

Uv sterilization

17
Q

Brown blood disease (BBD)

A

Caused by high nitrite in water, changes hemoglobin in blood to methemoglobin, loses oxygen carrying ability, fish gasping common
Chlorides

18
Q

Whirling disease

A

effects mainly salmonids, especially less than 6 months old, attacks cartilage in fishes causing deformities in spine jaw and head, fish chase their tails
No treatment only prevention

19
Q

Marine ich

A

White spots appearing on marine fish, various life cycle stages
Uv sterilization

20
Q

Vibrio infections

A

Mainly occurs in marine and estuarine environments, commonly cause illness in humans from contaminated shellfish
Antibiotics

21
Q

Furunculosis

A

Effects large amounts of trout hatcheries in North America, genus of aeromonas bacteria, not typically seen in young fish
Antibiotics

22
Q

Safe thickness for ice fishing

A

4in walking
8in atv
12in vehicle

23
Q

Water homoginization

A

Water temp is all the same at 39.2°F

24
Q

Thermoregulation

A

Fish metabolism slows they eat less and change location to get desired temp for body

25
Q

Thermal breadth

A

Temp range a fish is comfortable in

Aquaculture (2 decks)

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