The number of eggs Salmon produce during spawning.
What is thousands?
100
The definition of Spawning and milt.
What is the act of obtaining eggs from female & sperm from the male. What is sperm.
100
Type of spawners catfish are.
What is cavity spawners?
200
Four basic types of aquaculture production systems
What are ponds, cages, continusous flow tanks and raceways, and recirculating systems?
200
Important water qualities
What is
Sufficient quantity
Free of chemicals or environmental pollutants
Water supply will not be affected by future development
200
The defintion of Anadromous.
What is the fish hatch in freshwater, move into the ocean to live and mature, and then return to freshwater to spawn?
200
What the reproductive cycles are controlled by, what controls the release of them, and three examples of them.
What is hormones, controlled by enviornmental stimuli, incuding climate change, day length, and temperature.
200
The way in which eggs are commercially taken from a Salmon.
What is an incision in the ripe fish.
300
Five factors to consider in choosing a production system
What is type of product, size of farm, water source available, land availabe, climate, purpose of facility?
300
Water sources from best to worst. There are six of them.
What is
Springs
Wells
Rivers, streams or lakes
Surface run-off
Groundwater
Municipal
300
Gravel nest where the female Salmon lay their eggs.
What is a Redd?
300
The characteristic that makes Tilapia a unique fish when it comes to spawning.
What is Tilapia are mouthbrooders.
300
Three types of incubators used in trout incubation.
What is
"California" Trays
Vertical or "Heath" incubators
Upwelling incubators
400
The components of reciruculating systems
What are culture chamber, primary settling chamber, biological filter, and final clarifier or secondary settling chamber?
400
Three various substances that water sampling kits can test for.
What are
Dissolved oxygen
Carbon dioxide
Nitrate
Nitrate ammonia
Hardness
Alkalinity
400
The age range at which Salmon mature and how many times a Salmon spawns in their life.
What is 2-7 years and once a time in their lifetime.
400
Four methods used in spawning channel catfish in ponds.
What is
Spawning & rearing ponds
Fry transfer, open pond
Egg transfer method
Pen spawning
400
The defintion of photoperiod
What is light period?
500
The difference between "extensive" and "intensive" production
What is extensive production has few additional inputs or none at all and intensive production is if labor, feed, and materials or equipment are required?
500
Two reasons why water quality must be continually monitored.
What is
Fish will die if dissolved oxygen is too low.
Excess wate buildup damages gills and leads to diseases.
500
Draw the life cycle of salmon.
What is
Spawning-->Alevin-->Fry-->Smolt-->Maturing-->Mature Adult
500
The three methods of controling reproduction. Give an example of each method.
What is
Genetic-->Early or late maturing broodstocks can be developed
Enviornmental-->controlled light period, manipulate spawning time
Hormonal-->induce spawning by a hormone injection, fish must be close to spawning to have any effect
500
Three problems with recirculating systems.
What is
getting rid of toxic fish wate
intensive water quality monitoring needed
need backup systems for flushing water
fish may develop unpleasant flavor