Fish Biology Final

In water, total ammonia exists in two forms:
a) What are they?
b) Which is the toxic one?
c) What effect does pH have on the equilibrium between the two?
d) What effect do increasing ammonia concentrations have on growth of fish?
e) Ultimately, where does most ammonia in fish ponds come from?
Click the card to flip 👆
1 / 15
Terms in this set (15)
In pond water, nitrite concentrations may increase during fish culture: a) Where does it come from?
b) What is a major toxic effect of nitrite in fishes?
c) How is it usually treated or prevented in pond aquaculture?
d) As pH increases, the percent of total nitrite in the nitrous acid form increases or decreases (circle one)
List five effects of epinephrine1. Increase systolic blood pressure 2. increase heart rate 3. increase in glycogenolysis 4. increase in blood glucose levels 5. increased fatty acid metabolismList five effects of corticosteroids1. Helps animals deal with stressors 2. Modulates glucose availability 3. Modulates inflammation 4. Modulates immune system (autoimmunity) 5. Helps euryhaline fish adjust to changing salinityGiven the following: CO2 + H2O H2CO3 H+ + HCO3 a) What enzyme catalyzes this reaction? b) Where in the blood does this reaction predominantly occur? c) If carbon dioxide is added to the blood, which direction will the reaction proceed (left or right)?a) Carbonic Anahydrase b) red blood cells c) rightDistinguish between glycogenolysis and gluconeogenesisGlycogenolysis is the breakdown of glycogen occurring in the liver when blood glucose levels drop; gluconeogenesis is the synthesis of glucose from non-carbohydrate sources and occurs in liver and kidneys.Stimulation from the sympathetic nervous system will do what to the following (circle one for each)? Digestive system inhibit or stimulate Heart rate increase or decrease Blood vessels dilate or constrict Blood pressure increase or decrease Lung passages dilate or constrict