Fish Metabolism and Digestive System Quiz

Lipids

• Triglycerides, sterols, fatty acids, and phospholipids are all types of lipids.
• Triglycerides are composed of glycerol and three fatty acids.

Vitamins and Minerals

• Vitamins are organic molecules that act as cofactors or substrates in some metabolic reactions.
• Vitamins are classified as either fat-soluble or water-soluble.
• Lipids, proteins, and minerals are also important nutrients.

Digestive System

• Insulin is important in fish for carbohydrate metabolism.
• The pancreas plays a crucial role in fat digestion.
• The ratio of the length of the digestive tract to body length of fish is known as the relative gut length.

Fatty Acids

• Marine fish oils are dietary sources of essential fatty acids (EFA) of the n-3 series.
• Freshwater fish from cold water have an essential requirement for fatty acids of the n-3 series.

Carbohydrates

• Carbohydrates are a cheap source of energy in aquaculture diets.
• Carbohydrates also function as a binding agent and enhance palatability of feeds.

Vitamins

• Fat-soluble vitamins include vitamins A, D, E, and K.
• Tocopherol is a fat-soluble vitamin.

Energy

• One calorie is equal to 4.184 joules.

Fish Feed

• Wet feeds include whole trash fish, chopped trash fish, and fish silages.
• Milkfish is one of the leading commercial producers of milkfish in the world.

Fisheries Education

• Dr. Deogracias V. Villadolid is known as the father of tilapia sex reversal in the Philippines.
• The University of the Philippines in the Visayas was the first to initiate fisheries education.

Fisheries History

• The Bureau of Fisheries and Aquatic Resources (BFAR) was established in 1901.
• Tilapia is one of the oldest fish culture practices in the Philippines.

Fish Farming

• Cost of fish production can be improved by improvement of FCR, efficient feed formulation, and proper feeding.
• Sustainable fish farming practices include maintaining water quality, controlling disease, and optimizing feed.

Water Quality

• The suitable range of water pH for fish growth is 6.0-9.0.
• Growth potential of a fish can be exceeded with proper maintenance of growth-related factors.

Parasites

• Lernaea is a type of parasitic crustacean that infects fish.

Fish Biology

• Protogyny is a phenomenon where female species turn into males, commonly seen in the Serranidae family.
• Ice-ice disease is a health condition of seaweed caused by low salinity, temperature, and light intensity.

Fish Pond Design

• Perimeter dike design should be based on sound engineering principles and economic feasibility.
• There are two types of perimeter dike design: for exposed area and for protected area.

Water Management

• Tertiary canals are built primarily for the purpose of protecting the farm from being flooded with runoff water.
• Diversion canals are built to facilitate flow-through systems in intensive farming.

Tides

• Spring tide refers to the highest high waters and lowest low waters.
• Neap tide refers to the average high waters and average low waters.
• Ebb tide refers to the outgoing or falling tide.
• Flood tide refers to the incoming or rising tide.

Tide Measurement

• Tidal range refers to the difference between the highest high water and the lowest low water.
• Tidal period refers to the time interval between two successive high waters or low waters.

Coastal Management

• The sanctioned buffer zone is the area provided for ecological consideration and physical protection against flooding and wave action.