Freshwater prawn farming

Fish farming

Algaculture

Types of aquaculture

Lesson 7

1. Read the words:

phytoplankton

microphytes

planktonic

recreational

requirements

sustainability

algae

2. Pronounce correctly:

[g] – global, algaculture, inorganic

[dз] – generally, large, juvenile

[s] – produce, recycle, principal

[k] – cultivation, catfish, scale, enclosure

[h] – high, whole, hatchery

3. Master the active vocabulary:

annual production - годовой объем производства

distinction – различение

age-old - вековой; старый

sustainable - устойчивый; жизнеспособный

juvenile - молодь

4. Put down the English for:

микроскопическое растение ____________________

растительный планктон ________________________

морская водоросль ____________________________

разведение ___________________________________

потребление __________________________________

форель _______________________________________

5. Read the examples.

Cover the left column and translate the examples back into English.

harvest protein diversification crayfish

урожай белок, протеин процесс изменения; модифицирование 1) речной рак 2) лангуст

6. Put down the Russian for:

a fish hatchery

on a large scale

giant river prawn

nutritional

shellfish farming

"Multi-Trophic"

inputs

China

7. Read the text and define the main idea of the text.

Algaculture is a form of aquaculture involving the farming of species of algae. The majority of algae that are intentionally cultivated fall into the category of micro algae, also referred to as phytoplankton, microphytes, or planktonic algae.

Macro algae, commonly know as seaweed, also have many commercial and industrial uses, but due to their size and the specific requirements of the environment in which they need to grow, they do not lend themselves as readily to cultivation on a large scale as micro algae and are most often harvested wild from the ocean.

Fish farming is the principal form of aquaculture, while other methods may fall under Mariculture. It involves raising fish commercially in tanks or enclosures, usually for food. A facility that releases juvenile fish into the wild for recreational fishing or to supplement a species' natural numbers is generally referred to as a fish hatchery. Fish species raised by fish farms include salmon, catfish, tilapia, cod, carp, trout and others.

Increasing demands on wild fisheries by commercial fishing operations have caused widespread over fishing. Fish farming offers an alternative solution to the increasing market demand for fish and fish protein.

A freshwater prawn farm is an aquaculture business designed to raise and produce freshwater prawn or shrimp for human consumption. Freshwater prawn farming shares many characteristics with and many of the same problems as, marine shrimp farming. Unique problems are introduced by the developmental life cycle of the main species (the giant river prawn, Macrobrachium rosenbergii).

The global annual production of freshwater prawns (excluding crayfish and crabs) in 2003 was about 280,000 tons, of which China produced some 180,000 tons, followed by India and Thailand with some 35,000 tons each. Additionally, China produced about 370,000 tons of Chinese river crab (Eriocheir sinensis).

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