6. Choose the equivalents:

High-cost prepared feeds, to spawn, to inject the hormones, poor water quality, adults, grass carp and silver carp, a high density,

взрослые особи_____________________________

вода плохого качества______________________________

нереститься________________________

белый амур и толстолобик________________________________

дорогой готовый корм_______________________________

вводить гормоны_______________________________

высокая плотность________________________________

6.7 Translate the given Russian words into the English ones:

1. Chinese use (пруды) which are fertilized with (органическое удобрение).

2. (Культивируемый карп) feed on benthos, (толстолобик) on phytoplankton, (большеголовый карп) on zooplankton and (белый амур) on rooted aquatic (растительность).

3. In Europe common carps are maintained at (высокая плотность).

4. Carps spawn naturally in (пруды), though (инкубаторы) are often maintained.

5. The young fish are often stocked into (садок для молоди рыб).

6.8 Answer the questions

1. What are two the most widely cultured groups of fishes?

2. What have you learnt about Chinese culture system?

3. Why are ponds fertilized?

4. What are native areas of tilapias?

5. What makes tilapias very popular around the world today?

6. Where is commercial production of tilapia developed in?

6.9 Match the words of column A and the words of column B

A	B
cultured	production
subtropical	size
water	stock
temperate	areas
brood	group of fish
warm	temperature
rapid	water
market	cost
high	food
natural	growth
commercial	climate

6.10 Match the words with their definitions.

1) water quality	a) The controlled production of fish in constructed facilities in captivity.
2) bottom culture	b) Organisms that inhabit, and complete their life cycle, in aquatic media.
3) fish farming	c) – the characteristics of water, such as water temperature and contamination, which define its ability to sustain life and its purity from chemicals.
4) aquatic organisms	d) The culture of species such as oysters and other mollusks on the seafloor.
5) hormone	e) Biologically active molecules functioning in all higher organisms, and regulating life processes.

21. Aquaculture species in the united states

Part 1

0. 7.1 Read the following international words and translate them. (Mind the part of speech).

1. Commercially, demonstration, situations, tests, ornamental, instruction, potential, region, producer, natural, populations, typically, material, sorts, stimulate, protein, plankton, acres, minimal, temperatures, hybrids, hybridized, season, factor, systems.

3. 7.2 Give Russian equivalents of the following words and word combinations.

Cold water fish, warm water fish, oxygenated water, leading producers, flow-through system, to reuse, natural populations, a minimal cash investment.

7.3 Read and translate the text with the help of a dictionary.

Many aquatic animals and plants are cultured commercially in the United States, while others have been grown for research or demonstration. No one species is appropriate for all situations. Species cultured successfully in one area may prove impractical or unprofitable in another.

Species Cultured

Finfish, shellfish, and aquatic plants are cultured commercially and recreationally for food, bait, stocking, research, bioassay tests, ornamental markets, and as instructional aides. The following species have culture potential for the northeastern United States.

A. Cultured Commercially