Английский язык: Сборник текстов и упражнений. Дьякова Н.П. - 62 стр.

cultured group of fishes in the world today are the tilapias. Tilapias are native to
the Middle East and north Africa, but have been introduced throughout the tropi-
cal world and into many subtropical areas. Most species die when water tempera-
tures fall below 10°C. Therefore, culture in temperature climates depends on pro-
duction of a crop during the warm months and maintenance of brookstock in
warm water (often in indoor heated holding facilities) during winter. Various spe-
cies of tilapia are under culture around the world today, primarily in the tropics.
All off the popular ones are known for their rapid growth, ease of production and
heartiness. Tilapias are extremely tolerant of poor water quality, reproduce readily
in almost any environment and reach market size within several months. Most
species feed on a combination of plants and animals, and they do not require high
cost prepared feeds unless they are being reared at high densities where natural
food supplies become exhausted. Tilapias are popular in subsistence culture in
much of Africa, the Far East and Latin America. Commercial production is highly
developed in Israel, Indonesia, the Philippines, Thailand, Taiwan, Jamaica and
various other nations.

                                    Vocabulary

   common carp                               культивируемый карп
   big head carp                             большеголовый карп
   silver carp                               толстолобик
   grass carp                                белый амур
   to fertilize                              удобрять
   waste                                     отходы
   to feed on                                питаться
   benthos                                   бентос
   vegetation                                растительность
   pellet                                    гранула
   density                                   плотность
   ration                                    рацион
   to spawn                                  нереститься
   milt                                      семенники
   strip                                     выдавливать икру или молоки
   nursery pond                              садок для молоди рыб
   to tolerate                               выносить, переносить
   tolerant                                  выносливый
   tilapia                                   тиляпия
   temperate                                 умеренный
   brood                                     потомство, выводок, помет
   heartiness                                крепость, здоровье
   readily                                   легко, охотно
   to require                                требовать
   to exhaust                                истощать
   food supplies                             запасы пищи
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