Английский язык: Сборник текстов и упражнений для студентов специальностей "Промышленное рыболовство". Дьякова Н.П. - 45 стр.

and, in the case of marine species, salinity. Each of these and other water quality va-
riables may or may not be controlled, depending on the nature of the culture system.
3. Control over reproduction. Unless the culture species can be reproduced in captiv-
ity, there is no way to undertake genetic selection and the improvement of the species
with respect to its suitability for culture. Successful aquaculture of any species ulti-
mately depends on captive breeding and producing brookstock from animals that are
hatched in captivity.
4. Provision of nutritionally complete feeds.
Species being reared by aquaculturists are usually fed prepared feeds, similar to the
feeds used by livestock producers. Such feeds contain the nutrients necessary to meet
the daily requirements of the species under culture. In some instances, natural foods
are relied up (e.g., oyster and mussel culture), but for most species, manufactured di-
ets are employed.
5. Control of diseases. Aquatic organisms, like other plants and animals, are suscept-
ible to diseases of various kinds. The aquaculturist must be able to recognize the dis-
eases that affect the particular species being cultured and know how to treat them
properly.
                                       Vocabulary

 to rear                               выращивать, выводить, культивировать
 concept                               понятие, идея
 tomb                                  могила
 pictograph                            пиктография
 pharoah                               фараон
 to conduct                            зд. приложить, прикладывать
 minnows                               мелкие галаксиевые рыбы
 bait                                  приманка, наживка
 gold fish                             серебряный карась, гарибальди
 to hatch                              выводить искусственно
 hatchery/hatcher                      инкубатор
 release                               выпуск на волю
 to enhance                            увеличивать
 to endanger                           подвергать опасности
 to threaten                           грозить, угрожать
 seaweed                               морская водоросль
 to involve                            включать, вовлекать
household                              известный
legitimate                             законный
to exert                               осуществлять, применять
maintenance                            эксплуатация, сохранение, поддержка
                                       содержание
cage                                   садок, клетка, изолятор
pond                                   пруд

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