- •Р.А. Юсупова
- •От автора
- •Unit 1 aquaculture Active vocabulary
- •1 Aquaculture
- •1.1 Read the following international words and translate them. (Mind the part of speech).
- •1.2 Give Russian equivalents of the following words and word combinations.
- •1.3 Read and translate the text with the help of a dictionary.
- •1.4 Answer the questions
- •1.6 Translate the given Russian words into the English ones:
- •1.7 Match the words with their definitions.
- •1.8 Read the text without a dictionary. Aquaculture’s beginnings
- •2 Ancient and modern aquaculture
- •2.1 Read the following international words and translate them. (Mind the part of speech).
- •2.2 Give Russian equivalents of the following words and word combinations.
- •2.3 Read and translate the text with the help of a dictionary.
- •2.4 Give English equivalents:
- •Vocabulary
- •4.5 Give English equivalents:
- •4.6 Translate the given Russian words into the English ones:
- •4.7 Match the words with their definitions.
- •4.8 Topics for discussion
- •Feeding the world through agriculture
- •5 Control over reared species
- •5.1 Read the following international words and translate them. (Mind the part of speech).
- •5.2 Give Russian equivalents of the following words and word combinations.
- •5.3 Read and translate the text with the help of a dictionary.
- •5.4 Give English equivalents:
- •5.9 Answer the questions
- •Unit 2 fish culture Active vocabulary
- •6 The big two in fish culture
- •Choose the equivalents:
- •Aquaculture species in the united states
- •1 Rainbow, brown
- •7.4 Give English equivalents:
- •4Bullhead
- •7.13 Render the following verbs with ing-forms into infinitives and translate them:
- •8 Culture systems
- •8.1 Read the following international words and translate them.
- •8.2 Give Russian equivalents of the following words and word combinations.
- •8.3 Read and translate the text with the help of a dictionary.
- •8.4 Give English equivalents:
- •8.5 Match the words with their definitions.
- •8.6 Fill in the gaps using the words given below:
- •8.7 Answer the questions
- •8.8 Read the text without a dictionary. Types of aquaculture opeations
- •Vocabulary
- •8.9 Match the words with their definitions.
- •8.10 Answer the questions
- •Vocabulary
- •Vocabulary
- •10.5 Translate the given Russian words into the English ones:
- •Vocabulary
- •Vocabulary
- •Vocabulary
- •Vocabulary
- •12.5 Answer the questions
- •13 Potential adverse effects
- •13.1 Read and translate the text with the help of a dictionary.
- •Vocabulary
- •13.2 Answer the questions
- •14 Carp Aquaculture
- •Carp as ornamental fish
- •15 Tilapia Fish farming
- •Nutrition
- •Exotic species
- •Uses other than supplying food
- •In aquaria
- •16 Trout Anatomy
- •Habitat
- •As food
- •River fishing
- •17 Salmon Life cycle
- •Species
- •Atlantic Ocean species
- •Pacific Ocean species
- •Salmon fisheries
- •Salmon aquaculture
- •18 Shrimp Farming
- •Marketing
- •Life cycle
- •19 Grass carp
- •Ecology
- •Invasive species
- •Use as weed control
- •Fishing for grass carp
- •Triploid Grass Carp
- •20 Channel catfish
- •21 Pond
- •Technical definitions
- •Formation
- •Characteristics
- •22 Cage
- •Site Criteria
- •Pond Problems
- •Water Quality
- •Temperature
- •Turbidity
- •23 Raceway
- •Site selection
- •Water flow
- •Maximum load
- •Waste water
- •Appendix
- •Proverbs
- •Библиографический список
Vocabulary
adhesive |
клейкий |
fry |
малек |
redds |
гнездо лососевых |
gravel bottom |
дно из гравия |
to replicate |
повторять, копировать |
to induce |
вызывать |
11.9 Translate the given Russian words into the English ones:
1) Many aquatic species broadcast their (икра) and sperm into water.
2) This type of reproductive scenario is typical of (креветки), (крабы), (лобстеры), (устрицы) and certain types of fishes.
3) (Форель) and (лосось) lay their eggs in shallow nests.
4) Hormone (уколы) can be used to induce (нерест).
5) (Болезни) and parasite organisms are almost always present in the culture (окружающая среда).
6) Some treatment chemicals are (эффективный) when added to (вода).
11.10 Answer the questions
How do different species lay their eggs?
What are hormone injections used for?
What conditions are necessary for fertilized eggs?
12 DISEASES AND PARASITES
12.1 Read the following international words and translate them. (Mind the part of speech).
Organisms, epidemic, problem, result, stress, period, aquaculture, episode, culture, analogy, students, individuals, role, chemicals, effective, control. Toxic, doses, system.
12.2 Give Russian equivalents of the following words and word combinations.
A number of diseases, disease and parasite outbreak, overfeeding, sustained underfeeding, culture environment, disease signs, a lack of resistance, immune status, to play a role, flu symptoms, direct human consumption.
12.3 Read the following terms.
Parasite, virus, bacteria, protozoans, helmints, epizootics, infestation, flu, immune, symptoms, antibiotics.
12.4 Read and translate the text with the help of a dictionary.
Like other organisms, aquaculture species are susceptible to a number of diseases and parasites such as viruses, bacteria, parasitic protozoans, helmints (worms), copepods and others. When a disease or parasite outbreak occurs in a population of aquatic organisms, it is known not as an epidemic (a term used for the same problem in human populations) but as an epizootic. In most instances, epizootics only result after a population has been stressed.
Stress can occur in a number of ways. If water quality deteriorates, even for a short period, the animals exposed to that water will undergo stress. Handling is another cause of stress in aquaculture species, as are overfeeding or sustained underfeeding. Following exposure to a stressful situation, an epizootic may occur within as little as 24 hours or as long as 2 weeks. The period between the stress episode and the onset of disease or parasite infections depends on the time involved in building the numbers of disease and parasitic organisms to a high level that signs of the disease are observable. Disease and parasite organisms are almost always present in the culture environment, but at very low levels. They only produce disease signs when they are promoted by a lack of resistance in the aquaculture species. An analogy can be drawn in humans. Students in a classroom may be exposed to people with the flu, but not everyone is infected. The immune status of the various individuals play an important role in who will ultimately show flu symptoms. Students who are stressed (for example, by getting too little sleep) are often much more susceptible than those who are not.
The number of chemicals that can be used to treat disease and parasite problems in aquatic animals is small. Only about 10 compounds have been approved for species that are being reared for direct human consumption. Among them few are effective at controlling bacteria, some work on a few parasites but not others, and may are themselves toxic if given in improper doses. Some treatment chemicals are effective when added to the water, but some must be ingested by the aquaculture organisms. Animals that are experiencing disease and parasites problems often refuse to eat, making treatment difficult.
Good overall management of the culture system is perhaps the best way to avoid disease and parasite problems. However, even the best managers experience epizootics on occasion. Treatment chemicals of various kinds should be available, and the culturist should know how to use those chemicals. Chemicals such as antibiotics should not be used routinely, but should be employed when there is a problem requiring treatment, or when there is a very strong probability that a disease and parasite epizootic is imminent.