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UCD / Animal Science / ANSC 042 / What is grown in aquaculture?

What is grown in aquaculture?

What is grown in aquaculture?

Description

School: University of California - Davis
Department: Animal Science
Course: Introductory Companion Animal Biology
Professor: Anita oberbaur
Term: Winter 2016
Tags: Animal Science, ornamental, Fish, and Industry
Cost: 25
Name: ANS 042, Week 3, Lecture 7
Description: A guest speaker came in and lectured about the ornamental fish industry.
Uploaded: 01/25/2018
3 Pages 94 Views 2 Unlocks
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ANS 042 


What is grown in aquaculture?



Week 3 

1/24/18 

Lecture 7: The Ornamental Fish Industry (Guest Speaker) 

➔ Introduction: fish as pets 

◆ Fish come right after cats and dogs in households 

◆ They are number one in terms of how many fish as pets 

◆ Over 1500 types of fish species 

◆ Global aquarium industry value is $ 

➔ Aquaculture: farming of aquatic organisms 

◆ This impacts the fish industry by farming fish for food instead of for aquaria ➔ Origins 

◆ For both food and aesthetics 

● The Yangtze River in China 6,000­8,000 years ago was the beginning of  the domestication of rice


What symbolizes wealth and prosperity?



● As they moved into patty rice culture they got deeper into the water, and  fish were available

◆ Advantages of rice/fish culture 

● 10­20% increase in rice yields 

● Significant increase in fish 

● Rice farming villages were more likely to come across fish than villages  that did not farm rice

○ These fish could be harvested 

◆ Formation of greenhouse grasses started to increase 

◆ “Rice theory” 

● North ­ more aggressive and independent (wheat farmers) 

● South ­ more cooperative and interdependent (patty rice farmers) 

➔ Carps (Goldfish & Koi) 


Is wet rice grown on uneven land?



◆ Symbolism 

● Wealth, luck, happiness, good fortune, and prosperity 

● In japan, carp windsocks are flown on Children’s Day as the parents wish  the children good luck

● In china, carp represents carp and perseverance We also discuss several other topics like How much protein does a proteome have?

◆ Common carp and Prussian carp were in the rice field 

● Mutations in the gene that give them their silver/gray color is mutated to  give them the gold color

◆ Goldfish culture 

● Tang dynasty 

○ Genetic mutation in the Prussian carp resulted in a gold color 

instead of silver ­ these fish were considered sacred

○ Ponds of mercy ­ ponds with goldfish 

● Domestication 

○ Song dynasty ­ single species ponds

○ Carassius auratus (goldfish) and C. gibelio (Prussian) 

● Selection of new forms 

○ Ming dynasty ­ golden age of Chinese ceramic goldfish containers ● Spread of goldfish culture 

○ Characteristics 

◆ Freshwater 

◆ Coldwater 

◆ Omnivorous 

◆ Non­aggressive 

◆ Hardy; change 25% of the water every 1 or 2 weeks 

○ Highly regarded in Europe, thought to bring good fortune to a 

household

● Goldfish varieties today 

◆ Koi ­ Japanese “goldfish” 

● Cyprinus carpio (common carp) domesticated in Japan as an ornamental  pond species We also discuss several other topics like What are the primary factors that allowed the increase in per animal productivity in the us beef industry?

● “Brocaded carp”  

○ Rice farmers began to select and breed common carp for 

distinctive color patterns in the 1820’s

➔ Aquariums 

◆ Developments of the modern home aquaria 

● Understanding of the biological function of Don't forget about the age old question of What are the primary institutions of socialization?

● Importance of biological filtration in an aquarium to convert ammonia  ● Aquatic plants remove nitrogen, enhance fish habitat, and enhance  aesthetic value

◆ Community tanks 

● Pretty collection of fish that are from different areas of the world 

◆ Biotopes: biologically accurate displays Don't forget about the age old question of State the goals of psychology.

➔ Summary 

◆ High value fish are egg layers including exotic fish, discus, and arowana ◆ Most expensive aquarium fish 

● Platinum Asian arowana ­ rare mutation 

◆ Most imported and exported marine fish were collected from coral reefs in the  wild

◆ Top saltwater ornamental fish exporters are Philippines and Indonesia ➔ Collection of fish from coral reefs 

◆ Issues 

● Degradation of reefs due to physical damage by collectors and gear ○ Dynamite being used to stun the fish If you want to learn more check out When did charles darwin bear?

○ Cyanide used to get fish that are hiding in crevices 

● Degradation from cyanide and other poisons 

● Loss of biodiversity and changes in reef ecology 

➔ Aquaculture of marine ornamentals 

◆ The clownfish became extremely popular after Finding Nemo 

◆ 30 fish species are commercially feasible 

➔ Advantages of tank raised fish

◆ Accustomed to people 

◆ Already acclimated to aquarium life 

◆ Offspring are easier to rear 

◆ Always young fish 

◆ Exposed to less shipping stress than wild fish 

➔ Modern home marine aquarium 

◆ Reef tank 

● Live rock: Coral or synthetic base harboring a variety of corals, algae,  sponges and other invertebrates 

● Hosts aerobic and anaerobic species If you want to learn more check out What are the benefits of globalization?

◆ Nano reef tank 

● A 15 gallon tank that is very decorative 

● A lot smaller than the normal reef tank 

◆ Aquascaping 

● A sublime look at nature 

● Looking at the aesthetics of the tank 

● “Nature” style aquariums 

● Huge waste of time because the plants inside continuously grow, so you  need to trim them

➔ Genetically engineered  

◆ Glo­fish, a zebra fish, (Danio rerio) contains genes from a sea coral that makes  the fish bright fluorescent colors

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