ANS ANS - 18 18 1 Traditional Aquaculture Traditional Aquaculture Prehistoric origins of both agriculture Prehistoric origins of both agriculture and aquaculture as crafts and aquaculture as crafts • • Oxbow lakes Oxbow lakes – – Neolithic hunter Neolithic hunter - - gatherers in the Nile gatherers in the Nile – – seasonal collection of catfish from oxbow seasonal collection of catfish from oxbow lakes lakes • • Egyptian bas Egyptian bas - - relief in one of the pharaoh tombs relief in one of the pharaoh tombs shows tilapia being removed from a pond shows tilapia being removed from a pond – – religious connotation? religious connotation?
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ANSANS -- 1818 11
Traditional AquacultureTraditional Aquaculture
Prehistoric origins of both agriculturePrehistoric origins of both agricultureand aquaculture as craftsand aquaculture as crafts
•• Oxbow lakesOxbow lakes–– Neolithic hunterNeolithic hunter--gatherers in the Nilegatherers in the Nile ––
seasonal collection of catfish from oxbowseasonal collection of catfish from oxbowlakeslakes
•• Egyptian basEgyptian bas--relief in one of the pharaoh tombsrelief in one of the pharaoh tombsshows tilapia being removed from a pondshows tilapia being removed from a pond ––religious connotation?religious connotation?
ANSANS -- 1818 22
Traditional Aquaculture
Prehistoric origins of both terracultue andaquaculture as crafts
• Neolithic hunter-gatherers in the Nile – seasonalcollection of catfish from oxbow lakes
• South America – Landscape fisheries in theBolivian Amazon http://www.http://www.sassas..upennupenn..eduedu/~/~cericksocerickso/applied2.html/applied2.html
click onclick on -- AN ARTIFICIAL LANDSCAPE SCALE FISHERY IN THE BOLIVIAN AMAZONAN ARTIFICIAL LANDSCAPE SCALE FISHERY IN THE BOLIVIAN AMAZON
• Egyptian bas-relief in one of the pharaoh’s tombs(2,500 B.C.) tilapia being removed from a pondreligious connotation?
• Hawaiian fish ponds
• Stew ponds in Europe
ANSANS -- 1818 33
Traditional Aquaculture (cont.)Traditional Aquaculture (cont.)
Prehistoric origins of bothPrehistoric origins of bothagriculture and aquaculture asagriculture and aquaculture ascraftscrafts
•• ChinaChina–– ““Oracle bonesOracle bones”” before invention ofbefore invention of
paper ~ 4000 years agopaper ~ 4000 years ago–– Fan Lee 475 B.C. first aquaculture textFan Lee 475 B.C. first aquaculture text–– China continuous its tradition ofChina continuous its tradition of
freshwater aquaculture to this dayfreshwater aquaculture to this day
ANSANS -- 1818 44
Aquatic Food ChainsAquatic Food Chains
Traditional Aquaculture
10 – 20 microns
0.5 – 5 mm
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Herbivorous Fish = Filter FeedersHerbivorous Fish = Filter Feederssilver carpsilver carp
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Omnivorous fishOmnivorous fish -- common carpcommon carp
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The HistoryThe Historyofof
AquacultureAquaculture
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Carp AquacultureCarp Aquaculture
Carp
30%
Other fish
19%Mollusk
22%
Crustaceans
6%
Seaweeds
23%Carp 61% of fish
(39% animalaquaculture)
TOTAL AQUACULTURE
Total fish = 49%
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KoiKoi •• KoiKoi (domestic carp) is the(domestic carp) is themost popular fish in Japanmost popular fish in Japanbecause of its gorgeous,because of its gorgeous,magnificent, and colorfulmagnificent, and colorfulstyle. In Japanese culture,style. In Japanese culture,thethe KoiKoi representsrepresentsstrength, courage andstrength, courage andsuccess in life.success in life.
•• On Children's Day in May,On Children's Day in May,Carp windsocks are flownCarp windsocks are flownfrom each home. This isfrom each home. This isthe parents wishingthe parents wishingsuccess for their children'ssuccess for their children'slives in the future.lives in the future.
ANSANS -- 1818 1010
KoiKoi
•• Grand ChampionGrand ChampionKohakuKohaku, 22nd &, 22nd &24th All Japan24th All JapanShow, presently inShow, presently inservice as aservice as a ““studstud””at Sakai Fish Farmsat Sakai Fish Farmsin Hiroshimain Hiroshima
ANSANS -- 1818 1111
Common carp =Common carp = Cyprinus carpioCyprinus carpio
•• Temperature optimum; 20Temperature optimum; 20 -- 3333ooC and willC and willsurvive down to 4survive down to 4ooCC
•• While carp will tolerate low oxygen levels,While carp will tolerate low oxygen levels,optimum growth is achieved is > 3optimum growth is achieved is > 3 ppmppmOO22. Algal crashes and resulting complete. Algal crashes and resulting completeoxygen depuration are a common cause ofoxygen depuration are a common cause ofcarp mortalities.carp mortalities.
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Carp reproductionCarp reproduction
•• Collection of eggsCollection of eggs
•• Natural spawningNatural spawning
•• DubischDubisch methodmethod -- small (120small (120 -- 300 m2)300 m2)shallow (30shallow (30 -- 60 cm deep) kept grass60 cm deep) kept grass--covered and dry when not used.covered and dry when not used.Temperature warms to 18Temperature warms to 18 -- 20oC; ponds20oC; pondsare flooded 25are flooded 25 -- 30 cm deep;30 cm deep; spawnersspawnersstocked, 2stocked, 2 -- 3 females and 43 females and 4 -- 5 males;5 males;spawning occurs within 1spawning occurs within 1 -- 2 days.2 days.
•• Dry striping ofDry striping of spawnersspawners --
ANSANS -- 1818 1313
Pineal glandDaylight/temp
Pituitary gland
Gonadotropinhormones
Ovary
1960’s
or
human chorionicgonadotrophin
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Spawning maturation in carpSpawning maturation in carp
•• HormoneHormone--treatmenttreatment
–– Original method, females sutured; 3.5Original method, females sutured; 3.5 -- 4.04.0mg dry pituitary/per kilogram of fish into themg dry pituitary/per kilogram of fish into themuscle on the back (2 X)muscle on the back (2 X)
–– Presently hormone injections are usedPresently hormone injections are used
•• 2222 -- 2424 ooCC the ripening process isthe ripening process iscomplete in 11complete in 11 -- 12 hours after the second12 hours after the secondtreatment.treatment.
ANSANS -- 1818 1515
FertilizationFertilization•• FertilizationFertilization -- ~ 1 part sperm:100 parts~ 1 part sperm:100 parts
eggseggs
•• Urea 0.3% plus sodium chloride 0.4% isUrea 0.3% plus sodium chloride 0.4% isused as a saline solution for multipleused as a saline solution for multiplewashes, 1 part solution:10 parts fertilizedwashes, 1 part solution:10 parts fertilizedeggs, over a period of 1.5 hours toeggs, over a period of 1.5 hours toremove the "stickiness" from eggs. A finalremove the "stickiness" from eggs. A finalrinse uses tannin to complete the "derinse uses tannin to complete the "de--sticking" process.sticking" process.
•• Larval rearingLarval rearing --Upwelling tanks (200Upwelling tanks (200l) 3l) 3 -- 4 days at 204 days at 20 --2424ooC; inflation of airC; inflation of airbladder andbladder andswimmingswimmingcommences.commences.
ANSANS -- 1818 1717
Fry rearing = small ponds ~ 0.1 haFry rearing = small ponds ~ 0.1 ha
Grass carp = grassGrass carp = grass ““juicejuice”” carpcarp•• Fry feed on planktonFry feed on plankton
change tochange tovegetation at ~ 6vegetation at ~ 6 ““
•• > 20> 20ooC grass carpC grass carpfeed continuouslyfeed continuouslyeating several timeseating several timestheir body weight intheir body weight inplant material daily.plant material daily.
•• Rapid growth; liveRapid growth; livefor as long as 10 yrs.for as long as 10 yrs.