4 oys t er c u lt u r e a home of the us oyster fa r

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Unformatted text preview: ox 66000 fr y per ha . 4 ) Oys t er C u lt u r e a ) Home of the US Oyster fa r ming industr y is the Pa c ific nor thwest - Wa shington, Or egon, Ala ska a nd pa r ts of Ca lifor nia 1) Spec ies - Cr a ssostr ea Giga s (Ja pa nese Oyster ) is tha t spec ies most c ommonly c ultur ed in the west (str onger ta sting tha n ea ster n US spec ies; Ea st US Cr a ssostr ea Vir ginic a - typic a l oyster ser ved on a ha lf shell (sweet ta sting a nd wor th mor e $$) b) Ea r ly Oyster Life Sta ges 1 - fer tiliz ed egg - z ygote 2 - la r va 3 - veliger la r va a nima lsc ie nc e 2.uc da vis.e du/a ns1/ha ndouts/a qua c ultur e .html 2/3 10/30/13 Aqua c ultur e 4 - pediveliger la r va - ha s developed eye spot; a ' foot' (pedi); veliger r efer s to the ha ir - like str uc tur es used to fa n food (a lga e) into the mouth of the la r va 5 - spa t - meta mor phosed la r va into the sessile or ga nism whic h bec omes the a dult oyster ; it is a t the spa t sta ge tha t the oyster a tta c hes to a piec e of shell (c ultc h) or ba y floor to begin gr owing c ) Sex Life of a n Oyster - mobile; oyster s c a n c ha nge sex a ny number of times dur ing their life (they a r e her ma phr odites - but unlike wor ms c a nnot fer tiliz e themselves); sex is not set, for the fir st time, until a bout 1 yr of a ge; a mong Cr a ssostr ea they c a n only c ha nge sex onc e 1) fir st yea r of life - most oyster s a r e ma les; sinc e the investment in ener gy to ma ke sper m is minima l c ompa...
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