Sunday, April 3, 2016

Kumamoto Oysters - Crassostrea sikamea


Scientific Name:
Crassostrea sikamea

Common Name:  
Kumamoto Oyster

Native Range:  
Yatsushiro Bay, Kumamoto Prefecture, Kyushu Japan

Established Range: 
C. sikameas, although originally from Japan are little known currently to their native region. Today they are primarily cultivated in Puget Sound’s Oakland Bay (WA), Humboldt Bay (CA), and Bahia Falsa in Baja California, Mexico.



Kumamoto Oyster Production in Mexico:
Bahia Falsa, protected bay inside greater San Quintin Bay in Baja California. Ideal location to grow oysters due to pristine water conditions with no contaminated discharges of any type into a bay blessed with strong currents to ensure good plankton and oxygenation levels for the oysters to grow.


Habitat:
C. sikameas prefers to live on hard surfaces in sheltered waters within the intertidal zone. This fairly hardy shellfish can survive in salinities between 18 and 30 parts per thousand, and temperatures of 5 to 35° C. In aquaculture they grow well in a variety of techniques with adequate current flow to meet feed and oxygenation requirements of the oysters.

Diet:
C. sikameas is a filter feeder that eats plankton and detritus.

Average Life Span:
Unharvested C. sikameas can live up to 30 years.

Breeding:
C. sikameas is hermaphroditic and reproduces sexually via broadcast spawning. 



Concerns:
Kumamotos were thought to be in danger of extinction, having nearly disappeared from their native region in Japan. Today however, very hardy, disease-resistant populations are being successfully cultivated in Bahia Falsa, Baja California Mexico and other protected bays along the NE Pacific coastline where they are free from pollution and heavy marine traffic.


Pacific Commercial Market Source:
Ostiones Guerrero, SA de CV 
Bahia Falsa, San Quintin

Ensenada, Baja California
Mexico   22930

www.ostionesguerrero.com


Seeding Oyster Racks in Bahia Falsa, San Quintin, BC Mexico
Photo Credit: Edgar Lima