Tetraploid Pacific Oysters for "All-Triploid" Production

Award Information
Agency: Department of Agriculture
Branch: N/A
Contract: N/A
Agency Tracking Number: 34443
Amount: $230,000.00
Phase: Phase II
Program: SBIR
Awards Year: 1997
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Whiskey Creek Oyster Farm
2905 Bayshore Road, Tillamook, OR, 97141
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Mr. Lee W. Hanson
 Principal Investigator
 () -
Business Contact
Phone: () -
Research Institution
In the last decade, triploid Pacific oysters (Crassostrea gigas) have become an important component of the oyster culture industry in the Pacific Northwest. Because of their reduced gonadal development, triploid oysters provide a high quality product which can be marketed year-round. Currently, triploid Pacific oysters are induced primarily by inhibiting the second polar body with cytochalasin B. There are major limitations to the use of CB, but these limitations would be eliminated if triploid oysters could be produced by crossing diploids and tetraploids. After more than a decade of attempts to produce tetraploid oysters, success was finally achieved in 1993. This novel technique, in retrospect, is quite simple and success depends on a number of variables, almost none of them explored in any systematic way. For commercial production of triploids using tetraploids as brood stock, the rate limiting process is obtaining the tetraploids in the first place, but we do not know whether the tetraploid induction technique, developed in the lab, is transferable to a commercial hatchery. The proposed project is designed to test the repeatability of the tetraploid induction process in a commercial setting, and to explore variables in the induction process that might improve yields of tetraploids.

* information listed above is at the time of submission.

Agency Micro-sites

US Flag An Official Website of the United States Government