Aquaculture 2022

February 28 - March 4, 2022

San Diego, California

ALTERNATE APPROACH TO Saccharina latissima FARMING: DIRECTLY SEEDING JUVENILE SPOROPHYTES AND GAMETOPHYTES

Michael Marty-Rivera*, Yaoguang Li, Crystal Ng, David Bailey, Scott Lindell, Charles Yarish

 

University of Connecticut, Stamford, CT 06901 USA

*Michael.marty-rivera@uconn.edu

 



 

The k elp farming  industry in the U.S. is highly dependent on wild population collections for a source of meiospores . H arvesting  reproductive plants  from the wild  can have a negative impact on these populations if not enough time  and care  is given for them to recuperate.  As  the kelp  industry grows this impact will  likely increase as well. Therefore, we are exploring alternate methodologies  where gametophytes are vegetatively cultured and held in cold storage to seasonally produce seedstring. J uvenile Saccharina latissima sporophytes  and gametophytes  can be applied by spraying  directly  onto  the seedstring or rope instead of the traditional meiospore settling techniques. This approach has  the potential to  reduce  pressure on wild populations , reduce nursery time ,  space  and cost requirements for hatcheries supporting kelp farming industries.  Preliminary results from experimental plots show that the direct seeding technique can produce large quantities of adult sporophytes after a growing season in the Gulf of Maine. Further investigation on application methods will be required to increase effectiveness of this technique and provide opportunities to work with strains that result from selective breeding programs of kelp.