STATUS OF SHELLFISH AQUACULTURE
IN SOUTHEASTERN MASSACHUSETTS
Richard A. Kraus
Aquacultual Research Corporation
Dennis, Massachusetts 02638
Although eastern oysters,
to a degree, are cultured in southeastern Massachusetts, the overwhelming
energy devoted to marine aquaculture in Massachusetts and elsewhere
on the East Coast is to the culture of northern quahogs, also called
littlenecks or hard clams.
BACKGROUND
Two quotes from the eminent
treatise on the Massachusetts quahog industry, written in 1910 by Dr.
David Belding, a biologist with the Massachusetts Department of Fisheries
and Game, lend some perspective to the present discussion:
To the popular
demand for the LittleNeck, can be attributed the rapid development
of the quahog industry during the last ten years. This development
has furnished employment for hundreds of men, and has given the quahog
an important value as a seafood. What it will lead to is easily
seen. The maximum production was passed a few years ago, constant
overfishing caused by excessive demand is destroying the natural
supply, and there will, in a few years, be practically no commercial
fishery, unless measures are undertaken to increase the natural supply. Quahog
farming offers the best solution at the present time, and gives the
promise of permanent success.
In the warm waters of coastal
States in the south, where the quahog develops more rapidly, there are large
areas which as yet have not suffered from the effects of overfishing, as
has been the case with the northern beds in New England and New York, but
it will be only a short time before the history of ruthless spoilation will
be repeated, as already quahogs from the south are being shipped to the New
England markets.
Although total destruction of the northern quahog industry was given
respite by a couple of world wars, a depression, and the eventual implementation
of more stringent management regulations, Dr. Belding showed remarkable
foresight. However, his anticipation and expectation regarding
quahog farming were far in advance of the technology required to produce
the quahog
seed needed to farm quahogs.
The basic technology underlying controlled
culture of marine shellfish was finally worked out at NMFS’s Milford (Connecticut)
Laboratory during the mid-1950s. From this work at Milford, the Aquacultural
Research Corporation (ARC) and other companies along the East Coast were formed
in an attempt to put this technology to commercial use. Although many companies
succeeded in culturing the quahog, ARC was the first to achieve real commercial
success. During the late 1970s and early 1980s, ARC achieved the levels
of reliability and quantity needed for widespread quahog aquaculture.
PRESENT STATUS OF THE INDUSTRY
Since its commercial beginnings
during the early 1980s, farming of quahogs on Cape Cod and in southeastern
Massachusetts has developed from experimental plants into businesses that now
form most or all of the incomes for more than 80 individuals and families. In
the space of 8 yr, harvests of cultured littlenecks have increased from less
then one million in 1986 to more than an estimated 14 million for 1994. The
present quahog aquacultural industry is centered in Wellfleet where it began. Lesser
segments of industry are in the Towns of Provincetown, Orleans, Yarmouth, Barnstable,
Mashpee, Bourne, and Wareham. Other ventures still in the startup phase
are beginning or planned for Martha’s Vineyard, Brewster, Harwich, Westport,
and possibly Chatham. In general, most of the industry continues to take
place on intertidal flats on the north side of the cape, but increasingly,
work is being done to utilize shallow-water sites on the south side of the
cape.
Although increasingly successful,
local quahog aquaculture is not a mature industry. In many respects, it
is still a startup venture undergoing growing pains. One major problem
is the inadequacy of the planted stocks that survive the vagaries of nature. At
any particular site, it is often not enough to survive a few years in order to
make a success of a quahog aquacultural venture. Many natural cycles of
particularly severe weather occur infrequently and may not yet have been experienced,
and therefore may not have been adequately guarded against. Natural biological
cycles can result in sets of plants or animals that have the potential to smother
and kill small quahogs rapidly. Examples are massive sets of potentially
smothering macroalgae, such as codium, or large sets of animals, such as mussels,
setting on protective netting. Many more subtle problems may not be recognized
by a grower until the crop has been damaged. One of the hardest lessons
for most aquaculturists to appreciate is that they must not lose a significant
portion of a crop. Owing to the lengthy startup time needed to develop
a harvestable crop, and the large initial investment in seed, gear, and labor,
significant losses of stock can often be financially fatal to the typically undercapitalized
aquaculturist.
When dealing with town regulating
authorities, there may be conflicts with local shellfishermen, recreational groups,
or environmental groups. Even though the industry is nearly 10-yr old and
has proven to be totally beneficial and positive, we shellfish leaseholders,
in general, and not just ARC, often encounter friction with other users of nearshore
areas. I would like to address these problems, in particular, as they are
the management issues that will most affect future growth of the industry in
Massachusetts.
The industry involves the use of public “lease
areas,” a practice new to most towns, excepting Wellfleet which has a tradition
of shellfish leases dating back hundreds of years. Often, local authorities
are at a loss as to how to deal with applications for shellfish culture lease
areas. They harbor many misconceptions in this regard. A general
misconception is that leaseholders and/or towns need to be protected from large
outside entities that somehow may take over the business from locals. This
will never happen. Given the nature of the business, especially the fact
that leased areas are often remote and totally unsecured, local control of leases
by persons knowledgeable with that particular area will always be necessary. There
is no evidence that leased areas will be overtaken by large corporations, either
here or elsewhere. On the contrary, help from outside sources often can
enable a new leaseholder to succeed by the use of joint efforts. Leasing
of suitable sea bottom should be viewed as a highly desirable business development
project within the towns.
Another misconception is that the
success of shellfish aquaculture will be detrimental to the wild shellfishery. This
has not proven true. If anything, local success of shellfish aquaculture
has resulted in better prices for the wild shellfishery product. It has
opened new markets, thereby increasing demand for both the cultured and the wild
product. In any event, culture of littlenecks is not just a local phenomenon. Culture
practices like those employed in Massachusetts are now widespread along the entire
East Coast. Given the nature of the shellfish business, local wild shellfishermen
are now in head-to-head competition with aquacultural products from New Jersey,
Virginia, North and South Carolina, and Florida, whether they know it or not. This
competition for markets will only increase in the future. The only way
to retain some control over the local market price is to increase local production.
There has been speculation that, somehow,
shellfish aquaculture might degrade the environment, either by physically harming
the sea bottom or somehow harming the biological diversity of local ecosystems. I
have as much experience as anyone in observing the long-term effects of shellfish
aquaculture. For many of the same reasons as anyone else who cares about
our environment and ecosystems, and because the natural environment gives me
my livelihood, I am more objective about it than one might suppose. If
we culturists should harm the overall balance of natural systems, we would tend
to put ourselves out of business, for we depend upon these systems to nurture
and grow our shellfish.
Shellfish aquaculture strictly benefits
the marine environment. Over time, one sees that culture activities actually
function in similar ways to those artificial oceanic reefs. The nets and
cages actually promote all manner of life in and around them by providing temporary
shelters for all kinds of juvenile marine plants and animals. All of our
marine waters once held much higher levels of shellfish before man began to harvest
them. Shellfish are filter feeders and remove both plankton and particulate
matter from the water column. In doing so, they remove nutrients such as
nitrogen and phosphorous from the marine system. No doubt, this benefits
the modern marine environment which must deal with elevated loadings of nutrients
as a result of man’s activities upon the land and waters.
TM
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