A Report upon the Mollusk Fisheries of Massachusetts

by Massachusetts. Commissioners on Fisheries and Game; David Lawrence Belding

In this country the fisherman as a rule continues to fish in any locality until fishing in that locality has become unprofitable. He then moves his operations to new waters until these in turn are exhausted. He is apt to look upon each new body of water as inexhaustible, and rarely has occasion to ask himself whether it is possible to determine in advance the amount of fish that he may annually take from the water without soon depleting it.

In this way the shellfish beds have become exhausted through the indifference and lack of knowledge on the part of the fishing public. In colonial days the resources of the shellfisheries were apparently inexhaustible. The conviction that man could ever exhaust the resources of nature took firm hold of the Puritan mind, and even in the present generation many still cling to this illogical doctrine, although proof to the contrary can be seen on all sides. This idea has caused great harm to the shellfisheries, stimulating men to wreck certain localities by overfishing.

III. Pollution of Harbors and Estuaries and the Ill Effects upon Public Health through the Shellfisheries.—The unscientific disposal of sewage, sludge, garbage and factory waste may tend to rapidly fill up the harbor channels, as well as the areas where the currents are not so rapid.

Competent authorities scout the idea that Boston harbor is at present filling up to any considerable degree with sewage sludge, but the problem must be met in the not distant future. This sewage sludge upon entering salt or brackish water precipitates much more rapidly than in fresh water or upon land, and becomes relatively insoluble, hence the accumulation in harbors, e.g., Boston and New Bedford harbors and the estuaries of the Merrimac, Taunton and other rivers. This sludge, instead of undergoing the normal rapid oxidation and nitrification, as it does when exposed to the air on land, undergoes in the sea water a series of changes, mainly putrefactive, which results in the production of chemical substances which in solution may (1) drive away the fish which in incredible quantities formerly resorted to that place; (2) impair the vitality and even kill whatever fish spawn or fry may be present; (3) check the growth of or completely destroy the microscopic plants and animals which serve as food for the young fish and shellfish; (4) by developing areas of oily film floating upon the surface of the water, enormous numbers of the surface-swimming larvæ of clams, quahaugs, scallops, oysters, mussels and other marine animals may be destroyed annually. But most serious of all is the fact that all the edible mollusks, notably the clam, quahaug, oyster and mussel, act as living filters, whose function is to remove from the water the bacteria and other microscopic plants and animals. Most of these microscopic organisms serve as food for the mollusk; and in instances where the mollusk is eaten raw or imperfectly cooked, man is liable to infection, if the bacillus of typhoid fever or other disease chances to be present in the mollusk. Though the chance of such infection is remote, it is nevertheless actually operative. Many typhoid epidemics in this country and abroad have been found to be directly referable to shellfish from sewage-polluted waters. For these reasons approximately 1,500 acres in Boston harbor and 700 acres in New Bedford harbor have become unsuitable for the growth of shellfish; and the State Board of Health, after investigation, decided that clams, oysters and quahaugs found within these areas are likely to be the direct cause of a dangerous epidemic of typhoid. For this reason the taking of these shellfish for any purpose was very properly prohibited; but at the last session of the Legislature a bill was passed which permitted the taking of such shellfish for bait, upon securing permits from the Board of Health, and providing heavy penalties for both buying and selling. As a matter of fact, however, it is well-nigh impracticable to properly enforce this law, for the reason that it is possible only in very rare instances to keep any one lot of clams known to have been dug under these conditions under surveillance from the time of digging until they are placed upon the hook as bait. Complete prevention of the taking of such shellfish is the only method by which the public health can be properly safeguarded. Even though in our opinion the annual financial loss to the public from the destruction of this public fishery by the dumping of city sewage into the water is not less than $400,000, the public health is of greater consequence, and should not be jeopardized, as is the fact under present conditions. Until such a time as the public realize that economic disposal of sewage must take place on land rather than in water, laws absolutely preventing any contact with the infected shellfish should be enforced without exception. In instances like these it is greatly to be deplored that but rarely under our system of government can legislation, which the best knowledge and common-sense demand for the public weal, be passed in its adequate and beneficial entirety, but is so frequently emasculated in the selfish interests of a few persons.

IV. Natural Agencies.—The above causes are given as they are obviously important, but by no means are they to be considered the only reasons. Geographic and climatic changes often explain the extinction of shellfish in certain localities.

The Present Abuses of the Shellfisheries.

Not only has this survey shown by specific examples the alarming but actual decline of the natural shellfish supply (in spite of deceptive production statistics), but it has brought to light numerous evils of various kinds. These abuses have developed gradually with the rise of the shellfisheries, until at the present day they cannot be overlooked or considered unimportant. So closely are these connected with the present status of our shellfishery that upon their abolition depends its future success or failure. Some need immediate attention; others will require attention later. After a thorough and competent investigation, remedies for the correction of each evil should be applied.

In the future Massachusetts will have to utilize all her wealth of natural resources, to keep her leading position among the other States of the Union. To do this she should turn to her sea fisheries, which have in the past made her rich, and hold forth prospects of greater wealth in the future. Untold possibilities of wealth rest with her shellfisheries, if obsolete methods and traditions can be cast aside. In any age of progress the ancient and worthless must be buried beneath the ruins of the past, while the newer and better take their place. There is no more flagrant example of obsolete methods and traditions holding in check the development of an industry than with the shellfisheries, and it is time that Massachusetts realized these limitations.

The shellfisheries of Massachusetts are in a chaotic state, both legally and economically. The finest natural facilities are wasted, and thousands of acres of profitable flats are allowed to lie barren merely for a lack of initiative on the part of the general public. This chaotic and unproductive state will exist until both the consumer and the fishermen alike understand the true condition of affairs, and realize that in the bays, estuaries and flats of Massachusetts lies as much or more wealth, acre for acre, as in the most productive market gardens.