Selected Descriptions:
Groundfish
There are many species of groundfish or bottom fish
caught commercially. The most common are cod, haddock and pollock (or Boston
bluefish). Flatfish including halibut (the largest in this group), flounders,
sole, plaice, and turbot also fall into this category, along with less
known fish such as silver and white hake, cusk, redfish and monkfish. Various
arrangements of hooks and nets are used to catch groundfish, some more
efficient than others. The catch may be sold fresh or salted and air dried
into "slack salted" fish. This can be cut into chips and sold in
bulk.
The hook and line fishery can be divided into:
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Handlining involves a series of baited hooks,
weighted on the bottom which are lowered to within reach of the bottom
and "jigged" or moved up and down. The vessel is anchored in one spot and
the fish are attracted to the baited hooks. The line is brought to the
surface periodically to remove the fish and add bait. The size of the fish
can be regulated by the size of the hook and type of bait to some degree.
-
Bugging is similar to handlining but instead
of bait, fluorescent orange tubing (bugs) on the hooks acts as visual lures
and the vessel drifts with the tide through a school of fish, moving back
when out of range.
-
Drailing involves a heavy, shiny "Norwegian
jig" or a specific arrangement of hooks often called a "Christmas
tree". The tree is a curved metal frame with a number of brightly coloured
pieces of plastic arranged in rows between the frame, a lead weight and
a trailing hook on each end. The vessel steams against the tide, chasing
the fish and the fisher throws the jig or tree into the water ahead of
the vessel, hauling back before the jig or tree can touch the bottom. The
shininess and bright colours attract the fish. This method of fishing is
not commonly used today.
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Longlining involves a line of hooks which
are set on the bottom and left. Typically in this area, longlining is used
to catch halibut and is called a halibut trawl. The longline is marked
with a buoy and radar reflector (or high flyer) at the surface and
anchored to the bottom.
The net fishery can be divided into:
-
Gill netting which involves a series of monofilament
nets with a cork line on top (for floatation) and a lead line on the bottom,
an anchor on each end and a high flyer and buoy at the surface for each
end. Fishers typically set 5 to 7 sets (or strings) of gill nets.
The nets are left on the bottom over night before hauling to the surface
to remove the fish.
-
Fish dragging which involves a vessel towing
a conical net across the bottom. The mouth of the net is kept open by a
float line and by doors or otter boards on the cables extending back to
the vessel. Rollers on the bottom of the net mouth facilitate the movement
of the net over the bottom. The net tapers to a closed end (the cod
end) where the fish accumulate. After a varying amount of time, the
net is winched back on board and the fish are removed. Typically the vessel
then steams back to where the tow was started, lowers the net and begins
towing anew. Usually the vessel tows against the tidal current to prevent
tangling the net and to tire the fish which swim in front of the mouth
"stemming the tide" before eventually ending up in the cod end.
Regulation of the groundfish industry involves
licensing, species quotas, seasonal closures, designated fishing areas,
mesh size of nets, dockside monitoring and observer programs.
Salmon
Aquaculture

Atlantic salmon (Salmo salar) is an anadromous
fish species, migrating to the oceans as smolts and returning as adults
to spawn in fresh water streams. A prized sport fish salmon in fresh water
are caught in gill nets or fly fishing, however, the rivers in the Bay
of Fundy are closed because of low returns of spawning salmon. Since the
late 1970's, Atlantic salmon smolts, purchased from fresh water hatcheries,
have been kept in sea cages in the Bay of Fundy and grown to a marketable
size (3.6 to 5.5kg or 8 to 12lb). Typically this takes approximately 18
months. The salmon are fed a specially formulated diet for optimum growth.
Atlantic salmon is marketed as fresh fish but some is now being canned.
Because of the salmon's life history, smolts can be transferred from fresh
water to salt water only at specific times of the year. Most are introduced
in the spring when smolts would naturally be migrating to the sea, however,
some are now added in the fall.
A number of cage sites can be seen around the
Grand Manan archipelago, including Dark Harbour, from Long Island to White
Head and in Seal Cove Sound. The sites are composed of a number of sea
cages in a buoyed grid system. A simple construction, sea cages have an
outer ring of PVC pipe which floats at the surface from which an inner
net (to contain the salmon) and an outer net (to protect salmon from predators)
are suspended. Another net is stretched over the top of the cage, above
water to keep birds away from the salmon. The cages move up and down with
the tide, unlike herring weirs which are fixed in one place and are constructed
of wooden poles or stakes. In the winter an ice shield surrounds each cage
and underwater noise makers are active to keep seals away. With any farming
situation, the sites must be kept clean and the fish little stressed to
prevent disease and its rapid spread. The cage sites are granted by the
New Brunswick Department of Fisheries and Aquaculture and they also specify
the maximum number of fish per farm.
For a discussion, the latest information and lots
of links on salmon aquaculture refer to Fundy
Net Aquaculture files.
Bluefin
Tuna
Bluefin
tuna (Thunnus thynnus) is the largest and fastest of the tuna reaching
lengths of over 270cm (or 9') and a maximum weight of 680kg (or 1500lb).
Spawning in warm waters, the adult tuna migrate north to feed on schooling
fish such as herring. Bluefins maintain a constant warm body by continuously
swimming. Up to the 1960's bluefin tuna were regularly caught in the Bay
of Fundy but apparently, responding to a drastic decline in herring in
the 1970's, tuna were scarcely seen until the late 1980's. A prized sport
fish because of its size, predictability and power, a sport fishery in
the Bay does not exist. There are also no licenses in the Grand Manan archipelago
but fishers from Nova Scotia cruise the Bay during the summer and early
fall looking for bluefin tuna. Because the fish are so valuable to the
Japanese sushi and sashimi market, some fishers use planes to spot tuna.
The tuna are caught with a hand thrown harpoon equipped with an electric
charge to stun the fish. Unlike the sport fishery, commercial tuna fishers
do not want the fish to struggle and possibly bruise or injure itself.
The tuna are dressed and flown to Japan within 72 hours of capture. The
price of the fish is directly related to the quality and fat content. Bluefin
tuna has sold in Japan for as much as $165 US/kg or $75 US/lb, although
most is sold for much less. Tuna can also be caught on baited hooks on
lines towed behind the vessel as it moves through likely areas. Sometimes
swimming into herring weirs, all attempts must be made to release the fish
alive since a quota for accidental entrapments has been difficult to negotiate.
Much controversy has occurred in this area.
Regulation of the tuna industry involves licensing,
quotas, seasonal closures, designated fishing areas, and dockside monitoring.
An international commission (the International Commission for the Conservation
of Atlantic Tunas - ICCAT) was established to curb overexploitation of
bluefin tuna.
Herring
Lobsters
Lobsters
(Homarus americanus) are a predatory clawed crustacean which can
attain large sizes (64cm or 25" and over 13.5kg or 30lb). Lobsters are
also scavengers. They have both a "pincer" and a "crusher" claw. Most lobsters
are sold at a much smaller size. Lobsters were so common when the early
Europeans explored the area that they reported picking them up along the
shore at low water. Today lobsters are caught in baited traps or pots.
The season in the Grand Manan archipelago begins the second Tuesday of
November each year until the end of June. Traps are checked daily or when
weather permits. Most traps are brought ashore in the coldest part of the
winter when lobsters are less likely to wander into traps and when scallop
draggers work close to the islands. Traps are set individually, in pairs
or in trawls of 10 to 25 traps. Bait is usually salted or fresh herring
depending on the time of year and preference of the fisher. Other fish
may also be added to the bait mixture. The lobsters are banded when removed
from the traps with rubber bands. At the end of the day they are then brought
ashore and placed in wooden lobster crates which hold about 45kg
or 100lb of table size lobsters. The crates are floated in structures called
lobster cars for short periods until they are shipped elsewhere.
Lobster fishing is regulated by licensing, designated fishing areas, seasonal
closures, limits to the number of traps, minimum size allowable, returning
to the water females carrying eggs (berried females), and recording activities
in fishing logs. A recreational lobster fishery does not exist.
Large structures for keeping lobsters for several
months called pounds, can be found along the Thoroughfare (with
access from Woodwards Cove or Grand Harbour) and White Head. The pounds
are fenced areas in the intertidal area and the water level is controlled
by flood gates. The lobsters are fed while captive although the claws are
still banded to prevent fighting and injury. Because lobsters are not caught
in the summer here, the pounds ensure a constant supply of fresh lobsters.
In other areas such as Maine and Prince Edward Island, lobster fishing
seasons are open during the summer, and these lobsters are sometimes trucked
to the Grand Manan and White Head Island lobster pounds.
Sea Lanes Lobster
Habitat Page
Scallops
Scallops (Placopecten magellanicus) are
a filter feeding, bivalve mollusks that can reach 20cm (8"). The "meat"
is actually two muscles used to regulate opening and closing of the shells.
Scallops are usually caught commercially in specially designed drags which
are towed along the bottom. Scallop fishing is regulated through licensing,
designated fishing areas,
seasonal closures, restricted working hours and days, minimum size of shell
and minimum number of "meats" per a specific weight, dockside monitoring,
recording activities in fishing logs, and for some areas satellite tracking
of vessels. Recreational scallop diving permits can be purchased from the
Department of Fisheries and Oceans. Because only the muscle is eaten, the
scallop industry is not affected by toxic algal blooms or other toxins
which can affect clams, mussels, oysters, etc.
Sea Lanes Scallop
Habitat Page
Sea
Urchins
Sea urchins (Strongylocentrotus droebachiensis)
are a spiny invertebrate with five-sided symmetry related to sea stars.
Urchins attained a size of 75mm or 3" and are usually green with a purplish
hue. The spines are relatively short. Urchins graze
algae and other material from rocks with a specialized mouth part, called
an "Aristotle's lantern". They also scavenge and are attracted to baited
lobster traps. When found in tide pools, gulls readily consume urchins
by breaking them open. Urchins sometimes camouflage themselves with bits
of seaweed, shells and small pebbles. Urchins are dragged from the bottom
using a specially designed gear which protects the urchins from being crushed
by limiting the number of rocks picked up in the gear. Scuba is also used
to collect urchins in Maine but no one still dives for urchins in the Grand
Manan archipelago. The roe is extracted in processing plants and sold in
the Japanese fish market. Regulation of the urchin fishery involves licensing,
quotas, minimum shell size, seasonal closures, and designated fishing areas.
Sea Lanes Sea
Urchin Habitat Page
Periwinkles
Common periwinkles (Littorina littorea)
were brought to Nova Scotia from Europe in the 1800's and have colonized
the Maritimes. This marine snail up to 31mm (or 1 1/4") is brownish with
stripes around the shell. Periwinkles are grazers of seaweeds. By late
summer many seaweeds show the effect of grazing - small holes through the
fronds or ragged edges, but
not all holes in seaweeds are caused by periwinkle; some algae like the
colander kelp (Agarum cibrosum), are naturally "holey". Periwinkles
are picked from rocky shores at low water, placed in mesh bags and left
in salt water for a couple of days to let the periwinkles excrete sandy
particles, etc. The periwinkles are steamed and then removed from the shell
with a toothpick. Similar to escargot, they are tasty with garlic butter.
Periwinkles are bought and sold by Roland's
Sea Vegetables.
Sea Lanes Periwinkle
Habitat Page
Soft-shelled
Clams
A bivalve mollusk, soft-shelled clams (Mya
arenaria) are filter feeders reaching up to 150mm or 6". The clams
remain buried in mud or gravel/mud mixture throughout the tide cycle and
have a retractable siphon or neck which can be extended to the surface
when the tide is in or retracted when the tide is out. This is the clam
which squirts water upwards when you walk
over tideflats. Clams are dug by hand with a fork or "clam hack"
(looks like a short handled pitch fork, the fork bent at 90º to the
handle). The clams are collected in a "kibben" (a wooden slated
box with handle - today's version is often made of plastic milk crates),
washed and sold. Clam flats are regularly monitored for toxic algal blooms
and faecal bacteria. Notices are posted when clams should not be dug. These
clams have a variety of other names including steamers and are served deep
fried, pan fried, in pies, baked or as is after steaming. A license must
be purchased to commercially harvest clams.
Sea Lanes Soft-shelled
Clams Habitat Page
Shocking, Shucking and Shacking
Three indispensable words used:
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"shocking" - removing scallop meats from the shell
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"shucking" - removing clams and mussels from their
shells
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"shacking" - gutting fish
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