The Harvest of the Sea: A contribution to the natural and economic history of the British food fishesBertram, James Glass
Science
The Harvest of the Sea: A contribution to the natural and economic history of the British food fishes
Bertram, James Glass
Fish culture; Fisheries -- Great Britain; Fishes
hatching? Is this the story of the parr over again, or is it the case
that the fishermen had found a shoal of mixed herrings—some being of
one year’s spawning, some of another? I confess to being puzzled, and
may again remind the reader that my largest fish had never spawned, and
had not the faintest trace of milt or roe within it. Then, again, as to
the time when herrings spawn, I have over and over again asserted in
various quarters that they spawn in nearly every month of the year—an
assertion, as I have just shown, which has been proved by the recent
inquiry.
As to the place of spawning, development of the ova, and other
circumstances attendant on the increase of the herring, I promulgated
the following opinions some years ago, and I see no reason to alter
them:—The herring shoal keeps well together till the time of spawning,
whatever the fish may do after that event. Some naturalists think that
the shoal breaks up after it spawns, and that the herring then live
an individual life, till again instinctively moved together for the
grand purpose of procreating their kind. It is quite clear, I think,
that the herring moves into the shallow water because of its increased
temperature, and its being more fitted in consequence for the speedy
vivifying of the spawn. The same shoal will always gather over the same
spawning ground, and the fish will keep their position till they fulfil
the grand object of their life. The herrings will rise buoyantly to
the top water after they have spawned; before that they swim deep and
hug the ground. The herring, in my opinion, must have a rocky place
to spawn upon, with a vegetable growth of some kind to receive the
roe; shoals may of course accidentally spawn on soft ground. It is not
accurately known how long a period elapses till the spawn ripens into
life. I think, however, that herring spawn requires a period of about
six weeks to ripen. It is known that young herrings have appeared on a
spawning ground in myriads within fifty days after the departure of a
shoal, and fishermen say that no spawn can be found on the ground after
the lapse of a few weeks from the visit of the gravid shoal—that the
eggs in fact have come to life, and that the fish are swimming about;
and some fishermen assert that the little whitebait is the herring in
its first stage.
Public-domain text, read in full here on John Shaqi.
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