FISHERIES RESEARCH BOARD
OF CANADA
MANUSCRIPT REPORTS OF THE BIOLOGICAL STATIONS
RHEOTAXIS IN CAPI'URE OF HERRING
Huntsman, A. G.
ot"xielnr
T
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treot
unt
81'1'1ns
Figure 1.
~:;:lag~n~~~:sor~:: ~~::~~~~lda~dBa:r,l~) (M)
the largest iSland. are Deer (B) and Campobello (C).
Arrows indioate oourses ot lIl81n tlood tide tro. the
~r ~~d~~~~)isl~~a~~~:(~)B~~~ki~r~::::~~~8es.
but in eddies ot the e b t1 e.
Soale:
1
'li';'Utl'
J'isure 2.
Hlaok Prino., a bar .ir ...it.... t. along the .hora or
.rI.landandoon. tinllor.ntr.. noet'uAu.laoro...
th.bar(1),h.art(2)andpound(})aaoonatauotlld
in 1952. Dottedllneldioate.lowU.l8T.l. Sol1d
arrow. indioat. direoti"ne and pr.Talenoe or oU.l'Ient,
:~o:n!n~::~~:;x~ e':~~~~na~n:o to;b:=ir ~~tte4
b.rrilll\aeinetallghtourrent.
Soal.:
1
m
Figure,.
eirs around Harwood Island (B) in 1952: Golden Pre ..
(1), 11nal'ore (2), Dream (,), Centennial (4) and Golden
Rod (5), Deer Island (A) to lett. Arrowa indicate preTaillngcurrsnt(tloodtide). Single doUsdllne8 inicsts low tids :'vel. double dotted 5
trss (, tathOlll8)
desp, andtripls do$t8d9_tre8 (5tathOlUdesp).
western entrance.
"'be tourth _ir waa egain built with both
eaatarn and weatern antrancee, but at a poin
nearer the Irish
Channel at tha west end ot the islaDll, which is nar
low.
J'ish entered it apin onl:r fro.
observed to
swa
el side, aDd were
into it against the currant. atter havi
carried b:r the prevallin
nel.
e ch
been
currant past the weir toward the Chan-
It has been ststed that, when carried thro
the Ch"mel,
the;r coUected in tbeedd;ron tbe north s1deotthe island,
then as the current slackme4, the:r
Ch..nnsl ".lustasitthe:r_rebei
uld swi. b ok thro
textre
reotion ot the herring tro
d
h the
led"andprooeedslo
shore
caseotreotactiodi-
a distant placa into a weir.
'!'be explanstion tor the concentrstion ot weire and ot
thesardinetisher;rinthearchipelaloacrosstbeetranoeto
ass8lllllquodd:r Bs:r 18 eeen ae bei
the "a,in
dill8e sre carried tro. t eirwinteri
the erchipelago.
iob t e Il8r-
grounde outside into
ich providee 1II8I1:r and varied locations tor
their capture in weirs.