A JS'.fHOO OF ESl'lllA1'llfG ~ NUIIS.a eF $JlJ:tt F:!Sa fit

JJ7 'IlU,Ulf t.ttotQJ

,l ·'i:.ftB~ ~' , .&JiIt ',D~;t:,a' • 0," 'lit; ~~ , -i&;;&a ;;:9!lv"lIPl JkU wll ' v'L_9& i. =- uc~;~JtwC

... ".'

'MEETING OF THE BIOMETRICS SECTION The Biometrics Section will participate in the meetings of the American Association

for the Advancement of Science, which will be held in Boston, Massachusetts, December 26 to 31, 1946. The Program of the Section, which appears in this issue of Biometrics, provides for two sessions of contributed papers in which both members and non·members are invited to take part. Persons desiring to present papers should notify Dr. D. B. DeLury, Box 551, Blacksburg, Virginia. '

The headquarters of the Biometrics Section will be at the Statler Hotel and all of its meetings will be held there. The Bellevue, Commonwealth, Lincolnshire, and Parker House Hotels are' grouped about the Boston Common and are within convenient walking distance of the Statler.

Reservations should not be sent to the Hotels, but to the A.A.A.S. Housing Bureau, Convention Bureau, Chamber of Commerce, 80 Federal Street, Boston 10, Massachusetts. Give your name and address; number of people in your party; date of arrival; date of departure; first, second and third choice of hotels; and type of accomodations desired.

RESERVATIONS WILL NOT BE ACCEPTED AFTER DECEMBER 10, 1946

Hotels and Reservation Prices

HOTEL SINGLE DOUBLE

Bellevue, 21 Beacon Street

Commonwealth, 86 Bodoin Street $3.30 to $4.40

2.50

Double Beds

$4.95 to $5.50

Twin Beds

$6.60 to $7.70

4.50 Lincolnshire, 20 Charles Street 3.30 to 4.40 5.50 to 6.60

Parker House, 60 School Street 3.85 to 4.40 '5.50 to 6.60 6.60 to 7.70

6.60 to 8.80 Statler, Park Square 3.85 to 5.50 5;50 to 7.70 (All rates are subject to any 'increases a~thorized by OPAl

BIOMETRICS SECTION PROGRAM , Held in conjunction with the H3th Annual Meeting of the

AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE Boston, Massachusetts, December 27 - 29, 1946

10:00 A.M. Hotel Statler Parlor C

Headquarters - Statler Hotel

FRIDAY - DECEMBER 27

Biometric Methods in Fishery Investigations (With the Atlantic Fishery Biologists)

Papers: An Application of Multiple Regression Methods to Growth Studies in Fish Populations

Howard A. Shuck, North Atlantic Fishery Investigations , A Method of Estimating the Number of Small Fish Fry -E:~---­

W. F. Royce, North Atlantic Fishery Investigations General Discussion of Biometric Aspects of Fish Populstion

Dynamics

92

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bu "'"~\f»,/.~~,.t1~~ftJ!~1'$Qt fi~r",.. f~ 4E4t .. ;y . .t

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ntO.ss1tYor • .,~th_.l1V.tbU tr~tt.ntiV ~.~~ _ ,.. . . - . .

81.1>111.-.,.01 $~ .. o~ •.• fld.I. pto:bu.\$1 •• p.e01&Uy dltf1eult .

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tnt. tib., blmo. ~ to ~. ~ft:Lcult1"!t '.,"8.t -.tobtlq

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_tbg t·la. ~ ~ taa p!and. '$A \hIit b$wbUtg .~tus br *" .. leO ao .. t • .,.,1v;Mt.r1O' •• tbOda. !ht"~.:1J thtll .w"W

by a EU~" IfIll ~.w.t7 ~h""b. ~_ bf .. vol .. trl~ __

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The alt.~tiv. to a. total oount 18 "8_p1,. lrhi. may be obtained

tor a trq of t1sh •• e~ of fi"h,or .. truck ... loadc;£ tieh. by 1lIIing

lIlodem samp1:i.ng technique. to Qbtau aSMrple,tbe TOlu.ne of: wh1~h 18

• known tt'e.ot1on ottbe total, a rd. estima~ng the total,' bya .willPIe

proportion. In the· 0$$$0£. nngleo(mtainer o£ti$htb~t.r!'J'-1

be dtetrlbut.o. ..... lT thr01lghout the •• a8U.l!"ed~t:i.tY' or w.'\te:-in

that eont.1nei'by~til"ring and. asamplec,tknown ~m.e +JiAken. Then

the ~btr()t' frt intheentireconttdne,raybe calculated IrQlI the

propotti;()ti.tr. tftalu;pl.ed ..

·/fb!sprobl.ml. ot$cstbultingntllllOOrs offtJ;th t'ry O(Jcun-edlfh_ ..

it beell\l'l.n_&$~ tohave.ceurate esttmS.tu ·(d'th~nt1llbctrot

blaokbaQkfioutld.r fryateqke4 !tl~ experiment tode~ne the

e#'eetinx..8ot su~b .c~. All the t~htU.qtUi$ endsuggeett1ort1J

in the tou..:tng paragl'ap1l$' ha"i'ebfJEJn ~o;rk:.4 ()tt 'Witll theooop •• t1on

Of lI1'. GordOtl·:t •. DaTiI, hp.-:tntenaent of tbeWooa IS ilol$ tltation

or·th. Fuh an4 Wildlife $emce _ appl1 p$l"t1Cularly to blae~k

flOUl'id ... t •• "It i$- bel1~ that th1s __ teohn:iqul ldth a1:1ght

~1e.tt.. e.ould be u.,' ItJr ol;hel" .peel0 •

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~H® OF SWf-tnlG '

!be ~ ~1\t :tn' tak1rsr. I~ $ample :1. to l'iIQkeSUi'e

~h individual' til the group', .. pepUlatlon to be • ....,led h8.fJ _

....,. ... , "" 11, t,,-.;.. ~. of being ti1g1uded' in, the eample or ,rub_ample.,· ',When

ta.ld.ng a sub.am.pl$ :t":r0la a can or' hatching box, the content •• "'1"1: ttirred tbc:trougl\lTbut not rlolentq ellOO1?',hto ham tmft'1'~ Sub­

.. pl,. were takeu from • b!tt~hing bo:c after' $tirrtng'1dth the pad ....

dlewbi¢hil O%'~r;t.~ Med to.til"-; the b~:x e"Vet'7 tlft) hours. ~~

lI.p1&$ !rma:6ippntg {millt).u "'ere taken aftex>etirring Vitlli

.. '..u, d1vpe:r. 'Thil Qirou~r shape of th& «Mnade it tempting t6

stir in a cireular, manner. -This watt a~1ded e1nce the "b!f in $0.

case. tlQtmcnttatenoar the o<,ntml arl~ of the- fJIl'l.and $tirt-ing

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dane froll top to l.x>ttollit atd the @ntent$thoroughly mUM 'Wi thrut

....1tl:1.ng.Aft.r stJ.r:r-ing, the ~bt1_pt. '\fa$ dipped-rut quickly to

p~'event the' $Ct1velT fndmm11'1g, hr frQm avoid1ng the $u'batntple

'~Iil --'V'-ililU' ,',

In th1$ d1seu •• :tm the name iJlubMlflple 11111 be applied W

the qunt.1ty dipped from & c()nta~:r 1n ',6rie instant Md, thtt tame

.~ will be applied to the colleotion of s averal it:! \lb$ampl_

o'bta.1'i:l.Eld i"J"om one or more CMta~t8.

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ret..'nedtotb. b •• ·idXl bu.t _,. be alAIo d1Jtt~ed .flela ~

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p3.u1!lg tbft. b -.: dO'Qbltl rtMpta.le a 1tbioh tlwT ,ould be ~ .!

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-I

,~. put tog~l' '1Iith .o.tOM,'uu.H ... ~ C .. nt ••

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..... tM f't'l ,p d'13t tattlT •• t;1_lr it .U t;h~t ,... r

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(tabla 1)'. !Nt .~~./w.:r.clt •• '11th'. 10, .... ISoo:

~tn rug" in ... tr. 2.300 to 21,.$ ~o (table 1). ' ft/II , oo:rn1atiOft bet ... 111 .. &t ~ ed, ~tlt t~ ptfJ" eo ...

. ,

cnlF ..0.1. In ___ " .-0.04 tn t_ ~er. 1'h1a 11 til" "lent the vakt to.SS) 1Ih1eh 1'IOtlld 1Id$.-~ &AT 8igR!4eut tedtnort. larlt • .,t. to capture.ore. t'q :p&t (te). :

"

rlGURE 1. A COIVTAINE R FOR COUNTING SMALL FISH rRY.

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- -- --------------- --------------------------

'rna AlID EQUIPIEN'J: Rf;oQUTI'JW

A4optiOl'1ot IIrJ:1 .sampling p:roo_Ul'$ will req:uire additional work

on! the ~rt of thehatch$X'Y ,.r.ot1nIll. 'me ad4ittonalaount of_ req.u.ire« 1dllbecittvmned to a latge flrW1t'by the 1ntep'at1onot

th, .1.DlP~!.iththe l1onl1ild opefttion otpl"l!!tp&t'lnga tX'U(Jklof.d ot

fi,b to:t-,b:i,.nt. Aa an exaqple of the ~ time required, moet

ot'.] the 2$ ".Ub1IIampl.e. .~rated :1.1'1 '\able· 2'f(~retalce-n 'by 1 person and

a~ all _.t~eaby the _ •• per,o%). Ul· • total ti. at .bout

. .

ttl. can$c~rer.ed nth c~... and cons1dQtfih:leextra time wasspant

Ul1cov.~lthecan ... ttl PJ71nglo08e·· theoQvers. Furthetmon. th,

IMl"lSotadO:tng ~ecQunt1n~ was dQ:i..ngit f~th$t1rst.. time., It is

~Uned. tbat 'With rea,sonable QrgAlniaation 50liALb.-plee oan be - . .

ol;lta.1ned··.~ .. ~ oullted in 4 nVm· hoor$~ Thet'ewwld be no aesll1ty _

hOld up ·~ttu.ek.U $uff';l.cient. $!ll$.llbott).Ql'lere ava1lable,t,he

aubs:~1.$8, could: be obtained :tn lit ;f'f,ff( l'idwtes 8+1.(1 counting done

lateX' (pr~PV!ding t.ml bettles are k~pt 0001$0 t~ try. rema.i.1l allve)..

1b. e&lCt4at.ion .elf' ·an &sU*te of the t<>tal· .. ~. of .tr:r should I

J'equ.1re ~1lY. at.- lld.nut •• especiallT if Vi addling machine is avail­

'bl«.Iribd.~t ~ total tifla required tor $stimating the munber

of trr· :lJl. .. truoklOad should not differ great.lt ±":rom the tiJ.lle r .....

~UU'.d ti)·ooutlta.· ·$~le ~ ... ighu.p a truc:kl""d of tnJllt tinge~ling1l •

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