MESH SBLECTIVITY OF MONOFILAMBNT NYLON TRAMMBL HBT IN LAXB BDI«1, BayPT •

MESH SBLECTIVITY OF MONOFILAMBNT NYLON TRAMMBL HBT IN LAXB
BDI«1, BayPT •
IBRAHIM, A. SOLIMAN
National Institute of oceanography and Fi.herie., Xayet Bey Alexandria – Bgypt.
ABS’l’RAC’l’
Experimentll fi.hing operltion. hlvt bttn clrried out in
tht llkt Edku durtng 1990 f1.h1ng with tht 11m of
1nvt.t1glt1ng tht .tltct1on bth.viour of the newly
introduced monoftllment trlmmll ntt. tn tht Northtrn Dtltt
llkt••
Ntts with thrtt d1fftrtnt me.h .1zt. (1.t. 13.50, 15.20
Ind 18.00) wtrt bt1ng u.ed,& Cllcullt10n of meln .tltct1on
ltngth. of tht.t me.ht. WlI carried out Iccording to
‘Irlnov” Ind Holt’. method. of cllcut.tion. Tht .tltction
coefficitnt of monofilament ntt. for O. IUrIUI dot. not
.igntficantly e:t’fftr from the .tltction cotfficitnt of thtst
commonly u.ed multifilament ntt••
It i. rtcommtnded thlt mort .ttention of tht ft.htrtt•
•uthortttt. in Egypt must bt pltd to tht problem of r.t.1ng
tht prt.tnt ltgal .1zt of the commtrct.l c.tch of ttl.ptl’
from 10.0 cm to 15.0 em. Tht. mty htlp tn 1ncrt••1ng tht
totll f1.h production of tht Northtrn Dtlt. l.kt••