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Abstract
Management.
AI~illla,1 Health Research Institute, Mansoura provincia~
Vll. Lab. .
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The prc-rcnt study was c.uricd OUI 011 •ISO alive specimens of Orcochromi, uiloticus of ditlcrcnt SIZe’
~Il\ll bo.ly II’cl~11I wc re r.uulornly cullccu.d Irom ~ spcciu] Iisl: fanu 111 Dakahlia Govcruorutc ti,r tl,c
.lctccuon ot the ,kin par.isuic diseases duriug different seasons. Clinica] SlgllS .ind posunoncm
blUlb or {J ;///P/icIIS illlc,tcd wuh ciliarcd protozoa revealed skin coloruuou witl: excessive outer
sluuy layer, :;il1:rll blond spots were detected at the base of fins, skill and sea It: detarhmcnt. also the
SKill of (Lni.oticus 1I1rCSled with 1i1(J1lOQCIlClic trematode revealed ”Iui~i’isli movement. loss uf
appctuc, ex c,,•.:’ 1 1’<: Illlll0U:i,ccrcilllll hl’lliorrklgic skill &: scale detached, li~~ly”d til”, c.uaci.uiou.
The Is,)l:ilcd P:II;LIlL•’ ”hl.lllh:d trorn examined fishes WLT,’ cilialc•d proluzua inclu .illlg Trichodina
SI’•, Clti/U./():h’//U .11’•. Snpftidi” ,p., ”lid .’ ipiosonu: (G/os.”lfd/,I .IV), Ildt,.t:lI;IICt\ prulozua
JIIdll,lillg 1,•fJllly”!;”d,, II<’,B/UI. monogcnciic uemarodcs iuvlucd GrrildllclY’-lIs .1/1., Illixed
III()IIU~CIICJ ;011.1 proiozo«. The hll:ti prevalence of skin p.u.isiric intcsiatiou In O.lIi/UlicIIS IV;t,
63.3””. The results Illdlc;Uc’d th.u the infestation rates with Tricliodina sp., Clulo.tonclt« .’1’.,
SC}jJI:Ui:t sp , .-I/,iusUIIIII .11’., Ictnhyobo.t» necator, Gvrodactylus .IP., Crusta- •(’(1 ,11I.1 ;\fixe,/
IIIfJJI(Jg •. .nc« (~- jlj’u[tJ:ou were 2U.7O/~, o.’y!•u, 13.B~~J, 3.Y%. 2.91:/~1, 7.81XI, o’!~ and G’~’o respccuvcly.
Seasonal incidence er external parasites from cxamiucd OllilolicllS revealed ih.n
Trichoiliuu -P reached its hi~hcst r.nc of inlcstauon during autumn (2(). 7~u) while the
lowest rate was dUI in~; summer 13.3(~,;., Chilodoncllu sp., reached its highest r:ill: ol’
infestation during autumn 1•+.7% aud was 110t found during summer, Scvphi.’.« sp., reached
its highest r.uc o l inlcsuuion during autumn 17,3’~’;’ and spring 14’1.. while .’ JI)ioSIJHlU
(C’/f)\S”le!!s sp.) reached its highest infestation in :\1I1UIllIl 4.7’~’1. /chilnOJhudo necator
recorded only in autumn with a rate of S. 7’X •. also Gyruducl)1l1s .11’. reached l.igh prevalence
in t\lItUIIlII 13 .. 1’!-”. 11 was noticed that ruix cd infestation with protozoa and n:onog(;IlC;i were
reached ib maximum infestation in autumn 10’% than spring 8’% Gut nOI recorded ill
summer. hic!wiliIiUI/’., Chilodoncll« sp.. Scvpliidi« sp., cuu! Apiosonn: (Ulossat cllu sp)
Slltllleel hlghcl prC\:tI”:IICC of infestation on lit” skin (J-IS;;., 72.5% C).:)S:/” and 8U’:i.
respectively But Ictuliyoboi!o necator & Mouogcnea (Gl’rodact\’/lIs sp.) showed iligllc-r
prevalence otinlcst.uiou on the lins 61.5~•;; and 57.1~•;J respectively.