Show TIN TINY GERM SPREADS DISEASE AMONG FISH Dim parasite attacks the gills f wash washington lugton there are fish fash epidemic as ab well as human epidemics really ones due to a tiny parasite rejoicing lu in the name thirlus have occurred f from rom time to oliue in france germany hoi 1101 laud a and fid lit in various parts of the united states 1 this this pnra parasite site attacks freshwater fish both la in their natural en e ni and in aquaria with a resulting stilt gulting lii lops running into hundreds of dollars in III li n dicent cent paper 11 II F of states bureau of fisher les lea various methods of controlling trolling troll alis disease lit in hatcheries fish farm sanU 1 all places where fish tire kept in t artif artificial lelal confinement to make clear how the problem can bo be attacked he says it Is first necessary ry to understand something of 0 tit tho life history the parasite polka dots dota are symptoms the young according topic bojil goes through it a free swimming stage during which it wanders around through the water in sear search chlof of a host on oil coming in ili contact wl with n fish it burrows info some un scalea part especially preferring the gills bit or fins baic once e embedded in tile the fistos it grows rapidly from the no nourishment k it absorbs from the tissues and soon shows on the ibb outside as it a stall white spot badly infected fish are covered with the these polka dots dota ty nil 1 over ve fhelt fiel VL bodies in a tew few days this white body leaves the and sinks to the bottom where it shorty undergoes a transformation into a hard shelled reproductive cyst when Tie reproduction production Is complete the cyst ci bt ivd ddll 11 barats and releases relea hes hundreds of you yol jig pa es of ble the free swim illing in ing stage nil mr T I 1 bryth ryth erch states stages there tire are two ge general beral method JQ 14 Ar treating eating we the disease dl sease first ly killing idt ling tile the parasites parasite while diey at ard d attached 10 to the ilie fish and secand by destroying them after they lea leave ve the fish an andara are free swim tiling I 1 in the water jacjie arte rte first general method can an bo be used to hold the disease ills easo in III checa but will willgot not completely wipe wille it out 7 alum at the logical tithe to linin treatment tr eadmont eat mont ment lie he continues Js Is A the firszt fars t symptoms of tit th axt tease ase appear and the leight who whole fight in cariti oiling the disease should Ge directed direct application of alum sulp sulphate bate has beeh found most in ridding tare then carh sh ot the p arA the healing action of the alum leaves the patient in a loss less weakened condition than uny any of the vR various other chemicals chemic nis frieds tri eds io 0 far for this purpose the cecoria se second coria lilet method lio d which F alch attacks the adult parasite afeei after it has bas left the fish 11 Is 3 iier m ore d successful and add should be utilized ed says mr wherever possible ble it consists sini simply ply in placing the fish in swiftly running water where the parasites will he be carried anny iway before reproduction can take pla place ae the overflow should be carried aff both at tile tho top and the bottom to th ne cai re of any that do do not fal directly to the bott bottom oln infected fact ed ah in warm wea weather Wr it Is stated may LB be cured in this way in a week wee k ar or ten tell days and further epidemic prevented re vented by quarantining new stock in running water in some flowing streamy may be fenced fonceil olt off and used for foi chis purpose by i the ash sli in 1 the ure cyva ayrd tadpoles ain d got goldfish kept 1 I 1 in tanks with elsh es subject to tit this s ds ease have bea bee n found extremely helpful in keeping it ft dawni sinco they prey on the parasites for food |