estuaaane land deseal at alalll ampaundanene Silmlly is tantaolled by lined byrpass eanals and sea wens eaa locks sash aae gaaded to suat pmud eonda anas, ea a salanaty mos: as established In mlx speeles as diverse as ealp and mullet, Wheae lade and sneaens antelaet, as an some Hawaiian lash pundS, bath taeshwatea and mannespeeles eahbesultavaled lnone pond senes bnel ammeesalan ln sail wales as an old aemedv lur aeduealag hangal disease an lteshwalee lash FLOW Even very anodesl new shmulates gaseous eaehnnge, phlnbsynlhesls, and theaeloae gaaawlh an plants up tea a level wheae melhanleal damage by tuabulenee ean lteeaae How an hmdrnch waleas aneaeases yaelds tat beyand ltlat possible an stall ponds, but meal staeams dta anal have heavy namrll load yields unless lhey are leatallsed lat mamated, and lhen a ymblem ul slaeam eloggang walh aquane weeds ean aeetae, neeessitatang (anl by nulala, glass carp lWhile Amur ealpi ot mathea ellielent herblvom nae ulhee gteal advannge 0! flow as In the aaygenatian al walee, eathea via a "Flawfunn , aelalen iripuae ml, or series ol llppled lalls at wens ln the slaeana bed the balanee we would hide in aehaeve ln llow as in maintain sullaelenl llllw lea amnan and vagaaeus plant gmwtta, but to aestalel Haw to a level where we do nlal sullel lapld leaehllag ol soluble numenls and ealeaaam rot this aeasan we nflm pape at ehannel new tn hsh and aeaeaee aaeas aaahea than walkane an the stteam llsell, whele noods an alleet us an sevetal obvlollsly deleteaauus ways aaaagmg lmm lash losses is physaeal damage in stauetuaes. and a wlpernul at balaneed lenillsew an waters. In pends we may hold bath now let a lew days to allaw rem sea upDke, lhen aesume lilaw tat nelataon 13.4 CHOICE OF FISH SPECIES (VARIETXES, FOOD, HEALTH} AND FACTORS IN YIELD SELECTION FOR EFFICIENT FOOD CONVERSION Fish llaw on lhe laephle seale, these ealang planlltoel algae, ot vegetation, aae padduled al haghea yaelds For example lal ponds used aae lealalasedl we ean teasenataly eapeea a maaamuan plodueladn/ha/yeaaol saga la paedatenl , Catfish lannlnaa aaaet bluegall lan lnsedxvmz} lava nlapu (a plankton leedetl l9wlllgk, most obviously, at out shuaee was let one species, it would be let Tllapila However, aeal-lale lesls must be earned (“H as some al lhese neal sndees or yaeld ean be aeveased xl Image as supplied aa pelleted lood paevided Farh and must be made undel the Food management sehedule palaplased beeause lash ean harvest dalleaent A70 leads male aa less eliaelenlly that example, al we add m-lleieal mad the yields ale clttalh bluegill g {Rlvrrsmg lhe nadea lound an letlllased pmlds aniyt Yields In this ease depend un the teed type tlavang selected a sel al names an this way, what ean wedn abeua t'inllllun wllhan specles’ ll we sloele a high densaty at hngeallngs at one size imilllm/hal, and leed lhtse lash. then we ean net laut lhe pond shes a lens weeks tn months and seleel only the laagea hsh as blood ulxk, be as an "ellaeienr vanety Allea only (me yeatol seleea-len. bass langeslmgs lmm sueh laskgmwing sleams elanvelted lood al an ellaeleaaey at 1.“, wheleas unseleeted nsh mayeeled at beam 73:! average, and the waasl eases at 2‘ 2.l—a range ot metabalae ellk‘lzncy gee-let than the dlllelenees tealeeaa speeiesl ls gle, I966) in ponds. and paslaeulaely whele we eaase lash in hateheeaes, ot whele the wales supply as hu- ol llsh and then daseases, we (in both seled and ensuae stoeh hee ol exlemal paaasates and antenatal paltaogens, by dose attention loeleansang eggs and lay lhe aesulls m ponds (in be ta double lhe number ol lash gaowang la anahleaty ot marketable 51:: Thus, the film laealaas above gm‘ guidelines la la. ng lash yields by seueaal dadels ol anagnalude eels aae usually eaughl at sea laselvelsl lea this mason llaeld meaease lat ltom 404mm ale aehaeved in a pond lay the iudlealaals adanaalaale at speeles Sumc eaaa-nples 1mm Swangle llabsl ale glvell hele, and male wall he gaven as mmplvs at lmdfllmul syslems latea Huweven it i. a sensable llantal appntaeh to lay to walk nut whal son ol lunenphs any species an a pelyeallluae shlauld setye slam» at these are- RAPID usz omlmumls 'naas selves lwa purposes the llast tla laa any lenallseas we may add, and the second (0 eanveaa wasles paaadueed by dense slpellang at alhel lash ideal species ale [hm lhat bleed an panda, gnaw last, and eonyeaa dwmposus an laod aellet slall al lhey form a ganup whleh doesn‘t llv oll las lnseels deal at migrate out pl the pond lhls- leeagsl They lheea aemaan as hsh lood let the young pan lash whaeh aee slewly gnawing up ideal selestaahs ale. - SHRIMP, especially at paeyided with vtgeaaaaem at blush bundles lat eavet, also small eaabs. sends lamphapodsl, and mollnses - MlNNows ur small lxzrbucding lash; again, pmvtdlsl walh eevea and saeens as the laage lash glow, of wath shallew walel Nfllgess Eaamples lhe/ha/yeatl I'mlds leaulased e Bluegill on lheatown lal saw/ha s 136A llg . Bluegill wllh Gllllblbm lash 3,449; lg lyaeld aneaease er ls llenesl OR - Bluogl“ and has. la polyeullaaae. at 3750 and m lash/ha tespeenvelyl , zlz la kg