%0 Journal Article
%T acutetoxicityandbehaviouralresponsesofafricancatfish,clariasgariepinustoaminesaltof2,4-d
%A gabrielugwemgorubongujagwung
%A macaulaybonnykoffi
%A edorionisogensimeon
%J 应用与环境生物学报
%P 347-352
%D 2010
%R 10.3724/SP.J.1145.2010.00347
%X fingerlingsofafricancatfish,clariasgariepinus[meantotallength,(7.0±1.0)cmsd;meanweight,(3.0±0.7)gsd]wereexposedtoacuteconcentrationsofaminesaltof2,4-d(0,50,200,250,350,and400mg/l)todeterminethebehaviouralresponsesandmortality.whenraisedinaquariathefishbecamehyperactive.thebeatfrequencies(opercularandtailbeatfrequencyperminute,obfandtbf)oftheexposedfishdeclinedwithincreaseintheexposuredurationandconcentration,butthereversewasthecasewithpercentmortality.thesevariablessignificantlydifferedatboththeexposuredurationandconcentrationofthetoxicant(p<0.05).anovaofthelinearregressionbetweenvariables-obf,tbfandmortalityonexposuredurationindicatedastrongpositiverelationship(p<0.001)withtheentirevariablesexceptmortalityandexposureduration.obfandtbfwereinverselycorrelatedwithexposureduration(r=-0.99;p<0.05).the96hlethalconcentrationwas165.36(133.29~190.51,c.l.)mg/landthemedianlethaltimeatthehighestconcentrationwas20.41(11.87~27.46)h.theresultsfromthisstudyrevealedthat2,4-dwasverytoxictoc.gariepinusunderlaboratoryconditionsanditsapplicationshouldtherefore,berestrictedinthefield.fig3,tab3,ref45
%K acutetoxicity
%K 2
%K 4-d
%K clariasgariepinus
%K opercularbehaviouralchange
%U http://www.cibj.com/oa/DArticle.aspx?type=view&id=201003002