Uji Toksisitas Ekstrak Daun Ketepeng Cina (Cassia alata L.) pada Keong Mas (Pomacea canaliculata L.)

Abstract: This experimental study aimed to analyze the toxicity of the Cassia alata L. leaves extract in Pomacea canaliculata L with the concentration of the extract as independent variable and the mortality of Pomacea as the  dependent  one.  There  were  two  steps  in  this  study:  introductory  test  and  main  test.  Both  of  them  were done  to  examine  LC50  (lethal  concentrate)  and  LT50  (lethal  time)  using  the  number  of  mortality  and  its velocity  during  48  hour  observation.  Based  on the  introductory  study,  we  chose concentrate  of  2,5  %;  3%; 3,5%; 4%; and 4;5% of the leaves extract for the treatment groups. Control group were not given any extract. Every group of treatment consisted of 50 Pomacea and each treatment was done 5 times so that there were 1500 Pomacea used in this study. Probit analysis was used for this study result. I then be sown that  Cassia alata L. leaves extract could cause mortality of Pomacea canaliculata L which occured from 4 hour after the start of the study. The LC50 was 4,290% of leaves extract after 16 hours after the application with regression  slope Y = 2,456 + 4,561X, and the LT50 was 29,834% with Y = 0,047 + 1,976X.
Keywords: Cassia alata L, Pomacea canaliculata L, Mortality
Penulis: St. Fatmah Hiola dan Arsad Bahri
Kode Jurnal: jpbiologidd100193

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Jp Biologi dd 2010