Title : ( The effect of lead toxicity on embryonic development and early larval growth of the Echinometra mathaei sea urchin (Persian Gulf), morphologic and morphometric studies )
Authors: , Nasser Mahdavi SHahri , Zahra Ghassemzadeh , M. S. Mortazavi ,
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Abstract
Toxic effects of increased lead in sea water on the embryonic stages and early larval growth of the Echinometra mathaei sea urchin is examined in the present study. After the spawn induction and fertilization, the toxicity test was performed in 6 lead concentrations (250, 500, 1000, 2000, 4000 and 8000 µg/L). Toxic effects of this metal were studied on development of embryos until reached the 4-arms pluteus larvae. It is observed that increasing the concentrations of lead, arrested development in the early embryonic stages and led to morphologic abnormalities in the larval growth. Morphometric studies also showed a gradual decrease in larvae size with increasing the concentration of lead. Median effective concentration (EC50) value calculated for lead was 2178.94 µg/L.
Keywords
, Sea urchin, Lead, Development, Larvae, Morphometric, Persian Gulf
@article{paperid:1040628,
author = {, and Mahdavi SHahri, Nasser and Ghassemzadeh, Zahra and M. S. Mortazavi},
title = {The effect of lead toxicity on embryonic development and early larval growth of the Echinometra mathaei sea urchin (Persian Gulf), morphologic and morphometric studies},
journal = {Indian Journal of Geo-Marine Sciences},
year = {2013},
volume = {42},
number = {1},
month = {October},
issn = {0379-5136},
pages = {29--34},
numpages = {5},
keywords = {Sea urchin; Lead; Development; Larvae; Morphometric; Persian Gulf},
}
%0 Journal Article
%T The effect of lead toxicity on embryonic development and early larval growth of the Echinometra mathaei sea urchin (Persian Gulf), morphologic and morphometric studies
%A ,
%A Mahdavi SHahri, Nasser
%A Ghassemzadeh, Zahra
%A M. S. Mortazavi
%J Indian Journal of Geo-Marine Sciences
%@ 0379-5136
%D 2013
