n African Journal of Herpetology - embryos and tadpoles as biological indicators of acidic waters : original article

Volume 50, Issue 2
  • ISSN : 2156-4574
  • E-ISSN: 2153-3660
This article is unavailable for purchase outside of Africa



<I>Xenopus laevis&lt;/I&gt; embryos and tadpoles show graded responses in terms of their hatching success, growth rate and incidence of malformations when exposed to acidity. These responses mean that they are good bioindicators of acidic waters. Exposure to a pH less than 3 results in death of all embryos and tadpoles as a result of an accelerated decline in body sodium due to sodium efflux. pH 4 affects the hatching success, growth and the incidence of malformation among embryos and tadpoles. pH 5 and pH 6 do not appear to have any detrimental effects on embryos or tadpoles.

Loading full text...

Full text loading...


Article metrics loading...


This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error