Griffiths, R.A. and Dewijer, P. and Brady, L. (1993) The effect of ph on embryonic and larval development in smooth and palmate newts, Triturus-Vulgaris and T-Helveticus. Journal of Zoology, 230 . pp. 401-409. ISSN 0952-8369.
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The distribution of smooth newts, Triturus vulgaris, and palmate newts, Triturus helveticus, in north-west Europe is related to geology and water quality. This study compared the development of the eggs and larvae of the two species under sublethal acidic and neutral conditions. Newt embryos raised under low pH hatched at an earlier stage of development, at a smaller size, and before those raised under neutral conditions. T. vulgaris hatched at a smaller size than T. helveticus, but pH did not affect the species differentially. Larvae of both species grew to a larger size under neutral than under acid conditions. Larvae raised in heterospecific pairs grew at least as well as those raised in conspecific pairs. Feeding was depressed under acid conditions, and reduced growth may therefore be associated with changes in the behaviour of newt larvae and their prey.
|Uncontrolled keywords:||Amphibian decline; Behavioural toxicology; Embryonic survival; Fertilizers; Parental cares|
|Subjects:||G Geography. Anthropology. Recreation|
|Divisions:||Faculties > Social Sciences > School of Anthropology and Conservation|
|Depositing User:||M. Nasiriavanaki|
|Date Deposited:||01 Aug 2009 11:08|
|Last Modified:||01 Aug 2009 11:08|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/22122 (The current URI for this page, for reference purposes)|
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