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Reproductive effects of heavy metals on the rough periwinkle <i style="">Littorina saxatilis </i>(Mollusca: Prosobranchia)

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Title Reproductive effects of heavy metals on the rough periwinkle Littorina saxatilis (Mollusca: Prosobranchia)
 
Creator Daka, Erema R.
Hawkins, S. J.
 
Subject Littorina saxatilis
Isle of Man
heavy metals
fecundity
size at birth
embryo abnormality
 
Description 218-224
The effects of chronic mine-related heavy metal contamination on reproduction of Littorina saxatilis from sites around the Isle of Man were assessed. Size at birth of young, reproductive output (i.e. number of embryos in brood pouch) and frequencies of abnormal embryos in the brood pouch were examined in animals from five sites. Laxey estuary was the most contaminated compared to other sites with less contamination (Peel) and relatively uncontaminated control sites (Castletown, Ramsey estuaries and the open coast near Derbyhaven). The size at birth of young ranged from 0.365-0.876 mm and the lowest mean size at birth (0.517 + 0.048 mm) was found in the animals from Laxey estuary. Those from Derbyhaven had the highest mean size at birth (0.632 + 0.063 mm). ANOVA showed a significant difference in mean size at birth of young, between individuals from the five sites (p
 
Date 2009-05-26T13:05:41Z
2009-05-26T13:05:41Z
2002-09
 
Type Article
 
Identifier 0379-5136
http://hdl.handle.net/123456789/4341
 
Language en_US
 
Publisher CSIR
 
Source IJMS Vol.31(3) [September 2002]