Document Detail

Implications for toxicity tests with amphipod Gammarus aequicauda: effects of temperature and salinity on life cycle.
MedLine Citation:
PMID:  19149356     Owner:  NLM     Status:  MEDLINE    
This study explored the effect of temperature and salinity on the life cycle of Gammarus aequicauda in order to establish temperature and salinity ranges advantageous for chronic toxicity testing. A broad range of salinity-temperature conditions (salinities of 10, 20 and 36 per thousand, and temperatures of 10, 18 and 24 degrees C combined in nine different treatments) significantly influenced various reproductive aspects of G. aequicauda reared in the laboratory, from newly released juveniles to first brood production by mature adults. There was a significant linear regression between the brood size and the body size of the female. The number of juveniles released per female was highest at 10 degrees C and lowest at 24 degrees C. The temperature and salinity variations had a significant effect on the fecundity of G. aequicauda. A high temperature led to a faster individual growth and a quicker sexual development than a lower temperature. A temperature acceptable for chronic toxicity tests can be 18 degrees C, at which an acceleration of the life cycle without a lowering of the amphipod's performance was observed. Regarding salinity, results from this study showed that salinities down to 36 per thousand may also be used in sediment toxicity tests with G. aequicauda, so providing a proper and gradual acclimation.
E Prato; F Biandolino; C Scardicchio
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Environmental technology     Volume:  29     ISSN:  0959-3330     ISO Abbreviation:  Environ Technol     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2009-01-19     Completed Date:  2009-03-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9884939     Medline TA:  Environ Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1349-56     Citation Subset:  IM    
CNR-Institute for Coastal Marine Environment, Section of Taranto, Taranto, Italy.
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MeSH Terms
Amphipoda / drug effects,  growth & development,  physiology*
Body Size / drug effects,  physiology
Life Cycle Stages / drug effects*,  physiology
Osmolar Concentration
Reproduction / drug effects*,  physiology
Sodium Chloride / toxicity*
Toxicity Tests, Chronic
Reg. No./Substance:
7647-14-5/Sodium Chloride

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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