Reduced recruitment in Hyalella azteca (Saussure, 1858) exposed to copper

M. Shuhaimi Othman, David Pascoe

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Neonates of the amphipod Hyalella azteca were exposed for a 35-day period in the laboratory to a range of copper concentrations, nominally 18 μg/l, 40 μg/l, 70 μg/l and 260 μg/l. The reproductive status of the population was assessed by recording recruitment, the number of precopulatory pairs and number of gravid females. At the end of the experiment, the body lengths of individuals were measured using image analysis. There was a significant decrease in the final population size of H. azteca with increasing copper concentration and compared with the control. Copper significantly reduced recruitment of juveniles and length composition of the final population and there was also a trend toward reduced precopula number with increasing copper concentrations.

Original languageEnglish
Pages (from-to)59-64
Number of pages6
JournalEcotoxicology and Environmental Safety
Volume53
Issue number1
DOIs
Publication statusPublished - Sep 2002
Externally publishedYes

Fingerprint

Copper
copper
Amphipoda
reproductive status
neonate
Population Density
amphipod
image analysis
Image analysis
Population
population size
Chemical analysis
experiment
Experiments

Keywords

  • Copper
  • Growth
  • Hyalella azteca
  • Population structure
  • Precopulatory guarding
  • Recruitment
  • Reproduction
  • Sublethal toxicity

ASJC Scopus subject areas

  • Environmental Chemistry
  • Environmental Science(all)

Cite this

Reduced recruitment in Hyalella azteca (Saussure, 1858) exposed to copper. / Othman, M. Shuhaimi; Pascoe, David.

In: Ecotoxicology and Environmental Safety, Vol. 53, No. 1, 09.2002, p. 59-64.

Research output: Contribution to journalArticle

Othman, M. Shuhaimi ; Pascoe, David. / Reduced recruitment in Hyalella azteca (Saussure, 1858) exposed to copper. In: Ecotoxicology and Environmental Safety. 2002 ; Vol. 53, No. 1. pp. 59-64.
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