The relative sensitivity of sperm, eggs and embryos to copper in the blue mussel (Mytilus trossulus)

J. L. Fitzpatrick, S. Nadella, C. Bucking, S. Balshine, C. M. Wood

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Copper, an essential element, is toxic at elevated concentrations, and as a result of anthropogenic activities is becoming increasingly prevalent in marine environments. In this study, we examined the effects of copper on early life stages of the blue mussel, Mytilus trossulus. We assessed the impacts of increasing copper concentrations on embryo development, egg viability, sperm fertilization capacity and, in particular, on sperm swimming speed using computer-assisted sperm analysis. Sensitivity to copper followed the pattern: embryos > sperm > eggs. A dramatic increase in abnormal embryo development was observed following exposure to copper concentrations exceeding 10 μg/L. Sperm swimming speeds decreased significantly when exposed to 100 μg/L of copper, but lower doses did not influence sperm swimming speed. Copper exposure (at any tested concentration) did not affect sperm flagellum length, or alter egg viability. Based on our results, we suggest that exposure of sperm to copper may interfere with mitochondrial activity, which reduces sperm swimming speed during the extended duration of sperm motility in blue mussel.

Original languageEnglish
Pages (from-to)441-449
Number of pages9
JournalComparative Biochemistry and Physiology - C Toxicology and Pharmacology
Volume147
Issue number4
DOIs
StatePublished - May 1 2008

Fingerprint

Mytilus edulis
Mytilus
Eggs
Spermatozoa
Copper
Embryonic Structures
Embryonic Development
Ovum
Sperm Tail
Sperm Motility
Poisons
Fertilization
Swimming

Keywords

  • Computer-assisted sperm analysis
  • Development
  • Ecotoxicology
  • Eggs
  • Fertilization
  • Sperm
  • Spermiotoxicity

ASJC Scopus subject areas

  • Biochemistry
  • Physiology
  • Health, Toxicology and Mutagenesis
  • Pharmacology

Cite this

The relative sensitivity of sperm, eggs and embryos to copper in the blue mussel (Mytilus trossulus). / Fitzpatrick, J. L.; Nadella, S.; Bucking, C.; Balshine, S.; Wood, C. M.

In: Comparative Biochemistry and Physiology - C Toxicology and Pharmacology, Vol. 147, No. 4, 01.05.2008, p. 441-449.

Research output: Contribution to journalArticle

Fitzpatrick, J. L. ; Nadella, S. ; Bucking, C. ; Balshine, S. ; Wood, C. M. / The relative sensitivity of sperm, eggs and embryos to copper in the blue mussel (Mytilus trossulus). In: Comparative Biochemistry and Physiology - C Toxicology and Pharmacology. 2008 ; Vol. 147, No. 4. pp. 441-449.
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