Article: Reproductive impairment of sea urchins upon chronic exposure to cadmium. Part I: Effects on gamete quality

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TitleReproductive impairment of sea urchins upon chronic exposure to cadmium. Part I: Effects on gamete quality
AuthorsAu, DWT1
Lee, CY1
Chan, KL1
Wu, RSS1
KeywordsCASA
Fertilization success
Heavy metals
Invertebrate reproduction
Sperm motility
Issue Date2001
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/envpol
CitationEnvironmental Pollution, 2001, v. 111 n. 1, p. 1-9 [How to Cite?]
DOI: http://dx.doi.org/10.1016/S0269-7491(00)00035-X
AbstractSuccessful reproduction is a determining factor for species survival. Pollution may impair reproductive success of adults through effects on gamete quality. Reproductive impairment of the sea urchin Anthocidaris crassispina upon chronic (4 weeks) exposure to 0.01 and 0.1 mg l -1 Cd 2+ was investigated. Criteria used for assessing gamete quality included sperm motility, egg morphology, fertilization rate and dynamics of first cleavage. A dose-response relationship was found between Cd 2+ levels and changes in sperm motility, and percentage fertilization. Sperm motility, measured by computer-assisted sperm analysis, indicated that percent motile sperm, velocities, and percent sperm with normal trajectory were significantly affected by chronic exposure to ≥0.1 mg l -1 Cd 2+. A decline in sperm motility was also accompanied by a decrease in fertilization success of sea urchin sperm. Width/height ratio of sea urchin eggs was not affected by cadmium, but larger egg sizes were found when sea urchins were exposed to 0.1 mg l -1 Cd 2+. Male sea urchins exposed to Cd 2+ produced poorer quality sperm, as indicated by a lower percent fertilization and lower cleavage rate, implying that male sea urchins were more sensitive than females to chronic Cd 2+ exposure. Results of the present study provide an explanation of reproductive impairment in marine invertebrates upon chronic exposure to Cd 2+. Copyright (C) 2000 Elsevier Science Ltd.
ISSN0269-7491
2011 Impact Factor: 3.746
2011 SCImago Journal Rankings: 0.155
DOIhttp://dx.doi.org/10.1016/S0269-7491(00)00035-X
ISI Accession Number IDWOS:000089336500001
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorAu, DWT
dc.contributor.authorLee, CY
dc.contributor.authorChan, KL
dc.contributor.authorWu, RSS
dc.date.accessioned2010-09-17T10:56:19Z
dc.date.available2010-09-17T10:56:19Z
dc.date.issued2001
dc.description.abstractSuccessful reproduction is a determining factor for species survival. Pollution may impair reproductive success of adults through effects on gamete quality. Reproductive impairment of the sea urchin Anthocidaris crassispina upon chronic (4 weeks) exposure to 0.01 and 0.1 mg l -1 Cd 2+ was investigated. Criteria used for assessing gamete quality included sperm motility, egg morphology, fertilization rate and dynamics of first cleavage. A dose-response relationship was found between Cd 2+ levels and changes in sperm motility, and percentage fertilization. Sperm motility, measured by computer-assisted sperm analysis, indicated that percent motile sperm, velocities, and percent sperm with normal trajectory were significantly affected by chronic exposure to ≥0.1 mg l -1 Cd 2+. A decline in sperm motility was also accompanied by a decrease in fertilization success of sea urchin sperm. Width/height ratio of sea urchin eggs was not affected by cadmium, but larger egg sizes were found when sea urchins were exposed to 0.1 mg l -1 Cd 2+. Male sea urchins exposed to Cd 2+ produced poorer quality sperm, as indicated by a lower percent fertilization and lower cleavage rate, implying that male sea urchins were more sensitive than females to chronic Cd 2+ exposure. Results of the present study provide an explanation of reproductive impairment in marine invertebrates upon chronic exposure to Cd 2+. Copyright (C) 2000 Elsevier Science Ltd.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationEnvironmental Pollution, 2001, v. 111 n. 1, p. 1-9 [How to Cite?]
DOI: http://dx.doi.org/10.1016/S0269-7491(00)00035-X
dc.identifier.doihttp://dx.doi.org/10.1016/S0269-7491(00)00035-X
dc.identifier.epage9
dc.identifier.isiWOS:000089336500001
dc.identifier.issn0269-7491
2011 Impact Factor: 3.746
2011 SCImago Journal Rankings: 0.155
dc.identifier.issue1
dc.identifier.pmid11202702
dc.identifier.scopuseid_2-s2.0-0343867274
dc.identifier.spage1
dc.identifier.urihttp://hdl.handle.net/10722/92759
dc.identifier.volume111
dc.languageeng
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/envpol
dc.publisher.placeUnited Kingdom
dc.relation.ispartofEnvironmental Pollution
dc.relation.referencesReferences in Scopus
dc.subjectCASA
dc.subjectFertilization success
dc.subjectHeavy metals
dc.subjectInvertebrate reproduction
dc.subjectSperm motility
dc.titleReproductive impairment of sea urchins upon chronic exposure to cadmium. Part I: Effects on gamete quality
dc.typeArticle
Author Affiliations
  1. City University of Hong Kong