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

TitleReproductive impairment of sea urchins upon chronic exposure to cadmium. Part I: Effects on gamete quality
Authors
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
Citation
Environmental Pollution, 2001, v. 111 n. 1, p. 1-9 How to Cite?
Abstract
Successful 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.
Persistent Identifierhttp://hdl.handle.net/10722/92759
ISSN
2013 Impact Factor: 3.902
2013 SCImago Journal Rankings: 1.974
ISI Accession Number ID
References

 

Author Affiliations
  1. City University of Hong Kong
DC FieldValueLanguage
dc.contributor.authorAu, DWTen_HK
dc.contributor.authorLee, CYen_HK
dc.contributor.authorChan, KLen_HK
dc.contributor.authorWu, RSSen_HK
dc.date.accessioned2010-09-17T10:56:19Z-
dc.date.available2010-09-17T10:56:19Z-
dc.date.issued2001en_HK
dc.identifier.citationEnvironmental Pollution, 2001, v. 111 n. 1, p. 1-9en_HK
dc.identifier.issn0269-7491en_HK
dc.identifier.urihttp://hdl.handle.net/10722/92759-
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.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/envpolen_HK
dc.relation.ispartofEnvironmental Pollutionen_HK
dc.subjectCASAen_HK
dc.subjectFertilization successen_HK
dc.subjectHeavy metalsen_HK
dc.subjectInvertebrate reproductionen_HK
dc.subjectSperm motilityen_HK
dc.titleReproductive impairment of sea urchins upon chronic exposure to cadmium. Part I: Effects on gamete qualityen_HK
dc.typeArticleen_HK
dc.identifier.emailWu, RSS: rudolfwu@hku.hken_HK
dc.identifier.authorityWu, RSS=rp01398en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0269-7491(00)00035-Xen_HK
dc.identifier.pmid11202702en_HK
dc.identifier.scopuseid_2-s2.0-0343867274en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0343867274&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume111en_HK
dc.identifier.issue1en_HK
dc.identifier.spage1en_HK
dc.identifier.epage9en_HK
dc.identifier.isiWOS:000089336500001-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridAu, DWT=7004909228en_HK
dc.identifier.scopusauthoridLee, CY=7410142050en_HK
dc.identifier.scopusauthoridChan, KL=7406035727en_HK
dc.identifier.scopusauthoridWu, RSS=7402945079en_HK

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