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Article: Reproductive impairment of sea urchin upon chronic exposure to cadmium. Part II: Effects on sperm development

TitleReproductive impairment of sea urchin upon chronic exposure to cadmium. Part II: Effects on sperm development
Authors
KeywordsEchinoids
Mitochondrial dis-organization
Nuage
Spermatogenesis
Tail defects
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. 11-20 How to Cite?
AbstractChronic pollution may impair the reproductive success of adult organisms through a decrease in the quality of gametes. Our parallel study on gamete quality, showed that male sea urchins were more sensitive than the females towards cadmium pollution. The effects of chronic exposure to 0.01 and 1 ppm Cd 2+ on sperm development of the sea urchin Anthocidaris crassispina were studied. Despite the fact that no significant change in gonad index was observed when sea urchins were exposed to both levels of Cd 2+ for 4 weeks, deposition of electron-dense materials was conspicuous at the wall and intracellular space of male gonads. Apparent cytological alterations were observed in sperm cells, including changes in morphology of nuage in spermatogonia. The discrete, granular bodies of nuage were replaced by a large electron-dense body. Spermatozoa with short, incomplete 'broken' tails (scanning electron microscope observation) or tails of spermatids/spermatozoa with extraordinary electron-density (transmission electron microscope observation) were more abundant in gonads exposed to both levels of Cd 2+. Mitochondrial cristae deformation was observed for sperm cells at all stages of development. Sperm plasma membrane also became more convoluted but acrosome remained intact. The observed cytological distortion of sperm tails and mitochondria/midpiece could help to explain the decline in motility as well as poor perseverance in sperm produced by sea urchins exposed to cadmium observed in our earlier study. Copyright (C) 2000 Elsevier Science Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/92717
ISSN
2015 Impact Factor: 4.839
2015 SCImago Journal Rankings: 2.045
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorAu, DWTen_HK
dc.contributor.authorReunov, AAen_HK
dc.contributor.authorWu, RSSen_HK
dc.date.accessioned2010-09-17T10:55:06Z-
dc.date.available2010-09-17T10:55:06Z-
dc.date.issued2001en_HK
dc.identifier.citationEnvironmental Pollution, 2001, v. 111 n. 1, p. 11-20en_HK
dc.identifier.issn0269-7491en_HK
dc.identifier.urihttp://hdl.handle.net/10722/92717-
dc.description.abstractChronic pollution may impair the reproductive success of adult organisms through a decrease in the quality of gametes. Our parallel study on gamete quality, showed that male sea urchins were more sensitive than the females towards cadmium pollution. The effects of chronic exposure to 0.01 and 1 ppm Cd 2+ on sperm development of the sea urchin Anthocidaris crassispina were studied. Despite the fact that no significant change in gonad index was observed when sea urchins were exposed to both levels of Cd 2+ for 4 weeks, deposition of electron-dense materials was conspicuous at the wall and intracellular space of male gonads. Apparent cytological alterations were observed in sperm cells, including changes in morphology of nuage in spermatogonia. The discrete, granular bodies of nuage were replaced by a large electron-dense body. Spermatozoa with short, incomplete 'broken' tails (scanning electron microscope observation) or tails of spermatids/spermatozoa with extraordinary electron-density (transmission electron microscope observation) were more abundant in gonads exposed to both levels of Cd 2+. Mitochondrial cristae deformation was observed for sperm cells at all stages of development. Sperm plasma membrane also became more convoluted but acrosome remained intact. The observed cytological distortion of sperm tails and mitochondria/midpiece could help to explain the decline in motility as well as poor perseverance in sperm produced by sea urchins exposed to cadmium observed in our earlier study. 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.subjectEchinoidsen_HK
dc.subjectMitochondrial dis-organizationen_HK
dc.subjectNuageen_HK
dc.subjectSpermatogenesisen_HK
dc.subjectTail defectsen_HK
dc.titleReproductive impairment of sea urchin upon chronic exposure to cadmium. Part II: Effects on sperm developmenten_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)00036-1en_HK
dc.identifier.pmid11202704-
dc.identifier.scopuseid_2-s2.0-0342656171en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0342656171&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume111en_HK
dc.identifier.issue1en_HK
dc.identifier.spage11en_HK
dc.identifier.epage20en_HK
dc.identifier.isiWOS:000089336500002-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridAu, DWT=7004909228en_HK
dc.identifier.scopusauthoridReunov, AA=55408800400en_HK
dc.identifier.scopusauthoridWu, RSS=7402945079en_HK

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