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Article: Reproductive development of the barnacle Chthamalus malayensis in Hong Kong: Implications for the life-history patterns of barnacles on seasonal, tropical shores

TitleReproductive development of the barnacle Chthamalus malayensis in Hong Kong: Implications for the life-history patterns of barnacles on seasonal, tropical shores
Authors
Issue Date2006
PublisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00227/index.htm
Citation
Marine Biology, 2006, v. 148 n. 4, p. 875-887 How to Cite?
AbstractHong Kong, lying just below the Tropic of Cancer (22°17′N, 114°09′E), experiences a strongly seasonal environment, with a cool almost temperate winter and a hot, tropical, summer. Histological sectioning of the gonads of the high-shore barnacle, Chthamalus malayensis Pilsbry, showed a seasonal trend in the development of its reproductive organs. Four stages of female gonad development were identified according to the cell types present: post-spawning, resting, growth and mature stages. The female gonad was mature from April to November, which was related to seawater temperatures, and entered a resting phase from December to March. Although the male gonad showed a seasonal developmental trend and reached maximum maturity in summer, the seminal vesicles were full of spermatozoa and functional throughout the year. The reproductive season of this species is therefore solely dependant upon the maturity of the female gonad. The estimated maximum number of broods per year was up to 10 and the maximum number of eggs produced per brood can reach 3,000 eggs. The minimum size for female gonad maturity was 6 mm rostro-carinal diameter (RCD) at which size, the barnacles were ∼6-month old. Sperm production occurred at a smaller size (2 mm = 2-month old). Compared with Chthamalus montagui and Chthamalus stellatus from temperate regions, C. malayensis produced a greater number of broods per year, had a longer reproductive period and faster gonad development. Chthamaloid barnacles in tropical regions may, therefore, invest more energy per year in reproduction during their life span. Contrary to the seasonal gonad developmental pattern of C. malayensis in the present study, however, C. malayensis in Singapore (which experiences only slight seasonal variation) had mature female and male gonads throughout the year, further supporting the strong role of climatic conditions effecting the reproductive biology of barnacles. © Springer-Verlag 2005.
Persistent Identifierhttp://hdl.handle.net/10722/73157
ISSN
2015 Impact Factor: 2.375
2015 SCImago Journal Rankings: 1.302
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYan, Yen_HK
dc.contributor.authorChan, BKKen_HK
dc.contributor.authorWilliams, GAen_HK
dc.date.accessioned2010-09-06T06:48:42Z-
dc.date.available2010-09-06T06:48:42Z-
dc.date.issued2006en_HK
dc.identifier.citationMarine Biology, 2006, v. 148 n. 4, p. 875-887en_HK
dc.identifier.issn0025-3162en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73157-
dc.description.abstractHong Kong, lying just below the Tropic of Cancer (22°17′N, 114°09′E), experiences a strongly seasonal environment, with a cool almost temperate winter and a hot, tropical, summer. Histological sectioning of the gonads of the high-shore barnacle, Chthamalus malayensis Pilsbry, showed a seasonal trend in the development of its reproductive organs. Four stages of female gonad development were identified according to the cell types present: post-spawning, resting, growth and mature stages. The female gonad was mature from April to November, which was related to seawater temperatures, and entered a resting phase from December to March. Although the male gonad showed a seasonal developmental trend and reached maximum maturity in summer, the seminal vesicles were full of spermatozoa and functional throughout the year. The reproductive season of this species is therefore solely dependant upon the maturity of the female gonad. The estimated maximum number of broods per year was up to 10 and the maximum number of eggs produced per brood can reach 3,000 eggs. The minimum size for female gonad maturity was 6 mm rostro-carinal diameter (RCD) at which size, the barnacles were ∼6-month old. Sperm production occurred at a smaller size (2 mm = 2-month old). Compared with Chthamalus montagui and Chthamalus stellatus from temperate regions, C. malayensis produced a greater number of broods per year, had a longer reproductive period and faster gonad development. Chthamaloid barnacles in tropical regions may, therefore, invest more energy per year in reproduction during their life span. Contrary to the seasonal gonad developmental pattern of C. malayensis in the present study, however, C. malayensis in Singapore (which experiences only slight seasonal variation) had mature female and male gonads throughout the year, further supporting the strong role of climatic conditions effecting the reproductive biology of barnacles. © Springer-Verlag 2005.en_HK
dc.languageengen_HK
dc.publisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00227/index.htmen_HK
dc.relation.ispartofMarine Biologyen_HK
dc.titleReproductive development of the barnacle Chthamalus malayensis in Hong Kong: Implications for the life-history patterns of barnacles on seasonal, tropical shoresen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0025-3162&volume=148&spage=875&epage=887&date=2006&atitle=Reproductive+development+of+the+barnacle+Chthamalus+malayensis+in+Hong+Kong:+implications+for+the+life-history+patterns+of+barnacles+on+seasonal,+tropical+shoresen_HK
dc.identifier.emailWilliams, GA: hrsbwga@hkucc.hku.hken_HK
dc.identifier.authorityWilliams, GA=rp00804en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s00227-005-0117-zen_HK
dc.identifier.scopuseid_2-s2.0-31844433483en_HK
dc.identifier.hkuros115249en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-31844433483&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume148en_HK
dc.identifier.issue4en_HK
dc.identifier.spage875en_HK
dc.identifier.epage887en_HK
dc.identifier.isiWOS:000235058600018-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridYan, Y=36092306500en_HK
dc.identifier.scopusauthoridChan, BKK=7201530640en_HK
dc.identifier.scopusauthoridWilliams, GA=7406082821en_HK

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