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Article: Effect of temperature, salinity and delayed attachment on development of the solitary ascidian Styela plicata (Lesueur)

TitleEffect of temperature, salinity and delayed attachment on development of the solitary ascidian Styela plicata (Lesueur)
Authors
KeywordsAscidians
Delayed Attachment
Embryonic Development
Larvae
Metamorphosis
Styela Plicata
Issue Date2003
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jembe
Citation
Journal Of Experimental Marine Biology And Ecology, 2003, v. 290 n. 1, p. 133-146 How to Cite?
AbstractThe solitary ascidian Styela plicata (Lesueur) is a common member of epibenthic marine communities in Hong Kong, where seawater experiences extensive seasonal changes in temperature (18-30°C) and salinity (22-34 ‰). In this investigation, the relative sensitivity of different developmental stages (i.e., duration of embryonic development, larval metamorphosis and post-larval growth) to various temperature (18, 22, 26 and 30°C) and salinity (22 ‰, 26 ‰, 30 ‰ and 34 ‰) combinations is reported. Fertilized eggs did not develop at lower salinities (22 ‰ and 26 ‰). At higher salinities (30 ‰ and 34 ‰), the duration of embryonic development increased with decreasing temperature (18°C: 11.5 ± 0.3 h; 30°C: 8.5 ± 0.3 h). More than 50% of larvae spontaneously attached and metamorphosed at all the levels of temperature and salinity tested. At higher temperatures (22, 26 and 30°C) and salinities (30 ‰ and 34 ‰), functional siphon developed in about 72 h after hatching, whereas at low temperature (18°C), siphon developed only in < 30% of individuals in about 90 h. However, none of the metamorphosed larvae developed subsequently at low salinity (22 ‰). When forced to swim (or delayed attachment), larvae lost about 0.27 mJ after 48 h (about 22% of the stored energy). Such a drop in energy reserves, however, was not strong enough to cause a significant impact on post-larval growth. This study suggests that temperature and salinity reductions due to seasonal monsoon may have significant effect on the embryo and post-larval growth of S. plicata in Hong Kong. © 2003 Elsevier Science B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/178805
ISSN
2015 Impact Factor: 1.796
2015 SCImago Journal Rankings: 1.029
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorThiyagarajan, Ven_US
dc.contributor.authorQian, PYen_US
dc.date.accessioned2012-12-19T09:49:50Z-
dc.date.available2012-12-19T09:49:50Z-
dc.date.issued2003en_US
dc.identifier.citationJournal Of Experimental Marine Biology And Ecology, 2003, v. 290 n. 1, p. 133-146en_US
dc.identifier.issn0022-0981en_US
dc.identifier.urihttp://hdl.handle.net/10722/178805-
dc.description.abstractThe solitary ascidian Styela plicata (Lesueur) is a common member of epibenthic marine communities in Hong Kong, where seawater experiences extensive seasonal changes in temperature (18-30°C) and salinity (22-34 ‰). In this investigation, the relative sensitivity of different developmental stages (i.e., duration of embryonic development, larval metamorphosis and post-larval growth) to various temperature (18, 22, 26 and 30°C) and salinity (22 ‰, 26 ‰, 30 ‰ and 34 ‰) combinations is reported. Fertilized eggs did not develop at lower salinities (22 ‰ and 26 ‰). At higher salinities (30 ‰ and 34 ‰), the duration of embryonic development increased with decreasing temperature (18°C: 11.5 ± 0.3 h; 30°C: 8.5 ± 0.3 h). More than 50% of larvae spontaneously attached and metamorphosed at all the levels of temperature and salinity tested. At higher temperatures (22, 26 and 30°C) and salinities (30 ‰ and 34 ‰), functional siphon developed in about 72 h after hatching, whereas at low temperature (18°C), siphon developed only in < 30% of individuals in about 90 h. However, none of the metamorphosed larvae developed subsequently at low salinity (22 ‰). When forced to swim (or delayed attachment), larvae lost about 0.27 mJ after 48 h (about 22% of the stored energy). Such a drop in energy reserves, however, was not strong enough to cause a significant impact on post-larval growth. This study suggests that temperature and salinity reductions due to seasonal monsoon may have significant effect on the embryo and post-larval growth of S. plicata in Hong Kong. © 2003 Elsevier Science B.V. All rights reserved.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jembeen_US
dc.relation.ispartofJournal of Experimental Marine Biology and Ecologyen_US
dc.subjectAscidiansen_US
dc.subjectDelayed Attachmenten_US
dc.subjectEmbryonic Developmenten_US
dc.subjectLarvaeen_US
dc.subjectMetamorphosisen_US
dc.subjectStyela Plicataen_US
dc.titleEffect of temperature, salinity and delayed attachment on development of the solitary ascidian Styela plicata (Lesueur)en_US
dc.typeArticleen_US
dc.identifier.emailThiyagarajan, V: rajan@hkucc.hku.hken_US
dc.identifier.authorityThiyagarajan, V=rp00796en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S0022-0981(03)00071-6en_US
dc.identifier.scopuseid_2-s2.0-0038742861en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0038742861&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume290en_US
dc.identifier.issue1en_US
dc.identifier.spage133en_US
dc.identifier.epage146en_US
dc.identifier.isiWOS:000182762000008-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridThiyagarajan, V=6602476830en_US
dc.identifier.scopusauthoridQian, PY=35240648600en_US

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