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Article: Larval development and metamorphic behaviour of the subtropical spionid polychaete Pseudopolydora vexillosa

TitleLarval development and metamorphic behaviour of the subtropical spionid polychaete Pseudopolydora vexillosa
Authors
KeywordsLarvae
Larval Growth
Metamorphosis
Sediment Selection
Spionid
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jembe
Citation
Journal Of Experimental Marine Biology And Ecology, 2008, v. 357 n. 2, p. 99-108 How to Cite?
AbstractAlthough newly described, Pseudopolydora vexillosa is one of the most conspicuous surface-feeding spioniform polychaetes in subtropical waters. This is the first report on larval growth and metamorphosis of P. vexillosa. Newly hatched (3-chaetigers stage) larvae of P. vexillosa reached metamorphic competence at 12-17 chaetigers stage when fed with Chaetoceros gracilis or Dunaliella tertiolecta at a concentration of ∼ 105 cells ml- 1 for 6 to 8 days at 32 psu and 27 °C. Larvae on these two diets achieved comparable levels, of approximately 70% metamorphosis. On the other hand, larvae fed with Isochrysis galbana or starved in 0.22 μm filtered seawater never reached competence during the 10 days of study. The effect of organic matter on larval substrate selection was examined using glass beads, manipulated sediments and natural sediments. A significantly higher percentage of larvae metamorphosed on glass beads that had been submerged in unfiltered natural seawater for 5 days as compared to the control; when manipulating the organic content of sediment as a substratum, significantly more larvae metamorphosed in 100% natural sediment, compared with 0%, 25%, 50%, and 75% natural sediment mixed with different portions of ashed sediment. Surprisingly, with natural undisturbed surface sediment sampled along a transect perpendicular to a sewage discharge site, these laboratory bioassays demonstrate that the larvae of P. vexillosa are capable of responding to sedimentary cues in complex ways to find a habitat suitable for metamorphosis and survival. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/179043
ISSN
2015 Impact Factor: 1.796
2015 SCImago Journal Rankings: 1.029
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorMok, Fen_US
dc.contributor.authorThiyagarajan, Ven_US
dc.contributor.authorQian, PYen_US
dc.date.accessioned2012-12-19T09:51:36Z-
dc.date.available2012-12-19T09:51:36Z-
dc.date.issued2008en_US
dc.identifier.citationJournal Of Experimental Marine Biology And Ecology, 2008, v. 357 n. 2, p. 99-108en_US
dc.identifier.issn0022-0981en_US
dc.identifier.urihttp://hdl.handle.net/10722/179043-
dc.description.abstractAlthough newly described, Pseudopolydora vexillosa is one of the most conspicuous surface-feeding spioniform polychaetes in subtropical waters. This is the first report on larval growth and metamorphosis of P. vexillosa. Newly hatched (3-chaetigers stage) larvae of P. vexillosa reached metamorphic competence at 12-17 chaetigers stage when fed with Chaetoceros gracilis or Dunaliella tertiolecta at a concentration of ∼ 105 cells ml- 1 for 6 to 8 days at 32 psu and 27 °C. Larvae on these two diets achieved comparable levels, of approximately 70% metamorphosis. On the other hand, larvae fed with Isochrysis galbana or starved in 0.22 μm filtered seawater never reached competence during the 10 days of study. The effect of organic matter on larval substrate selection was examined using glass beads, manipulated sediments and natural sediments. A significantly higher percentage of larvae metamorphosed on glass beads that had been submerged in unfiltered natural seawater for 5 days as compared to the control; when manipulating the organic content of sediment as a substratum, significantly more larvae metamorphosed in 100% natural sediment, compared with 0%, 25%, 50%, and 75% natural sediment mixed with different portions of ashed sediment. Surprisingly, with natural undisturbed surface sediment sampled along a transect perpendicular to a sewage discharge site, these laboratory bioassays demonstrate that the larvae of P. vexillosa are capable of responding to sedimentary cues in complex ways to find a habitat suitable for metamorphosis and survival. © 2008 Elsevier 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.subjectLarvaeen_US
dc.subjectLarval Growthen_US
dc.subjectMetamorphosisen_US
dc.subjectSediment Selectionen_US
dc.subjectSpioniden_US
dc.titleLarval development and metamorphic behaviour of the subtropical spionid polychaete Pseudopolydora vexillosaen_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/j.jembe.2007.12.029en_US
dc.identifier.scopuseid_2-s2.0-40149093841en_US
dc.identifier.hkuros223066-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-40149093841&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume357en_US
dc.identifier.issue2en_US
dc.identifier.spage99en_US
dc.identifier.epage108en_US
dc.identifier.isiWOS:000254846300001-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridMok, F=23566932300en_US
dc.identifier.scopusauthoridThiyagarajan, V=6602476830en_US
dc.identifier.scopusauthoridQian, PY=35240648600en_US

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