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Memorial University - Electronic Theses and Dissertations 4
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Document Description
TitleReproductive biology of deep-sea soft corals in the Newfoundland and Labrador region
AuthorSun, Zhao.
DescriptionThesis (M.Sc.)--Memorial University of Newfoundland, 2009. Biology
Pagination1 v. in various foliations : ill., maps
SubjectAlcyonacea--Development--Newfoundland and Labrador; Alcyonacea--Habitat--Newfoundland and Labrador; Alcyonacea--Newfoundland and Labrador--Reproduction
Degree GrantorMemorial University of Newfoundland. Dept. of Biology
Spatial CoverageCanada--Newfoundland and Labrador
NotesIncludes bibliographical references.
AbstractThis research integrates processing of preserved samples and, for the first time, long-term monitoring of live colonies and the study of planula behaviour and settlement preferences in four deep-sea brooding octocorals (Alcyonacea: Nephtheidae). Results indicate that reproduction can be correlated to bottom temperature, photoperiod, wind speed and fluctuations in phytoplankton abundance. Large planula larvae are polymorphic, exhibit substratum selectivity and can fuse together or with a parent colony. Planulae of two Drifa species are also able to metamorphose in the water column before settlement. This research thus brings evidence of both the resilience (i.e., extended breeding period, demersal larvae with a long competency period) and vulnerability (i.e., substratum selectivity, slow growth) of deep-water corals; and open up new perspectives on experimental studies of deep-sea organisms.
Resource TypeElectronic thesis or dissertation
FormatImage/jpeg; Application/pdf
SourcePaper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifiera3217527
RightsThe author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
CollectionElectronic Theses and Dissertations
Scanning StatusCompleted
PDF File(18.51 MB) --
CONTENTdm file name70699.cpd