Memorial University DAI: Reproductive biology of deep-sea soft corals in the Newfoundland and Labrador region

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Title	Reproductive biology of deep-sea soft corals in the Newfoundland and Labrador region
Author	Sun, Zhao.
Description	Thesis (M.Sc.)--Memorial University of Newfoundland, 2009. Biology
Date	2009
Pagination	1 v. in various foliations : ill., maps
Subject	Alcyonacea--Development--Newfoundland and Labrador; Alcyonacea--Habitat--Newfoundland and Labrador; Alcyonacea--Newfoundland and Labrador--Reproduction
Degree	M.Sc.
Degree Grantor	Memorial University of Newfoundland. Dept. of Biology
Discipline	Biology
Language	Eng
Spatial Coverage	Canada--Newfoundland and Labrador
Notes	Includes bibliographical references.
Abstract	This 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.
Type	Text
Resource Type	Electronic thesis or dissertation
Format	Image/jpeg; Application/pdf
Source	Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifier	a3217527
Rights	The 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.
Collection	Electronic Theses and Dissertations
Scanning Status	Completed
PDF File	(18.51 MB) -- http://collections.mun.ca/PDFs/theses/Sun_Zhao.pdf
CONTENTdm file name	70699.cpd