Effects of settler size and density on early post-settlement survival of Ciona intestinalis in the field

Marshall, D. J. and Keough, M. J. (2003) Effects of settler size and density on early post-settlement survival of Ciona intestinalis in the field. Marine Ecology-progress Series, 259 139-144. doi:10.3354/meps259139


Author Marshall, D. J.
Keough, M. J.
Title Effects of settler size and density on early post-settlement survival of Ciona intestinalis in the field
Journal name Marine Ecology-progress Series   Check publisher's open access policy
ISSN 0171-8630
1616-1599
Publication date 2003-01-01
Sub-type Article (original research)
DOI 10.3354/meps259139
Open Access Status DOI
Volume 259
Start page 139
End page 144
Total pages 6
Place of publication Oldendorf, Germany
Publisher Inter-Research
Language eng
Abstract Effects of variation in larval quality on post-metamorphic performance in marine invertebrates are increasingly apparent. Recently, it has been shown that variation in offspring size can also strongly affect post-settlement survival, but variation in environmental conditions can mediate this effect. The quality of habitat into which marine invertebrate larvae settle can vary markedly, and 1 influence on quality is the number of conspecifics present. We tested the effects of settler size and settler density on early (1 wk after settlement) post-settlement survival in the field for the solitary ascidian Ciona intestinalis. Larger settlers survived better than smaller settlers, within and among groups of siblings. Increases in the density of settlers decreased survival, but the density-dependent effects were much stronger for smaller settlers. We suggest that larger settlers are better able to cope with intra-specific competition because they have greater energetic reserves or a greater capacity to feed than smaller settlers.
Keyword Ecology
Marine & Freshwater Biology
Oceanography
Offspring Size
Carry-over Effects
Recruitment
Density-dependence
Spawning Marine-invertebrates
Larval Swimming Duration
Bugula-neritina Bryozoa
Egg Size
Reproductive Output
Epifaunal Community
Growth
Quality
Metamorphosis
Competition
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Biological Sciences Publications
Ecology Centre Publications
 
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Created: Mon, 13 Aug 2007, 23:53:08 EST