Offspring size affects the post-metamorphic performance of a colonial marine invertebrate

Marshall, D. J., Bolton, T. F. and Keough, M. J. (2003) Offspring size affects the post-metamorphic performance of a colonial marine invertebrate. Ecology, 84 12: 3131-3137. doi:10.1890/02-0311

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Author Marshall, D. J.
Bolton, T. F.
Keough, M. J.
Title Offspring size affects the post-metamorphic performance of a colonial marine invertebrate
Journal name Ecology   Check publisher's open access policy
ISSN 0012-9658
Publication date 2003-01-01
Sub-type Article (original research)
DOI 10.1890/02-0311
Open Access Status File (Publisher version)
Volume 84
Issue 12
Start page 3131
End page 3137
Total pages 7
Place of publication Washington, DC, United States
Publisher Ecological Society of America
Language eng
Abstract The positive relationship between offspring size and offspring fitness is a fundamental assumption of life-history theory, but it has received relatively little attention in the marine environment. This is surprising given that substantial intraspecific variation in offspring size is common in marine organisms and there are clear links between larval experience and adult performance. The metamorphosis of most marine invertebrates does not represent a newbeginning, and larval experiences can have effects that carry over to juvenile survival and growth. We show that larval size can have equally important carryover effects in a colonial marine invertebrate. In the bryozoan Bugula neritina, the size of the non-feeding larvae has a prolonged effect on colony performance after metamorphosis. Colonies that came from larger larvae survived better, grew faster, and reproduced sooner or produced more embryos than colonies that came from smaller larvae. These effects crossed generations, with colonies from larger larvae themselves producing larger larvae. These effects were found in two populations (in Australia and in the United States) in contrasting habitats.
Keyword Ecology
Bugula Neritina
Carryover Effect
Maternal Effect
Reproductive Success
Bryozoan Bugula-neritina
Larval Swimming Duration
Egg Size
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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Citation counts: TR Web of Science Citation Count  Cited 117 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 14 Aug 2007, 00:04:09 EST