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Title: Body size and mortality rates in coral reef fishes: a three-phase relationship
Contributor(s): Goatley, Christopher  (author)orcid ; Bellwood, David R (author)
Publication Date: 2016
DOI: 10.1098/rspb.2016.1858
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Abstract: Body size is closely linked to mortality rates in many animals, although the overarching patterns in this relationship have rarely been considered for multiple species. A meta-analysis of published size-specific mortality rates for coral reef fishes revealed an exponential decline in mortality rate with increasing body size, however, within this broad relationship there are three distinct phases. Phase one is characterized by naive fishes recruiting to reefs, which suffer extremely high mortality rates. In this well-studied phase, fishes must learn quickly to survive the many predation risks. After just a few days, the surviving fishes enter phase two, in which small increases in body size result in pronounced increases in lifespan (estimated 11 d mm-1). Remarkably, approximately 50% of reef fish individuals remain in phase two throughout their lives. Once fishes reach a size threshold of about 43 mm total length (TL) they enter phase three, where mortality rates are relatively low and the pressure to grow is presumably, significantly reduced. These phases provide a clearer understanding of the impact of body size on mortality rates in coral reef fishes and begin to reveal critical insights into the energetic and trophic dynamics of coral reefs.
Publication Type: Journal Article
Source of Publication: Proceedings of the Royal Society B: Biological Sciences, 283(1841), p. 1-6
Publisher: The Royal Society Publishing
Place of Publication: Unites Kingdom
ISSN: 0962-8452
Field of Research (FOR): 060207 Population Ecology
060205 Marine and Estuarine Ecology (incl. Marine Ichthyology)
050102 Ecosystem Function
Socio-Economic Outcome Codes: 960808 Marine Flora, Fauna and Biodiversity
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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Appears in Collections:Journal Article
School of Environmental and Rural Science

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