The predation gauntlet: early post-settlement mortality in reef fishes

Almany, Glenn R., and Webster, Michael S. (2006) The predation gauntlet: early post-settlement mortality in reef fishes. Coral Reefs, 25 (1). pp. 19-22.

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Most marine fishes have pelagic larvae that settle to benthic juvenile/adult habitats. Ecologists have argued that mortality rates are particularly high during the settlement transition, but relevant data have been sparse. Recently, researchers have used several novel techniques to estimate the magnitude of predation mortality during the settlement transition. We used meta-analysis to determine that for 24 taxonomically diverse species in geographically widespread locations, an estimated 55.7% (CI: 43.0–65.5%) of juveniles were consumed within 1–2 days of settlement. Such high mortality highlights this brief period as a key phase in the life history of fishes and supports the view that these communities are strongly influenced by predation. Additionally, we argue that because predators have such strong effects on juvenile survival, the population and community dynamics of reef fishes may be linked to human exploitation of reef predators.

Item ID: 1459
Item Type: Article (Research - C1)
ISSN: 0722-4028
Keywords: meta-analysis, predation, recruitment, reef fish, settlement
Date Deposited: 31 May 2007
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%
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