Experimental herbivory of native Australian macrophytes by the introduced Mozambique tilapia Oreochromis mossambicus

R.G. Doupé; M.J. Knott; J. Schaffer; D.W. Burrows; A.J. Lymbery

doi:10.1111/j.1442-9993.2009.02008.x

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Experimental herbivory of native Australian macrophytes by the introduced Mozambique tilapia Oreochromis mossambicus

Journal article

Peer reviewed

Experimental herbivory of native Australian macrophytes by the introduced Mozambique tilapia Oreochromis mossambicus

R.G. Doupé, M.J. Knott, J. Schaffer, D.W. Burrows and A.J. Lymbery

Austral Ecology, Vol.35(1), pp.24-30

2010

DOI: https://doi.org/10.1111/j.1442-9993.2009.02008.x

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Abstract

This study describes experimental herbivory and detritivory of three common native aquatic macrophyte species by the introduced Mozambique tilapia Oreochromis mossambicus (Peters) (Pisces: Cichlidae), and its physiological response to their consumption. There was a highly significant effect of fish herbivory on plant weight for each of the macrophyte species, but this effect was not influenced by any preference for periphyton. Despite the herbivory, there was a highly significant loss of fish body weight across all plant species and weight could only be maintained by supplementary feeding of a high protein fish flake. These results suggest that despite eating these plants, an alternative food resource may be needed for survival and may trigger trophic plasticity in O. mossambicus.

Details

Title: Experimental herbivory of native Australian macrophytes by the introduced Mozambique tilapia Oreochromis mossambicus
Authors/Creators: R.G. Doupé (Author/Creator)
M.J. Knott (Author/Creator)
J. Schaffer (Author/Creator)
D.W. Burrows (Author/Creator)
A.J. Lymbery (Author/Creator)
Publication Details: Austral Ecology, Vol.35(1), pp.24-30
Publisher: Blackwell Publishing Inc
Identifiers: 991005545527207891
Copyright: © 2010 Ecological Society of Australia.
Murdoch Affiliation: Centre for Fish and Fisheries Research
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.2 Marine Biology; 3.2.62 Freshwater Fish Ecology
Web Of Science research areas: Ecology
ESI research areas: Environment/Ecology