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

Doupe, Robert G., Knott, Matthew J., Schaffer, Jason, Burrows, Damien W., and Lymbery, Alan J. (2010) Experimental herbivory of native Australian macrophytes by the introduced Mozambique tilapia Oreochromis mossambicus. Austral Ecology, 35 (1). pp. 24-30.

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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.

Item ID: 15428
Item Type: Article (Refereed Research - C1)
ISSN: 1442-9993
Date Deposited: 28 Feb 2011 08:17
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0501 Ecological Applications > 050103 Invasive Species Ecology @ 20%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050206 Environmental Monitoring @ 40%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050211 Wildlife and Habitat Management @ 40%
SEO Codes: 96 ENVIRONMENT > 9604 Control of Pests, Diseases and Exotic Species > 960402 Control of Animal Pests, Diseases and Exotic Species in Coastal and Estuarine Environments @ 60%
96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960502 Ecosystem Assessment and Management of Antarctic and Sub-Antarctic Environments @ 30%
96 ENVIRONMENT > 9607 Environmental Policy, Legislation and Standards > 960703 Environmental Education and Awareness @ 10%
Citation Count from Web of Science Web of Science 5
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