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| Web URL(s): | http://www.nrcresearchpress.com/doi/pdf/10.1139/b99-155
Last checked: 12/11/2015
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Fraser, Lauchlan H.;
Grime, J. Phillip |
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| Author Affiliation: | Natural Environmental Research Council, Unit of Comparative Plant Ecology, University of Sheffield, Sheffield, United Kingdom |
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| Title: | Aphid fitness on 13 grass species: A test of plant defence theory |
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| Source: | Canadian Journal of Botany. Vol. 77, No. 12, December 1999, p. 1783-1789. |
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| Publishing Information: | Vancouver, British Columbia: The National Research Council of Canada. |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Growth rate; Sitobion avenae; Poa annua; Biomass; Plant animal interaction; Ecological distribution; Growth-rate hypothesis
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| Abstract/Contents: | "The growth rate hypothesis, which states that fast-growing plants support more herbivores than slow-growing plants, was tested with 12 native and 1 naturalized British grasses using the grain aphid (Sitobion avenae). Five aphids were enclosed with grasses for two weeks in a growth chamber. After 2 weeks, fast-growing plants had 38 aphids, whilst slow-growing plants had 6, which supports the growth-rate hypothesis. When aphid numbers were analyzed on plants according to 'CSR' theory (Grime 1977, 1979), ruderals (R) had 54, competitors (C) had 18, and stress tolerators (S) had 6. This supports the predictions of CSR theory. Furthermore, aphid numbers increased significantly with grass growth rate and a mollusc palatability index, although this largely resulted from a single outlier, Poa annua. Aphid number was not affected by hairs on grasses. Finally, the effect of aphid feeding on grasses was tested. Generally, the greatest change in total aboveground biomass of the grasses was found in the ruderals, whilst stress tolerators had the least amount of change." |
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| Language: | English |
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| References: | 43 |
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| Note: | Abstract also appears in French
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fraser, L. H., and J. P. Grime. 1999. Aphid fitness on 13 grass species: A test of plant defence theory. Can. J. Bot. 77(12):p. 1783-1789. |
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| Web URL(s):
http://www.nrcresearchpress.com/doi/pdf/10.1139/b99-155
Last checked: 12/11/2015
Requires: PDF Reader |
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MSU catalog number: QK 1 .C3 |
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