Relationships between developmental instability in morphological characters and fitness of <Emphasis Type="Italic">Aphis fabae</Emphasis> population reared on two host plants |
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Authors: | G Görür C Lomonaco A Mackenzie |
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Institution: | (1) Faculty of Science and Arts, Department of Biology, Nigde University, Nigde, 51100, Turkey;(2) Departamento de Biociencias, Universidade Federal de Uberlandia, Minas Gerais, Brazil;(3) Department of Biology, University of Essex, C04 3SQ Colchester, UK |
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Abstract: | Fluctuating asymmetry (FA) and the coefficient of within-environment variation (CV
e) are often used as measures of developmental instability and indicators of developmental deviations. Aphis fabae genotypes generally manifest higher developmental instability on novel host plants, but there is genotypic variability in
this respect. Some genotypes have manifested lower developmental instability on nasturtium, where their fitness is higher.
At the population level, aphids reared on nasturtium have shown higher developmental instability and lower fitness. When large
samples are analyzed and the nonsignificant pattern of correlations is taken into account, the results of the study do not
support the hypothesis that developmental instability is always a reliable indicator of fitness.
Published in Russian in Ekologiya, 2007, Vol. 38, No. 2, pp. 131–136.
The text was submitted by the authors in English. |
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Keywords: | developmental instability fitness Aphis fabae morphology |
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