Being a generalist herbivore in a diverse world: how do diets from different grasslands influence food plant selection and fitness of the grasshopper Chorthippus parallelus?

Franzke A, Unsicker SB, Specht J, Koehler G, Weisser WW (2010)
ECOLOGICAL ENTOMOLOGY 35(2): 126-138.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
2. Grasshopper diet consisted of grasses (92.5%), legumes (6.7%) and, in small quantities, other forbs (0.8%). Diet selection differed between the four food plant mixtures, and depended on grasshopper sex and developmental stage. There was no correlation between the relative abundance of plant species in the field and the fraction of these species in the grasshopper diet. 3. Grasshoppers survived on average for 40.4 +/- 1.0 days before maturity, grew 106.8 mg until maturity moult, and females laid 4.1 +/- 0.4 egg pods, each of which contained 8.5 +/- 0.4 eggs. However, despite the differences in feeding behaviour, grasshopper fitness was the same in all of the four food plant mixtures. While the digestibility of ingested food was similar in the four different treatments, indices indicated differences in the conversion efficiency to body mass. 4. Our results show that C. parallelus is a plastic feeder with no fixed preferences in diet composition. The results emphasise that generalist herbivores can counteract putative quality deficiencies of single food plants by selective dietary mixing.
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Zeitschriftentitel
ECOLOGICAL ENTOMOLOGY
Band
35
Zeitschriftennummer
2
Seite
126-138
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Franzke A, Unsicker SB, Specht J, Koehler G, Weisser WW. Being a generalist herbivore in a diverse world: how do diets from different grasslands influence food plant selection and fitness of the grasshopper Chorthippus parallelus? ECOLOGICAL ENTOMOLOGY. 2010;35(2):126-138.
Franzke, A., Unsicker, S. B., Specht, J., Koehler, G., & Weisser, W. W. (2010). Being a generalist herbivore in a diverse world: how do diets from different grasslands influence food plant selection and fitness of the grasshopper Chorthippus parallelus? ECOLOGICAL ENTOMOLOGY, 35(2), 126-138. doi:10.1111/j.1365-2311.2009.01168.x
Franzke, A., Unsicker, S. B., Specht, J., Koehler, G., and Weisser, W. W. (2010). Being a generalist herbivore in a diverse world: how do diets from different grasslands influence food plant selection and fitness of the grasshopper Chorthippus parallelus? ECOLOGICAL ENTOMOLOGY 35, 126-138.
Franzke, A., et al., 2010. Being a generalist herbivore in a diverse world: how do diets from different grasslands influence food plant selection and fitness of the grasshopper Chorthippus parallelus? ECOLOGICAL ENTOMOLOGY, 35(2), p 126-138.
A. Franzke, et al., “Being a generalist herbivore in a diverse world: how do diets from different grasslands influence food plant selection and fitness of the grasshopper Chorthippus parallelus?”, ECOLOGICAL ENTOMOLOGY, vol. 35, 2010, pp. 126-138.
Franzke, A., Unsicker, S.B., Specht, J., Koehler, G., Weisser, W.W.: Being a generalist herbivore in a diverse world: how do diets from different grasslands influence food plant selection and fitness of the grasshopper Chorthippus parallelus? ECOLOGICAL ENTOMOLOGY. 35, 126-138 (2010).
Franzke, Alexandra, Unsicker, Sybille B., Specht, Juliane, Koehler, Guenter, and Weisser, Wolfgang W. “Being a generalist herbivore in a diverse world: how do diets from different grasslands influence food plant selection and fitness of the grasshopper Chorthippus parallelus?”. ECOLOGICAL ENTOMOLOGY 35.2 (2010): 126-138.