National Science Library of Georgia

Insect herbivore-host dynamics :

Dixon, A. F. G.

Insect herbivore-host dynamics : tree-dwelling aphids / A.F.G. Dixon. - Cambridge : Cambridge University Press, 2005. - 1 online resource (vii, 199 pages) : digital, PDF file(s).

Title from publisher's bibliographic system (viewed on 05 Oct 2015).

Introduction -- Tree-dwelling aphids -- Trees as a habitat : relations of aphids to trees -- Trees as a habitat : relations of aphids to their natural enemies -- Carrying capacity of trees -- Aphid abundance -- Population dynamics -- Risky dispersal -- Seasonal sex allocation -- Aphids and tree fitness -- Rarity, conservation and global warming. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.

Literature on the population dynamics of insect herbivores tends to favour a top-down regulation of abundance, owing much to the action of natural enemies. Originally published in 2005, this volume challenges this paradigm and argues that tree-dwelling species of aphids, through competition for resources, regulate their own abundance. The biology of tree-dwelling aphids is examined, particularly their adaptation to the seasonal development of their host plants. When host-plant quality is favourable, aphids, by telescoping generations, can achieve prodigious rates of increase which their natural enemies are unable to match. Using analyses of long-term population censuses and results of experiments, this book introduces students and research workers to insect herbivore-host dynamics using the interaction between aphids and trees as a model.

9780511542671 (ebook)


Aphids--Host plants.
Insect-plant relationships.
Insect societies.
Trees--Diseases and pests.

QL527.A64 / D59 2005

595.752
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