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Producers and Scroungers

Strategies of Exploitation and Parasitism

C. J. Barnard

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English
Springer-Verlag New York Inc.
05 February 2012
Many associations between organisms, both intra-and interspecific, can be usefully regarded as 'producer/scrounger' (P/S) relationships. One or more individuals or species (scroungers) within the association in some way use the behavioural or physiological investment of others (pro­ ducers) to reduce their costs of obtaining a limited resource. Examples are legion: many parasites take up more or less permanent residence in or on a host individual and use the host's ingestive, digestive or circu­ latory processes to reduce their own feeding costs; pirate (ldepto­ parasitic) individuals or species exploit the foraging investment of 'host' individuals/species by stealing procured food; inter- and intraspecific brood parasites exploit the nest-building behaviour and parental care of other species/individuals; non-displaying 'satellite' males may usurp matings (ldeptogamy) from higher ranking males whose display effort has attracted females to a courtship gathering, and so on. Scroungers appear to reduce the costs of exploiting a resource by letting producers invest the necessary time and energy in foraging, building, incubating, displaying, defending, evolving anti-predator adaptations, etc. , and then usurping the results of their efforts. The utility of scrounging, however, is conditional on a number of factors including the availability of producers, the number of scroungers exploiting them, the cost of scrounging in terms of producer avoidance, defence and/or retaliation, the value of the limited resource and the scope for alternative strategies of resource exploitation. This book brings together theoretical and empirical studies of PIS relationships in a wide variety of contexts and species.
By:  
Imprint:   Springer-Verlag New York Inc.
Country of Publication:   United States
Edition:   Softcover reprint of the original 1st ed. 1984
Dimensions:   Height: 216mm,  Width: 140mm,  Spine: 17mm
Weight:   399g
ISBN:   9781461597865
ISBN 10:   1461597862
Pages:   303
Publication Date:  
Audience:   Professional and scholarly ,  Undergraduate
Format:   Paperback
Publisher's Status:   Active
Preface.- 1. When Cheats may Prosper.- 2. Host-Parasite Interrelationships: Strategies of Coexistence and Coevolution.- 3. Kleptobiotic Interactions in Invertebrates.- 4. The Evolution of Food-scrounging Strategies Within and Between Species.- 5. The Producer/Scrounger Model and its Relevance to Sexuality.- 6. Sneaky Breeders.- 7. Brood Parasitism Within Species.- 8. Exploitation in Co-operative Societies: Models of Fitness Biasing in Co-operative Breeders.- 9. Models of Producer/Scrounger Relationships Between and Within Species.- Author Index.

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