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'''The resource fragmentation hypothesis''' was first proposed by [[Janzen & Pond]] (1975), and says that as [[species]] richness becomes large there is not a linear increase in the number of [[parasitoid]] species that can be supported. The mechanism for this [[hyperbolic]]{{Disambiguation needed|date=December 2012}} relationship is suggested to be that each of the new host species are too rare to support the evolution of specialist parasitoids (Janzen & Pond, 1975). The resource fragmentation hypothesis is one of two hypotheses that seek to explain the distribution of the [[Ichneumonidae]].▼
▲'''The resource fragmentation hypothesis''' was first proposed by [[Janzen & Pond]] (1975), and says that as [[species]] richness becomes large there is not a linear increase in the number of [[parasitoid]] species that can be supported. The mechanism for this [[hyperbolic]] relationship is suggested to be that each of the new host species are too rare to support the evolution of specialist parasitoids (Janzen & Pond, 1975). The resource fragmentation hypothesis is one of two hypotheses that seek to explain the distribution of the [[Ichneumonidae]].
==Further reading==
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== References ==
Janzen, D.H. & Pond, C.M. (1975) A comparison by sweep sampling of the arthropod fauna of secondary vegetation in Michigan, England, and Costa Rica. ''Transactions of the Royal Entomological Society of London'', 127, 33-50.
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