Titlebook: Vertical Food Web Interactions; Evolutionary Pattern Konrad Dettner,Gerhard Bauer,Wolfgang Völkl Book 1997 Springer-Verlag Berlin Heidelber

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Ecdysteroids in Pycnogonids: Hormones and Interspecific Allelochemicalsts. While in terrestrial systems plants are the dominating organisms with regard to the number of substances, in marine habitats the invertebrates are the most productive source of secondary metabolites (Faulkner 1994). Most of these compounds from marine invertebrates are assumed to have a defensiv

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Growth and Development in Parasitoid Wasps: Adaptation to Variable Host Resourcesn how immature parasitoids adapt to variation in host resources. The kind and the amount of resources provided by the host determine its quality for parasitoid survival and development (Mackauer and Sequeira 1993). In idiobionts, species that develop in non-feeding host stages such as eggs and pupae

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