New phylogenetic hypotheses of adaptive radiation in Gastropoda and basic gastropod organization are discussed. Gastropods on land i.e. Archaeogastropod Neritopsina, Architaeniglossan caenogastropods, Sorbeoconch caenogastropods, Ellobioid pulmonates, Onchidioidean pulmonates, Rathouisioidean pulmonates, Succineoidean pulmonates and Stylommatophoran pulmonates.

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This paper is largely dedicated to the relationships between terrestrial gastropods and plants. It concentrates on the best studied gastropod taxa, i.e. the larger species occurring in temperate habitats of Europe and North America, namely arionids, limacids, agriolimacids and helicids. These are mostly herbivorous or omnivorous.

In this chapter, the occurrence of carnivory in terrestrial gastropods is surveyed, and the aggressive and cannibalistic behaviours in these animals are summarized. The evolution of carnivory as a feeding strategy and the associated morphological specializations are analysed. Finally, the lessons learnt from previous use of carnivorous species in biological control are discussed.

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