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Changes in nucleic acid concentration of the gill, hepatopancreas and abdominal muscle tissue of the Norway lobster Nephrops norvegicus (L.) were examined after 6 and 12 wk of starvation. Significant decreases in RNA concentration, RNA:protein ratio and RNA:DNA ratio were recorded in abdominal muscle tissue following starvation, but not in gill or hepatopancreas tissue. Samples of abdominal muscle tissue were taken from lobsters from 2 sites in the Clyde Sea area, Scotland. These were south of Ailsa Craig, where N. norvegicus are thought to be nutritionally limited as a result of the high population densities that occur in this area, and south of Little Cumbrae island, where population density is lower. Evidence of nutritional limitation was provided by nucleic acid analysis which showed that the RNA concentration, RNA:protein ratio and RNA:DNA ratio of lobsters from south of Ailsa Craig were significantly lower than in lobsters of equivalent size from south of Little Cumbrae. Further studies demonstrated that animals from each site were capable of obtaining nucleic acid levels similar to those at the other site after a few weeks when exposed to different feeding regimes.

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In this written conversation, the staff of a small rural school embark on an exploration of their developing pedagogies. They consider some of the sources of their individual theories and practice, and show how they work together to challenge and support each other. They acknowledge the community of adults and children to which they belong and from which their pedagogy grows. They explore the nature of relationships within this community of learners and consider how they might describe the knowledge that teachers need and develop in the course of their work. Throughout the conversation runs the thread of trust and the part it plays in releasing adults and children to work at the furthest limits of possibility.