© WILDLIFE BIOLOGY · 6:4 (2000) Even if the mean rate of population growth is positive, populations are in danger of becoming extinct if they are too small to buffer environmental and demographic fluctuations. But how small is 'too small'? Answering this question is important to guide management decisions in fragmented landscapes. Therefore, a major task of conservation biology is to determine ...

To identify new genes required for derepression of the SUCZ (invertase) gene in Saccharomyces cereuisiae, we have isolated mutants with defects in raffinose utilization. In addition to mutations in SUCP and previously identified SNF genes, we recovered recessive mutations that define four new complementation groups, designated snj7 through snfl0. These mutations cause defects in the derepressio...

The subiculum (SB) is the principal target of the axons of the CA1 pyramidal cells and serves as the final relay in the trisynaptic loop between the entorhinal cortex and the hippocampus. We have examined synaptic plasticity in the synaptic pathway between the CA1 pyramidal cells and the SB in hippocampal slices and compared it under the same experimental condition with the synaptic plasticity ...