Royal Society study on adaptability of fish to warming oceans

s across space and which are the causes of such synchrony is considered to be fundamental questions in population biology. The issue of spatial population synchrony has also an applied interest since it affects both the likelihood of extinction of endangered species and our ability to control pest organisms. Dispersal movements have been claimed to be a universal cause of population synchrony. However, our study, which for the first time combines experimental data and mathematical modelling revealed that dispersal could interact with population density in a way that eliminates its synchronising effect.
Contact: Professor RA Ims, Department of Biology, University of Tromso, TROMSO, N-9037, Norway

Limited genetic exchanges between populations of an insect pest living on wild and related cultivated host plants by Mrs A. Vialatte, Dr CA Dedryver, Dr JC Simon, Mrs M Galman and Dr M Plantegenest

We assessed the role of non-crop habitats as reservoirs or refuges for the aphid pest Sitobion avenae that attacks cereals by investigating genetic structure of populations collected on both several cereal crops and uncultivated hosts at the landscape scale. Analyses indicated that genetic differentiation was high between populations on uncultivated hosts and on crops, indicating relatively limited gene flow between these two habitat types. Nevertheless certain uncultivated hosts showed greater exchange of aphid populations with the crops. These could act as reservoir of genetic diversity that could enhance the adaptive potential of S. avenae, in particular in response to the modification of agricultural practices.
Contact: Dr Manuel Plantegenest, Bio3P, INRA, Equipe "Biologie et Gntique des Populations, LE RHEU, 35327, France

Sperm competition and the evolution of male reproductive anatomy in rodents by Mr SA Ramm, Professor GA Parker and Dr P Stockley

Female mammals often mate with multiple males, leading to competition bet

Contact: Tim Watson
Royal Society

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