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  1. Human exploitation may not be the cause for the declining size of Patella vulgata (Common limpet): A comparison between the Late Norse and the modern populations of Patella vulgata at Sandwick Bay, Unst, Shetland Islands, UK

    Contributor(s):: Sarah Mae Brennan Silverberg

    Zooarchaeological artefacts like shells are a source of information on the exploitation of prehisotric the rocky intertidal zone. In this study the size and density of Patella vulgata was used to investigate the exploitation of rocky intertidal resources during the Late Norse occupation...

  2. Using self-selection to evaluate the acceptance of a new diet formulation by farmed fish

    Contributor(s):: Carlberg, H., Cheng, Ken, Lundh, T., Brannas, E.

    The evaluation of new diet composition is commonly achieved by performing time-consuming growth trials, which may negatively impact the welfare of a large number of fish if the feed is not accepted. Instead, the fish's behavioural responses to a new diet composition can be used as a first step in...

  3. Of mice and men: European precautionary standards challenged by uncertainty

    Contributor(s):: Roussary, A., Bouet, B., Salles, D.

    For several years, the official European method for deciding whether or not shellfish were fit for human consumption was the mouse bioassay, which was eventually replaced by chemical testing. In this paper, we examine the process of this change, looking at how devices of social, technical, and...

  4. Introduced domestic animals in the Neolithic and metal age of the Philippines evidence from Nagsabaran, northern Luzon

    Contributor(s):: Amano, Noel

  5. Altered aggression in different sized groups of crayfish supports a dynamic social behaviour model

    Contributor(s):: Patullo, B. W., Baird, H. P., Macmillan, D. L.

    Living in groups with conspecifics can increase an animal's fitness in the wild. A social environment may also be imposed by commercial farming industries. One important measure of competition and group dynamics is the level of aggressive interaction. This can also influence the level of damage...

  6. Behaviour of juvenile mud crabs Scylla serrata in aquaculture: response to odours of moulting or injured crabs

    Contributor(s):: Wall, D., Paterson, B., Mohan, R.

    Behaviour of juvenile mud crabs, Scylla serrata (70-90 mm carapace width, CW) were observed in response to odours of moulting and injured conspecifics and food (pilchard) under controlled flow conditions using bioassay technique. This study was undertaken to better understand the role that...

  7. Claw removal and feeding ability in the edible crab, Cancer pagurus : implications for fishery practice

    Contributor(s):: Patterson, L., Dick, J. T. A., Elwood, R. W.

    Feeding ability and motivation were assessed in the edible crab, Cancer pagurus, to investigate how the fishery practice of de-clawing may affect live crabs returned to the sea. Crabs were either induced to autotomise one claw, or were only handled, before they were offered food. Initially,...

  8. Motivational trade-offs and potential pain experience in hermit crabs

    Contributor(s):: Appel, M., Elwood, R. W.

    One criterion of pain experience is that the emotional response to pain may be traded-off against other motivational requirements. This was tested in hermit crabs, housed in either preferred or unpreferred species of shells, by subjecting their abdomens to electric shocks of gradually increasing...

  9. Animal production and the new social ethic for animals

    Contributor(s):: Rollin, B. E.

  10. Effects of habitat complexity on the aggressive behaviour of the American lobster ( Homarus americanus ) in captivity

    Contributor(s):: Cenni, F., Parisi, G., Gherardi, F.

    The American lobster, Homarus americanus, is one of the most economically valuable crustacean decapods worldwide, being mostly exploited to foster the live animal industry. Lobsters are typically held in storage facilities where individuals may suffer due to the repeated combats among each other....

  11. Stunning and killing of edible crabs ( Cancer pagurus )

    Contributor(s):: Roth, B., Oines, S.

    The stunning and killing efficiency of ice, superchilling (N2 gas), freezing (-37 degrees C), gradual heating (40 degrees C), boiling, piercing of ganglia, salt baths (NaCl and KCl), gas (CO2) and electricity (50 Hz AC) on edible crabs was studied. Results showed that electricity was the most...

  12. Behaviour

    Contributor(s):: Childress, M. J. Jury S. H.

    In this chapter the authors attempt to identify the important constraints on lobster behavioural evolution due to life history, morphology, physiology, habitat, biotic interactions, and most recently human habitat alterations and fishing pressure. The focus is on recent research advances...