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Tags: Mollusks + Animal welfare

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  1. 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...

  2. Interspecific evaluation of octopus escape behavior

    Contributor(s):: Wood, J. B., Anderson, R. C.

    The well-known ability of octopuses to escape enclosures is a behavior that can be fatal and, therefore, is an animal welfare issue. This study obtained survey data from 38 participants - primarily scientists and public aquarists who work with octopuses - on 25 described species of octopus. The...

  3. Octopuses ( Enteroctopus dofleini ) recognize individual humans

    Contributor(s):: Anderson, R. C., Mather, J. A., Monette, M. Q., Zimsen, S. R. M.

    This study exposed 8 Enteroctopus dofleini separately to 2 unfamiliar individual humans over a 2-week period under differing circumstances. One person consistently fed the octopuses and the other touched them with a bristly stick. Each human recorded octopus body patterns, behaviors, and...

  4. Endangered Species Bulletin, December 2004

    In this issue:4 The Prairie Wetlands Learning Center6 Reaching Out to “Save our Snakes”8 Eider Journey10 Slowing the Flow12 Creative Partners, Creative Solutions14 Teaching the Children: A Hawaiian Tradition16 All it Takes is a Little Mussel18 Bird Watchers Flock to Michigan20 The Year of the...

  5. Freshwater mussels (Bivalvia: Unionidae) in the Cajun prairie ecosystem in southwestern Louisiana

    | Contributor(s):: Malcom F. Vidrine, Gail J. Quillman-Vidrine, Malcolm F. Vidrine II, Daniel J. Vidrine, Caroline E. Vidrine

    Freshwater mussels (Bivalvia: Unionidae) once cobbled the stream bottoms in the Cajun Prairie ecosystem in south-western Louisiana. The development of canal systems for aboveground irrigation of rice fields during the last century provided additional habitat-often the canals were likewise cobbled...

  6. 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,...