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Resources (1-20 of 202)

  1. "Gift giving" by wild bottle-nose dolphins (Tursiops sp.) to humans at a wild dolphin provisioning program, Tangalooma, Australia

    Contributor(s):: Holmes, B. J., Neil, D. T.

  2. 'Animal Ethics Dilemma': an interactive learning tool for university and professional training

    Contributor(s):: Hanlon, A. J., Algers, A., Dich, T., Hansen, T., Loor, H., Sandoe, P.

    'Animal Ethics Dilemma' is a freely available computer-supported learning tool (www.animalethicsdilemma.net or www.aedilemma.net) which has been developed primarily for veterinary undergraduates but is applicable also to students in other fields of animal science. The objectives of the computer...

  3. A "how-to" guide for designing judgment bias studies to assess captive animal welfare

    Contributor(s):: Bethell, E. J.

    Robust methods to assess nonhuman animal emotion are essential for ensuring good welfare in captivity. Cognitive bias measures such as the judgment bias task have recently emerged as promising tools to assess animal emotion. The simple design and objective response measures make judgment bias...

  4. A brief note on the relationship between residual feed intake and aggression behaviour in juveniles of African catfish Clarias gariepinus

    Contributor(s):: Martins, C. I. M., Hillen, B., Schrama, J. W., Verreth, J. A. J.

    Individual differences in maintenance levels have been related with energetically expensive processes such as aggression. This relationship is not fully understood as on one hand individuals with higher maintenance requirements seem to be more aggressive but on the other hand have smaller...

  5. A conditioned response overrides social attraction in common carp: a possibility for low stress sorting strongly schooling fish?

    Contributor(s):: Mesquita, F. O., Borcato, F. L., Huntingford, F. A.

    In this study we investigated whether a conditioned response to a light cue can override the strong schooling tendency of common carp, with a view to identifying a possible system for low stress control of movement for captive fish. Carp were trained in groups of three to approach and bite a...

  6. A note on alarm cues in juvenile African catfish, Clarias gariepinus Burchell: indications for opposing behavioural strategies

    Contributor(s):: Nieuwegiessen, P. G. van de, Schrama, J. W., Verreth, J. A. J.

    Following exposure of African catfish to alarm cues, a relationship (rp=0.60, N=10, P=0.07) between feed efficiency (measured as residual feed intake) and the change in percentage of time spent swimming in response to damage-released alarm cues was observed. Feed-efficient animals responded with...

  7. A preliminary investigation of the effect of repeated pedestrian approaches to Weddell seals ( Leptonychotes weddellii )

    Contributor(s):: Petel, T. van P., Giese, M., Hindell, M.

    Repeated exposure to human activity can change the behavioural response of wildlife, having implications for management. Weddell seals (Leptonychotes weddellii) breeding close to Antarctic research stations are easily accessible and regularly visited by people. To investigate the responses of...

  8. A preliminary study into the effectiveness of stroboscopic light as an aversive stimulus for fish

    Contributor(s):: Mesquita, F. de O., Godinho, H. P., Azevedo, P. G. de, Young, R. J.

    To reduce fish mortality in nature it is often necessary to expel individuals from areas modified by humans (e.g., dams) where they could be injured or killed. We tested the effectiveness of stroboscopic light as an aversive stimulus for zebrafish (Danio rerio) in captivity. We used six groups of...

  9. A test of "nutritional wisdom" in perch ( Perca fluviatilis) by self-selection of encapsulated macronutrients

    Contributor(s):: Brannas, E., Strand, A.

    Developing optimal diets based on fish macronutrient requirements is an expensive and laborious task requiring years of research. However, many species of fish can compose a species-specific optimal diet from single source macronutrients in capsules through self-selection. Eurasian perch is a...

  10. Activity budgets of captive Cape fur seals ( Arctocephalus pusillus) under a training regime

    Contributor(s):: Wierucka, K., Siemianowska, S., Wozniak, M., Jasnosz, K., Kieliszczyk, M., Kozak, P., Sergiel, A.

    Ethograms and time budgets are crucial for the behavioral assessment of nonhuman animals in zoos, and they serve as references for welfare research. This study was conducted to obtain detailed time budgets of trained Cape fur seals ( Arctocephalus pusillus) in captivity, to evaluate variations of...

  11. Activity patterns of seaweed-eating sheep on North Ronaldsay, Orkney

    Contributor(s):: Paterson, I. W., Coleman, C. D.

    The feeding behaviour of North Ronaldsay sheep on seaweed was studied quantitatively on 5-30 July 1977. Of 156 instances where spp. could be identified directly, 119 were Laminaria spp. (L. digitata, L. cloustonii and L. saccharina), 8 were Alaria esculenta, 4 were Chorda filum (1 lamb only) and...

  12. Aggression and welfare in a common aquarium fish, the Midas cichlid

    Contributor(s):: Oldfield, R. G.

    Many species of fishes are aggressive when placed in small aquaria. Aggression can negatively affect the welfare of those individuals toward whom it is directed. Animals may behave aggressively in order to defend resources such as food, shelter, mates, and offspring. The decision to defend...

  13. 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...

  14. An empirical case study examining effectiveness of environmental enrichment in two captive Australian Sea Lions ( Neophoca cinerea )

    Contributor(s):: Smith, B. P., Litchfield, C. A.

    This case study examined the effect of environmental enrichment on the activity budgets of a male and female Australian Sea Lion (Neophoca cinerea) housed together at Adelaide Zoo. Using non-food-related (intrinsic) and food-related (extrinsic) enrichment objects, the study conducted an ABABA...

  15. Animal assisted therapy Part 1: Physical therapy and rehabilitation

    Contributor(s):: Reynolds, A.

  16. Animal welfare and organic aquaculture in open systems

    Contributor(s):: Cottee, S. Y., Petersan, P.

    The principles of organic farming espouse a holistic approach to agriculture that promotes sustainable and harmonious relationships amongst the natural environment, plants and animals, as well as regard for animals' physiological and behavioral needs. However, open aquaculture systems - both...

  17. Animal welfare perspectives on recreational angling. (Special issue: Fish Behaviour and Welfare.)

    Contributor(s):: Cooke, S. J., Sneddon, L. U.

    Fish captured by recreational anglers are often released either voluntarily or because of harvest regulations in a process called "catch-and-release". Catch-and-release angling is thought to be beneficial for the conservation of fish stocks based on the premise that most of the fish that are...

  18. Antinociceptive effects of buprenorphine in zebrafish larvae: an alternative for rodent models to study pain and nociception?

    Contributor(s):: Steenbergen, P. J., Bardine, N.

    The underlying processes of nociception and pain are, despite the rodent models available, still not fully understood. One of the drawbacks of rodent model systems is the difficulty to screen compound libraries for their influence on nociception, thus slowing down the discovery of novel...

  19. Aquarium Fish Medicine

    Contributor(s):: Candace J. Carter, Mary Ann Nieves

    The keeping of ornamental fish may be the most popular animal-oriented hobby in the United States. One household in every three owns and cares for some type of pet fish. In 1985, approximately $200 million was spent on aquarium fish retail sales. An additional $289 million was spent on aquarium...

  20. Are animals capable of deception or empathy? Implications for animal consciousness and animal welfare

    Contributor(s):: Kuczaj, S., Tranel, K., Trone, M., Hill, H.