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  1. Allowing captive marmosets to choose the size and position of their nest box

    Contributor(s):: Hosey, G. R., Jacques, M., Burton, M.

    Preferences for nest box size and position were tested in two groups of common marmoset (Callithrix jacchus jacchus). One group consisted of a mother, her two adult sons and one adult daughter, and the other comprised a breeding pair, their two adult sons and two adult daughters. In a pre-test...

  2. An evaluation of the suitability of contraceptive methods in golden-headed lion tamarins ( Leontopithecus chrysomelas ), with emphasis on Melengestrol acetate (MGA) implants: (I) effectiveness, reversibility and medical side-effects

    Contributor(s):: Vleeschouwer, K. de, Leus, K., Elsacker, L. van

    Finding a responsible method of population control that does not compromise animal welfare is a pressing problem for zoological institutions and conservation breeding programmes. This is exemplified by the conservation breeding programme of the golden-headed lion tamarin. The number of...

  3. An evaluation of the suitability of contraceptive methods in golden-headed lion tamarins ( Leontopithecus chrysomelas ), with emphasis on melengestrol acetate (MGA) implants: (II) endocrinological and behavioural effects

    Contributor(s):: Vleeschouwer, K. de, Elsacker, L. van, Heistermann, M., Leus, K.

    In order to be suitable, a contraceptive method should have little or no effects on social organization or behaviour. In callitrichids, changes in socio-sexual interactions between group members, due to hormonal changes induced by contraception, may have consequences for the reproductive...

  4. Assessment of stress in non-human primates: application of the neutrophil activation test

    Contributor(s):: Honess, P. E., Marin, C., Brown, A. P., Wolfensohn, S. E.

    A technique measuring leukocyte (neutrophil) activity was used to examine differences between stress levels in a breeding colony of rhesus macaques housed in either a traditional caging system or open-rooms. The leukocyte activation test measured the degree to which blood from the two treatment...

  5. Cage sizes for tamarins in the laboratory

    Contributor(s):: Prescott, M. J., Buchanan-Smith, H. M.

    Provision of adequate space for captive animals is essential for good welfare. It affects not only their behaviour but also determines whether there is sufficient room for appropriate environmental enrichment. Most importantly, appropriate cage size permits captive animals to be housed in...

  6. Comments from the AZA contraception advisory group on evaluating the suitability of contraceptive methods in golden-headed lion tamarins ( Leontopithecus chrysomelas )

    Contributor(s):: DeMatteo, K. E., Porton, I. J., Asa, C. S.

  7. Factors affecting the successful pairing of unfamiliar common marmoset ( Callithrix jacchus ) females: preliminary results

    Contributor(s):: Majolo, B., Buchanan-Smith, H. M., Morris, K.

    Laboratory primates are often housed in same-sex pairs to avoid single-housing and when breeding is to be prevented. However, pair formation is not without risks, as fights and injuries may occur. No data are available on pair formation in female common marmosets (C. jacchus), a species used...

  8. Feeding gum arabic to New World monkeys: species differences and palatability

    Contributor(s):: Herron, S., Price, E., Wormell, D.

    Members of the New World primate genera Callithrix and Cebuella have specializations for eating plant exudates. Exudates are also an important component of the diets of many other callitrichid species in the wild, especially at times of nutritional stress. Gum arabic is fed daily to all marmosets...

  9. Habituation, capture and relocation of Sykes monkeys ( Cercopithecus mitis albotorquatus ) on the coast of Kenya

    Contributor(s):: Moinde, N. N., Suleman, M. A., Higashi, H., Hau, J.

    The objective of this project was to collect scientific data to assist in the development of guidelines for the humane relocation of threatened and endangered arboreal non-human primate species. A troop of 31 Lowland Sykes monkeys (Cercopithecus mitis albotorquatus) was habituated to fruit bait...

  10. How tufted capuchin monkeys ( Cebus apella ) rank monkey chow in relation to other foods

    Contributor(s):: Addessi, E., Stammati, M., Sabbatini, G., Visalberghi, E.

    Captive primates are usually fed on monkey chow, a high-energy food designed to provide a complete and balanced diet for primates. In addition to the nutritional value of a food, its palatability, frequency of presentation in the daily diet and sensory stimulation may also be important for...

  11. Measuring gut passage times in small New World monkeys

    Contributor(s):: Price, E. C.

  12. Positive reinforcement training as enrichment for singly housed rhesus macaques ( Macaca mulatta )

    Contributor(s):: Baker, K. C., Bloomsmith, M. A., Neu, K., Griffis, C., Maloney, M.

    Positive reinforcement training is one component of behavioural management employed to improve psychological well-being. There has been regulatory promotion to compensate for restricted social housing in part by providing human interaction to singly caged primates, implying an efficacy standard...

  13. Presence of a privacy divider increases proximity in pair-housed rhesus monkeys

    Contributor(s):: Basile, B. M., Hampton, R. R., Chaudhry, A. M., Murray, E. A.

    Use of a privacy panel in the home cage of female pair-housed rhesus monkeys has been reported to increase time spent in close proximity and time spent in affiliative behaviours. In the current study we measured these behaviours in more diverse populations; including male-male and male-female...

  14. Re-assessing the reversibility of melengestrol acetate (MGA) implants in golden-headed lion tamarins ( Leontopithecus chrysomelas ): a comparison with golden lion tamarins ( L. rosalia )

    Contributor(s):: Vleeschouwer, K. de, Leus, K., Elsacker, L. van

    The reversibility and flexibility of contraceptive methods generally allow for improved genetic and demographic management of captive populations. Earlier studies have produced conflicting results regarding the restoration of reproduction after using melengestrol acetate (MGA) implants in...

  15. Selective breeding of primates for use in research: consequences and challenges

    Contributor(s):: Honess, P., Stanley-Griffiths, M. A., Narainapoulle, S., Naiken, S., Andrianjazalahatra, T.

    Primates are bred in captivity for a number of purposes, from zoo-based captive breeding programmes for conservation to breeding for biomedical research. In each case, breeding animals that are fit for purpose, either as viable candidates for reintroduction or as valid research models, has...

  16. Stability of breeding and non-breeding groups of golden-headed lion tamarins ( Leontopithecus chrysomelas )

    Contributor(s):: Vleeschouwer, K. de, Leus, K., Elsacker, L. van

    In Callitrichid primates, offspring remain in their natal group beyond the age of sexual maturity, increasing the group's inclusive fitness by cooperatively rearing their siblings. Contraception of the dominant female in these groups may alter the associated costs and benefits of this cooperative...

  17. Survival and adaptation of a released group of confiscated capuchin monkeys

    Contributor(s):: Suarez, C. E., Gamboa, E. M., Claver, P., Nassar-Montoya, F.

    One commonly used method of managing confiscated wild primates in Latin American countries is to release rehabilitated individuals back to their natural habitats. However, little information has been collected from confiscated animal releases, so no clear guidelines have been developed to measure...

  18. The humane control of captive marmoset and tamarin populations

    Contributor(s):: Sainsbury, A. W.

  19. Ethics and animal welfare in wild primates

    Contributor(s):: Oliveira, M. A. B. de

    The concept of 'ethics' is usually applied, among primates, to humans only. This article argues that it should also be applied to non-human primates. Brazil is the 'guardian' of the most rich and diverse - and threatened - fauna of non-human primates in the world. Of 103...