Environmental enrichment in captive juvenile thornback rays, Raja clavata (Linnaeus 1758)
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In: Applied Animal Behaviour Science, Vol. 182, 09.2016, p. 86-93.
Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Environmental enrichment in captive juvenile thornback rays, Raja clavata (Linnaeus 1758)
AU - Greenway, Eleanor
AU - Jones, Katherine
AU - Cooke, Gavan
PY - 2016/9
Y1 - 2016/9
N2 - There are few studies investigating captive conditions for commonly kept public aquaria species. Here the thornback ray (Raja clavata) was used to determine preferred captive conditions via choice tests and behavioural observations. Substrate type, substrate colour, substrate depth, group size and refuge use were all used to assess usage, number of stereotypic behaviours and activity in captive born rays. Sand was the preferred choice of substrate which also brought fewer surface breaking behaviours (a possible stereotypic behaviour) compared to gravel or bare tanks. Lighter colours of sand were preferred, as were deeper depths whilst increasing group size increased possible stereotypic behaviours. Type of resting behaviour (horizontal vs vertical) also differed within experiments − rays switched from horizontal to vertical resting, on the side of the tank when using gravelled versus sandy areas of the tank. The rays in this study appeared not to use refuges. Very few published studies have focused on what aquatic animals want, here we use preference tests, which are a useful way of determining what the animal wants, and can help aquarists provide the best conditions for captive thornback rays.
AB - There are few studies investigating captive conditions for commonly kept public aquaria species. Here the thornback ray (Raja clavata) was used to determine preferred captive conditions via choice tests and behavioural observations. Substrate type, substrate colour, substrate depth, group size and refuge use were all used to assess usage, number of stereotypic behaviours and activity in captive born rays. Sand was the preferred choice of substrate which also brought fewer surface breaking behaviours (a possible stereotypic behaviour) compared to gravel or bare tanks. Lighter colours of sand were preferred, as were deeper depths whilst increasing group size increased possible stereotypic behaviours. Type of resting behaviour (horizontal vs vertical) also differed within experiments − rays switched from horizontal to vertical resting, on the side of the tank when using gravelled versus sandy areas of the tank. The rays in this study appeared not to use refuges. Very few published studies have focused on what aquatic animals want, here we use preference tests, which are a useful way of determining what the animal wants, and can help aquarists provide the best conditions for captive thornback rays.
U2 - 10.1016/j.applanim.2016.06.008
DO - 10.1016/j.applanim.2016.06.008
M3 - Article
VL - 182
SP - 86
EP - 93
JO - Applied Animal Behaviour Science
JF - Applied Animal Behaviour Science
SN - 0168-1591
ER -