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Providing evidence to improve practice

Individual study: Breeding the Mallorcan midwife toad Alytes muletensis in captivity

Published source details

Tonge S.J. & Bloxam Q.M.C. (1989) Breeding the Mallorcan midwife toad Alytes muletensis in captivity. International Zoo Yearbook, 28, 45-53


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Captive breeding Mallorcan midwife toads Amphibian Conservation

A replicated study in 1985–1988 of Mallorcan midwife toads Alytes muletensis at Jersey Zoo, UK (Tonge & Bloxam 1989) found that toads bred successfully in captivity. No breeding occurred in the first two years. However, in the third year, 17 egg clutches were produced, with an average of 12 eggs (range: 9–15). Three clutches dropped by the males were not successfully maintained artificially. Most eggs hatched and the first six clutches had metamorphosed by October 1988. The average survival to metamorphosis of those clutches was 85% (range: 22–100%). From 1985, six to 14 toads were housed in two glass tanks (1 x 0.6 x 1 m) in an unheated room (7–30°C). Tanks contained rocks, branches, tiles and a small pond and were misted to prevent drying. In April 1988, six toads were moved to an outdoor tank (5–12°C), but were returned indoors in May. Tadpoles and toadlets were reared in separate tanks.