Individual study: Breeding the Japanese giant salamander at Asa Zoological Park
Kuwabara K., Suzuki N., Wakabayashi F., Ashikaga H., Inoue T. & Kobara J. (1989) Breeding the Japanese giant salamander at Asa Zoological Park. International Zoo Yearbook, 28, 22-31
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Captive breeding salamanders (including newts)
A replicated study in 1978–1988 of captive Japanese giant salamanders Andrias japonicas in a zoo in Hiroshima, Japan (Kuwabara et al. 1989) found that the salamanders bred successfully in captivity. Between one and three females produced eggs in each of the three breeding groups each year. A total of 36 egg masses were produced between 1979 and 1988 (336–2434 eggs/mass). Survival to hatching was approximately 60% (range: 0–97%). By 1988, there were 1,035 captive larvae and young. Males were observed eating eggs in the smaller enclosures. Between 1978 and 1983, three breeding groups were established with 2–4 males and three females. Groups were housed in two to four connected outdoor tanks (90 x 70 x 45 cm) with sand and water. Larvae were reared in separate outdoor tanks (65 x 38 x 15 cm).