Study

San Diego Zoo release more Southern California Mountain yellow-legged frogs

  • Published source details Medlin D.D. (2011) San Diego Zoo release more Southern California Mountain yellow-legged frogs. Amphibian Ark Newsletter, 17, 12

Actions

This study is summarised as evidence for the following.

Action Category

Release captive-bred frogs

Action Link
Amphibian Conservation

Captive breeding frogs

Action Link
Amphibian Conservation
  1. Release captive-bred frogs

    A replicated study in 2009–2011 at San Diego Zoo, California, USA (Medlin 2011) found that mountain yellow-legged frog Rana muscosa tadpoles survived for at least the first few months after release. All tadpoles survived in acclimation cages prior to release. In 2011, a number of tadpoles released that year survived at least until the autumn. In 2006, 82 tadpoles were rescued from a drying stream and breeding was attempted from 2009. In 2010, 30 eggs and 36 tadpoles and in 2011, 300 eggs and 300 tadpoles were released into screen cages in a stream within a reserve. Tadpoles were kept in cages to acclimatize for different periods of time before release. Regular monitoring was undertaken.

     

  2. Captive breeding frogs

    A replicated study in 2009–2011 at San Diego Zoo, California, USA (Medlin 2011) found that mountain yellow-legged frogs Rana muscosa reproduced in captivity. Breeding success improved from 2009 to 2011 as frogs matured and with winter cooling to replicate natural conditions. In 2006, 82 tadpoles were rescued from a drying stream. Breeding was attempted from 2009. In 2010, half of the frogs and in 2011 all frogs were kept at 4°C for 2–3 months over winter. In 2010–2011, 330 eggs and 336 tadpoles were released into a stream. Tadpoles were kept in cages to acclimatize for different periods of time before release.

     

Output references

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