Postrelease movements of captive-reared Ozark hellbenders (Cryptobranchus alleganiensis bishopi)
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Published source details
Bodinof C.M., Briggler J.T., Junge R.E., Beringer J., Wanner M.D., Schuette C.D., Ettling J., Gitzen R.A. & Millspaugh J.J (2012) Postrelease movements of captive-reared Ozark hellbenders (Cryptobranchus alleganiensis bishopi). Herpetologica, 68, 160-173.
Published source details Bodinof C.M., Briggler J.T., Junge R.E., Beringer J., Wanner M.D., Schuette C.D., Ettling J., Gitzen R.A. & Millspaugh J.J (2012) Postrelease movements of captive-reared Ozark hellbenders (Cryptobranchus alleganiensis bishopi). Herpetologica, 68, 160-173.
Actions
This study is summarised as evidence for the following.
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Head-start amphibians for release Action Link |
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Head-start amphibians for release
A replicated study in 2008–2009 of Ozark hellbenders Cryptobranchus alleganiensis bishop in Missouri, USA (Bodinof et al. 2012) found that 64% of captive-reared animals survived up to a year following release. Five deaths occurred within 30 days of release, three within 50–92 days and five within 126–369 days. Most hellbenders stayed within a small area (90–94%), with only 7% moving over 20 m/day. Home ranges varied widely in the first 4–7 months after release (51–987 m2), but were significantly smaller during the following six months (11–31 m2). Of those that were known to have established a home range, 69% dispersed less than 50 m from the release point. Overall, 77% had entered their core home range within 21 days of release. Thirty-six hellbenders were captive-reared from eggs and were released back to the two original sites. Animals were radio-tracked from May 2008 to August 2009.
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