Survival, dispersal, and home-range establishment of reintroduced captive-bred puaiohi, Myadestes palmeri
Biological Conservation
By: E.J. Tweed, J.T. Foster, B.L. Woodworth, P. Oesterle, C. Kuehler, A.A. Lieberman, A.T. Powers, K. Whitaker, W.B. Monahan, J. Kellerman, and T. Telfer
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Abstract
We monitored the survival, dispersal, and home-range establishment of captive-bred, reintroduced puaiohi Myadestes palmeri, a critically endangered thrush endemic to the island of Kauai. Fourteen captive-bred, juvenile birds were released from hacktowers in January-February 1999 and monitored for 8-10 weeks using radiotelemetry. All 14 birds (100%) survived to 56 days post-release. Two birds (14.3%) dispersed greater than 3 km from release site within 1 day of release. The remaining birds settled within 1 week and established either temporary home-ranges (mean area = 7.9??12.0 ha, range 0.4-31.9) or breeding home-ranges (mean area 1.2??0.34 ha, range 0.8-1.6). Temporary home ranges were abandonded by the beginning of the breeding season, and ultimately 6 of the 14 birds (43%) established breeding home ranges in the release area. The high survival rate bodes well for establishing additional populations through captive breeding and release; however, the 57% dispersal rate out of the target area means that several releases of birds may be necessary in order to repopulate a given drainage. Furthermore, observed dispersal and gene flow between the reintroduced and wild populations have important implications for management of the captive flock. Published by Elsevier Science Ltd.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Survival, dispersal, and home-range establishment of reintroduced captive-bred puaiohi, Myadestes palmeri |
| Series title | Biological Conservation |
| DOI | 10.1016/S0006-3207(02)00175-1 |
| Volume | 111 |
| Issue | 1 |
| Year Published | 2003 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Biological Conservation |
| First page | 1 |
| Last page | 9 |
| Google Analytic Metrics | Metrics page |