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.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1-9 |
| Number of pages | 9 |
| Journal | Biological Conservation |
| Volume | 111 |
| Issue number | 1 |
| DOIs | |
| State | Published - May 2003 |
| Externally published | Yes |
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Keywords
- Captive-bred
- Dispersal
- Home-range
- Puaiohi
- Reintroduction
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Ecology
- Nature and Landscape Conservation
Cite this
Survival, dispersal, and home-range establishment of reintroduced captive-bred puaiohi, Myadestes palmeri. / Tweed, Erik J.; Foster, Jeffrey T; Woodworth, Bethany L.; Oesterle, Paul; Kuehler, Cynthia; Lieberman, Alan A.; Powers, A. Tracey; Whitaker, Kristin; Monahan, William B.; Kellerman, Jherime; Telfer, Tom.
In: Biological Conservation, Vol. 111, No. 1, 05.2003, p. 1-9.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Survival, dispersal, and home-range establishment of reintroduced captive-bred puaiohi, Myadestes palmeri
AU - Tweed, Erik J.
AU - Foster, Jeffrey T
AU - Woodworth, Bethany L.
AU - Oesterle, Paul
AU - Kuehler, Cynthia
AU - Lieberman, Alan A.
AU - Powers, A. Tracey
AU - Whitaker, Kristin
AU - Monahan, William B.
AU - Kellerman, Jherime
AU - Telfer, Tom
PY - 2003/5
Y1 - 2003/5
N2 - 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.
AB - 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.
KW - Captive-bred
KW - Dispersal
KW - Home-range
KW - Puaiohi
KW - Reintroduction
UR - http://www.scopus.com/inward/record.url?scp=0037408644&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037408644&partnerID=8YFLogxK
U2 - 10.1016/S0006-3207(02)00175-1
DO - 10.1016/S0006-3207(02)00175-1
M3 - Article
AN - SCOPUS:0037408644
VL - 111
SP - 1
EP - 9
JO - Biological Conservation
JF - Biological Conservation
SN - 0006-3207
IS - 1
ER -