Size related survival of headstarted redbelly turtles (Pseudemys rubriventris) in Massachusetts
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Published source details
Haskell A., Graham T.E., Griffin C.R. & Hestbeck J.B. (1996) Size related survival of headstarted redbelly turtles (Pseudemys rubriventris) in Massachusetts. Journal of Herpetology, 30, 524-527.
Published source details Haskell A., Graham T.E., Griffin C.R. & Hestbeck J.B. (1996) Size related survival of headstarted redbelly turtles (Pseudemys rubriventris) in Massachusetts. Journal of Herpetology, 30, 524-527.
Actions
This study is summarised as evidence for the following.
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Head-start wild-caught reptiles for release: Tortoises, terrapins, side-necked & softshell turtles Action Link |
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Translocate adult or juvenile reptiles: Tortoises, terrapins, side-necked & softshell turtles Action Link |
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Head-start wild-caught reptiles for release: Tortoises, terrapins, side-necked & softshell turtles
A controlled study in 1979–1988 in one large pond in Massachusetts, USA (Haskell et al. 1996) found that released head-started northern redbelly turtles Pseudemys rubriventris had higher survival than translocated, wild hatchlings, and that larger head-started turtles had higher survival than smaller ones. Annual survival of head-started turtles (36–100% of 12, 13 and 38 turtles released/year) was higher than for translocated hatchlings (0 of 15, 0%). Larger head-started turtles had higher annual survival in the first year following release (<65 mm: 36%; 66–95 mm: 66%; ≥96 mm: 92%), but in year 2–3 after releases survival was similar for all sizes (60–100%). Three of five additional turtles raised in captivity for one year were re-captured 13 years later. Hatchling turtles were collected from a nearby pond and raised in a head-starting facility for around 9–12 months. In 1979–1988, a total of 68 head-started turtles were released (5 in 1979, 62 in 1985–1988), and in 1982, fifteen wild hatchlings were translocated immediately after capture. In 1985–1992, turtles were trapped annually over a 4–6-week period from May–June or August–September using basking traps and fyke nets.
(Summarised by: Maggie Watson, William Morgan)
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Translocate adult or juvenile reptiles: Tortoises, terrapins, side-necked & softshell turtles
A study in 1982–1988 in one large pond in Massachusetts, USA (Haskell et al. 1996) found that no translocated northern redbelly turtle Pseudemys rubriventris hatchlings survived, whereas some head-started turtles survived at least 3–13 years. Zero of 15 translocated hatchlings were re-captured. Larger head-started turtles had the highest annual survival in the first year following release (<65 mm: 36%; 66–95 mm: 66%; ≥96 mm: 92%), but annual survival in year 2–3 following release were similar for all sizes (60–100%). In 1982, fifteen hatchlings were translocated immediately after capture from a nearby pond. In 1979–1988, sixty-eight head-started turtles were released into the same location. Extensive trapping was carried out for 10 years following the release of the translocated hatchlings.
(Summarised by: Maggie Watson, William Morgan)
Output references
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