Return to the wild: Translocation as a tool in conservation of the Desert Tortoise (Gopherus agassizii)
By K. J. Field, C. Tracy, P. Medica, R. Marlow, P. S. Corn. Biological Conservation, 2007
82 citations recorded by the source corpus.
Abstract Translocation could be used as a tool in conservation of the threatened Mojave Desert Tortoise ( Gopherus agassizii ) by moving individuals from harm’s way and into areas where they could contribute to conservation of the species. Numerous factors may affect the success of translocations, including the conditions experienced by tortoises in holding facilities while awaiting translocation. The tortoises available for our translocation study had been provided supplemental water during their years spent in a captive holding facility, potentially inducing carelessness in water conservation. In addition to generally investigating the efficacy of translocation, we compared the effects of continuing with the effects of ceasing the holding facility’s water supplementation regimen. After exposure to one of the two water regimens, all tortoises were given the opportunity to hydrate immediately prior to release. We examined behavior, body mass, carapace length, movement, and mortality of tortoises for two activity seasons following release to the wild. Water supplementation was correlated with high rates of carapace growth and distant movements by males after release. Lengthy movements following translocation may be problematic for conservation planning, but this should be evaluated in light of the goals and circumstances of each translocation project. Although the mortality rate was 21.4% in 1997, data suggest that drought conditions at the site rather than the translocation itself negatively affected the tortoises. None of the tortoises died during their second season at the site. Our results indicate that translocation should be considered a useful tool in conservation of the Desert Tortoise.
Subfields: Global and Planetary Change, Nature and Landscape Conservation
View Paper: https://www.semanticscholar.org/paper/5580af820bd12f1575474aaaeb1c572656673d9b
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In Global and Planetary Change
In Nature and Landscape Conservation
Citations in the corpus
- Assessing translocation outcome: Comparing behavioral and physiological aspects of translocated and resident African elephants (Loxodonta africana) (2009, unknown): “Components of body condition such as body mass (Molony et al., 2006; Field et al., 2007) or pregnancy rate (Clifford et al., 2007), are indicators of an animal's energy reserves and reproductive ability and are therefore directly linked to survival and to the ability of a population to become…”
- Effects of subsidized predators, resource variability, and human population density on desert tortoise populations in the Mojave Desert, USA. (2010, background): “Other hypothesized mechanisms for heightened predation levels include increased movements of tortoises that were translocated (Nussear 2004, Field et al. 2007), potential unavailability or unfamiliarity with locations of cover sites, food and water, and the attraction of predators to areas with…”