Relocate nests/eggs to a hatchery: Tuatara
Overall effectiveness category No evidence found (no assessment)
Number of studies: 0
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Background information and definitions
Reptile nests may be relocated away from specific threats (e.g. egg collecting, flooding, erosion, predation, or being crushed on roads) and reburied in an organised ‘hatchery’. Hatcheries consist of a defined location on or near the nesting beach, well above the high tide line, that is often fenced and patrolled. Nests/eggs collected from the beach are then reburied within the hatchery, where they can be closely monitored.
Burying a potentially large number of nests/eggs within a relatively small area may present a number of risks, and the consequences of disturbances such as flooding or poaching could be particularly severe. Other environmental variables at the hatchery location (e.g. temperature and humidity) may also impact on the sex, size, shape, colour, behaviour, movement ability and post-hatching growth of the hatchlings (Warner & Andrews 2002, Booth et al. 2006), and should be carefully considered when selecting the location.
Due to the number of studies found, this action has been split by species group, though no studies were found for amphisbaenians. See here for: Sea turtles; Tortoises, terrapins, side-necked & softshell turtles; Snakes & lizards or Crocodilians.
For studies that discuss moving nests/eggs to other locations on the beach, but not to a hatchery, see Relocate nests/eggs to a nearby natural setting (not including hatcheries), and for those that discuss the effects of relocating eggs into artificial settings, including into polystyrene boxes and other containers, see Relocate nests/eggs for artificial incubation.
See also: Alter incubation temperatures to achieve optimal/desired sex ratio.
Booth D.T. (2006) Influence of incubation temperature on hatchling phenotype in reptiles. Physiological and Biochemical Zoology, 79, 274–281.
Warner D.A. & Andrews R.M. (2002) Laboratory and field experiments identify sources of variation in phenotypes and survival of hatchling lizards. Biological Journal of the Linnean Society, 76, 105–124.
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This Action forms part of the Action Synopsis:Reptile Conservation
Reptile Conservation - Published 2021