Indirect impacts of invasive cane toads (Bufo marinus) on nest predation in pig-nosed turtles (Carettochelys insculpta)
By J. Doody, B. Green, R. A. Sims, David W. Rhind, P. West, David Steer. 2006
122 citations recorded by the source corpus.
The cane toad (Bufo marinus) was introduced into Australia in 1935. Because this toxic frog is novel to the Australian fauna, its introduction has impacted native fauna in a variety of ways. We anticipated a severe decline in the yellow-spotted monitor lizard (Varanus panoptes) associated with the arrival of cane toads along the Daly River, Northern Territory, and predicted a simultaneous impact on nest predation in the pig-nosed turtle (Carettochelys insculpta) because the lizard is the chief predator of C. insculpta eggs at the site. We surveyed for monitors and cane toads for five years at two sites before and after the arrival of cane toads, and surveyed for turtle nest predation for three years before, and one year after, the arrival of the toads. Collectively, our data and observations, combined with unpublished reports, indicate that: (1) cane toads arrived at our study sites during the wet seasons of 2003–04 and 2004–05; (2) the lizard V. panoptes readily succumbs to cane toad toxins; (3) . panoptes has experienced a marked decline in relative population numbers coincident with the arrival of the toads at the site; and (4) V. panoptes has been reduced to such low numbers that it is currently no longer a significant predator of pig-nosed turtle eggs.
Subfields: Global and Planetary Change, Nature and Landscape Conservation, Virology
View Paper: https://www.semanticscholar.org/paper/3f82da0ae539b776b0b7dde5b572e4d15c0bb7c7
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In Global and Planetary Change
In Nature and Landscape Conservation
Citations in the corpus
- Impacts from Invasive Reptiles and Amphibians (2015, background): “Loss of predatory monitor lizards to cane toad (Rhinella marina) poisoning has released some native species from predation, resulting in a 20% increase in reproductive output for one riverine turtle (Doody et al. 2006) and major population increases in a syntopic lizard (Doody et al.”
- Modern approaches for the biological control of vertebrate pests: An Australian perspective (2010, background): “toads’ progress has had significant impacts on biodiversity, causing severe declines in populations of anurophagous native predators such as northern quolls (Burnett, 1997; Oakwood, 2003), varanid lizards (Doody et al., 2006; Griffiths and McKay, 2007), elapid snakes (Phillips et al.”
- Population‐level declines in Australian predators caused by an invasive species (2009, background): “A decrease in egg predation rates byV. panoptes following the arrival of B. marinus has been demonstrated for the pig-nosed turtle Carettochelys insculpta (Doody et al., 2006).”
- Predicting establishment success for alien reptiles and amphibians: a role for climate matching (2009, background): “…extinctions or declines of native prey species (Fritts and Rodda 1998; Karube and Suda 2004; Greenlees et al. 2006), poisoning of native predators (Doody et al. 2006a, b, competitive displacement (Boland 2004; Cole et al. 2005), disease transmission (Daszak et al. 1999; Garner et al. 2006),…”