Relative effectiveness of trapping and hand-capture for controlling invasive cane toads (<i>Rhinella marina</i>)

Müller, Benjamin; Schwarzkopf, Lin

doi:10.1080/09670874.2017.1363443

Cited by 14 publications

(10 citation statements)

References 36 publications

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“…Cage traps using ultraviolet light as a lure, which attracts invertebrates, capture toads 46 . Our results suggest that trapping may be more effective during darker lunar phases (corroborated by 47 ), and in urban areas shaded from ALAN, or in peri-urban and rural areas.…”

Section: Discussionmentioning

confidence: 99%

Impacts of artificial light on food intake in invasive toads

Komine

Koike

Schwarzkopf

2020

Sci Rep

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Artificial light at night (ALAN) is a major form of anthropogenic disturbance. ALAN attracts nocturnal invertebrates, which are a food source for nocturnal predators, including invasive species. Few studies quantify the effects of increased food availablity by ALAN on invasive vertebrate predators, and enhancement of food intake caused by ALAN may also be influenced by various environmental factors, such as proximitity to cities, moon phase, temperature, rainfall and wind speed. Revealing the potential impacts on invasive predators of ALAN-attracted invertebrates, and the influence of other factors on these effects, could provide important insights for the management of these predators. We constructed and supplied with artificial light field enclosures for invasive toads, and placed them at locations with different levels of ambient light pollution, in northeastern Australia. In addition, we determined the effect of rainfall, temperature, wind speed, and lunar phase on food intake in toads. We found that ALAN greatly increased the mass of gut contents of invasive toads compared to controls, but that the effect was increased in dark lunar phases, and when there were low ambient light pollution levels. Effects of rainfall, temperature and wind speed on food intake were comparatively weak. To avoid providing food resources to toads, management of ALAN in rural areas, and during dark lunar phases may be advisable. On the contrary, to effectively capture toads, trapping using lights as lures at such times and places should be more successful.

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Section: Discussionmentioning

confidence: 99%

Impacts of artificial light on food intake in invasive toads

Komine

Koike

Schwarzkopf

2020

Sci Rep

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“…Motion activated video cameras were deployed next to a prototype acoustic lure [4] which included an LED ultraviolet light insect lure, and was conceived by the Vertebrate Ecology Lab located at the James Cook University campus in Townsville, Queensland, Australia, with their industry partner Animal Control Technologies Australia. Cane toads were identified in 33 and 12 video clips with plain and complex backgrounds, respectively ( Fig.…”

Section: A Datasetmentioning

confidence: 99%

“…1). Although frogs have not appeared in bycatch for these traps [4], native frogs were selected as wildlife to test the visual recognition system because they resemble toads, and could cause confusion for automated recognition. Frog species were selected for their abundance in the local Townsville area, or their resemblance to toads, or both.…”

Section: A Datasetmentioning

confidence: 99%

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In Situ Cane Toad Recognition

Konovalov

Jahangard

Schwarzkopf

2018

2018 Digital Image Computing: Techniques and Applications (DICTA)

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Cane toads are invasive, toxic to native predators, compete with native insectivores, and have a devastating impact on Australian ecosystems, prompting the Australian government to list toads as a key threatening process under the Environment Protection and Biodiversity Conservation Act 1999. Mechanical cane toad traps could be made more native-fauna friendly if they could distinguish invasive cane toads from native species. Here we designed and trained a Convolution Neural Network (CNN) starting from the Xception CNN. The XToadGmp toadrecognition CNN we developed was trained end-to-end using heat-map Gaussian targets. After training, XToadGmp required minimum image pre/post-processing and when tested on 720x1280 shaped images, it achieved 97.1% classification accuracy on 1863 toad and 2892 not-toad test images, which were not used in training.

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“…Most conservation managers or agencies have little to no tradition of publishing in the refereed scientific literature, so, for the most part, successes and failures of invasive species are found in grey literature sources (Simberloff 2009). Even more daunting is the fact that among known eradication/management programs cited in the literature, few concern reptiles (Campbell III et al 1999;Toda et al 2010) or amphibians (Miller 2006;Greenlees et al 2018), and hardly any evaluate effectiveness of their control techniques (Rodda et al 1999;Davis et al 2015;Haramura et al 2017;Muller and Schwarzkopf 2017). The main consequence of this "nothing can be done" approach is the lack of evidence for successful programs (Simberloff 2009).…”

Section: Considerations For Management and Control Measures For Intromentioning

confidence: 99%

A review of the introduced herpetofauna of Mexico and Central America, with comments on the effects of invasive species and biosecurity methodology

Johnson¹,

González-Solís²,

Fucsko³

et al. 2021

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Among the principal causes producing detrimental effects on global biodiversity are introductions of alien species. Very few attempts to control introduced amphibians and reptiles in Middle America (Mexico and Central America) can be identified, so listings are provided for 24 exotic species, 16 translocated species, and 11 species that were removed from the introduced species listing because of lack of substantiating evidence that they are from established populations. Biosecurity methods are also identified that can be applied for preventing, controlling, and managing introduced and especially invasive species.

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Relative effectiveness of trapping and hand-capture for controlling invasive cane toads (Rhinella marina)

Cited by 14 publications

References 36 publications

Impacts of artificial light on food intake in invasive toads

Impacts of artificial light on food intake in invasive toads

In Situ Cane Toad Recognition

A review of the introduced herpetofauna of Mexico and Central America, with comments on the effects of invasive species and biosecurity methodology

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