An Efficient Method for the Euthanasia of Cane Toads (Rhinella marina) under Northern Australian Field Conditions

Winston R Kay; Peter R Mawson

doi:10.3390/ani11082239

An Efficient Method for the Euthanasia of Cane Toads (Rhinella marina) under Northern Australian Field Conditions

Animals (Basel). 2021 Jul 29;11(8):2239. doi: 10.3390/ani11082239.

Authors

Winston R Kay¹, Peter R Mawson²

Affiliations

¹ Species and Communities Branch, Department of Biodiversity, Conservation and Attractions, South Perth, WA 6151, Australia.
² Perth Zoo Science, Department of Biodiversity, Conservation and Attractions, South Perth, WA 6151, Australia.

Abstract

The euthanasia of cane toads under field conditions presents a number of logistical and animal welfare challenges. One recommended method of control involves the use of carbon dioxide in plastic bags. This paper describes the minimum amount of time (4 h) required to efficiently euthanase toads with a carbon dioxide concentration of 4.96% under field conditions experienced in northern Australia. Discussion is also provided on the issues of safe disposal of biological and plastic waste associated with the application of this method.

Keywords: Rhinella marina; cane toad; euthanasia.