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Secondary poisoning risk for encapsulated sodium nitrite, a new tool for possum control

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dc.contributor.author Shapiro, Lee en
dc.contributor.author Blackie, Helen en
dc.contributor.author Arthur, D. en
dc.contributor.author Ross, James G. en
dc.contributor.author Eason, Charles en
dc.date.accessioned 2018-04-13T04:27:55Z
dc.date.available 2017-11-27 en
dc.date.issued 2018 en
dc.date.submitted 2017-08-16 en
dc.identifier.citation Shapiro, L., Blackie, H., Arthur, D., Ross, J., & Eason, C. (2018). Secondary poisoning risk for encapsulated sodium nitrite, a new tool for possum control. New Zealand Journal of Ecology, 42(1), 65-73. doi:10.20417/nzjecol.42.6 en
dc.identifier.issn 1177-7788 en
dc.identifier.uri https://hdl.handle.net/10182/9223
dc.description.abstract Brushtail possums (Trichosurus vulpecula) present an ongoing threat to New Zealand’s environment and economy. Research into additional control techniques is vital to ensure that a variety of efficient tools are available to help achieve population suppression. Encapsulated sodium nitrite (NaNO2) has been developed in New Zealand as a new toxin for possum and feral pig (Sus scrofa) control. Its toxic effects at high doses are mediated through the induction of methaemoglobinaemia, a condition in which the carrying capacity of oxygen in red blood cells is reduced. This study investigated the potential secondary poisoning risks associated with NaNO2. Secondary poisoning risks were assessed for dogs, cats and chickens in small-scale trials. Trial groups for each species consisted of two treatment groups with four individuals per group and one non-treatment group with two individuals. For 6 consecutive days, the treatment groups of dogs, cats and chickens were fed entire or partial carcasses from possums lethally poisoned with paste bait containing encapsulated NaNO2. Individuals in each group were observed continuously for 3 hours following each daily feeding and blood samples were taken from dogs and cats. Individuals were observed for obvious physiological signs of NaNO2 poisoning and symptoms of methaemoglobinaemia specific to dogs, cats and chickens. None of the dogs, cats or chickens displayed any obvious physiological signs of poisoning or symptoms of methaemoglobinaemia. Blood chemistry and haematology parameters measured for dogs and cats were either within the range considered normal or when outside this range comparable levels were also recorded in the control group. No changes in histology relating to NaNO2 intoxication were observed in dogs or cats after being fed carcasses, minced meat, vital organs or stomachs of possums poisoned with NaNO2. Therefore, the secondary poisoning risk appears to be minimal. en
dc.format.extent 65-73 en
dc.language.iso en en
dc.publisher New Zealand Ecological Society en
dc.relation The original publication is available from - New Zealand Ecological Society - https://doi.org/10.20417/nzjecol.42.6 en
dc.relation.uri https://doi.org/10.20417/nzjecol.42.6 en
dc.rights © New Zealand Ecological Society en
dc.subject possum control en
dc.subject encapsulated sodium nitrite en
dc.subject methaemoglobinaemia en
dc.subject NaNO2 en
dc.subject non-targets en
dc.subject secondary poisoning en
dc.subject Trichosurus vulpecula en
dc.subject Ecology en
dc.title Secondary poisoning risk for encapsulated sodium nitrite, a new tool for possum control en
dc.type Journal Article
lu.contributor.unit Lincoln University en
lu.contributor.unit Faculty of Agriculture and Life Sciences en
lu.contributor.unit Pest-Management and Conservation en
lu.contributor.unit Research Management Office en
lu.contributor.unit /LU/Research Management Office/2018 PBRF Staff group en
dc.identifier.doi https://doi.org/10.20417/nzjecol.42.6 en
dc.subject.anzsrc 050211 Wildlife and Habitat Management en
dc.subject.anzsrc 0602 Ecology en
dc.relation.isPartOf New Zealand Journal of Ecology en
pubs.issue 1 en
pubs.organisational-group /LU
pubs.organisational-group /LU/Agriculture and Life Sciences
pubs.organisational-group /LU/Agriculture and Life Sciences/ECOL
pubs.organisational-group /LU/Research Management Office
pubs.organisational-group /LU/Research Management Office/2018 PBRF Staff group
pubs.publication-status Published en
pubs.volume 42 en
dc.identifier.eissn 0110-6465 en
lu.identifier.orcid 0000-0001-7413-4704


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