Efficacy of hand-broadcast application of diphacinone bait for rodent control in Hawaiian montane forests.

dc.contributor.author Spurr, Eric
dc.contributor.author Foote, David
dc.contributor.author Lindsey, Gerald
dc.contributor.author Forbes Perry, Charlotte
dc.date.accessioned 2016-01-25T19:43:58Z
dc.date.available 2016-01-25T19:43:58Z
dc.date.issued 2016-01-25
dc.description.abstract Introduced black rats (Rattus rattus), Polynesian rats (R. exulans), and Norway rats (R. norvegicus) impact insular bird, plant, and invertebrate populations worldwide. We investigated the efficacy of hand-broadcast application of Ramik® Green containing 0.005% diphacinone for rodent control in paired 4-ha treatment and non-treatment plots in both wet and mesic forest in Hawaiʽi. Radio telemetry of black rats, the predominant species, indicated 100% mortality in both treatment plots within about one week of bait application. Live trapping and non-toxic census bait block monitoring two to four weeks after each of 12 repeat bait applications in the wet forest, and three repeat bait applications in the mesic forest, indicated rat abundance was reduced on average by 84–88%. However, reinvasion could have occurred within this time. Rat populations in the treatment plots usually recovered to pre-poison levels within two to five months. House mice (Mus musculus), Indian mongooses (Herpestes auropunctatus), and feral cats (Felis catus) also ate bait or other animals that had eaten bait. This study demonstrates the efficacy of ground-based broadcast toxicant baits for the control of rats in Hawaiian montane wet forests.
dc.format.extent 24
dc.identifier.uri http://hdl.handle.net/10790/2621
dc.language.iso en-US
dc.relation.ispartofseries Technical Report HCSU - 043
dc.subject introduced species
dc.subject rodent control
dc.title Efficacy of hand-broadcast application of diphacinone bait for rodent control in Hawaiian montane forests.
dc.type Journal
dc.type.dcmi Text
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