2014
DOI: 10.5070/v426110340
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Detecting Rodents in the Presence of Land Crabs: Indicator Blocks Outperform Standard Rodent Detection Devices at Palmyra Atoll

Abstract: Indicator blocks, also called "chew-tag-cards," made from a small square of corrugated plastic partially filled with an attractant, are an established rodent detection tool used in many different settings. Here, we discuss the utility of indicator blocks in detecting the presence of rats at Palmyra Atoll National Wildlife Refuge (Palmyra) in the Northern Line Islands. The detection of invasive rodents, in this case black rats, can be challenging in the presence of non-target species that may interfere with det… Show more

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Cited by 2 publications
(3 citation statements)
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“…Overall, these corrugated plastic pieces attracted more ants. Other studies also reported nontarget animals, such as ants (Collier, 2014) and land crabs (Oberg et al, 2014). Only one chew card presented evidence of rat presence on Lee Rocks.…”
Section: Discussionmentioning
confidence: 95%
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“…Overall, these corrugated plastic pieces attracted more ants. Other studies also reported nontarget animals, such as ants (Collier, 2014) and land crabs (Oberg et al, 2014). Only one chew card presented evidence of rat presence on Lee Rocks.…”
Section: Discussionmentioning
confidence: 95%
“…We determined the presence of potential predators on each island using chew cards (Oberg et al, 2014), tracking tunnels (Blackwell et al, 2002), and cameras (Rendall et al, 2014). However, we did not use all methods every year.…”
Section: Predator Presence Assessmentmentioning
confidence: 99%
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