2019
DOI: 10.1007/s00359-019-01363-z
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Not just going with the flow: foraging ants attend to polarised light even while on the pheromone trail

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Cited by 21 publications
(23 citation statements)
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“…Column head foragers in all conditions appeared to rely heavily on their path integrator, orienting in the direction expected if following a vector to the nest entrance and showed no evidence of being directed to the column head. Zero vector foragers showed no evidence of using terrestrial cues or other local cues to return to the column head or nest, instead orienting consistent with backtracking behaviour (Wystrach et al 2013;Freas et al 2019c).…”
Section: Resultsmentioning
confidence: 61%
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“…Column head foragers in all conditions appeared to rely heavily on their path integrator, orienting in the direction expected if following a vector to the nest entrance and showed no evidence of being directed to the column head. Zero vector foragers showed no evidence of using terrestrial cues or other local cues to return to the column head or nest, instead orienting consistent with backtracking behaviour (Wystrach et al 2013;Freas et al 2019c).…”
Section: Resultsmentioning
confidence: 61%
“…V. pergandei foragers also actively attend to both the sun's position and the overhead polarisation pattern while returning in the column (Freas et al 2019b). Finally, backtracking, a behaviour largely dependent on foragers running off their remaining vector (Wystrach et al 2013), is exhibited in this species only when foragers have completed over 75% of the column distance, suggesting the maintenance of a distance estimate in the column (Freas et al 2019c;Plowes et al 2019). Given these findings, fan and column foragers likely accumulate two distinct vectors during their foraging trip, a column-vector and a fan-vector.…”
Section: Electronic Supplementary Materialsmentioning
confidence: 88%
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“…In our simulation, after discovering the food, inbound foragers begin a random walk that is biased toward higher concentrations of trail pheromone and also biased toward the direction of the nest entrance. The biological plausibility of this inbound turn is well-supported by a variety of mechanisms used in ants to navigate home from foraging trips, including the path integration of steps (Heinze et al, 2018 ), location of sun and moon in the sky (Wehner and Müller, 2006 ; Freas et al, 2017 , 2019a ), magnetoreception (Freas et al, 2019b ), recognition of remembered visual scenes (Baddeley et al, 2012 ; Zeil et al, 2014 ), interactions with nestmates on the trail, non-pheromonal olfactory cues (Steck, 2012 ), the geometry of the trail network (Collett and Waxman, 2005 ; Czaczkes et al, 2015b ), and so on. Because successful foragers deposit trail pheromone on their inbound trip, they act to reinforce extant pheromone trails.…”
Section: Methodsmentioning
confidence: 99%