Do leaf-cutter ants Atta colombica obtain their magnetic sensors from soil?

Andre J. Riveros, Darci M. S. Esquivel, Eliane Wajnberg, Robert B. Srygley

Resultado de la investigación: Contribución a RevistaArtículo

4 Citas (Scopus)

Resumen

How animals sense, process, and use magnetic information remains elusive. In insects, magnetic particles are candidates for a magnetic sensor. Recent studies suggest that the ant Pachycondyla marginata incorporates iron-containing particles from soil. We used leaf-cutter ants Atta colombica to test whether soil contact is necessary for developing a functional magnetic compass. A. colombica is the only invertebrate known to calculate a path-integrated home vector using a magnetic compass. Here, we show that A. colombica requires contact with soil to incorporate magnetic particles that can be used as a magnetic compass; yet, we also show that ants can biosynthesize magnetic particles. Workers from a soil-free colony ignored a 90° shift in the horizontal component of the geomagnetic field, yet oriented homeward despite the occlusion of any geocentric cues. In contrast, workers from a soil-exposed colony oriented to an intermediate direction between their true and subjective home in the shifted field. Homeward orientations under shifted fields suggest that ants calculated a path-integrated vector using proprioceptive information. Strikingly, ants from the soil-free colony also had magnetic particles; yet, as observed by ferromagnetic resonance, these particles differed from those in soil-exposed ants and were not associated with a magnetic compass sensitive to this experimental manipulation.
Idioma originalEnglish
Páginas (desde-hasta)55-62
PublicaciónBehavioral Ecology and Sociobiology
Volumen68
N.º1
DOI
EstadoPublished - ene 2014

Citar esto

Riveros, Andre J. ; Esquivel, Darci M. S. ; Wajnberg, Eliane ; Srygley, Robert B. / Do leaf-cutter ants Atta colombica obtain their magnetic sensors from soil?. En: Behavioral Ecology and Sociobiology. 2014 ; Vol. 68, N.º 1. pp. 55-62.
@article{4db29b614a6a4609946873df8cb6419f,
title = "Do leaf-cutter ants Atta colombica obtain their magnetic sensors from soil?",
abstract = "How animals sense, process, and use magnetic information remains elusive. In insects, magnetic particles are candidates for a magnetic sensor. Recent studies suggest that the ant Pachycondyla marginata incorporates iron-containing particles from soil. We used leaf-cutter ants Atta colombica to test whether soil contact is necessary for developing a functional magnetic compass. A. colombica is the only invertebrate known to calculate a path-integrated home vector using a magnetic compass. Here, we show that A. colombica requires contact with soil to incorporate magnetic particles that can be used as a magnetic compass; yet, we also show that ants can biosynthesize magnetic particles. Workers from a soil-free colony ignored a 90° shift in the horizontal component of the geomagnetic field, yet oriented homeward despite the occlusion of any geocentric cues. In contrast, workers from a soil-exposed colony oriented to an intermediate direction between their true and subjective home in the shifted field. Homeward orientations under shifted fields suggest that ants calculated a path-integrated vector using proprioceptive information. Strikingly, ants from the soil-free colony also had magnetic particles; yet, as observed by ferromagnetic resonance, these particles differed from those in soil-exposed ants and were not associated with a magnetic compass sensitive to this experimental manipulation.",
author = "Riveros, {Andre J.} and Esquivel, {Darci M. S.} and Eliane Wajnberg and Srygley, {Robert B.}",
year = "2014",
month = "1",
doi = "10.1007/s00265-013-1621-7",
language = "Ingl{\'e}s",
volume = "68",
pages = "55--62",
journal = "Behavioral Ecology and Sociobiology",
issn = "0340-5443",
publisher = "Springer",
number = "1",

}

Do leaf-cutter ants Atta colombica obtain their magnetic sensors from soil? / Riveros, Andre J.; Esquivel, Darci M. S.; Wajnberg, Eliane; Srygley, Robert B.

En: Behavioral Ecology and Sociobiology, Vol. 68, N.º 1, 01.2014, p. 55-62.

Resultado de la investigación: Contribución a RevistaArtículo

TY - JOUR

T1 - Do leaf-cutter ants Atta colombica obtain their magnetic sensors from soil?

AU - Riveros, Andre J.

AU - Esquivel, Darci M. S.

AU - Wajnberg, Eliane

AU - Srygley, Robert B.

PY - 2014/1

Y1 - 2014/1

N2 - How animals sense, process, and use magnetic information remains elusive. In insects, magnetic particles are candidates for a magnetic sensor. Recent studies suggest that the ant Pachycondyla marginata incorporates iron-containing particles from soil. We used leaf-cutter ants Atta colombica to test whether soil contact is necessary for developing a functional magnetic compass. A. colombica is the only invertebrate known to calculate a path-integrated home vector using a magnetic compass. Here, we show that A. colombica requires contact with soil to incorporate magnetic particles that can be used as a magnetic compass; yet, we also show that ants can biosynthesize magnetic particles. Workers from a soil-free colony ignored a 90° shift in the horizontal component of the geomagnetic field, yet oriented homeward despite the occlusion of any geocentric cues. In contrast, workers from a soil-exposed colony oriented to an intermediate direction between their true and subjective home in the shifted field. Homeward orientations under shifted fields suggest that ants calculated a path-integrated vector using proprioceptive information. Strikingly, ants from the soil-free colony also had magnetic particles; yet, as observed by ferromagnetic resonance, these particles differed from those in soil-exposed ants and were not associated with a magnetic compass sensitive to this experimental manipulation.

AB - How animals sense, process, and use magnetic information remains elusive. In insects, magnetic particles are candidates for a magnetic sensor. Recent studies suggest that the ant Pachycondyla marginata incorporates iron-containing particles from soil. We used leaf-cutter ants Atta colombica to test whether soil contact is necessary for developing a functional magnetic compass. A. colombica is the only invertebrate known to calculate a path-integrated home vector using a magnetic compass. Here, we show that A. colombica requires contact with soil to incorporate magnetic particles that can be used as a magnetic compass; yet, we also show that ants can biosynthesize magnetic particles. Workers from a soil-free colony ignored a 90° shift in the horizontal component of the geomagnetic field, yet oriented homeward despite the occlusion of any geocentric cues. In contrast, workers from a soil-exposed colony oriented to an intermediate direction between their true and subjective home in the shifted field. Homeward orientations under shifted fields suggest that ants calculated a path-integrated vector using proprioceptive information. Strikingly, ants from the soil-free colony also had magnetic particles; yet, as observed by ferromagnetic resonance, these particles differed from those in soil-exposed ants and were not associated with a magnetic compass sensitive to this experimental manipulation.

U2 - 10.1007/s00265-013-1621-7

DO - 10.1007/s00265-013-1621-7

M3 - Artículo

VL - 68

SP - 55

EP - 62

JO - Behavioral Ecology and Sociobiology

JF - Behavioral Ecology and Sociobiology

SN - 0340-5443

IS - 1

ER -