Artículo

Farji-Brener, A.G.; Dalton, M.C.; Balza, U.; Courtis, A.; Lemus-Domínguez, I.; Fernández-Hilario, R.; Cáceres-Levi, D. "Working in the rain? Why leaf-cutting ants stop foraging when it’s raining" (2018) Insectes Sociaux. 65(2):233-239
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Abstract:

Understanding how environmental factors modulate foraging is key to recognizing the adaptive value of animal behavior, especially in ectothermic organisms such as ants. We experimentally analyzed the effect of rain on the foraging of leaf-cutting ants, a key ant group that is commonly found in rainy habitats. Specifically, we experimentally discriminate among direct and indirect effects of rain on laden ants and explore whether ants respond to rain predictors by incrementing their speed. Watered loads were frequently dropped although ants were not wet, and watered ants also dropped their loads although loads were not wet. Watered leaf fragments increased their weight by 143% and were dropped independently with regards to area or symmetry. Watering the trail did not affect the proportion of ants that dropped their loads. Ants increased their speed by 30% after experimental increments in relative humidity and the noise of raindrops on leaves near the trail. Our experimental results confirm earlier anecdotic evidence of the negative effect of rainfall on the foraging of leaf-cutting ants. We demonstrate that rain can strongly limit ant foraging through different mechanisms, affecting both the ant itself, and the maneuverability of laden ants, by increasing the weight of their loads. We also depict behavioral responses that may mitigate this negative effect on foraging: walking faster at signals of rainfall to reduce the portion of leaf fragments lost. Our results illustrate how environmental factors can directly and indirectly constrain ant foraging and highlight the relevance of behavioral responses to mitigate these effects. © 2018, International Union for the Study of Social Insects (IUSSI).

Registro:

Documento: Artículo
Título:Working in the rain? Why leaf-cutting ants stop foraging when it’s raining
Autor:Farji-Brener, A.G.; Dalton, M.C.; Balza, U.; Courtis, A.; Lemus-Domínguez, I.; Fernández-Hilario, R.; Cáceres-Levi, D.
Filiación:Laboratorio Ecotono, INIBIOMA, Centro Regional Universitario Bariloche, Universidad del Comahue y CONICET, Bariloche, Argentina
Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”-CONICET, Buenos Aires, Argentina
Centro Austral de Investigaciones Científicas (CADIC-CONICET), Bernardo Houssay 200, Ushuaia, Tierra del Fuego, Argentina
Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste-CONICET, Corrientes, Argentina
Instituto de Ecología A.C., Red de Biología Evolutiva, Veracruz, Mexico
Herbario Forestal MOL, Universidad Nacional Agraria La Molina, Lima, Peru
Facultad de Ingeniería Agraria, Universidad Católica Sedes Sapientiae, Los Olivos, Peru
Palabras clave:Ant behavior; Atta cephalotes; Costa Rica; Environmental restrictions; Foraging; ant; behavioral response; environmental effect; environmental factor; experimental study; foraging behavior; noise; rainfall; relative humidity; Costa Rica; Animalia; Atta; Atta cephalotes; Formicidae
Año:2018
Volumen:65
Número:2
Página de inicio:233
Página de fin:239
DOI: http://dx.doi.org/10.1007/s00040-018-0605-z
Título revista:Insectes Sociaux
Título revista abreviado:Insectes Sociaux
ISSN:00201812
CODEN:INSOA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201812_v65_n2_p233_FarjiBrener

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Citas:

---------- APA ----------
Farji-Brener, A.G., Dalton, M.C., Balza, U., Courtis, A., Lemus-Domínguez, I., Fernández-Hilario, R. & Cáceres-Levi, D. (2018) . Working in the rain? Why leaf-cutting ants stop foraging when it’s raining. Insectes Sociaux, 65(2), 233-239.
http://dx.doi.org/10.1007/s00040-018-0605-z
---------- CHICAGO ----------
Farji-Brener, A.G., Dalton, M.C., Balza, U., Courtis, A., Lemus-Domínguez, I., Fernández-Hilario, R., et al. "Working in the rain? Why leaf-cutting ants stop foraging when it’s raining" . Insectes Sociaux 65, no. 2 (2018) : 233-239.
http://dx.doi.org/10.1007/s00040-018-0605-z
---------- MLA ----------
Farji-Brener, A.G., Dalton, M.C., Balza, U., Courtis, A., Lemus-Domínguez, I., Fernández-Hilario, R., et al. "Working in the rain? Why leaf-cutting ants stop foraging when it’s raining" . Insectes Sociaux, vol. 65, no. 2, 2018, pp. 233-239.
http://dx.doi.org/10.1007/s00040-018-0605-z
---------- VANCOUVER ----------
Farji-Brener, A.G., Dalton, M.C., Balza, U., Courtis, A., Lemus-Domínguez, I., Fernández-Hilario, R., et al. Working in the rain? Why leaf-cutting ants stop foraging when it’s raining. Insectes Sociaux. 2018;65(2):233-239.
http://dx.doi.org/10.1007/s00040-018-0605-z