Artículo
Abstract:
Along a stable temperature gradient and under a LD 12:12 h cycle, nurse workers of the ant Camponotus mus Roger 1863 (Hymenoptera: Formicidae) select for the brood two different temperatures daily: 30.8°C at the middle of the light period (circadian phase = 90°), and 27.5°C 8 h later, during the dark period (circadian phase = 210°), this rhythm being of endogenous nature. When a 24 h temperature cycle was superimposed along the thermal gradient, so that the immobile brood experienced a temperature transition as they receive when translocated by nurses (8 h at 30.8°C and 16 h at 27.5°C), no brood translocations occurred. The thermal cycle masked the rhythm of brood translocation when temperature fitted the daily pattern expected by nurses. When the same temperature cycle was presented with a phase-advance, nurses did not tolerate the early thermal increase and removed the brood as temperature rose. However, when workers experienced this new phase relationship between light and temperature cycles for more than 10 days, brood translocations were suppressed. Records under constant conditions of light and temperature indicated that the overt rhythm was locked-on to the expected early increase in temperature, so that the temperature cycle dominated over the LD cycle in resetting brood-carrying activity.
Registro:
| Documento: | Artículo |
| Título: | A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles |
| Autor: | Roces, F.; Núñez, J.A. |
| Filiación: | Departameruo de Biología, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina Theodor-Boveri-Institut, Lehrst. F. Verhaltensphysiologie S., Am Hubland, D-97074 Würzburg, Germany |
| Palabras clave: | Ant; Camponotus; Circadian rhythm; Entrainment; Masking; Temperature; ant; circadian rhythm; photoperiod; temperature; thermal preference; Camponotus mus; Formicidae; Hymenoptera |
| Año: | 1996 |
| Volumen: | 21 |
| Número: | 2 |
| Página de inicio: | 138 |
| Página de fin: | 142 |
| DOI: | http://dx.doi.org/10.1111/j.1365-3032.1996.tb00846.x |
| Título revista: | Physiological Entomology |
| Título revista abreviado: | Physiol.Entomol. |
| ISSN: | 03076962 |
| CODEN: | PENTD |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03076962_v21_n2_p138_Roces |
Referencias:
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Citas:
---------- APA ----------
Roces, F. & Núñez, J.A. (1996) . A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles. Physiological Entomology, 21(2), 138-142.http://dx.doi.org/10.1111/j.1365-3032.1996.tb00846.x
---------- CHICAGO ----------
Roces, F., Núñez, J.A. "A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles" . Physiological Entomology 21, no. 2 (1996) : 138-142.http://dx.doi.org/10.1111/j.1365-3032.1996.tb00846.x
---------- MLA ----------
Roces, F., Núñez, J.A. "A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles" . Physiological Entomology, vol. 21, no. 2, 1996, pp. 138-142.http://dx.doi.org/10.1111/j.1365-3032.1996.tb00846.x
---------- VANCOUVER ----------
Roces, F., Núñez, J.A. A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles. Physiol.Entomol. 1996;21(2):138-142.http://dx.doi.org/10.1111/j.1365-3032.1996.tb00846.x
