A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles

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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 dar...

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Autores principales: Roces, F., Núñez, J.A.
Formato: JOUR
Materias:
Ant
Camponotus
Circadian rhythm
Entrainment
Masking
Temperature
ant
circadian rhythm
photoperiod
temperature
thermal preference
Camponotus mus
Formicidae
Hymenoptera
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03076962_v21_n2_p138_Roces
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_03076962_v21_n2_p138_Roces2023-10-03T15:22:40Z A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles Roces, F. Núñez, J.A. Ant Camponotus Circadian rhythm Entrainment Masking Temperature ant circadian rhythm photoperiod temperature thermal preference Camponotus mus Formicidae Hymenoptera 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. Fil:Roces, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Núñez, J.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03076962_v21_n2_p138_Roces
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Ant
Camponotus
Circadian rhythm
Entrainment
Masking
Temperature
ant
circadian rhythm
photoperiod
temperature
thermal preference
Camponotus mus
Formicidae
Hymenoptera
spellingShingle Ant
Camponotus
Circadian rhythm
Entrainment
Masking
Temperature
ant
circadian rhythm
photoperiod
temperature
thermal preference
Camponotus mus
Formicidae
Hymenoptera
Roces, F.
Núñez, J.A.
A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles
topic_facet Ant
Camponotus
Circadian rhythm
Entrainment
Masking
Temperature
ant
circadian rhythm
photoperiod
temperature
thermal preference
Camponotus mus
Formicidae
Hymenoptera
description 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.
format JOUR
author Roces, F.
Núñez, J.A.
author_facet Roces, F.
Núñez, J.A.
author_sort Roces, F.
title A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles
title_short A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles
title_full A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles
title_fullStr A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles
title_full_unstemmed A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles
title_sort circadian rhythm of thermal preference in the ant camponotus mus: masking and entrainment by temperature cycles
url http://hdl.handle.net/20.500.12110/paper_03076962_v21_n2_p138_Roces
work_keys_str_mv AT rocesf acircadianrhythmofthermalpreferenceintheantcamponotusmusmaskingandentrainmentbytemperaturecycles
AT nunezja acircadianrhythmofthermalpreferenceintheantcamponotusmusmaskingandentrainmentbytemperaturecycles
AT rocesf circadianrhythmofthermalpreferenceintheantcamponotusmusmaskingandentrainmentbytemperaturecycles
AT nunezja circadianrhythmofthermalpreferenceintheantcamponotusmusmaskingandentrainmentbytemperaturecycles
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