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

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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Detalles Bibliográficos
Autores principales: Roces, Flavio, Núñez, Josué Antonio
Publicado: 1996
Materias:
Ant
Camponotus
Circadian rhythm
Entrainment
Masking
Temperature
ant
circadian rhythm
photoperiod
temperature
thermal preference
Camponotus mus
Formicidae
Hymenoptera
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03076962_v21_n2_p138_Roces
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
id paper:paper_03076962_v21_n2_p138_Roces
record_format dspace
spelling paper:paper_03076962_v21_n2_p138_Roces2023-06-08T15:31:29Z A circadian rhythm of thermal preference in the ant Camponotus mus: Masking and entrainment by temperature cycles Roces, Flavio Núñez, Josué Antonio 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. 1996 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03076962_v21_n2_p138_Roces 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, Flavio
Núñez, Josué Antonio
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.
author Roces, Flavio
Núñez, Josué Antonio
author_facet Roces, Flavio
Núñez, Josué Antonio
author_sort Roces, Flavio
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
publishDate 1996
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03076962_v21_n2_p138_Roces
http://hdl.handle.net/20.500.12110/paper_03076962_v21_n2_p138_Roces
work_keys_str_mv AT rocesflavio acircadianrhythmofthermalpreferenceintheantcamponotusmusmaskingandentrainmentbytemperaturecycles
AT nunezjosueantonio acircadianrhythmofthermalpreferenceintheantcamponotusmusmaskingandentrainmentbytemperaturecycles
AT rocesflavio circadianrhythmofthermalpreferenceintheantcamponotusmusmaskingandentrainmentbytemperaturecycles
AT nunezjosueantonio circadianrhythmofthermalpreferenceintheantcamponotusmusmaskingandentrainmentbytemperaturecycles
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