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Endogenous cardiac acitivity rhythms of continental slope Nephrops norvegicus (Decapoda: Nephropidae)

AutorAguzzi, Jacopo ; Abelló, Pere ; Depledge, Michel H.
Palabras claveNephrops norvegicus
Continental slope
Cardiac rhythms
Heart rate
Circadian rhythms
Ultradian rhythms
Western Mediterranean
Fecha de publicación2004
EditorTaylor & Francis
CitaciónMarine and Freshwater Behaviour and Physiology 37(1): 55-64 (2004)
ResumenThe endogenous cardiac activity rhythm of the Norway lobster Nephrops norvegicus was studied under constant conditions of darkness by means of a computer-aided monitoring system (CAPMON). Time series recordings of the heart rate (beats min-1) were obtained from 47 adult males freshly collected from the continental slope (400-430m) in the western Mediterranean. Periodogram analysis revealed the occurrence of circadian periodicity (of around 24h) in most cases. A large percentage of animals showed significant ultradian periods (of around 12 and 18h). The analysis of the circadian time series revealed the occurrence of peaks of heart rate activity during the expected night phase of the cycle. These results are discussed in relation to the emergence and locomotor activity rhythms of the species. © 2004 Taylor and Francis Ltd.
Descripción10 pages, 5 figures
Versión del editorhttps://dx.doi.org/10.1080/1023624042000199890
Identificadoresdoi: 10.1080/1023624042000199890
issn: 1023-6244
e-issn: 1029-0362
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