Energy expenditure during activity in the American lobster Homarus americanus:Correlations with body acceleration


Autoria(s): Lyons, G.N.; Houghton, J.D.R.; Halsey, L.G.; Pope, E.C.; Eddington, J.D.
Data(s)

01/10/2013

Resumo

How animals manage time and expend energy has implications for survivorship. Being able to measure key metabolic costs of animals under natural conditions is therefore an important tool in behavioral ecology. One method for estimating activity-specific metabolic rate is via derived measures of acceleration, often 'overall dynamic body acceleration' (ODBA), recorded by an instrumented acceleration logger. ODBA has been shown to correlate well with rate of oxygen consumption (V ?o) in a range of species during activity in the laboratory. This study devised a method for attaching acceleration loggers to decapod crustaceans and then correlated ODBA against concurrent respirometry readings to assess accelerometry as a proxy for activity-specific energy expenditure in a model species, the American lobster Homarus americanus. Where the instrumented animals exhibited a sufficient range of activity levels, positive linear relationships were found between V ?o and ODBA over 20min periods at a range of ambient temperatures (6, 13 and 20°C). Mixed effect linear models based on these data and morphometrics provided reasonably strong predictive power for estimating activity-specific V ?o from ODBA. These V ?o-ODBA calibrations demonstrate the potential of accelerometry as an effective predictor of behavior-specific metabolic rate of crustaceans in the wild during periods of activity. © 2013 Elsevier Inc.

Identificador

http://pure.qub.ac.uk/portal/en/publications/energy-expenditure-during-activity-in-the-american-lobster-homarus-americanus(2bdcf122-eaf4-41ba-a709-c74fd91b5453).html

http://dx.doi.org/10.1016/j.cbpa.2013.06.024

http://www.scopus.com/inward/record.url?eid=2-s2.0-84880403768&partnerID=8YFLogxK

Idioma(s)

eng

Direitos

info:eu-repo/semantics/restrictedAccess

Fonte

Lyons , G N , Houghton , J D R , Halsey , L G , Pope , E C & Eddington , J D 2013 , ' Energy expenditure during activity in the American lobster Homarus americanus : Correlations with body acceleration ' Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology , vol 166 , no. 2 , pp. 278-284 . DOI: 10.1016/j.cbpa.2013.06.024

Tipo

article