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Comparative metabolic rates of common western North Atlantic Ocean sciaenid fishes
Author(s) -
Horodysky A. Z.,
Brill R. W.,
Bushnell P. G.,
Musick J. A.,
Latour R. J.
Publication year - 2011
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2011.03017.x
Subject(s) - biology , thunnus , autoregressive model , sciaenidae , fishery , statistics , tuna , fish <actinopterygii> , mathematics
The resting metabolic rates ( R R ) of western North Atlantic Ocean sciaenids, such as Atlantic croaker Micropogonias undulatus , spot Leiostomus xanthurus and kingfishes Menticirrhus spp., as well as the active metabolic rates ( R A ) of M. undulatus and L . xanthurus were investigated to facilitate inter and intraspecific comparisons of their energetic ecology. The R R of M. undulatus and L . xanthurus were typical for fishes with similar lifestyles. The R R of Menticirrhus spp. were elevated relative to those of M. undulatus and L . xanthurus , but below those of high‐energy‐demand species such as tunas Thunnus spp. and dolphinfish Coryphaena hippurus . Repeated‐measures non‐linear mixed‐effects models were applied to account for within‐individual autocorrelation and corrected for non‐constant variance typical of noisy R A data sets. Repeated‐measures models incorporating autoregressive first‐order [AR(1)] and autoregressive moving average (ARMA) covariances provided significantly superior fits, more precise parameter estimates ( i.e. reduced s.e .) and y ‐intercept estimates that more closely approximated measured R R for M. undulatus and L . xanthurus than standard least‐squares regression procedures.