Laboratory evaluation of two bioenergetics models applied to yellow perch: identification of a major source of systematic error
Laboratory growth and food consumption data for two size classes of age 2 year yellow perch Perca flavescens, each fed on two distinct feeding schedules at 21° C, were used to evaluate the abilities of the Wisconsin (WI) and Karas–Thoresson (KT) bioenergetics models to predict fish growth and cumula...
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| Autor*in: |
Bajer, P. G. [verfasserIn] Whitledge, G. W. [verfasserIn] Hayward, R. S. [verfasserIn] |
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E-Artikel |
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| Erschienen: |
Oxford, UK: Blackwell Science Ltd ; 2003 |
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| Schlagwörter: |
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| Umfang: |
Online-Ressource |
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| Reproduktion: |
2003 ; Blackwell Publishing Journal Backfiles 1879-2005 |
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| Übergeordnetes Werk: |
In: Journal of fish biology - Oxford [u.a.] : Wiley-Blackwell, 1969, 62(2003), 2, Seite 0 |
| Übergeordnetes Werk: |
volume:62 ; year:2003 ; number:2 ; pages:0 |
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| DOI / URN: |
10.1046/j.1095-8649.2003.00040.x |
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| 520 | |a Laboratory growth and food consumption data for two size classes of age 2 year yellow perch Perca flavescens, each fed on two distinct feeding schedules at 21° C, were used to evaluate the abilities of the Wisconsin (WI) and Karas–Thoresson (KT) bioenergetics models to predict fish growth and cumulative consumption. Neither model exhibited consistently better performance for predicting fish body masses across all four fish size and feeding regime combinations. Results indicated deficiencies in estimates of resting routine metabolism by both models. Both the WI and KT models exhibited errors for predicting growth rates, which were strongly correlated with food consumption rate. Consumption-dependent prediction errors may be common in bioenergetics models and are probably the result of deficiencies in parameter values or assumptions within the models for calculating energy costs of specific dynamic action, feeding activity metabolism or egestion and excretion. Inter-model differences in growth and consumption predictions were primarily the result of differences in egestion and excretion costs calculated by the two models. The results highlighted the potential importance of parameters describing egestion and excretion costs to the accuracy of bioenergetics model predictions, even though bioenergetics models are generally regarded as being insensitive to these parameters. The findings strongly emphasize the utility and necessity of performing laboratory evaluations of all bioenergetics models for assurance of model accuracy and for facilitation of model refinement. | ||
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10.1046/j.1095-8649.2003.00040.x doi (DE-627)NLEJ243250525 DE-627 ger DE-627 rakwb Bajer, P. G. verfasserin aut Laboratory evaluation of two bioenergetics models applied to yellow perch: identification of a major source of systematic error Oxford, UK Blackwell Science Ltd 2003 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Laboratory growth and food consumption data for two size classes of age 2 year yellow perch Perca flavescens, each fed on two distinct feeding schedules at 21° C, were used to evaluate the abilities of the Wisconsin (WI) and Karas–Thoresson (KT) bioenergetics models to predict fish growth and cumulative consumption. Neither model exhibited consistently better performance for predicting fish body masses across all four fish size and feeding regime combinations. Results indicated deficiencies in estimates of resting routine metabolism by both models. Both the WI and KT models exhibited errors for predicting growth rates, which were strongly correlated with food consumption rate. Consumption-dependent prediction errors may be common in bioenergetics models and are probably the result of deficiencies in parameter values or assumptions within the models for calculating energy costs of specific dynamic action, feeding activity metabolism or egestion and excretion. Inter-model differences in growth and consumption predictions were primarily the result of differences in egestion and excretion costs calculated by the two models. The results highlighted the potential importance of parameters describing egestion and excretion costs to the accuracy of bioenergetics model predictions, even though bioenergetics models are generally regarded as being insensitive to these parameters. The findings strongly emphasize the utility and necessity of performing laboratory evaluations of all bioenergetics models for assurance of model accuracy and for facilitation of model refinement. 2003 Blackwell Publishing Journal Backfiles 1879-2005 |2003|||||||||| bioenergetics Whitledge, G. W. verfasserin aut Hayward, R. S. verfasserin aut Zweifel, R. D. oth In Journal of fish biology Oxford [u.a.] : Wiley-Blackwell, 1969 62(2003), 2, Seite 0 Online-Ressource (DE-627)NLEJ24392741X (DE-600)1471958-7 1095-8649 nnns volume:62 year:2003 number:2 pages:0 http://dx.doi.org/10.1046/j.1095-8649.2003.00040.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 62 2003 2 0 |
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10.1046/j.1095-8649.2003.00040.x doi (DE-627)NLEJ243250525 DE-627 ger DE-627 rakwb Bajer, P. G. verfasserin aut Laboratory evaluation of two bioenergetics models applied to yellow perch: identification of a major source of systematic error Oxford, UK Blackwell Science Ltd 2003 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Laboratory growth and food consumption data for two size classes of age 2 year yellow perch Perca flavescens, each fed on two distinct feeding schedules at 21° C, were used to evaluate the abilities of the Wisconsin (WI) and Karas–Thoresson (KT) bioenergetics models to predict fish growth and cumulative consumption. Neither model exhibited consistently better performance for predicting fish body masses across all four fish size and feeding regime combinations. Results indicated deficiencies in estimates of resting routine metabolism by both models. Both the WI and KT models exhibited errors for predicting growth rates, which were strongly correlated with food consumption rate. Consumption-dependent prediction errors may be common in bioenergetics models and are probably the result of deficiencies in parameter values or assumptions within the models for calculating energy costs of specific dynamic action, feeding activity metabolism or egestion and excretion. Inter-model differences in growth and consumption predictions were primarily the result of differences in egestion and excretion costs calculated by the two models. The results highlighted the potential importance of parameters describing egestion and excretion costs to the accuracy of bioenergetics model predictions, even though bioenergetics models are generally regarded as being insensitive to these parameters. The findings strongly emphasize the utility and necessity of performing laboratory evaluations of all bioenergetics models for assurance of model accuracy and for facilitation of model refinement. 2003 Blackwell Publishing Journal Backfiles 1879-2005 |2003|||||||||| bioenergetics Whitledge, G. W. verfasserin aut Hayward, R. S. verfasserin aut Zweifel, R. D. oth In Journal of fish biology Oxford [u.a.] : Wiley-Blackwell, 1969 62(2003), 2, Seite 0 Online-Ressource (DE-627)NLEJ24392741X (DE-600)1471958-7 1095-8649 nnns volume:62 year:2003 number:2 pages:0 http://dx.doi.org/10.1046/j.1095-8649.2003.00040.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 62 2003 2 0 |
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10.1046/j.1095-8649.2003.00040.x doi (DE-627)NLEJ243250525 DE-627 ger DE-627 rakwb Bajer, P. G. verfasserin aut Laboratory evaluation of two bioenergetics models applied to yellow perch: identification of a major source of systematic error Oxford, UK Blackwell Science Ltd 2003 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Laboratory growth and food consumption data for two size classes of age 2 year yellow perch Perca flavescens, each fed on two distinct feeding schedules at 21° C, were used to evaluate the abilities of the Wisconsin (WI) and Karas–Thoresson (KT) bioenergetics models to predict fish growth and cumulative consumption. Neither model exhibited consistently better performance for predicting fish body masses across all four fish size and feeding regime combinations. Results indicated deficiencies in estimates of resting routine metabolism by both models. Both the WI and KT models exhibited errors for predicting growth rates, which were strongly correlated with food consumption rate. Consumption-dependent prediction errors may be common in bioenergetics models and are probably the result of deficiencies in parameter values or assumptions within the models for calculating energy costs of specific dynamic action, feeding activity metabolism or egestion and excretion. Inter-model differences in growth and consumption predictions were primarily the result of differences in egestion and excretion costs calculated by the two models. The results highlighted the potential importance of parameters describing egestion and excretion costs to the accuracy of bioenergetics model predictions, even though bioenergetics models are generally regarded as being insensitive to these parameters. The findings strongly emphasize the utility and necessity of performing laboratory evaluations of all bioenergetics models for assurance of model accuracy and for facilitation of model refinement. 2003 Blackwell Publishing Journal Backfiles 1879-2005 |2003|||||||||| bioenergetics Whitledge, G. W. verfasserin aut Hayward, R. S. verfasserin aut Zweifel, R. D. oth In Journal of fish biology Oxford [u.a.] : Wiley-Blackwell, 1969 62(2003), 2, Seite 0 Online-Ressource (DE-627)NLEJ24392741X (DE-600)1471958-7 1095-8649 nnns volume:62 year:2003 number:2 pages:0 http://dx.doi.org/10.1046/j.1095-8649.2003.00040.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 62 2003 2 0 |
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10.1046/j.1095-8649.2003.00040.x doi (DE-627)NLEJ243250525 DE-627 ger DE-627 rakwb Bajer, P. G. verfasserin aut Laboratory evaluation of two bioenergetics models applied to yellow perch: identification of a major source of systematic error Oxford, UK Blackwell Science Ltd 2003 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Laboratory growth and food consumption data for two size classes of age 2 year yellow perch Perca flavescens, each fed on two distinct feeding schedules at 21° C, were used to evaluate the abilities of the Wisconsin (WI) and Karas–Thoresson (KT) bioenergetics models to predict fish growth and cumulative consumption. Neither model exhibited consistently better performance for predicting fish body masses across all four fish size and feeding regime combinations. Results indicated deficiencies in estimates of resting routine metabolism by both models. Both the WI and KT models exhibited errors for predicting growth rates, which were strongly correlated with food consumption rate. Consumption-dependent prediction errors may be common in bioenergetics models and are probably the result of deficiencies in parameter values or assumptions within the models for calculating energy costs of specific dynamic action, feeding activity metabolism or egestion and excretion. Inter-model differences in growth and consumption predictions were primarily the result of differences in egestion and excretion costs calculated by the two models. The results highlighted the potential importance of parameters describing egestion and excretion costs to the accuracy of bioenergetics model predictions, even though bioenergetics models are generally regarded as being insensitive to these parameters. The findings strongly emphasize the utility and necessity of performing laboratory evaluations of all bioenergetics models for assurance of model accuracy and for facilitation of model refinement. 2003 Blackwell Publishing Journal Backfiles 1879-2005 |2003|||||||||| bioenergetics Whitledge, G. W. verfasserin aut Hayward, R. S. verfasserin aut Zweifel, R. D. oth In Journal of fish biology Oxford [u.a.] : Wiley-Blackwell, 1969 62(2003), 2, Seite 0 Online-Ressource (DE-627)NLEJ24392741X (DE-600)1471958-7 1095-8649 nnns volume:62 year:2003 number:2 pages:0 http://dx.doi.org/10.1046/j.1095-8649.2003.00040.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 62 2003 2 0 |
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10.1046/j.1095-8649.2003.00040.x doi (DE-627)NLEJ243250525 DE-627 ger DE-627 rakwb Bajer, P. G. verfasserin aut Laboratory evaluation of two bioenergetics models applied to yellow perch: identification of a major source of systematic error Oxford, UK Blackwell Science Ltd 2003 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Laboratory growth and food consumption data for two size classes of age 2 year yellow perch Perca flavescens, each fed on two distinct feeding schedules at 21° C, were used to evaluate the abilities of the Wisconsin (WI) and Karas–Thoresson (KT) bioenergetics models to predict fish growth and cumulative consumption. Neither model exhibited consistently better performance for predicting fish body masses across all four fish size and feeding regime combinations. Results indicated deficiencies in estimates of resting routine metabolism by both models. Both the WI and KT models exhibited errors for predicting growth rates, which were strongly correlated with food consumption rate. Consumption-dependent prediction errors may be common in bioenergetics models and are probably the result of deficiencies in parameter values or assumptions within the models for calculating energy costs of specific dynamic action, feeding activity metabolism or egestion and excretion. Inter-model differences in growth and consumption predictions were primarily the result of differences in egestion and excretion costs calculated by the two models. The results highlighted the potential importance of parameters describing egestion and excretion costs to the accuracy of bioenergetics model predictions, even though bioenergetics models are generally regarded as being insensitive to these parameters. The findings strongly emphasize the utility and necessity of performing laboratory evaluations of all bioenergetics models for assurance of model accuracy and for facilitation of model refinement. 2003 Blackwell Publishing Journal Backfiles 1879-2005 |2003|||||||||| bioenergetics Whitledge, G. W. verfasserin aut Hayward, R. S. verfasserin aut Zweifel, R. D. oth In Journal of fish biology Oxford [u.a.] : Wiley-Blackwell, 1969 62(2003), 2, Seite 0 Online-Ressource (DE-627)NLEJ24392741X (DE-600)1471958-7 1095-8649 nnns volume:62 year:2003 number:2 pages:0 http://dx.doi.org/10.1046/j.1095-8649.2003.00040.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 62 2003 2 0 |
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laboratory evaluation of two bioenergetics models applied to yellow perch: identification of a major source of systematic error |
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Laboratory evaluation of two bioenergetics models applied to yellow perch: identification of a major source of systematic error |
| abstract |
Laboratory growth and food consumption data for two size classes of age 2 year yellow perch Perca flavescens, each fed on two distinct feeding schedules at 21° C, were used to evaluate the abilities of the Wisconsin (WI) and Karas–Thoresson (KT) bioenergetics models to predict fish growth and cumulative consumption. Neither model exhibited consistently better performance for predicting fish body masses across all four fish size and feeding regime combinations. Results indicated deficiencies in estimates of resting routine metabolism by both models. Both the WI and KT models exhibited errors for predicting growth rates, which were strongly correlated with food consumption rate. Consumption-dependent prediction errors may be common in bioenergetics models and are probably the result of deficiencies in parameter values or assumptions within the models for calculating energy costs of specific dynamic action, feeding activity metabolism or egestion and excretion. Inter-model differences in growth and consumption predictions were primarily the result of differences in egestion and excretion costs calculated by the two models. The results highlighted the potential importance of parameters describing egestion and excretion costs to the accuracy of bioenergetics model predictions, even though bioenergetics models are generally regarded as being insensitive to these parameters. The findings strongly emphasize the utility and necessity of performing laboratory evaluations of all bioenergetics models for assurance of model accuracy and for facilitation of model refinement. |
| abstractGer |
Laboratory growth and food consumption data for two size classes of age 2 year yellow perch Perca flavescens, each fed on two distinct feeding schedules at 21° C, were used to evaluate the abilities of the Wisconsin (WI) and Karas–Thoresson (KT) bioenergetics models to predict fish growth and cumulative consumption. Neither model exhibited consistently better performance for predicting fish body masses across all four fish size and feeding regime combinations. Results indicated deficiencies in estimates of resting routine metabolism by both models. Both the WI and KT models exhibited errors for predicting growth rates, which were strongly correlated with food consumption rate. Consumption-dependent prediction errors may be common in bioenergetics models and are probably the result of deficiencies in parameter values or assumptions within the models for calculating energy costs of specific dynamic action, feeding activity metabolism or egestion and excretion. Inter-model differences in growth and consumption predictions were primarily the result of differences in egestion and excretion costs calculated by the two models. The results highlighted the potential importance of parameters describing egestion and excretion costs to the accuracy of bioenergetics model predictions, even though bioenergetics models are generally regarded as being insensitive to these parameters. The findings strongly emphasize the utility and necessity of performing laboratory evaluations of all bioenergetics models for assurance of model accuracy and for facilitation of model refinement. |
| abstract_unstemmed |
Laboratory growth and food consumption data for two size classes of age 2 year yellow perch Perca flavescens, each fed on two distinct feeding schedules at 21° C, were used to evaluate the abilities of the Wisconsin (WI) and Karas–Thoresson (KT) bioenergetics models to predict fish growth and cumulative consumption. Neither model exhibited consistently better performance for predicting fish body masses across all four fish size and feeding regime combinations. Results indicated deficiencies in estimates of resting routine metabolism by both models. Both the WI and KT models exhibited errors for predicting growth rates, which were strongly correlated with food consumption rate. Consumption-dependent prediction errors may be common in bioenergetics models and are probably the result of deficiencies in parameter values or assumptions within the models for calculating energy costs of specific dynamic action, feeding activity metabolism or egestion and excretion. Inter-model differences in growth and consumption predictions were primarily the result of differences in egestion and excretion costs calculated by the two models. The results highlighted the potential importance of parameters describing egestion and excretion costs to the accuracy of bioenergetics model predictions, even though bioenergetics models are generally regarded as being insensitive to these parameters. The findings strongly emphasize the utility and necessity of performing laboratory evaluations of all bioenergetics models for assurance of model accuracy and for facilitation of model refinement. |
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Laboratory evaluation of two bioenergetics models applied to yellow perch: identification of a major source of systematic error |
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Whitledge, G. W. Hayward, R. S. Zweifel, R. D. |
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