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dc.contributor.author
Márquez, Lorenzo  
dc.contributor.author
Morales, Gabriel Alejandro  
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Sáenz de Rodrigáñez, Miguel  
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Almansa, Eduardo  
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Moyano, Francisco J.  
dc.contributor.author
Díaz, Manuel  
dc.date.available
2018-06-04T16:51:10Z  
dc.date.issued
2015-11  
dc.identifier.citation
Márquez, Lorenzo; Morales, Gabriel Alejandro; Sáenz de Rodrigáñez, Miguel; Almansa, Eduardo; Moyano, Francisco J.; et al.; Comments on the calculation of the specific growth rate in experiments with untagged individuals; Instituto de Ciencias del Mar Barcelona; Scientia Marina; 79; 4; 11-2015; 505-508  
dc.identifier.issn
0214-8358  
dc.identifier.uri
http://hdl.handle.net/11336/47140  
dc.description.abstract
The specific growth rate, G, is widely used in articles dealing with the growth of aquatic organisms under experimental conditions. When individuals are untagged, the arithmetic mean of G for a group of animals must be calculated from weight geometric means, not from arithmetic means. The type of weight mean used in articles to calculate the arithmetic mean of G is usually not reported, and an extended use of weight arithmetic means is common. The arithmetic mean of G so calculated is biased according to the increment in the squared coefficient of variation of body weights. Another potential bias in the calculation of the arithmetic mean of G is size-dependent mortality; this bias cannot be avoided when individuals are untagged, but maximal and minimal values can be obtained. In summary, in view of these analytical results, it seems prudent to calculate the arithmetic mean of G for a group of untagged animals from geometric means of weights, and to estimate the maximal error due to the possibility of size-dependent mortality whenever possible.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Instituto de Ciencias del Mar Barcelona  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/  
dc.subject
Growth Rate  
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Corrections  
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Aquatic Organisms  
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Experimental Cultures  
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Tagging  
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Mortality  
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Otras Ciencias Biológicas  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Comments on the calculation of the specific growth rate in experiments with untagged individuals  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-05-24T14:20:52Z  
dc.identifier.eissn
1886-8134  
dc.journal.volume
79  
dc.journal.number
4  
dc.journal.pagination
505-508  
dc.journal.pais
España  
dc.journal.ciudad
Barcelona  
dc.description.fil
Fil: Márquez, Lorenzo. Universidad Católica de Temuco; Chile  
dc.description.fil
Fil: Morales, Gabriel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Unidad Ejecutora de Investigaciones en Producción Animal. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. Unidad Ejecutora de Investigaciones en Producción Animal; Argentina  
dc.description.fil
Fil: Sáenz de Rodrigáñez, Miguel. Universidad de Almería; España  
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Fil: Almansa, Eduardo. Instituto Español de Oceanografía. Centro Oceanográfico de Canarias; España  
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Fil: Moyano, Francisco J.. Universidad de Almería; España  
dc.description.fil
Fil: Díaz, Manuel. Universidad de Almería; España  
dc.journal.title
Scientia Marina  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://scimar.icm.csic.es/scimar/index.php/secId/6/IdArt/4340/  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1610  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3989/scimar.04303.30A