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Do different methods yield equivalent estimations of brain size in birds?

dc.creatorOcampo Vargas, Diego
dc.creatorSánchez Morales, César
dc.creatorBarrantes Montero, Gilbert
dc.date.accessioned2022-02-10T20:19:39Z
dc.date.available2022-02-10T20:19:39Z
dc.date.issued2020-08-31
dc.description.abstractThe ratio of brain size to body size (relative brain size) is often used as a measure of relative investment in the brain in ecological and evolutionary studies on a wide range of animal groups. In birds, a variety of methods have been used to measure the brain size part of this ratio, including endocranial volume, fixed brain mass, and fresh brain mass. It is still unclear, however, whether these methods yield the same results. Using data obtained from fresh corpses and from published sources, this study shows that endocranial volume, mass of fixed brain tissue, and fresh mass provide equivalent estimations of brain size for 48 bird families, in 19 orders. We found, however, that the various methods yield significantly different brain size estimates for hummingbirds (Trochilidae). For hummingbirds, fixed brain mass tends to underestimate brain size due to reduced tissue density, whereas endocranial volume overestimates brain size because it includes a larger volume than that occupied by the brain.es_ES
dc.description.procedenceUCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Biologíaes_ES
dc.description.sponsorshipFrank M Chapman Memorial Fund/[]//Estados Unidoses_ES
dc.description.sponsorshipLSUMNS Big Day Fund/[]//Estados Unidoses_ES
dc.identifier.citationhttps://www.karger.com/Article/Abstract/509383
dc.identifier.doi10.1159/000509383
dc.identifier.issn1421-9743
dc.identifier.urihttps://hdl.handle.net/10669/85717
dc.language.isoenges_ES
dc.rightsacceso abierto
dc.sourceBrain, Behavior and Evolution, vol.95(2), pp.113-122.es_ES
dc.subjectFresh brain masses_ES
dc.subjectFixed brain masses_ES
dc.subjectEndocranial volumees_ES
dc.subjectBody sizees_ES
dc.subjectHummingbirdses_ES
dc.titleDo different methods yield equivalent estimations of brain size in birds?es_ES
dc.typeartículo original

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