Do morphometric measurements allow sex discrimination in Mockingbirds (Mimus sp)?

Sexual dimorphism in birds may be expressed as differences in body size, plumage, color and/or behavior. Many species are monomorphic in color, making sex determination difficult in the field. An example of the latter are mockingbirds, which are passerines of the genus Mimus, endemic to the Americas...

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Autores principales: Fuchs, Daniela Viviana, Montalti, Diego
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Zoología
Mimidae
Mockingbirds
Morphometrics
Dimorphism
Southern South America
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/101497
https://ri.conicet.gov.ar/11336/55335
http://arjournals.com/index.php/Biol/article/view/133
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-101497
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Zoología
Mimidae
Mockingbirds
Morphometrics
Dimorphism
Southern South America
spellingShingle Zoología
Mimidae
Mockingbirds
Morphometrics
Dimorphism
Southern South America
Fuchs, Daniela Viviana
Montalti, Diego
Do morphometric measurements allow sex discrimination in Mockingbirds (Mimus sp)?
topic_facet Zoología
Mimidae
Mockingbirds
Morphometrics
Dimorphism
Southern South America
description Sexual dimorphism in birds may be expressed as differences in body size, plumage, color and/or behavior. Many species are monomorphic in color, making sex determination difficult in the field. An example of the latter are mockingbirds, which are passerines of the genus Mimus, endemic to the Americas. In order to distinguish between male and female mockingbirds using external body measurements that are easy to take, the objective of this work was to quantify morphometric differences between sexes in adults of the following species: M. thenca (45 specimens), M. patagonicus (95), M. saturninus (88), M. triurus (152), and M. dorsalis (7). We measured the following variables: culmen length, bill height and width, tarsus length, middle toe length, wing chord and tail length. Measurements were generally larger in males than in females except for bill width in M. saturninus and M. triurus, culmen length in M. thenca and M. dorsalis, and bill height in M. dorsalis. There were significant differences between sexes in wing chord for M. patagonicus, M. saturninus and M. triurus; tail length for M. patagonicus and M. triurus; tarsus length for M. patagonicus; and in middle toe length for M. triurus. No significant differences in measurements were found between sexes for M. thenca. Significant discriminant functions were obtained for M. patagonicus, M. saturninus and M. triurus, with a percentage of correct classification less than 80%. Only a few variables were useful for sex determination in the studied Mimus species, i.e. wing chord, tail length, middle toe length and tarsus length for three, two, one and one species, respectively.
format Articulo
Articulo
author Fuchs, Daniela Viviana
Montalti, Diego
author_facet Fuchs, Daniela Viviana
Montalti, Diego
author_sort Fuchs, Daniela Viviana
title Do morphometric measurements allow sex discrimination in Mockingbirds (Mimus sp)?
title_short Do morphometric measurements allow sex discrimination in Mockingbirds (Mimus sp)?
title_full Do morphometric measurements allow sex discrimination in Mockingbirds (Mimus sp)?
title_fullStr Do morphometric measurements allow sex discrimination in Mockingbirds (Mimus sp)?
title_full_unstemmed Do morphometric measurements allow sex discrimination in Mockingbirds (Mimus sp)?
title_sort do morphometric measurements allow sex discrimination in mockingbirds (mimus sp)?
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/101497
https://ri.conicet.gov.ar/11336/55335
http://arjournals.com/index.php/Biol/article/view/133
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AT montaltidiego domorphometricmeasurementsallowsexdiscriminationinmockingbirdsmimussp
bdutipo_str Repositorios
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