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Modifications to a molt-based ageing system proposed by Wolfe et al. (2010)

2011; Association of Field Ornithologists; Volume: 82; Issue: 4 Linguagem: Inglês

10.1111/j.1557-9263.2011.00345.x

1557-9263

Erik I. Johnson, Jared D. Wolfe, Thomas B. Ryder, Peter Pyle,

Genetic and phenotypic traits in livestock

Journal of Field OrnithologyVolume 82, Issue 4 p. 422-424 Modifications to a molt-based ageing system proposed by Wolfe et al. (2010) Modificaciones a un sistema para clasificar la edad de las aves en base a la muda, propuesta por Wolfe et al. (2010) Erik I. Johnson, Corresponding Author Erik I. Johnson School of Renewable Natural Resources, Louisiana State University and Louisiana State University AgCenter, Baton Rouge, Louisiana 70803, USA Email: ejohn33@lsu.eduSearch for more papers by this authorJared D. Wolfe, Jared D. Wolfe School of Renewable Natural Resources, Louisiana State University and Louisiana State University AgCenter, Baton Rouge, Louisiana 70803, USASearch for more papers by this authorT. Brandt Ryder, T. Brandt Ryder Smithsonian Migratory Bird Center, National Zoological Park, P.O. Box 37012-MRC 5503, Washington, D.C. 20013, USASearch for more papers by this authorPeter Pyle, Peter Pyle Institute for Bird Populations, P.O. Box 1346, Point Reyes Station, California 94956, USASearch for more papers by this author Erik I. Johnson, Corresponding Author Erik I. Johnson School of Renewable Natural Resources, Louisiana State University and Louisiana State University AgCenter, Baton Rouge, Louisiana 70803, USA Email: ejohn33@lsu.eduSearch for more papers by this authorJared D. Wolfe, Jared D. Wolfe School of Renewable Natural Resources, Louisiana State University and Louisiana State University AgCenter, Baton Rouge, Louisiana 70803, USASearch for more papers by this authorT. Brandt Ryder, T. Brandt Ryder Smithsonian Migratory Bird Center, National Zoological Park, P.O. Box 37012-MRC 5503, Washington, D.C. 20013, USASearch for more papers by this authorPeter Pyle, Peter Pyle Institute for Bird Populations, P.O. Box 1346, Point Reyes Station, California 94956, USASearch for more papers by this author First published: 26 November 2011 https://doi.org/10.1111/j.1557-9263.2011.00345.xCitations: 17Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstracten ABSTRACT Wolfe et al. (2010. Journal of Field Ornithology 81: 186–194) proposed a coding system for ageing birds based on the sequence of molts and plumages, which is more practical than a calendar-based system, especially in tropical and southern latitudes where species often breed across 1 January. The Wolfe–Ryder–Pyle (hereafter, W–R–P) three-letter system is based on recognition of molt cycle (first, second, third, definitive, and so on) and plumage phase (juvenile, supplemental, formative, alternate, and basic). For example, a bird in First Cycle Formative plumage is coded as FCF. We propose the use of two additional code options that further refine age brackets. First, we suggest the use of an "after" or "A" code in place of the "C," or cycle code, where an earlier molt cycle or plumage can be ruled out. For example, a bird that exhibits Staffelmauser might be aged as after-third cycle basic, or TAB. Second, we suggest using "pre" or "P" in place of the "C," or cycle code, when birds are actively molting, such as for birds undergoing the second prebasic molt or SPB. For both codes, we discuss their applicability using examples based on actual banding data. Our proposed codes will improve the utility of the W–R–P system by better refining age brackets and by expanding its applicability to a diverse array of taxa. RESUMENes Wolfe et al. (2010. Journal of Field Ornithology 81: 186–194) propuso un sistema de codificación para clasificar la edad de las aves, basada en la secuencia de mudas y plumajes, que es más práctico que un sistema basado en el calendario, especialmente en latitudes tropicales y sur templadas donde las especies a menudo se reproducen alrededor del 1 de enero. El sistema de tres letras Wolfe–Ryder–Pyle (en adelante, W–R–P) se basa en el reconocimiento del ciclo de muda (primero, segundo, tercero, definitivo, y así sucesivamente) y la fase de plumaje (juvenil, suplemental, formativa, alternativa y básica). Por ejemplo, un pájaro en el Primer Ciclo Formativo de plumaje se codifica como PCF. Aquí proponemos el uso de dos tipos de códigos adicionales que afinan más la clasificación de la edad. En primer lugar, sugerimos el uso de un "después" o código "D" en lugar de la "C," o código de ciclo, cuando un ciclo de muda o plumaje anterior puede ser descartado. Por ejemplo, un pájaro que exhibe Staffelmauser podría ser codificado como después del tercero ciclo básico, o TDB. Segundamente, recomendamos el uso de "pre" o "P" en lugar de la "C," o código del ciclo, cuando las aves están activamente mudando, como para las aves en la segunda muda pre-básica o SPB. Para ambos códigos, se discute su aplicación con ejemplos basados en datos de anillamiento reales. Nuestros códigos propuestos mejoraran la utilidad del sistema W–R–P mediante una refinación de la clasificación de la edad y ampliando su aplicabilidad a una variedad de taxones. Citing Literature Volume82, Issue4December 2011Pages 422-424 RelatedInformation