Sexual size dimorphism and sex determination by external measurements in the Redshank Tringa totanus

Włodzimierz Meissner , Pavel Pinchuk , Natalia Karlionova , Izabela Fischer , Lucyna Pilacka


The Redshank is a wader species that shows no sexual dimorphism in plumage, but some dimorphism in size. To propose a method for sexing birds of this species by linear measurements, a discriminant function analysis was applied to a set of morphometric traits in birds captured during the spring migration in southern Belarus. In total, 113 males and 75 females were measured and sexed molecularly. On average, females were larger in all measurements than males. The most sexually dimorphic trait was wing length, which was included in the discriminant function analysis. Jackknife cross-validation showed that the provided equation allowed the correct sexing of 67% of birds (81% of males and 52% of females). When identifying birds with this discriminant function, values lower than -0.96 indicated males, while those larger than 1.17 indicated females. This allowed the correct sexing of 95% of birds of each sex. The presented discriminant equation may be successfully used for sexing Redshanks when blood sampling is not possible, and could be applied to samples collected in the past, providing the opportunity to re-examine results of previous analyses.
Author Włodzimierz Meissner (FB / DVEZ)
Włodzimierz Meissner,,
- Department of Vertebrate Ecology and Zoology
, Pavel Pinchuk
Pavel Pinchuk,,
, Natalia Karlionova
Natalia Karlionova,,
, Izabela Fischer (FB / DVEZ)
Izabela Fischer ,,
- Department of Vertebrate Ecology and Zoology
, Lucyna Pilacka (FB / DVEZ) - [Polish Academy of Science]
Lucyna Pilacka,,
- Department of Vertebrate Ecology and Zoology
- Polska Akademia Nauk
Journal seriesTurkish Journal of Zoology, ISSN 1300-0179, (A 20 pkt)
Issue year2018
Publication size in sheets0.5
Keywords in EnglishSexing, sexual dimorphism, discriminant analysis, shorebirds
ASJC Classification1103 Animal Science and Zoology
Languageen angielski
LicenseOther; published final; Other open licence; with publication
Score (nominal)20
ScoreMinisterial score = 20.0, 30-09-2019, ArticleFromJournal
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 0.809; WoS Impact Factor: 2017 = 0.558 (2) - 2017=0.689 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.