Kloskowski, Janusz ; Grela, Przemysław ; Krogulec, Jarosław ; Gaska, Michał ; Tchórzewski, Marek
Określanie płci u perkoza rdzawoszyjego za pomocą analizy DNA i pomiarów biometrycznych ; Short notes
Museum and Institute of Zoology, Polish Academy of Sciences
Museum and Institute of Zoology, Polish Academy of Sciences
Sexual size dimorphism was analysed in the Red- necked Grebe in southeast Poland. A DNA-based procedure was utilised to sex individuals and to assess the accuracy of morphological criteria for the sex identification of adult breeding birds: discriminant analysis on the sample level and within-pair comparisons. Males were significantly larger than females in all body measurements used in the discriminant function selection process. Owing to considerable overlap in measurements, however, the sexes cannot be accurately separated by biometrics at the population scale. Sexual dimorphism was most pronounced in bill length measured from the corner of the gape to the tip, but only 79% of individuals were correctly identified on the basis of this parameter alone. When two variables, bill length and wing length, were combined, the discriminant function was of similar efficiency (80%) in determining the sex. The accuracy level of sexing may be improved by comparing mates within pairs: combined comparisons of bill length and body mass were as accurate as the genetic technique, but sex assignment was restricted to 76% of the measured pairs.
oai:rcin.org.pl:55611 ; 10.3161/068.041.0203
MiIZ PAN, sygn. P.4568 ; MiIZ PAN, sygn. P.257 ; kliknij tutaj, żeby przejść
Prawa zastrzeżone - dostęp ograniczony
Muzeum i Instytut Zoologii Polskiej Akademii Nauk
Biblioteka Muzeum i Instytutu Zoologii PAN
8 sie 2023
29 lip 2015
28
https://rcin.org.pl./publication/75809
Kloskowski, Janusz
Rogovin, K. A.
Saether, B. E.
Gittleman, J. L. Van Valkenburgh, B.
Zając, Tadeusz
Lüps, P. Roper, T.
Fandos, P. Vigal, C. R.