Sexual dimorphism in body size and some exterior traits of pigeon breed groups

Authors : Türker SAVAŞ, Hakan ERDEM

Pages : 68-77

Doi:10.34233/jpr.1219731

View : 46 | Download : 8

Publication Date : 2022-12-30

Article Type : Research Paper

Abstract :In this study, sexual dimorphism in pigeons was investigated. Rensch\`s rule was evaluated across pigeon breeds. Body weight, body length, beak length, wingspan, tail length, and tarsus length were used for the analysis. We have divided the breeds in the five groups insert ignore into journalissuearticles values(form, frills and owls, tumbler and rollers, homer and highflyer, feral);. The allometric relation in the traits between female and male measures were analyzed. The measure of sexual size dimorphism was measured for each trait as a simple male size divided by female size insert ignore into journalissuearticles values(Sexual Size Index, SSI);. On average across traits, male birds have higher values than female birds, both across breed groups and overall. No deviation from isometric allometry can be observed except the tail length. No trends towards logarithmic female values according to the SSI could be identified. According to the results, the rules of Rensch for pigeon breeds are rejected. Sexual dimorphism exists between breeds and traits, mainly in favor of the male birds. In most cases, allometric relationships between breeds change, as do traits.
Keywords : Rensch`s rule, Isomethry, Hyperallometric, Hypoallometric

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