The effects of scaling on age, sex and size relationships in Red-legged Partridges

Nadal, Jesús; Ponz, Carolina; Margalida, Antoni (2018). The effects of scaling on age, sex and size relationships in Red-legged Partridges. Scientific Reports, 8(1), p. 2174. Nature Publishing Group 10.1038/s41598-018-20576-x

[img]
Preview
Text
Nadal_SciRep2018.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (1MB) | Preview

Wild birds differ in size according to their age and sex, adult birds being larger than juveniles. In the galliforms, males are larger than females, in contrast to some groups, such as the raptors, in which the females are larger. Size generally influences the rank hierarchy within a group of birds, although the age, sex, temperament and behaviour of an individual may override its size related rank order. The scaled size of birds according to age and sex affects their physiology and behaviour. Precise details of body-size differences by age and sex are poorly known in most partridge species. We measured 13,814 wild partridges in a homogenous population over 14 years of study to evaluate size differences within a uniform habitat and population management regime. We show that wild Red-legged Partridges have scaled mass, and body- and wing-lengths consistent with age/sex classes. Power functions between mass and body-length (as a proxy for walking efficiency), and between mass and wing-length (for flight efficiency) differ between juvenile females and males, and adult females and males. We discuss these findings and their physiological, behavioural and ecological implications.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE) > Conservation Biology

UniBE Contributor:

Margalida, Antoni

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 590 Animals (Zoology)

ISSN:

2045-2322

Publisher:

Nature Publishing Group

Language:

English

Submitter:

Olivier Roth

Date Deposited:

05 Jun 2019 13:19

Last Modified:

23 Oct 2019 18:45

Publisher DOI:

10.1038/s41598-018-20576-x

PubMed ID:

29391508

BORIS DOI:

10.7892/boris.126982

URI:

https://boris.unibe.ch/id/eprint/126982

Actions (login required)

Edit item Edit item
Provide Feedback