Differential Annual Movement Patterns in a Migratory Species: Effects of Experience and Sexual Maturation

Simple item page
dc.contributor.authorJorge, Paulo E.en
dc.contributor.authorSowter, Daviden
dc.contributor.authorMarques, Paulo A. M.en
dc.contributor.departmentBiological Sciencesen
dc.date.accessioned2018-11-06T14:59:23Zen
dc.date.available2018-11-06T14:59:23Zen
dc.date.issued2011-07-20en
dc.description.abstractSome animals migrate long distances to exploit important seasonal food resources in the northern regions of the northern hemisphere, whilst avoiding winter starvation. Changes in the individual's age and navigational skills are likely to affect migration, which in turn influences the geographic distribution of individuals. Processes such as sexual maturation and navigational abilities are affected by age, and age is thus a key factor in understanding migration patterns and differences in distribution ranges. In the present study, we investigated the effects of age on the geographic distribution of a population of Lesser Black-backed Gulls Larus fuscus throughout its annual cycle, by analyzing a dataset of 19,096 records from 10,000 color-ringed gulls. In contrast to previous assumptions, the results showed that gulls were geographically segregated by age throughout the entire annual cycle, rather than showing a geographic age-related cline only in the wintering areas. This asymmetric distribution results from a reduction in the annual range of sexually mature gulls, and the differential distribution of mature and immature individuals (mature birds remained in more northern areas, compared to immature birds, throughout the annual cycle). Furthermore, although immature gulls travelled longer distances than adults, they initiated their fall migration with short movements, in contrast to adults that migrated using longer movements. The effects identified in this study explain the non-homogenous distribution of populations throughout the annual cycle, with wide implications for the development of effective human health policies and/or wildlife management strategies.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0022433en
dc.identifier.eissn1932-6203en
dc.identifier.issue7en
dc.identifier.othere22433en
dc.identifier.pmid21799853en
dc.identifier.urihttp://hdl.handle.net/10919/85657en
dc.identifier.volume6en
dc.language.isoenen
dc.publisherPLOSen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleDifferential Annual Movement Patterns in a Migratory Species: Effects of Experience and Sexual Maturationen
dc.title.serialPLOS ONEen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
journal.pone.0022433.PDF
Size:
307.28 KB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Scholarly Works, Biological Sciences