Status And Structure Of Breeding Gull Populations In North Eastern Mediterranean Island

2016-10-01
Yapan, Batuhan Çağrı
Perktaş, Utku
Karahan, Arzu
Oro, Danıel
Özkan, Korhan
Seabirds are located at the top of the food web of coastal ecosystems. Therefore, the distribution and abundance of seabird populations is an important indicator of wellbeing of the marine ecosystems and the anthropogenic impacts on them. Audouin’s gull (Larus audouinii) has experienced a sharp population decline in 1960's. Although its Western Mediterranean population size has recently recovered; Audouin’s gull population is still not stable and there is not enough information on dispersal and status of its breeding populations in the Eastern Mediterranean coasts. The aim of our study is to survey breeding Audouin’s gull colonies along the coasts of Turkey and to elucidate the genetic structure of these populations, gene flow among each other and relationship with Western Mediterranean populations by using microsatellite loci and mitochondrial D-Loop region. We surveyed all 21 islands and islets along the South East coastline of Turkey from Taşucu, İçel to Gazipaşa, Antalya in late May 2016 and recorded their habitat characteristics and breeding bird colonies. One colony of Audouin's Gull and seven colonies of Yellow-legged gull (Larus michahellis) has been recorded and feather samples were taken from the chicks for genetic analyses. The relationship between habitat characteristics and abundance and distribution of breeding gull colonies will be discussed. Heterozygosity levels, phylogeny and gene flow among populations will be elucidated by using fragment analysis data of microsatellite markers and sequence data of D-Loop region. Moreover, signatures of genetic botlleneck and also phylogeography of Audouin’s gull in the whole Mediterranean will be analyzed.
3rd Ecology and Evolutionary Biology Symposium (31 Ağustos - 01 Ekim 2016)

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Citation Formats
B. Ç. Yapan, U. Perktaş, A. Karahan, D. Oro, and K. Özkan, “Status And Structure Of Breeding Gull Populations In North Eastern Mediterranean Island,” presented at the 3rd Ecology and Evolutionary Biology Symposium (31 Ağustos - 01 Ekim 2016), Ankara, Türkiye, 2016, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/85056.