Ocean warming and evolutionary responses: Life history adaptations in two genetic distinct colour morphs of Common Guillemots. ...

• Main Authors: Reiertsen, Tone, Erikstad, Kjell Einar, Harris, Mike, Myksvoll, Mari, Daunt, Francis, Ballesteros, Manuel, Moe, Børge, Barrett, Rob, Newell, Mark, Wanless, Sarah
• Format: Conference Object
• Language: unknown
• Published: ASC 2014 - Theme session J 2023
• Subjects: Pressures, impacts, conservation, and management; Hornøya; Norway; common guillemot; North Atlantic; Uria aalge; uria
• Online Access: https://dx.doi.org/10.17895/ices.pub.24752586; https://ices-library.figshare.com/articles/conference_contribution/Ocean_warming_and_evolutionary_responses_Life_history_adaptations_in_two_genetic_distinct_colour_morphs_of_Common_Guillemots_/24752586

No abstracts are to be cited without prior reference to the author. The use of colour polymorphism as a phenotypic genetic marker in relation to life-history strategies and climatic factors is a promising way to study the effects of global warming on micro-evolutionary processes within populations and identifying which ecological processes are underpinning the occurring changes. The North Atlantic common guillemot Uria aalge possesses two genetically different colour morphs; the bridled and the unbridled morph. The frequency of the two morphs follows a north south gradient, with the frequency of bridled birds increasing with latitude. We show how fluctuations in sea surface temperature affects life-history traits of these morphs differently in two colonies with different frequency; the Isle of May in Scotland and Hornøya in Northeastern Norway. We combined non-breeding distribution data from geolocators, with Sea Surface Temperature and long-term time series data on adult survival (29 and 22 years). ...