New review paper on polymorphisms and speciation

May 5, 2020

TREE figure

In a new paper in Trends in Ecology and Evolution, Dr Gabriel Jamie and Dr Joana Meier explore the phenomenon that the same polymorphisms often recur in many members of a species radiation (e.g. colour/pattern morphs, heterostyly, mating types, shell chirality). This phenomenon is puzzling because speciation often represents a barrier to the inheritance of the ancestral genetic variation underpinning polymorphisms. Generally, only a subset of the ancestral population go on to become founders of the new species. They outline the characteristics of polymorphisms that help their underlying genetic variation get inherited from ancestral standing variation, re-introduced through introgression or re-invented through mutation and also explore the factors influencing whether the requisite balancing selection operates widely across daughter species so that polymorphisms are maintained in many members of the radiation.

News

New paper on host-specific mimicry by indigobird and whydah chicks

In a new paper published in Evolution, Dr Gabriel Jamie along with Silky Hamama, Collins Moya and Prof. Claire Spottiswoode from the African Cuckoos team and collaborators from University of Puerto Rico (Steven Van Belleghem), Princeton University (Dr Cassie Stoddard and Dr Ben Hogan) and University of Cambridge (Professor Rebecca Kilner) provide evidence of host-specific mimicry in the indigobirds and whydahs of Africa. Building on the pioneering work of Robert Payne and Jürgen Nicolai, they provide quantitative evidence that nestling Vidua finches mimic the patterns, colours and begging calls of their host’s nestling, and qualitative evidence of mimicry of host movements.

Pick of the month in Trends in Ecology and Evolution

Dr Gabriel Jamie and Dr Joana Meier’s paper “The Persistence of Polymorphisms across Species Radiations” has been selected by Trends in Ecology and Evolution as the journal Editor’s pick of the month. Read the full paper here: https://tinyurl.com/y29l4ygr

Launching Honeyguiding.me for all bird enthusiasts in Africa!

Honeyguiding.me is a citizen science project for which we welcome all records of Greater Honeyguides anywhere in Africa. Visit our Honeyguiding.me project site in English, en français & em Português!
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