The criteria for species delimitation in birds have long been debated, and several recent studies have proposed new methods for such delimitation. On one side, there is a large consensus of investigators who believe that the only evidence that can be used to delimit species is molecular phylogenetics, and with increasing numbers of markers to gain better support, whereas on the other, there are investigators adopting alternative approaches based largely on phenotypic differences, including in morphology and communication signals. Yet, these methods have little to say about rapid differentiation in specific traits shown to be important in reproductive isolation. Here, we examine variation in phenotypic (morphology, plumage, and song) and genotypic (mitochondrial and nuclear DNA) traits among populations of yellow‐rumped tinkerbird Pogoniulus bilineatus in East Africa. Strikingly, song divergence between the P. b. fischeri subspecies from Kenya and Zanzibar and P. b. bilineatus from Tanzania is discordant with genetic distance, having occurred over a short time frame, and playback experiments show that adjacent populations of P. b. bilineatus and P. b. fischeri do not recognize one another's songs. While such rapid divergence might suggest a founder effect following invasion of Zanzibar, molecular evidence suggests otherwise, with insular P. b. fischeri nested within mainland P. b. fischeri. Populations from the Eastern Arc Mountains are genetically more distant, yet share the same song with P. b. bilineatus from Coastal Tanzania and Southern Africa, suggesting they would interbreed. We believe investigators ought to examine potentially rapid divergence in traits important in species recognition and sexual selection when delimiting species, rather than relying entirely on arbitrary quantitative characters or molecular markers.

BackgroundNon-communicable diseases (NCDs) are the leading causes of disease burden and mortality at the European level and in Cyprus. This research was conducted to map the research activities of Cypriot institutions in five NCDs, namely oncology, cardiovascular diseases, diabetes, mental health and respiratory conditions.MethodsFor the period 2002–2013, research in Cyprus was assessed on its biomedical outputs and compared to the rest of Europe relative to their GDP. The research output in the five NCDs was obtained and contrasted to their respective disease burdens. The results from each of the five NCDs showed the amount of cross-country collaboration with other researchers from other European countries and from the rest of the world, and the research level of the papers on a clinical to basic scale. For each NCD field the research application was assessed, whereas for oncology the research type was also assessed. Information was collected on the development of clinical guidelines, on Cypriot newspapers reporting on medical and policy documents and advisory committees’ output as well as research and funding organisations available in Cyprus, for potential evaluation of impact in health policy on the five NCDs.ResultsCypriot biomedical research output appeared appropriate in volume compared with its wealth and the expected value from a regression line for other European countries. However, it was focused particularly on the molecular mechanisms of transmittable or hereditary diseases, rather than on the five NCDs. Cyprus performs well in palliative care, which receives funding from several local charities and other non-profit organisations. Cyprus has the highest relative burden from diabetes in Europe, but the subject is largely neglected by researchers. Similarly, it suffers more from mental disorders than most of the rest of Europe, but the amount of research is relatively small. Respiratory conditions research is under-funded and under-researched too.ConclusionsThe biomedical research portfolio in Cyprus is adequate in volume, but not well fitted to its pattern of disease. The means whereby research can be used to improve healthcare in the country are also unsatisfactory, although the Ministry of Health is now developing a comprehensive plan which will include the development of clinical guidelines and proposals for the evaluation of how healthcare is delivered on the island.Electronic supplementary materialThe online version of this article (10.1186/s12961-018-0355-4) contains supplementary material, which is available to authorized users.

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