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2 Acta Chiropterologica

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Empirical assessment of non-invasive population genetics in bats: Comparison of DNA quality from faecal and tissue samples

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Boston E. S. M. , Puechmaille S. J. , Scott D. D. , Buckley D. J. , Lundy M. G. , Montgomery I. W. , Prodohl P. A. , Teeling E. C.

nr 1

Non-invasive population genetics has become a valuable tool in ecology and conservation biology, allowing genetic studies of wild populations without the need to catch, handle or even observe the study subjects directly. We address some of the concerns regarding the limitations of using non-invasive samples by comparing the quality of population genetic information gained through DNA extracted from faecal samples and biopsy samples of two elusive bat species, Myotis mystacinus and Myotis nattereri. We demonstrate that DNA extracted from faeces and tissue samples gives comparable results for frequency based population genetic analyses, despite the occurrence of genotyping errors when using faecal DNA. We conclude that non-invasive genetic sampling for population genetic analysis in bats is viable, and although more labour-intensive and expensive, it is an alternative to tissue sampling, which is particularly pertinent when specimens are rare, endangered or difficult to capture.

The status of the cryptic bat species, Myotis mystacinus and Myotis brandtii in Ireland

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Boston E. S. M. , Buckley D. J. , Bekaert M. , Gager Y. , Lundy M. G. , Scott D. D. , Prodohl P. A. , Montgomery W. I. , Marnell F. , Teeling E. C.

nr 2

The recent identification of Myotis brandtii in Ireland raised the possibility that many roosts previously identified as M. mystacinus had the potential of being misidentified M. brandtii. Thus, the distribution and population estimates for M. mystacinus may have been over-estimated, while M. brandtii may have been under-estimated. Results from an all Ireland genetic survey of known M. mystacinus maternity roosts confirm that no long term misidentification has taken place. All specimens caught and sampled were M. mystacinus. Additonally, no further records of M. brandtii were found during six nights of woodland trapping using the acoustic lure. While the status of M. mystacinus in Ireland is now listed as ‘least concern’ in the Irish Red List, M. brandtii is listed as ‘data deficient’ and cannot currently be considered a resident species.