Analysis of the diet of Daubenton’s batMyotis daubentonii in Ireland
- 205 Downloads
The diet of Daubenton’s batMyotis daubentonii (Kuhl, 1817), which takes prey by aerial hawking and from the surface of water, was investigated by analysis of faeces collected in summer at 7 roosts, all close to rivers in pastoral land, in three widely-separated districts in Ireland. Forty-seven categories of arthropod prey were identified; several were insect taxa found in and around water. Most categories were recovered at most roosts, but mainly in small amounts. The main categories were the same throughout, accounting for 82% of the diet by percentage frequency in droppings for pooled data: Chironomidae/Ceratopogonidae 24% (adults 14%, preadult stages 10%), other nematoceran Diptera 21%, other Diptera 10%, and Trichoptera 26% (adults 20%, preadult 6%). A quarter of the prey had evidently been obtained from the water’s surface (eg aquatic insects, their larvae and pupae). Although consumption of several food items varied significantly by month at one or more roosts, little of such variation was consistent between roosts.
Key wordsMyotis daubentonii diet food Ireland
Unable to display preview. Download preview PDF.
- Beck A. 1995. Fecal analyses of European bat species. Myotis 32–33: 109–119.Google Scholar
- Chinery M. 1993. Insects of Britain and Northern Europe. 3rd edition. Collins, London: 1–320.Google Scholar
- Frost W. E. 1939. River Liffey Survey. II. The food consumed by the brown trout (Salmo trutta L.) in acid and alkaline water. Proceedings of the Royal Irish Academy 45B: 139–206.Google Scholar
- Kokurewicz T. 1995. Increased population of Daubenton’s bat [Myotis daubentoni (Kuhl, 1819)] (Chiroptera: Vespertilionidae) in Poland. Myotis 32–33: 155–161.Google Scholar
- Lucey J., Bowman J. J., Clabby K. J., Cunningham P., Lehane M., MacCárthaigh M., McGarrigle M. L. and Toner P. F. 1999. Water quality in Ireland. Environmental Protection Agency, Wexford: 1–292.Google Scholar
- Maitland P. S. and Campbell R. N. 1992. Freshwater fishes of the British Isles. Collins, London: 1–368.Google Scholar
- Shiel C., McAney C., Sullivan C. and Fairley J. 1997. Identification of arthropod fragments in bat droppings. Mammal Society, London: 1–56.Google Scholar
- Taake K.-H. 1992. Strategien der Ressourcennutzung an Waldgewässern jagender Fledermäuse (Chiroptera: Vespertilionidae). Myotis 30: 7–73.Google Scholar
- Whitaker J. O. 1988. Food habits analysis of insectivorous bats. [In: Ecological and behavioural methods for the study of bats. T. H. Kunz, ed]. Smithsonian Institute, Washington, D.C: 171–189.Google Scholar