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Coastal cliffs on islands as foraging habitat for bats

100%

Ancillotto L., Rydell J., Nardone V., Russo D.

Acta Chiropterologica

2014

tom 16

nr 1

Small islands usually show simplified ecosystems with limited availability of suitable foraging habitats for bats, thus habitat selection on islands may differ compared to the mainland. Habitats that are marginal on the mainland may be important on islands. The island of Capri consists, to a large extent, of steep limestone cliffs and Mediterranean shrubland, with virtually no forests or other habitats preferred by bats on the mainland. In this study we tested the hypothesis that in resource-limited systems, such as islands, habitats generally deemed of minor value for bat foraging, such as cliffs, may become important. We conducted an acoustic survey of bats in Capri (SW Italy), comparing their use of Mediterranean shrubland and limestone cliffs. We found that cliffs provided the preferred foraging habitat in four of the five species tested. Noticeably, even the barbastelle bat Barbastella barbastellus, normally considered a forest specialist, selected coastal cliffs as foraging habitat. Our observations indicate that the paucity of foraging habitats on islands may strongly alter the habitat use by bats. This has important implications for conservation of bats in insular environments.

Reappraisal of an old cheap method for marking the European hedgehog

88%

Mori E., Menchetti M., Bertolino S., Mazza G., Ancillotto L.

Acta Theriologica

2015

tom 60

nr 2

Marking quilled animals for individual recognition may be challenging. This is particularly true for European hedgehogs Erinaceus europaeus, whose defense mechanism involves the concealment of muzzle and underparts. Heat-shrink tubes have been widely used to mark quills, but they do not adapt to the morphological structure of the spines and are rapidly lost, thus reducing method effectiveness. We adapted a cheap and ethical method used to mark crested porcupine quills, which involves the use of colored adhesive tapes applied to quills. The retention period of this marking technique lasts up to 9 months, allowing short-term field studies and possibly dispersal distances measurements. The method could be improved by doubling the number of marked spines and by reapplying adhesive tape at every recapture event. Moreover, the use of a marking code can be obtained by subdividing the body of the hedgehog into six body areas, to increase the number of marking possibilities, through the combination of tape colors and body areas.

Ograniczanie wyników

1 Acta Chiropterologica

1 Acta Theriologica

2 Ancillotto L.

1 Bertolino S.

1 Mazza G.

1 Menchetti M.

1 Mori E.

1 Nardone V.

1 Russo D.

1 Rydell J.

1 2015

1 2014

Wyniki wyszukiwania

Coastal cliffs on islands as foraging habitat for bats

Reappraisal of an old cheap method for marking the European hedgehog