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2 Acta Chiropterologica

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A new species of Chaerephon (Molossidae) from Madagascar with notes on other members of the family

100%

Goodman S. M. , Cardiff S. G.

Acta Chiropterologica

2004

tom 06

nr 2

We describe a species of Chaerephon (Molossidae) new to science from western Madagascar. This bat differs from the other two Chaerephon occurring on the island and from comparably sized African and Asian Chaerephon based on measurements, pelage and wing coloration, and cranial and dental characters. Chaerephon sp. nov. occurs at three sites in the drier western portion of the island. We also provide some natural history and distributional information on other Malagasy members of this family.

The effect of tourist visits on the behavior of rousettus madagascariensis (Chiroptera: Pteropodidae) in the caves of Ankarana, Northern Madagascar

80%

Cardiff S. G. , Ratrimomanarivo F. H. , Goodman S. M.

Acta Chiropterologica

2012

tom 14

nr 2

Disturbance by tourists of bats in their day roosts represents a potential threat to the conservation of these mammals. We assessed the effect of experimental tourist visits on behavior of the Malagasy endemic Rousettus madagascariensis (Chiroptera: Pteropodidae) in the Ankarana National Park, northern Madagascar. We measured bat behavior, including time activity budgets, under two levels of experimental human visit proximity (far and near) and illumination (low and high). These visits caused an increase in bat flights and an increase in alertness in a frequently-visited colony with faint ambient daylight. The greatest response occurred for human approaches to 5–6 m that directly illuminated the bats and the least response occurred for approaches to 12–14 m that did not directly illuminate the bats. In an infrequently-visited colony with no ambient daylight, visits that remained 12–14 m away and did not illuminate the bats directly caused an increase in alert behavior and a decrease in bat grooming behavior. The difference in response between the colonies suggests that R. madagascariensis may demonstrate an attenuated response to some frequent human visits. Alternatively, colonies roosting with some ambient light may be less sensitive to disturbance from visits, and colonies with previous experience primarily with hunting visits may be more responsive to disturbance. Maintaining a minimum visit distance of 12 m and not illuminating the bats directly, as well as not opening other roost sites to tourism, is likely to help to limit disturbance of R. madagascariensis by tourists at Ankarana.