Confinement of a colony of Tadarida brasiliensis, a management alternative compatible with conservation
Published source details
Regidor H., Mosa S. & Núñez A. (2003) Confinamento de una colonia de Tadarida brasiliensis, una alternativa de manejo compatible con la conservación. Chiroptera Neotropical, 9, 157-162.
Published source details Regidor H., Mosa S. & Núñez A. (2003) Confinamento de una colonia de Tadarida brasiliensis, una alternativa de manejo compatible con la conservación. Chiroptera Neotropical, 9, 157-162.
This study is summarised as evidence for the following.
Relocate bat colonies roosting inside damsAction Link
Relocate bat colonies roosting inside dams
A study in 2002–2003 at one dam reservoir in Tucumán Province, Argentina (Regidor et al 2003) found that almost two-thirds of a large colony of Brazilian free-tailed bats Tadarida brasiliensis relocated to a different internal dam compartment after being displaced from the six compartments where the colony originally roosted. Approximately 1,400,000 Brazilian free-tailed bats were estimated to be roosting in one dam compartment five months after the displacement of a colony of approximately 2,000,000 bats from six of the seven dam compartments where it previously roosted. The study was conducted inside a dam wall (100 m long, 90 m high). The wall housed seven compartments used by Brazilian free-tailed bats. In October 2012, bats were deterred from six of the seven compartments using high intensity lights and naphthalene vapour. Once empty of bats, the dam compartments were sealed with metal doors. Bat numbers were estimated by three observers based on the area occupied by each single bat. Bats were counted three times between October 2002 and March 2003.
(Summarised by: Ricardo Rocha)