PIT-tag as permanent marking method on Myotis chiloensis (Chiroptera: Vespertilionidae) and Tadarida brasiliensis (Chiroptera: Molossidae) in central Chile
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marking methods
Mediterranean ecosystem
small mammals ecosistema mediterráneo
pequeños mamíferos
métodos de marcaje

How to Cite

Escobar, M. A. H.; Puelma-Diez, F.; Villaseñor, N. R. PIT-Tag As Permanent Marking Method on Myotis Chiloensis (Chiroptera: Vespertilionidae) and Tadarida Brasiliensis (Chiroptera: Molossidae) in Central Chile. Gayana 2022, 86, 40-46.


Tracking and monitoring of bat populations have frequently involved the use of inappropriate marking methods. Due to their small size, passive integrated transponders (PIT-tag) provide a permanent mark for small vertebrate species through their sub-dermal implantation. However, few studies assess their effects on bats. Here we present the first study on the effect of PIT-tags on bats in Latin America. We evaluated the effect of the use of PIT-tag as a permanent mark on the recapture rate and body condition in Myotis chiloensis and Tadarida brasiliensis in central Chile. For both species, we marked a group of individuals with PIT-tag and left an equivalent group without a mark. In six surveys, between January and March 2019, we captured a total of 262 individuals, 176 corresponding to the species M. chiloensis and 86 to T. brasiliensis, with a total of 43 and 33 recaptures, respectively. The use of PIT-tag had no effect neither on the recapture rate nor body condition for both bat species. Although more investigations are required, our results suggested that the use of PIT-tag as a marking method is adequate and safe for this bat species and it could be implemented in long-term studies.

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Copyright (c) 2022 Martín A. H. Escobar, Francisca Puelma-Diez, Nélida R. Villaseñor


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