Group-Specific Signatures in the Echolocation Calls of Female Little Brown Bats (Myotis lucifugus) are Not an Artefact of Clutter at the Roost Entrance
| Autor: | James F. Hare, Joel W. Jameson |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Acta Chiropterologica. 11:163-172 |
| ISSN: | 1733-5329 1508-1109 |
| DOI: | 10.3161/150811009x465785 |
| Popis: | In species where conspecifics form discrete social groups, the production of signals advertising group membership may promote cohesion among group members. Female little brown bats (Myotis lucifugus) show high fidelity to maternity roost sites where they aggregate in large numbers every spring to rear young. While the presence of group-specific signatures has been demonstrated in the echolocation calls of this species, differential clutter at recording sites may account for the observed differences. Bats optimize their ability to maneuver and detect prey within a given environment by tailoring their echolocation calls to physical attributes of that environment. Therefore, if clutter is responsible for the apparent group specificity in the calls of little brown bats, groups of bats experiencing similar levels of clutter at roost entrances should emit similar calls. We examined the effect of differential clutter on the emergence calls of M. lucifugus by comparing recorded echolocation calls of bats emerging... |
| Databáze: | OpenAIRE |
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