Daily and seasonal variation in non-acoustic communicative behaviors of male greater short-nosed fruit bats (Cynopterus sphinx)

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Hauptverfasser: Doss, D. Paramanantha Swami, Nagarajan-Radha, Venkatesh, Kandula, Sripathi
Format: Recurso digital
Veröffentlicht: Zenodo 2016
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author Doss, D. Paramanantha Swami
Nagarajan-Radha, Venkatesh
Kandula, Sripathi
author_facet Doss, D. Paramanantha Swami
Nagarajan-Radha, Venkatesh
Kandula, Sripathi
contents (Uploaded by Plazi for the Bat Literature Project) Monthly observations were made at a natural roosting site of Cynopterus sphinx, with a view to the behavior of males being observed over a period of one year. Here, we report seasonal, daily and inter-individual variation in three communicative behaviors engaged in by male bats. The frequency of male behaviors identified as scent-marking, vigorous wing-flapping and the making of an openwing gesture were found to vary seasonally, depending on the reproductive status of conspecific females in the study colony. The duration of scent-marking was markedly high during mating seasons, in comparison with wing-flapping and wing-gesturing. In mating seasons, the pattern to the daily variation in behavior correlated strongly with the gender of the responder present in the diurnal roost and/or colony. For instance, scent-marking and vigorous wing-flapping were more frequent during late-evening and early-morning hours, mostly when females were absent from the day roost, while male-male encounters were possible. In contrast, wing-gesturing was more frequent during morning and early-evening hours, when females were present in the day roost. The results from our study suggest that male scent-marking and wing-flapping are directed towards competitor males in the colony, with a view to resource-defense behavior being manifested. Furthermore, male wing-gesturing is predicted to be directed towards co-roosting females, with the aim in this case being for some form of social information to be communicated, particularly during the mating season. However, marginal inter-individual variation in the frequency of occurrence of behaviors between seasons was apparent, suggesting that these communicative behaviors could be tied to male-male competition in this species.
format Recurso digital
id zenodo_https___doi_org_10_5281_zenodo_13458297
institution Zenodo
language
publishDate 2016
publisher Zenodo
record_format zenodo
spellingShingle Daily and seasonal variation in non-acoustic communicative behaviors of male greater short-nosed fruit bats (Cynopterus sphinx)
Doss, D. Paramanantha Swami
Nagarajan-Radha, Venkatesh
Kandula, Sripathi
Biodiversity
Mammalia
Chiroptera
Chordata
Animalia
bats
bat
(Uploaded by Plazi for the Bat Literature Project) Monthly observations were made at a natural roosting site of Cynopterus sphinx, with a view to the behavior of males being observed over a period of one year. Here, we report seasonal, daily and inter-individual variation in three communicative behaviors engaged in by male bats. The frequency of male behaviors identified as scent-marking, vigorous wing-flapping and the making of an openwing gesture were found to vary seasonally, depending on the reproductive status of conspecific females in the study colony. The duration of scent-marking was markedly high during mating seasons, in comparison with wing-flapping and wing-gesturing. In mating seasons, the pattern to the daily variation in behavior correlated strongly with the gender of the responder present in the diurnal roost and/or colony. For instance, scent-marking and vigorous wing-flapping were more frequent during late-evening and early-morning hours, mostly when females were absent from the day roost, while male-male encounters were possible. In contrast, wing-gesturing was more frequent during morning and early-evening hours, when females were present in the day roost. The results from our study suggest that male scent-marking and wing-flapping are directed towards competitor males in the colony, with a view to resource-defense behavior being manifested. Furthermore, male wing-gesturing is predicted to be directed towards co-roosting females, with the aim in this case being for some form of social information to be communicated, particularly during the mating season. However, marginal inter-individual variation in the frequency of occurrence of behaviors between seasons was apparent, suggesting that these communicative behaviors could be tied to male-male competition in this species.
title Daily and seasonal variation in non-acoustic communicative behaviors of male greater short-nosed fruit bats (Cynopterus sphinx)
topic Biodiversity
Mammalia
Chiroptera
Chordata
Animalia
bats
bat
url https://doi.org/10.5281/zenodo.13458297