Individual variation in the echolocation calls of three sympatric Indian hipposiderid bats, and an experimental attempt to jam bat echolocation

G Jones; K Sripathi; Dean Andrew Waters; G Marimuthu

Individual variation in the echolocation calls of three sympatric Indian hipposiderid bats, and an experimental attempt to jam bat echolocation

G Jones, K Sripathi, Dean Andrew Waters, G Marimuthu

Environment and Geography

Research output: Contribution to journal › Article › peer-review

Abstract

We studied three species of hipposiderid bats coexisting in southern India. The species were scaled versions of similar wing shape, and were separated from one another in terms of echolocation call frequency and body size. All species used echolocation signals which consisted of constant-frequency (CF) components with frequency-modulated (FM) tails. The three species were Hipposideros speoris (length (FAL) = ca. 51 mm, CF = ca. 138 kHz) H. fulvus (FAL = ca. 39 mm, CF = ca. 157 kHz) and H. ater (FAL = ca. 36 mm, CF = ca. 166 kHz). In H. speoris no sexual size dimorphism was apparent, but males emitted higher CFs on average than females. Tn H. fulvus, females were the larger sex, but there was no difference in CF between sexes. In both sexes, CF was positively correlated with body condition. We tested whether individuals shifted personal CFs when Eying in groups in H, speoris, and found evidence only for small-scale (

Original language	English
Pages (from-to)	347-361
Number of pages	15
Journal	FOLIA ZOOLOGICA
Volume	43
Issue number	4
Publication status	Published - 1994

Cite this

@article{62ea28778fa04eb6904e931eb9b7bfea,

title = "Individual variation in the echolocation calls of three sympatric Indian hipposiderid bats, and an experimental attempt to jam bat echolocation",

abstract = "We studied three species of hipposiderid bats coexisting in southern India. The species were scaled versions of similar wing shape, and were separated from one another in terms of echolocation call frequency and body size. All species used echolocation signals which consisted of constant-frequency (CF) components with frequency-modulated (FM) tails. The three species were Hipposideros speoris (length (FAL) = ca. 51 mm, CF = ca. 138 kHz) H. fulvus (FAL = ca. 39 mm, CF = ca. 157 kHz) and H. ater (FAL = ca. 36 mm, CF = ca. 166 kHz). In H. speoris no sexual size dimorphism was apparent, but males emitted higher CFs on average than females. Tn H. fulvus, females were the larger sex, but there was no difference in CF between sexes. In both sexes, CF was positively correlated with body condition. We tested whether individuals shifted personal CFs when Eying in groups in H, speoris, and found evidence only for small-scale (",

author = "G Jones and K Sripathi and Waters, {Dean Andrew} and G Marimuthu",

year = "1994",

language = "English",

volume = "43",

pages = "347--361",

journal = "FOLIA ZOOLOGICA",

issn = "0139-7893",

publisher = "Academy of Sciences of the Czech Republic",

number = "4",

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TY - JOUR

T1 - Individual variation in the echolocation calls of three sympatric Indian hipposiderid bats, and an experimental attempt to jam bat echolocation

AU - Jones, G

AU - Sripathi, K

AU - Waters, Dean Andrew

AU - Marimuthu, G

PY - 1994

Y1 - 1994

N2 - We studied three species of hipposiderid bats coexisting in southern India. The species were scaled versions of similar wing shape, and were separated from one another in terms of echolocation call frequency and body size. All species used echolocation signals which consisted of constant-frequency (CF) components with frequency-modulated (FM) tails. The three species were Hipposideros speoris (length (FAL) = ca. 51 mm, CF = ca. 138 kHz) H. fulvus (FAL = ca. 39 mm, CF = ca. 157 kHz) and H. ater (FAL = ca. 36 mm, CF = ca. 166 kHz). In H. speoris no sexual size dimorphism was apparent, but males emitted higher CFs on average than females. Tn H. fulvus, females were the larger sex, but there was no difference in CF between sexes. In both sexes, CF was positively correlated with body condition. We tested whether individuals shifted personal CFs when Eying in groups in H, speoris, and found evidence only for small-scale (

AB - We studied three species of hipposiderid bats coexisting in southern India. The species were scaled versions of similar wing shape, and were separated from one another in terms of echolocation call frequency and body size. All species used echolocation signals which consisted of constant-frequency (CF) components with frequency-modulated (FM) tails. The three species were Hipposideros speoris (length (FAL) = ca. 51 mm, CF = ca. 138 kHz) H. fulvus (FAL = ca. 39 mm, CF = ca. 157 kHz) and H. ater (FAL = ca. 36 mm, CF = ca. 166 kHz). In H. speoris no sexual size dimorphism was apparent, but males emitted higher CFs on average than females. Tn H. fulvus, females were the larger sex, but there was no difference in CF between sexes. In both sexes, CF was positively correlated with body condition. We tested whether individuals shifted personal CFs when Eying in groups in H, speoris, and found evidence only for small-scale (

M3 - Article

SN - 0139-7893

VL - 43

SP - 347

EP - 361

JO - FOLIA ZOOLOGICA

JF - FOLIA ZOOLOGICA

IS - 4

ER -