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Srigyan M, Samad A, Singh A, Karan J, Chandra A, Sinha PG, Kumar V, Das S, Thomas A, Suyesh R. Vocal repertoire of Microhyla nilphamariensis from Delhi and comparison with closely related M. ornata populations from the western coast of India and Sri Lanka. PeerJ 2024; 12:e16903. [PMID: 38562993 PMCID: PMC10984171 DOI: 10.7717/peerj.16903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 01/17/2024] [Indexed: 04/04/2024] Open
Abstract
Advertisement calls in frogs have evolved to be species-specific signals of recognition and are therefore considered an essential component of integrative taxonomic approaches to identify species and delineate their distribution range. The species rich genus Microhyla is a particularly challenging group for species identification, discovery and conservation management due to the small size, conserved morphology and wide distribution of its members, necessitating the need for a thorough description of their vocalization. In this study, we provide quantitative description of the vocal behaviour of Microhyla nilphamariensis, a widely distributed south Asian species, from Delhi, India, based on call recordings of 18 individuals and assessment of 21 call properties. Based on the properties measured acrossed 360 calls, we find that a typical advertisement call of M. nilphamariensis lasts for 393.5 ± 57.5 ms, has 17 pulses on average and produce pulses at rate of 39 pulses/s. The overall call dominant frequency was found to be 2.8 KHz and the call spectrum consisted of two dominant frequency peaks centered at 1.6 KHz and 3.6 KHz, ranging between 1.5-4.1 KHz. Apart from its typical advertisement call, our study also reveals the presence of three 'rare' call types, previously unreported in this species. We describe variability in call properties and discuss their relation to body size and temperature. We found that overall dominant frequency 1 (spectral property) was found to be correlated with body size, while first pulse period (temporal property) was found to be correlated with temperature. Further, we compare the vocal repertoire of M. nilphamariensis with that of the congener Microhyla ornata from the western coast of India and Sri Lanka and also compare the call properties of these two populations of M. ornata to investigate intra-specific call variation. We find statistically significant differentiation in their acoustic repertoire in both cases. Based on 18 call properties (out of 20), individuals of each locality clearly segregate on PCA factor plane forming separate groups. Discriminant function analysis (DFA) using PCA factors shows 100% classification success with individuals of each locality getting classified to a discrete group. This confirms significant acoustic differentiation between these species as well as between geographically distant conspecifics. The data generated in this study will be useful for comparative bioacoustic analysis of Microhyla species and can be utilized to monitor populations and devise conservation management plan for threatened species in this group.
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Affiliation(s)
- Megha Srigyan
- Department of Environmental Sciences, Sri Venkateswara College, University of Delhi, New Delhi, Delhi, India
- Department of Biochemistry, Sri Venkateswara College, University of Delhi, New Delhi, Delhi, India
- Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, Santa Cruz, CA, United States of America
| | - Abdus Samad
- Department of Environmental Sciences, Sri Venkateswara College, University of Delhi, New Delhi, Delhi, India
- Biological Sciences, Sri Venkateswara College, University of Delhi, New Delhi, Delhi, India
| | - Abhishek Singh
- Department of Environmental Sciences, Sri Venkateswara College, University of Delhi, New Delhi, Delhi, India
- Biological Sciences, Sri Venkateswara College, University of Delhi, New Delhi, Delhi, India
| | - Jyotsna Karan
- Department of Environmental Sciences, Sri Venkateswara College, University of Delhi, New Delhi, Delhi, India
- Biological Sciences, Sri Venkateswara College, University of Delhi, New Delhi, Delhi, India
| | - Abhishek Chandra
- Department of Environmental Sciences, Sri Venkateswara College, University of Delhi, New Delhi, Delhi, India
| | - Pooja Gokhale Sinha
- Department of Botany, Sri Venkateswara College, University of Delhi, New Delhi, Delhi, India
| | - Vineeth Kumar
- Department of Biology, Center for Advanced Learning, Mangalore, Karnataka, India
| | - Sandeep Das
- Forest Ecology and Biodiversity Conservation Division, Kerala Forest Research Institute, Peechi, Kerala, India
- Department of Zoology, St Joseph’s College (Autonomous), Irinjalakuda, Thrissur, Kerala, India
| | - Ashish Thomas
- Department of Environmental Studies, SGND Khalsa College, University of Delhi, Delhi, India
| | - Robin Suyesh
- Department of Environmental Sciences, Sri Venkateswara College, University of Delhi, New Delhi, Delhi, India
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Annibale FS, de Sousa VT, da Silva FR, Murphy CG. Geographic Variation in the Acoustic Signals of Dendropsophus nanus (Boulenger 1889) (Anura: Hylidae). HERPETOLOGICA 2020. [DOI: 10.1655/herpetologica-d-19-00046.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Fabiane S. Annibale
- PPG Biologia Animal, Departamento de Zoologia e Botânica, Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), São José do Rio Preto, SP 15054-000, Brasil
| | - Verônica T.T. de Sousa
- PPG Ecologia e Evolução, Departamento de Ecologia, Universidade Federal de Goiás (UFG), Goiânia, GO 74690-900, Brasil
| | - Fernando R. da Silva
- Laboratório de Ecologia Teórica: Integrando Tempo, Biologia e Espaço (LET.IT.BE), Departamento de Ciências Ambientais, Universidade Federal de São Carlos (UFSCar), Sorocaba, SP 18052-780, Brasil
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Hernández-Herrera CI, Pérez-Mendoza HA. Acoustic and morphological variation on two populations of Dryophytes arenicolor in central México. BIOACOUSTICS 2020. [DOI: 10.1080/09524622.2020.1760937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | - Hibraim A. Pérez-Mendoza
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla de Baz, Mexico
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Sathyan R, Engelbrecht A, Couldridge VC. Morphological, acoustic and genetic divergence in the bladder grasshopperBullacris unicolor. ETHOL ECOL EVOL 2017. [DOI: 10.1080/03949370.2017.1287915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Rekha Sathyan
- Department of Biodiversity and Conservation Biology, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa
| | - Adriaan Engelbrecht
- Department of Biodiversity and Conservation Biology, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa
| | - Vanessa C.K. Couldridge
- Department of Biodiversity and Conservation Biology, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa
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