Characterization of Yellow Seahorse <i>Hippocampus kuda</i> feeding click sound signals in a laboratory environment: an application of probability density function and power spectral density analyses

Chakraborty, Bhaskar; Saran, A.K.; Kuncolienker, D. Sinai; Sreepada, R.A.; Haris, K.; Fernandes, William

doi:10.1080/09524622.2013.796571

Cited by 10 publications

(14 citation statements)

References 22 publications

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“…The MFDFA followed herein has several advantages over the standard power spectral density (PSD) analyses, because it reveals scaling behavior and long-range power-law correlation properties in the data. Previous analyses by Chakraborty et al (2014b) have focused on the quantification of single power-law exponent β (i.e., monofractal feature) to characterize the seahorse clicks. On the other hand, results of the present study affirm that the clicks are intrinsically complex and require multiple exponents for its characterization.…”

Section: Resultsmentioning

confidence: 99%

“…The frequency range of H. kuda analyzed in the present study is consistent with the observations reported by Colson et al (1998). The spectrogram analyses appropriately reveal high frequency (>1 kHz) feeding clicks in H. kuda (Chakraborty et al, 2014b) values ( q ranging between -5 to 5) corresponding to the individual seahorse further reveals the apparent multifractal behavior of the feeding clicks [ Fig. 4(b)].…”

Section: B Frequency Range Characteristic Of Seahorse Feeding Clicksmentioning

confidence: 91%

“…The hydrophone was connected to an analog-to-digital (A/D) converter installed in a personal computer (PC). The digital data were transferred to the PC via a parallel port interface at a sampling frequency of 10 kHz (Chakraborty et al, 2014b). The passive acoustic recordings were carried out in the aquaculture laboratory complex of CSIR-National Institute of Oceanography, India, where the techniques for standardization of captive breeding, rearing and culture of seahorse species are being established (Pawar et al, 2011).…”

Section: A Seahorse Feeding Click Recordingmentioning

confidence: 99%

“…The seahorse clicks were studied for several objectives namely: to understand the effect of induction of the seahorse to a new environment, courtship and copulation (Fish and Mowbray, 1970), behavior and physiology in captive environment (Anderson, 2009) and during feeding (Colson et al, 1998;Anderson, 2009;Chakraborty et al, 2014b). Emphasizing on the feeding behavior, Colson et al (1998) had conducted a detailed study to substantiate the stridulation hypothesis of sound production, using a novel combination of kinematic, surgical, acoustic and morphological analyses.…”

Section: B Frequency Range Characteristic Of Seahorse Feeding Clicksmentioning

confidence: 99%

“…In the present study, nonetheless, the feeding clicks of seahorse Hippocampus kuda (H. kuda) belonging to the family Syngnathidae are recorded in a captive environment. Seahorses typically generate stridulatory sounds, akin to the sound of snapping fingers, in a variety of circumstances, e.g., during feeding, courtship and copulation, induction of the seahorse to a new environment and inter-male competition (Colson et al, 1998;Anderson, 2009;Chakraborty et al, 2014b). The recorded feeding clicks of H. kuda are analyzed to characterize the phase couplings [depicted in Fig.…”

Section: Introductionmentioning

confidence: 99%

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Multifractal detrended fluctuation analysis to characterize phase couplings in seahorse (Hippocampus kuda) feeding clicks

Haris

Chakraborty

Menezes

et al. 2014

The Journal of the Acoustical Society of America

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Nonlinear phenomena in animal vocalizations fundamentally includes known features, namely, frequency jump, subharmonics, biphonation, and deterministic chaos. In the present study, the multifractal detrended fluctuation analysis (MFDFA) has been employed to characterize the phase couplings revealed in the feeding clicks of Hippocampus kuda yellow seahorse. The fluctuation function Fq(s), generalized Hurst exponent h(q), multifractal scaling exponent τ(q), and the multifractal spectrum f(α) calculated in the procedure followed were analyzed to comprehend the underlying nonlinearities in the seahorse clicks. The analyses carried out reveal long-range power-law correlation properties in the data, substantiating the multifractal behavior. The resulting h(q) spectrum exhibits a distinct characteristic pattern in relation to the seahorse sex and size, and reveals a spectral blind spot in the data that was not possible to detect by conventional spectral analyses. The corresponding multifractal spectrum related width parameter Δh(q) is well clustered, defining the individual seahorse clicks. The highest degree of multifractality is evident in the 18 cm male seahorse, signifying greater heterogeneity. A further comparison between the seahorse body size and weight (wet) with respect to the width parameter Δh(q) and the second-order Hurst exponent h(q=2) underscores the versatility of MFDFA as a robust statistical tool to analyze bioacoustic observations.

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Section: Resultsmentioning

confidence: 99%

Section: B Frequency Range Characteristic Of Seahorse Feeding Clicksmentioning

confidence: 91%

Section: A Seahorse Feeding Click Recordingmentioning

confidence: 99%

Section: B Frequency Range Characteristic Of Seahorse Feeding Clicksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multifractal detrended fluctuation analysis to characterize phase couplings in seahorse (Hippocampus kuda) feeding clicks

Haris

Chakraborty

Menezes

et al. 2014

The Journal of the Acoustical Society of America

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Acoustic Signalling in Female Fish

Ladich

2015

Sound Communication in Fishes

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Sound production in male and female corkwing wrasses and its relation to visual behaviour

2020

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In fish, social interactions are commonly accompanied by acoustic signalling. Males have been found to produce sounds in a large range of species, but female sounds have received considerably less attention. But even in males, there remain significant taxonomical gaps, e.g. in one of the largest fish families, the wrasses. Here, we investigate sound production in territorial males and females of the corkwing wrasse in a field study in Norway. We complemented an in-depth analysis of the visual and acoustic behavioural repertoire of territorial males by descriptions of female behaviours. Males as well as females produced sounds in courtship and agonistic contexts. We recorded four types of sounds and found significant differences between male and female sound properties. We hereby provide one of the first descriptions of sound production in wrasses and, to our knowledge, the first one to also investigate female sound production. Our study shows that wrasses are an underappreciated family when it comes to sound production. With a repertoire of four different calls, corkwing wrasses are remarkably versatile among fishes. Our results highlight the potential and importance of future research about sound communication in neglected taxa, and in both sexes.

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Characterization of Yellow Seahorse Hippocampus kuda feeding click sound signals in a laboratory environment: an application of probability density function and power spectral density analyses

Cited by 10 publications

References 22 publications

Multifractal detrended fluctuation analysis to characterize phase couplings in seahorse (Hippocampus kuda) feeding clicks

Multifractal detrended fluctuation analysis to characterize phase couplings in seahorse (Hippocampus kuda) feeding clicks

Acoustic Signalling in Female Fish

Sound production in male and female corkwing wrasses and its relation to visual behaviour

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