Between-year vocal aging in female red deer (Cervus elaphus)

Volodin, Ilya A.; Sibiryakova, Olga V.; Vasilieva, Nina A.; Volodina, Elena V.; Matrosova, Vera A.; García, Andrés J.; Pérez‐Barbería, F. Javier; Gallego, Laureano; Landete‐Castillejos, Tomás

doi:10.1186/s13104-018-3833-4

Cited by 4 publications

(2 citation statements)

References 36 publications

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“…We classified the chirps from the second recording with DFA functions derived from the first recording, considering the value of correct cross‐validation as a measure of the retention of individuality over time (Briefer et al, 2010; Matrosova, Volodin, Volodina, Vasilieva, & Kochetkova, 2010; Smirnova et al, 2016). We used a repeated‐measures ANOVA controlled for individuality, to compare the values of correct assignment of chirps to correct callers between recordings of different years (Volodin et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

Advertising sex and individual identity by long‐distance chirps in wild‐living mature cheetahs (Acinonyx jubatus)

et al. 2023

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Adult cheetahs (Acinonyx jubatus) use long‐distance chirps for calling toward coalition partners (males), mates (both sexes), and cubs (females). Previously, these vocalizations were only investigated in captivity. This study estimates individual and sex‐related acoustic variation of the long‐distance chirps of 20 mature cheetahs (eight males and 12 females older than 4 years) in their natural habitats in Kenya. Male chirps were longer in duration and lower in the peak frequency and all fundamental frequency variables than female chirps. The average value for assignment of the chirps to correct sex with Discriminant Function Analysis (DFA) of 93.8% was significantly higher than by‐chance level of 52.9%. The average value of correct assignment of the chirps to individual with DFA was 79.5%, which was significantly higher than the level by chance of 14.8%. For 10 cheetahs recorded twice with time space of one or 2 years, DFA showed high values of correct assignment of the chirps to individual for both years (91.4% in the first year and 83.9% in the second year of recording), but cross‐validation of the chirps recorded in the second year by discriminant functions created for the chirps of the first year showed a dramatic decrease of correct assignment to the level expected by chance (27.2%). We discuss that long‐distance chirps of wild mature cheetahs provide reliable cues to sex and may also encode caller individuality, although this is not stable over time.

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Section: Methodsmentioning

confidence: 99%

Advertising sex and individual identity by long‐distance chirps in wild‐living mature cheetahs (Acinonyx jubatus)

et al. 2023

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“…In order to do so, we measured 6 variables: (1) peak frequency (PF), (2) fundamental frequency (F 0 ), (3) maximum frequency of fundamental frequency (F 0max ), (4) minimum frequency of fundamental frequency (F 0min ), (5) duration of syllable (T), and (6) interval of syllables (TI, Table 5 ; Fig. 3 ), and we chose these variables following some previous similar studies [ 2 , 25 , 50 , 51 ]. We identified 4 different types of calls consisting of repeated, single-syllable calls from 61 recordings of 30 breeding adults (see also Supplemental Table S2 ), which were called a (46 recordings including 517 calls from 23 individuals), b (2 recordings; 215 calls; 2 individuals), c (8 recordings; 59 calls; 4 individuals), and d (5 recordings; 18 calls; 4 individuals), 809 calls in total.…”

Section: Methodsmentioning

confidence: 99%

A small vocal repertoire during the breeding season expresses complex behavioral motivations and individual signature in the common coot

Fu¹,

Kathait²,

Lu³

et al. 2021

BMC Zool

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Background Although acoustic communication plays an essential role in the social interactions of Rallidae, our knowledge of how Rallidae encode diverse types of information using simple vocalizations is limited. We recorded and examined the vocalizations of a common coot (Fulica atra) population during the breeding season to test the hypotheses that 1) different call types can be emitted under different behavioral contexts, and 2) variation in the vocal structure of a single call type may be influenced both by behavioral motivations and individual signature. We measured a total of 61 recordings of 30 adults while noting the behavioral activities in which individuals were engaged. We compared several acoustic parameters of the same call type emitted under different behavioral activities to determine how frequency and temporal parameters changed depending on behavioral motivations and individual differences. Results We found that adult common coots had a small vocal repertoire, including 4 types of call, composed of a single syllable that was used during 9 types of behaviors. The 4 calls significantly differed in both frequency and temporal parameters and can be clearly distinguished by discriminant function analysis. Minimum frequency of fundamental frequency (F0min) and duration of syllable (T) contributed the most to acoustic divergence between calls. Call a was the most commonly used (in 8 of the 9 behaviors detected), and maximum frequency of fundamental frequency (F0max) and interval of syllables (TI) contributed the most to variation in call a. Duration of syllable (T) in a single call a can vary with different behavioral motivations after individual vocal signature being controlled. Conclusions These results demonstrate that several call types of a small repertoire, and a single call with function-related changes in the temporal parameter in common coots could potentially indicate various behavioral motivations and individual signature. This study advances our knowledge of how Rallidae use “simple” vocal systems to express diverse motivations and provides new models for future studies on the role of vocalization in avian communication and behavior.

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Nocturnal chats of farmed animals: non-rutting vocalisations of male Iberian red deer, Cervus elaphus hispanicus

et al. 2023

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Context Captive environment may inhibit the emission of some call types by non-domesticated farm and zoo animals; so, their complete vocal repertoires remain unknown. Automated acoustic recording might help fill this gap of knowledge. Aim The aim of this study was to describe vocalisations of farmed Iberian red deer, Cervus elaphus hispanicus, stags out of the autumnal rutting period (in summer and in winter) applying the manual and automated acoustic recording. Methods In this pilot study, automated audio recording of undisturbed animals followed with spectrographic analysis showed hidden parts of social acoustic communication in farmed male Iberian red deer in non-breeding period. Key results We detected three call types (roars, contact calls and bellows). Stag contact calls and bellows were described in the first time in red deer. Non-rutting roars were acoustically similar with rutting roars reported for wild-living Iberian red deer stags but of lower-frequency than were stag rutting roars recorded on the same farm in previous studies. Stag contact calls were reminiscent of hind contact calls recorded on the same farm in previous studies, but lower in frequency and shorter. Stag bellows were acoustically similar with bellows of male domestic cattle. Conclusion This study reveals previously unknown parts of male red deer vocal repertoire. Implications The lack of certain components of behavioural and vocal repertoire may indicate potential welfare problems in farmed and zoo animals.

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Between-year vocal aging in female red deer (Cervus elaphus)

Cited by 4 publications

References 36 publications

Advertising sex and individual identity by long‐distance chirps in wild‐living mature cheetahs (Acinonyx jubatus)

Advertising sex and individual identity by long‐distance chirps in wild‐living mature cheetahs (Acinonyx jubatus)

A small vocal repertoire during the breeding season expresses complex behavioral motivations and individual signature in the common coot

Nocturnal chats of farmed animals: non-rutting vocalisations of male Iberian red deer, Cervus elaphus hispanicus

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