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Registros recuperados: 11
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A memory like a female Fur Seal: long-lasting recognition of pup's voice by mothers Anais da ABC (AABC)
Mathevon,Nicolas; Charrier,Isabelle; Aubin,Thierry.
In colonial mammals like fur seals, mutual vocal recognition between mothers and their pup is of primary importance for breeding success. Females alternate feeding sea-trips with suckling periods on land, and when coming back from the ocean, they have to vocally find their offspring among numerous similar-looking pups. Young fur seals emit a 'mother-attraction call' that presents individual characteristics. In this paper, we review the perceptual process of pup's call recognition by Subantarctic Fur Seal Arctocephalus tropicalis mothers. To identify their progeny, females rely on the frequency modulation pattern and spectral features of this call. As the acoustic characteristics of a pup's call change throughout the lactation period due to the growing...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acoustic communication; Individual recognition; Learning process; Fur Seal; Mammals.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200007
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Acoustic behaviour of male European lobsters ( Homarus gammarus ) during agonistic encounters ArchiMer
Jézéquel, Youenn; Coston-guarini, Jennifer; Chauvaud, Laurent; Bonnel, Julien.
Previous studies have demonstrated that male European lobsters (Homarus gammarus) use chemical and visual signals as a means of intraspecific communication during agonistic encounters. In this study, we show that they also produce buzzing sounds during these encounters. This result was missed in earlier studies because low-frequency buzzing sounds are highly attenuated in tanks, and are thus difficult to detect with hydrophones. To address this issue, we designed a behavioural tank experiment using hydrophones, with accelerometers placed on the lobsters to directly detect their carapace vibrations (i.e. the sources of the buzzing sounds). While we found that both dominant and submissive individuals produced carapace vibrations during every agonistic...
Tipo: Text Palavras-chave: Passive acoustics; Male European lobster; Agonistic encounter; Accelerometer; Buzzing sound; Carapace vibration; Tank; Acoustic communication.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00614/72565/71516.pdf
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Acoustic communication in the Red-vented Bulbul Pycnonotus cafer Anais da ABC (AABC)
Kumar,Anil.
This paper deals with acoustic communication in the Red-vented Bulbul Pycnonotus cafer. This species emits a high variety of vocal signals that can be classified on the basis of their acoustical features and context of production. Individuals sang throughout the year and most songs were discrete and stereotyped. The songs were composed of strophes (phrases) with minor structural variations of elements that were preceded and followed by a temporal gap (3 to 12s). Most strophes were composed of 2 to 6 elements that were often dissimilar in structure and ranging from 0.98 to 4.5 kHz. The biological function of the song appeared to be to maintain pair bonds and to synchronize breeding activities. Different types of context-specific calls were identified....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acoustic communication; Pycnonotus cafer; Bird song; Alarm calls; Roosting calls; Flight calls.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200024
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Acoustic evolution in crickets: need for phylogenetic study and a reappraisal of signal effectiveness Anais da ABC (AABC)
Desutter-Grandcolas,Laure; Robillard,Tony.
Cricket stridulums and calls are highly stereotyped, except those with greatly modified tegmina and/or vena-tion, or ''unusual'' frequency, duration and/or intensity. This acoustic diversity remained unsuspected until recently, and current models of acoustic evolution in crickets erroneously consider this clade homogeneous for acoustic features. The few phylogenetic studies analyzing acoustic evolution in crickets demonstrated that acoustic behavior could be particularly labile in some clades. The ensuing pattern for cricket evolution is consequently extremely complex. We argue that: (1) phylogeny should always be considered when analyzing acoustic evolution, whatever characters are considered (signals, stridulums or behaviors). Consequently, future...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acoustic communication; Evolution; Phylogeny; Calling song effectiveness; Crickets.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200019
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Advertisement and courtship calls of Dendropsophus nanus (Boulenger, 1889) (Anura: Hylidae) from its type locality (Resistencia, Argentina) Biota Neotropica
Teixeira,Bernardo Franco da Veiga; Zaracho,Víctor Hugo; Giaretta,Ariovaldo Antonio.
Abstract Dendropsophus nanus was described from Resistencia, Argentina. The species distribution is widespread in South America east of the Andes. Despite its wide distribution, little information about its advertisement call is available in the literature. Call descriptions from type localities are especially important for the resolution of taxonomic issues, as well as for intraspecific comparisons. Herein we describe the advertisement and the male courtship calls of D. nanus from its type locality. The advertisement call of D. nanus is composed of two types of pulsed notes, herein referred to as “note A” (long note) and “note B” (short note), both with similar dominant frequencies, but different durations. The courtship call is formed by notes that are...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Acoustic communication; Dendropsophus microcephalus group; Behavior.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000400501
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Are communication activities shaped by environmental constraints in reverberating and absorbing forest habitats? Anais da ABC (AABC)
Manthevon,Nicolas; Aubin,Thierry; Dabelsteen,Torben; Vielliar,Jacques M.E..
In the dense vegetation of temperate or tropical forests, communication processes are constrained by propagation-induced modifications of the transmitted sounds. The presence of leaves, trunks and branches induces important sound reverberation and absorption leading to diminution of the signal energy as well as qualitative modifications. The aim of this paper is to briefly review the different strategies used by birds to manage with these constraints. At the emitter's level, an adapted emission behavior which takes into account both the physical heterogeneities of the forest environment and the temporal variations of the acoustic constraints, is especially useful to control the active space of signaling. The coding of information into acoustic parameters...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acoustic communication; Propagation-induced modifications; Environmental constraints; Evolution of communication.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200011
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Causes and consequences of song amplitude adjustment in a territorial bird: a case study in nightingales Anais da ABC (AABC)
Brumm,Henrik.
Vocal amplitude, one of the crucial factors for the exchange of acoustic signals, has been neglected in studies of animal communication, but recent studies on song variation in Common Nightingales Luscinia megarhynchos have revealed new insights into its importance in the singing behavior of territorial birds. In nightingales song amplitude is not maximized per se, but is individually regulated according to the level of masking background noise. Also, birds adjust their vocal intensity according to social variables, as in male-male interactions. Moreover, during such interactions, males exploited the directionality of their songs to broadcast them in the direction of the intended receivers ensuring the most effective signal transmission. Studies of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acoustic communication; Birdsong; Lombard effect; Background noise; Song development; Vocal amplitude.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200017
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Cougar (Puma concolor) vocalization and frequency shift as a playback response Biota Neotropica
Macarrão,Arthur; Corbo,Milena; Araújo,Carlos Barros de.
Recordings of cougar (Puma concolor) vocalizations are rare in the wild. We made two night recordings from the same individual. The first recording was spontaneous whereas the second was made after a playback emission (using a third party recording) allowing for comparisons. We measured the calls before and after playback stimuli using Raven software and noted that only the minimum fundamental frequency presented differences between calls. As fundamental frequency is closely related to body size, a frequency reduction may indicate territoriality engagement. Our recording seems to be the first held in the Brazilian wild. Little is known about cougar natural history and behavior, and our data suggest that acoustic communication may have an important role on...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioacoustics; Felid; Recordings; Brazil; Acoustic communication.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000300015
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Evolution of acoustic communication in crickets: phylogeny of Eneopterinae reveals an adaptive radiation involving high-frequency calling (Orthoptera, Grylloidea, Eneopteridae) Anais da ABC (AABC)
Robillard,Tony; Desutter-Grandcolas,Laure.
Evolution of dominant frequencies in songs of Eneopterinae crickets was studied with respect to phylogeny. Two characters are optimized on the tree: the first describes the frequency resulting from the vibration of the harp (Fda), and the second is due to the vibration of other tegminal areas (Fdb). Fda was found to be relatively stable through the subfamily. Its low ancestral state is replaced by a high Fda only once, resulting in high-frequency calling in [Cardiodactylus (Lebinthus-Agnotecous)]. A high Fdb component is added to the low ancestral Fda in Eneoptera guyanensis, resulting in frequency modulation. The onset of high Fd in this first subclade is accompanied by a high cladogenesis rate, which supports a hypothesis of adaptive radiation for high...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acoustic communication; Adaptation; Cladogenesis; Ensifera; Evolutionary pattern; Phylogeny.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200018
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Isolation induced changes in Guinea Pig Cavia porcellus pup distress whistles Anais da ABC (AABC)
Monticelli,Patrícia F.; Tokumaru,Rosana S.; Ades,César.
Guinea Pig Cavia porcellus pups emit high-pitched distress whistles when separated from their mother. In order to assess the influence of the duration of a brief isolation period on whistle acoustic structure, werecorded the distress whistles of six 8-day old pups separated for 15 min from their group in a novel environment and compared the mean values of the first and last 30 whistle notes. Acoustic analysis revealed, throughout the session, a significant decrease in whistle duration, an increase in mean frequency and a tendency for a decrease in number of harmonics in the first part of the note. Results demonstrate that, throughout a brief isolation period, the vocal response of Guinea Pig pups to isolation undergoes structural changes possibly related...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acoustic communication; Isolation calls; Guinea Pig.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200027
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Zur intraspezifischen Lautkommunikation des Russischen Desmans Desmana moschata (Linnaeus, 1758) (Insectivora: Talpidae: Desmaninae) nebst einigen Angaben zu seinem Sozialverhalten Naturalis
Romanow, Peter; Poduschka, Walter; Deutsch, Werner.
The Russian Desman Desmana moschata (Linnaeus, 1758) is a highly endangered semiaquatic mammal, confined to disjunct areas. Between 1983 and 1992 several specimens were kept and investigated, firstly in the zoological garden of Moscow (4 ♀ ♀, 1 ♂), and afterwards in the field station of the former Soviet-Russian Academy of Sciences at Cernogolovka (1 ♀, 4 ♂ ♂). Parallel to this, numerous extended field trips to the huge wetlands of the Oka Reserve allowed the verification of the results obtained in captivity. An unexpectedly rich repertoire of acoustic signals was recorded and transferred to sonagrams in Vienna/Austria. After tentative interpretation, the acoustic signals were correlated with simultaneous behaviour patterns. Not only the essential...
Tipo: Article / Letter to the editor Palavras-chave: Russian Desman; Desmana moschata; Acoustic communication; Sonagrams; Oka Reserve; Female dominance; Restricted social tolerance.
Ano: 1996 URL: http://www.repository.naturalis.nl/record/504222
Registros recuperados: 11
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