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| Registros recuperados: 24 | |
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| Willemse, F.; Helversen, O. von; Odé, B.. |
| This paper presents a summary of the current knowledge on the systematics of the Greek taxa of Chorthippus, morphologically characterised by angled lateral pronotal keels (usually grouped as Glyptobothrus). Prior to this paper, based on traditional morphology, ten taxa of Chorthippus with angled lateral pronotal keels were recognized from Greece. Based on morphology as well as (and more importantly so) bioacoustics thirteen Greek taxa are now recognised. With addition of a few additional related taxa that occur only outside Greece, all are treated in this paper: Chorthippus apricarius apricarius (Linnaeus, 1758), C. vagans vagans (Eversmann, 1848) (not in Greece), C. v. cypriotus (Uvarov, 1936) stat. nov. [Cyprus], C. v. africanus Nadig, 1981 [N. Africa],... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Chorthippus; Glyptobothrus; Greece; Acrididae; Orthoptera; Morphology; Bioacoustics; Taxonomy; Variability; Transitional or hybrid populations; Phylogeny; Evolution; Palaeobiogeography; Key; Distribution; Ecology; 42.75. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/314191 |
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| Forti,Lucas Rodriguez; Márquez,Rafael; Bertoluci,Jaime. |
| In anurans, acoustic communication is a major mechanism of pre-zygotic isolation, since it carries information about species recognition. Detailed descriptions of the acoustic properties of anuran advertisement calls provide important data to taxonomist and to the understanding of the evolution of the group. Herein we re-describe the advertisement call of the hylid frog Dendropsophus microps (Peters, 1872) after analyzing a larger sample than that of previous descriptions. We also compare the acoustic properties of the call in two populations and discuss the effect of the presence of the sister species, Dendropsophus giesleri (Mertens, 1950), a potential competitor, in one of the populations. Additionally, we provide information on calling sites and size... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acoustic traits; Amphibia; Bioacoustics; Call evolution; Competition. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000300187 |
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| Wilson, M; Acolas, M; Begout, Marie-laure; Madsen, P; Wahlberg, M. |
| Most fish cannot hear frequencies above 3 kHz, but a few species belonging to the subfamily Alosinae (family Clupeidae) can detect intense ultrasound. The response of adult specimens of the European allis shad (Alosa alosa) to sinusoidal ultrasonic pulses at 70 and 120 kHz is tested. The fish showed an intensity-graded response to the ultrasonic pulses with a response threshold between 161 and 167 dB re 1 mu Pa (pp) for both frequencies. These response thresholds are similar to thresholds derived from juvenile American shad (Alosa sapidissima) in previous studies, supporting the suggestion that these members of Alosinae have evolved a dedicated ultrasound detector adapted to detect and respond to approaching echolocating toothed whales. (C) 2008 Acoustical... |
| Tipo: Text |
Palavras-chave: Zoology; Ultrasonics; Biocommunications; Bioacoustics. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-6118.pdf |
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| Gogala,Matija; Trilar,Tomi. |
| Recent bioacoustic investigations have shown that Cicadetta montana Scopoli 1772 is a complex of morphologically similar sister species that are best characterized by their song patterns. At the type locality of C. montana, only mountain cicadas with simple, long lasting song phrases were heard, recorded and collected. Therefore, we have good reasons to suggest that this type of song is characteristic for C. montana s. str. Boulard described a song of C. montana from France with phrases composed of a long and a short echeme; this type of song is characteristic for cicadas morphologically corresponding to C. montana var. brevipennis Fieber 1876; we suggest to raise this taxon to species level. On the basis of specific song, Puissant and Boulard described C.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cicadetta montana; Cicadetta spp.; Cicadas; Bioacoustics; Systematics. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200020 |
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| Eschmann, C.; Moore, R.; Nekaris, K.A.I.. |
| The study of calling patterns is a useful non-invasive method for determining population densities and the taxonomic relationships of rare or cryptic animal species. The Western purple-faced langur Trachypithecus vetulus nestor, endemic to Sri Lanka’s lowland rainforests, is severely impacted by forest fragmentation, with most remaining populations living almost completely in home gardens. Due to their shy nature, little is known about the behaviour of this subspecies; analysing the regular loud calls emitted by these langurs could allow for improvement of census techniques, clarification of their taxonomy, and an understanding of the impact of forest destruction on their behaviour. In 2007, we recorded the calling patterns of five male T. v. nestor at... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Bioacoustics; Taxonomy; Colobinae; South Asia; Fragmentation; 42.84. |
| Ano: 2008 |
URL: http://www.repository.naturalis.nl/record/280454 |
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| Zefa,Edison. |
| Three isolated populations of the cricket Endecous itatibensis Rehn, 1918 had been analyzed to test the hypothesis of divergence in the calling song estridulation and to discuss its implications in the speciation process. The song registers were obtained from specimens in Corumbataí, Piraciacaba and Itatiba cities, state of São Paulo, Brazil. In the three analyzed populations, calling songs are composed by pairs of notes. Specimens from Corumbataí emit composed phrases with 3 to 18 pairs of notes, while those of Piracicaba and Itatiba have 1 to 3 pairs of notes. Inter- and intrapopulational variability in the frequencies of acoustic signals were detected. While recording the calling songs, other stridulations were registered, possibly from species of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cricket; Bioacoustics; Acoustic competition; Stridulation; Speciation. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000100002 |
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| Sabatini,Vera; Ruiz-Miranda,Carlos R.. |
| The effectiveness of auditory signals for long distance communication depends on environmental, biological and behavioral factors. Because the environment is not homogenous, it is expected that vocalizing animals would emit signals from locations (perches) that would facilitate call propagation and perception. Perching behavior has been widely documented in birds, but not in primates. The aim of this study was to ascertain whether golden lion tamarins - Leontopithecus rosalia (Linnaeus, 1766) - emit long calls from places (perch) within the forest strata that are higher above the ground with respect to places used for baseline behaviors. We compared the forest stratum (upper, middle and lower strata) and habitat type (hill, swamp and lowland forests) used... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioacoustics; Communication; Perching. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000200004 |
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| Parris, Kirsten M.; School of Botany, University of Melbourne, Australia; Australian Research Centre for Urban Ecology, Royal Botanic Gardens Melbourne, Australia; k.parris@unimelb.edu.au; Schneider, Angela; Department of Zoology, University of Melbourne, Australia; angelas@unimelb.edu.au. |
| Roadside habitats are important for a range of taxa including plants, insects, mammals, and birds, particularly in developed countries in which large expanses of native vegetation have been cleared for agriculture or urban development. Although roadside vegetation may provide suitable habitat for many species, resident animals can be exposed to high levels of traffic noise, visual disturbance from passing vehicles, and the risk of collision with cars and trucks. Traffic noise can reduce the distance over which acoustic signals such as song can be detected, an effect known as acoustic interference or masking. Studies from the northern hemisphere show that the singing behavior of birds changes in the presence of traffic noise. We investigated the impact of... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Acoustic interference; Ambient noise; Bioacoustics; Conservation biology; Road ecology; Signal design; Traffic noise; Vocal communication.. |
| Ano: 2009 |
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| Leroy, Emmanuelle C; Royer, Jean-yves; Bonnel, Julien; Samaran, Flore. |
| In the past decades, in the context of a changing ocean submitted to an increasing human activity, a progressive decrease in the frequencies (pitch) of blue whale vocalizations has been observed worldwide. Its causes, of natural or anthropogenic nature, are still unclear. Based on 7years of continuous acoustic recordings at widespread sites in the southern Indian Ocean, we show that this observation stands for five populations of large whales. The frequency of selected units of vocalizations of fin, Antarctic, and pygmy blue whales has steadily decreased at a rate of a few tenths of hertz per year since 2002. In addition to this interannual frequency decrease, blue whale vocalizations display seasonal frequency shifts. We show that these intra-annual... |
| Tipo: Text |
Palavras-chave: Large baleen whales; Blue whale calls; Frequency shifts; Frequency decrease; Ambient noise; Bioacoustics. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00516/62730/67109.pdf |
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| HEPP,FÁBIO; POMBAL JR,JOSÉ P. |
| Abstract: There is a significant interest for using call features in taxonomic and systematic studies. However, the indiscriminate use of alternative terms for the acoustic structures has precluded reliable comparisons among species without directly checking recordings of all compared species. Recent attempts of nomenclature standardization have focused on term and structure definitions instead of homology. Here, we argue that application of nomenclatural propositions based on universal similarities is pragmatically difficult (likely impossible) and, most importantly, inaccurate regarding to assessment of homology. If homology is not properly assessed, nomenclature can lead to artificial groupings, which can hamper our understanding of the natural world.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Behavior; Bioacoustics; Comparative biology; Systematics; Terminology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700612 |
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| FROIDEVAUX,Jérémy S.P.; ROEMER,Charlotte; LEMARCHAND,Clément; MARTÍ-CARRERAS,Joan; MAES,Piet; RUFRAY,Vincent; URIOT,Quentin; URIOT,Sylvain; LÓPEZ-BAUCELLS,Adrià. |
| ABSTRACT The Amazonian basin harbours some of the most bat-diverse ecosystems worldwide. Yet, information on elusive, high-flying bat species such as Molossidae is scarce or virtually missing in the literature, which hampers conservation efforts both locally and globally. The recent advent of new technologies specifically designed to survey bats, such as passive ultrasound detectors and acoustic lures, has significantly increased understanding of bat ecology and distribution, and has allowed researchers to gather new and valuable information which was impossible to collect in the past. We undertook a rapid bat diversity assessment in French Guiana using acoustic lures to aid in capturing high-flying insectivorous bat species. Here we report the second and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Bats; Bioacoustics; Molossidae; Mitochondrial sequences. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000400327 |
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| Anjos,Luiz dos. |
| Bird communities were studied in two types of fragmented habitat of Atlantic forest in the State of Paraná, southern Brazil; one consisted of forest fragments that were created as a result of human activities (forest remnants), the other consisted of a set of naturally occurring forest fragments (forest patches). Using quantitative data obtained by the point counts method in 3 forest patches and 3 forest remnants during one year, species richness and relative abundance were compared in those habitats, considering species groups according to their general feeding habits. Insectivores, omnivores, and frugivores presented similar general tendencies in both habitats (decrease of species number with decreasing size and increasing isolation of forest fragment).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Bioacoustics; Brazilian Atlantic forest; Conservation; Forest fragmentation. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200036 |
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| Registros recuperados: 24 | |
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