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  • A new recording on hourglass dolphin (Lagenorhynchus cruciger) echolocation clicks [Elektronski vir]
    Gruden, Pina, 1985- ; Pangerc Žnidaršič, Tanja
    Previous acoustic studies of hourglass dolphins (Lagenorhynchus cruciger) suggest this species produces narrowband, high frequency echolocation clicks similar to the echolocation clicks of the genus ... Cephalorhynchus. Furthermore, molecular analyses indicate L. cruciger may in fact belong to the Cephalorhynchus genus. This study, however, reports echolocation click characteristics of L. cruciger similar to the sounds produced by other species within the Lagenorhynchus genus. The data were collected in South Atlantic offshore waters, north-east of the Falkland Islands where hourglass dolphins have previously been sighted. Series of acoustic pulses were recorded simultaneously with visual sightings of wild hourglass dolphins on multiple occasions during a passive acoustic monitoring survey off a seismic vessel. The recorded sounds were processed digitally and the pulses manually characterised in terms of length, bandwidth and inter-click interval. The clicks were found to be shorter, with broader bandwidth and with shorter inter-click intervals than previously reported. Whilst this may be due to differences in collection and analyses of data, it may also be indicative of individual or population differences.
    Vir: Information and ideas worth sharing [Elektronski vir] (Str. 151)
    Vrsta gradiva - prispevek na konferenci ; neleposlovje za odrasle
    Leto - 2012
    Jezik - angleški
    COBISS.SI-ID - 271820288

    Povezava(-e):

    http://www.iwdg.ie/ecs/downloads/ecs_2012_galway_abstract_book.pdf

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