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The low-frequency vocal repertoire of adult African dwarf crocodiles
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Agata Staniewicz --- University of Bristol, United Kingdom Gráinne McCabe --- United Kingdom, Marc Holderied --- University of Bristol, United KingdomAcoustic techniques are rapidly becoming powerful tools for species monitoring and biodiversity assessment. These methods can be particularly appropriate for forest-dwelling crocodiles which are difficult to survey visually. However, basic vocal-repertoire data is lacking for many of the poorly known... -
Vocal mimicry by sunbirds and the first record of mimicry by Dusky Sunbird Cinnyris fuscus
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Michael SL Mills --- AP Leventis Ornithological Research Institute, NigeriaVocal mimicry is rarely observed among members of the Nectariniidae (sunbirds), with the only African species known to do so regularly being Socotra Sunbird Chalcomitra balfouri. Here I document and describe for the first time vocal mimicry by Dusky Sunbird... -
Acoustic behaviour of southern right whales in relation to numbers of whales present in Walker Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LH Hofmeyr-Juritz --- , South Africa PB BestEstimating numbers of whales present in an area from recorded call rates could be a useful conservation tool. We recorded southern right whale Eubalaena australis vocalisations and presence in Walker Bay on the south coast of South Africa. In all,... -
Laryngotracheal and cervical muscular anatomy in the genus Uroplatus (Gekkota: Gekkonidae) in relation to distress call emission
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Anthony P. Russell --- , , Canada Heather A. Hood --- , , Canada Aaron M. Bauer --- , , USAThe gekkonid Uroplatus exhibits many autapomorphic features. The laryngotracheal region has long been noted to display unusual characteristics, with a widely expanded and membrane-roofed anterior portion of the trachea being prominent among these. It has been proposed that this tracheal... -
First look at humpback whale (Megaptera novaeangliae) song structure from western South Africa
Item type: Journal Article • Journal: African Zoology • Authors: James Seymour Hawkey --- , South Africa Simon Harvey Elwen --- , South Africa Bridget Susan James --- , South Africa Alexa Simone Prinsloo --- , South Africa Tess Gridley --- , South AfricaHumpback whales are known for their complex and well-structured song that is typically produced on low-latitude breeding grounds. However, there is increasing evidence of song production on migration routes and high-latitude feeding grounds. Within a breeding ground and season, males... -
Observations on the breeding behaviour of the Taita dwarf toad Mertensophryne taitana on Mt. Mbololo, Taita Hills, Kenya
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Jacob Mueti Ngwava --- National Museums of Kenya, PatrickK. Malonza --- South African National Biodiversity Institute, South Africa G. JohnMeasey --- National Museums of Kenya,Very little life‐history information is available regarding the 13 species of earless dwarf toads from the genus Mertensophryne. We report our observations on the breeding behaviour of M. taitana from Mount Mbololo in the Taita Hills, Kenya. Empirical data from... -
Difference in acoustic responses to urbanisation in two African passerines
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Dickson Anobie Matthew --- AP Leventis Ornithological Research Institute (APLORI), Nigeria Samuel Tertse Ivande --- AP Leventis Ornithological Research Institute (APLORI), Nigeria Ulf Ottosson --- AP Leventis Ornithological Research Institute (APLORI), Nigeria Samuel Temidayo Osinubi --- University of Cape Town, South AfricaModification of ecosystems as a consequence of urbanisation alters natural habitat structures and soundscapes, creating constraints for vocal communication in animals. Birds are able to adjust their vocalisation to the prevailing acoustic features of their habitat. As such, their sounds...