Search for dissertations about: "tursiops"

Found 4 swedish dissertations containing the word tursiops.

  2. 1. Ecology and genetic population structure of Indo-Pacific bottlenose dolphins in East Africa

    Author : Anna Särnblad Hansson; Per Berggren; Anders Angerbjörn; Göran Spong; Stockholms universitet; []
    Keywords : Tursiops aduncus; population size; distribution; social structure; behaviour; conservation status; mitochondrial DNA; microsatellites; Zanzibar; western Indian Ocean; NATURAL SCIENCES; NATURVETENSKAP; zoologisk ekologi; Animal Ecology;

    Abstract : Many marine mammal populations are threatened by anthropogenic activities. The Indo-Pacific bottlenose dolphins (Tursiops aduncus) off Zanzibar are subject to high levels of bycatch, negative impact from tourism and were previously hunted. READ MORE

  4. 2. Biology, ecology and anthropogenic threats of Indo-Pacific bottlenose dolphins in east Africa

    Author : Omar A. Amir; Per Berggren; Graham Pierce; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Growth; reproduction; feeding ecology; bycatch; organohalogen compounds; dolphins; Tursiops aduncus; Zanzibar; East Africa; Marine ecology; Marin ekologi; zoologisk ekologi; Animal Ecology;

    Abstract : This thesis examines the biology, ecology and anthropogenic threats of Indo-Pacific bottlenose dolphins (Tursiops aduncus) off Zanzibar, Tanzania, based on research conducted and samples collected between 2000 and 2008. Distribution and occurrence are described based on incidental catches (bycatch) in gillnet fisheries. READ MORE

  5. 3. Directional aggressive pulse sounds in the bottlenose dolphin (Tursiops Truncatus) : technical aspects and social implications

    Author : Christer Blomqvist; Kathleen Dudzinski; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : The ability of dolphins to produce pulse sounds with a bandwidth of up to 150 kHz, has been intensively studied with focus on their sonar capabilities, i.e. the detection, ranging and discrimination of objects of various shapes, textures and material. READ MORE

  6. 4. Behavioural ecology of Indo-Pacific bottlenose and humpback dolphins

    Author : Eva Stensland; Per Berggren; Anders Angerbjörn; Elisabeth Slooten; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Behaviour; ecology; dolphins; Zanzibar; abundance; distribution; tourism; mixed-species groups; interspecific association; social interaction; swim-with-dolphin; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Abstract : Dolphins in East Africa face various threats, such as direct hunt, bycatch and habitat degradation. It is therefore important to undertake research that can facilitate necessary conservation and management actions to minimize these threats. READ MORE