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Biosonar dynamics of echolocating toothed whales – an investigation into active sensing with sound

PhD defence, Friday 18 June 2021. Chloe Malinka.

2021.06.18 | Sunitha Satkunam

Chloe Elizabeth Malinka

During her PhD studies, Chloe Malinka researched the echolocation behaviour and biosonar dynamics of echolocating toothed whales, with a focus on harbour porpoises and dwarf sperm whales. These marine mammals produce brief high-pitched sounds that reflect off of objects in their surrounding environment, with the returning echoes guiding their subsequent vocal and motor behaviours. By studying their biosonar systems, insight can be gained into the constraints and flexibilities of their sensory perception. Chloe Malinka has developed deep-sea hydrophone arrays for use in the wild, and used passive acoustic arrays and acoustic biologging devices in controlled settings to better understand the processes that guide target detection and interception, with explorations into situations with distractors and noise. The research findings contribute both to our understanding of their sensory ecology and to our interpretation of passive acoustic monitoring data.

The PhD study was completed at the Department of Biology, Faculty of Natural Sciences, Aarhus University.

This summary was prepared by the PhD student.

Time: Friday 18 June 2021 at 16:00
Place: The PhD defence will be held online. To receive a link to the event, please send an e-mail to Chloe Elizabeth Malinka, chloe.e.malinka@bio.au.dk
Title of PhD thesis: Biosonar of narrow-band high-frequency toothed whales: Sampling a dynamic, multi-target world
Contact information: Chloe Malinka, e-mail: chloe.e.malinka@bio.au.dk
Members of the assessment committee:
Senior Scientist Dr. Kelly Benoit-Bird, Monterey Bay Aquarium Research Institute, USA
Senior Researcher Dr. Brian K. Branstetter, National Marine Mammal Foundation, USA
Associate Professor Mark Bayley (chairman), Department of Biology, Aarhus University, Denmark
Main supervisor:
Professor Peter Teglberg Madsen, Department of Biology, Aarhus University, Denmark
Language: The PhD dissertation will be defended in English

The defence is public.

Due to the coronavirus situation, the PhD thesis will not be available for reading at the offices of the PhD administration. Instead, interested parties may send an e-mail to gradschool.nat@au.dk to receive a digital copy of the PhD thesis. Please note, it may in certain cases be necessary to make an individual arrangement to read the PhD thesis.

PhD defence
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