Sound production and associated behaviours in the New Zealand spiny rock lobster, Jasus edwardsii

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dc.contributor.advisor Radford, Craig
dc.contributor.author Smith, Jessica Anne
dc.date.accessioned 2021-06-11T00:47:19Z
dc.date.available 2021-06-11T00:47:19Z
dc.date.issued 2021 en
dc.identifier.uri https://hdl.handle.net/2292/55290
dc.description Full Text is available to authenticated members of The University of Auckland only. en
dc.description.abstract There is extensive knowledge of sound production and their associated behaviours among semi-terrestrial and terrestrial crustaceans. However, there is a lack of research into sound production in aquatic crustaceans. Previously, it was believed that the New Zealand spiny rock lobster (Jasus edwardsii) was a silent species, yet recent anecdotal evidence suggests that this species is in fact capable of producing sound. The aim of this study was to identify sounds produced and determine behaviours associated with sound production of J. edwardsii. Using tank-based experiments equipped with acoustic and video recorders, sound production and behaviour was monitored under different trial conditions (individual, group, feeding, and rasp playback). Jasus edwardsii produced a mutli-pulsed broadband sound signal called the rasp. Rasps were produced both individually and in group settings and were not influenced by size of individuals. In feeding trials, rasp characteristics differed from non-feeding scenario rasps (i.e. normal rasp) and rasp production rate increased. During feeding trials, J. edwardsii displayed guarding behaviours, where larger individuals would not allow smaller individuals near the food source. When “feeding rasps” were played back through an underwater speaker, individuals exhibited searching behaviour and travelled further distances in the tank. In conclusion, this study shows that J. edwardsii is capable of producing sound and identifies behaviours associated with sound production. The rasp may act as an intraspecific communication signal in J. edwardsii, especially in the feeding behaviour of this species.
dc.publisher ResearchSpace@Auckland en
dc.relation.ispartof Masters Thesis - University of Auckland en
dc.relation.isreferencedby UoA en
dc.rights Restricted Item. Full Text is available to authenticated members of The University of Auckland only. en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/nz/
dc.title Sound production and associated behaviours in the New Zealand spiny rock lobster, Jasus edwardsii
dc.type Thesis en
thesis.degree.discipline Marine Science
thesis.degree.grantor The University of Auckland en
thesis.degree.level Masters en
dc.date.updated 2021-06-09T02:39:09Z
dc.rights.holder Copyright: the author en


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