[MARMAM] New paper on the atypical residency of short-beaked common dolphins

DRI Research Officer research at dolphinresearch.org.au
Thu Oct 13 15:25:19 PDT 2016

Dear colleagues,

My co-authors and I are pleased to announce the publication of our paper:

Mason S, Salgado Kent C, Donnelly D, Weir J, Bilgmann K. (2016) *Atypical
residency of short-beaked common dolphins (Delphinus delphis) to a shallow,
urbanized embayment in south-eastern Australia. *Royal Society Open Science
* 3* DOI: 10.1098/rsos.160478.


Short-beaked common dolphins (*Delphinus delphis*) are typically considered
highly mobile, offshore delphinids. This study assessed the residency of a
small community of short-beaked common dolphins in the shallow, urbanized
Port Phillip Bay, south-eastern Australia. The ability to identify common
dolphins by their dorsal fin markings and coloration using
photo-identification was also investigated. Systematic and non-systematic
boat surveys were undertaken between 2007 and 2014. Results showed that 13
adult common dolphins and their offspring inhabit Port Phillip Bay, of
which 10 adults exhibit residency to the bay. The majority of these adults
are reproductively active females, suggesting that female philopatry may
occur in the community. Systematic surveys conducted between 2012 and 2014
revealed that the dolphins were found in a median water depth of 16 m and
median distance of 2.2 km from the coast. The shallow, urbanized habitat of
this resident common dolphin community is atypical for this species. As a
result, these common dolphins face threats usually associated with inshore
bottlenose dolphin communities. We suggest that the Port Phillip Bay common
dolphin community is considered and managed separate to those outside the
embayment and offshore to ensure the community's long-term viability and
residency in the bay.

The paper is Open Access and available for download at

Kind regards,

Sue Mason
*Research Director / PhD student (Curtin University)*
*Dolphin Research Institute*
*PO Box 77 Hastings Vic 3915*
*www.dolphinresearch.org.au <http://www.dolphinresearch.org.au/>
www.facebook.com/driface <http://www.facebook.com/driface>*
*Office: 1300 130 949  *
*Mobile: +61 438 399 676*
*Email: research at dolphinresearch.org.au <research at dolphinresearch.org.au>*
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