[MARMAM] New paper on site fidelity and space use of southern Australian bottlenose dolphins

Ceci Passadore cecipass8 at gmail.com
Tue Nov 28 05:26:27 PST 2017


Dear colleagues,



We are pleased to announce the release of the following publication in *Ecology
and Evolution*:



Passadore, C., Möller, L., Diaz-Aguirre, F., & Parra, G. J. (2017). High
site fidelity and restricted ranging patterns in southern Australian
bottlenose dolphins. Ecology and Evolution, 00, 1-15. doi: 10.1002/ece3.3674



*Abstract:* Information on site fidelity and ranging patterns of wild
animals are critical to understand how they use their environment and guide
conservation and management strategies. Delphinids show a wide variety of
site fidelity and ranging patterns. Between September 2013 and October
2015, we used boat-based surveys, photographic-identification, biopsy
sampling, clustering analysis and geographic information systems to
determine the site fidelity patterns and representative ranges of southern
Australian bottlenose dolphins (*Tursiops *cf. *australis*) inhabiting the
inner area of Coffin Bay, a highly productive inverse estuary located
within Thorny Passage Marine Park, South Australia. Agglomerative
hierarchical clustering of individuals’ site fidelity index and sighting
rates indicated that the majority of dolphins within the inner area of
Coffin Bay are ‘regular residents’ (n = 125), followed by ‘occasional
residents’ (n = 28), and ‘occasional visitors’ (n = 26). The low standard
distance deviation indicated that resident dolphins remained close to their
main centre of use (range = 0.7 – 4.7 km, X ± SD = 2.3 ± 0.9 km).
Representative ranges of resident dolphins were small (range = 3.9 – 33.5 km
2, X ± SD = 15.2 ± 6.8 km2), with no significant differences between males
and females (Kruskal-Wallis, chi2 = 0.426, *p* = 0.808). The representative
range of 56% of the resident dolphins was restricted to a particular bay
within the study area. The strong site fidelity and restricted ranging
patterns among individuals could be linked to the high population density
of this species in the inner area of Coffin Bay, coupled with differences
in social structure and feeding habits. Our results emphasize the
importance of productive habitats as a major factor driving site fidelity
and restricted movement patterns in highly mobile marine mammals, and the
high conservation value of the inner area of Coffin Bay for southern
Australian bottlenose dolphins.



Open access: http://onlinelibrary.wiley.com/doi/10.1002/ece3.3674/full


PDF copies are also available upon request to:
cecilia.passadore at flinders.edu.au


Follow the project at Researchgate for related publications:
https://www.researchgate.net/project/Demography-spatial-ecology-and-socio-genetic-structure-of-southern-Australian-bottlenose-dolphins-in-a-marine-park


On behalf of all authors,



Cecilia Passadore

-- 
Cecilia Passadore

PhD. candidate
*Cetacean Ecology, Behaviour and Evolution Lab (CEBEL)*
*School of Biological Sciences*
*Flinders University*
*Sturt Road, Bedford Park, South Australia, 5042*
*GPO Box 2100, Adelaide, South Australia, 5001*
*Lab website: **www.cebel.org.au <http://www.cebel.org.au/>*
*Phone: +61 8 8201-3865*
*Email:*  *cecilia.passadore at flinders.edu.au
<cecilia.passadore at flinders.edu.au>*
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