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Distribution, habitat and biology of a rare and threatened eastern Australian endemic shark: Colclough's shark, Brachaelurus colcloughi Ogilby, 1908

Kyne, Peter M., Compagno, Leonard J. V., Stead, Joanna, Jackson, Micha and Bennett, Michael B. (2011). Distribution, habitat and biology of a rare and threatened eastern Australian endemic shark: Colclough's shark, Brachaelurus colcloughi Ogilby, 1908. Marine & Freshwater Research,62(6):540-547.

Document type: Journal Article

IRMA ID 82057923xPUB15
Title Distribution, habitat and biology of a rare and threatened eastern Australian endemic shark: Colclough's shark, Brachaelurus colcloughi Ogilby, 1908
Author Kyne, Peter M.
Compagno, Leonard J. V.
Stead, Joanna
Jackson, Micha
Bennett, Michael B.
Journal Name Marine & Freshwater Research
Publication Date 2011
Volume Number 62
Issue Number 6
ISSN 1323-1650   (check CDU catalogue open catalogue search in new window)
Start Page 540
End Page 547
Total Pages 8
Place of Publication Australia
Publisher C S I R O Publishing
HERDC Category C1 - Journal Article (DIISR)
Abstract Despite increasing research effort and conservation focus on sharks, small species of little commercial value are often overlooked, although they make a considerable contribution to global diversity. The poorly known Colclough’s shark, Brachaelurus colcloughi, is naturally rare to uncommon and is encountered only irregularly. Collating all known records (n = 50), we review the species’ geographic and bathymetric distribution, habitat, reproductive biology and diet. All but four B. colcloughi records are from within a core distribution of <2° latitude on the Australian east coast. Bathymetric distribution is from less than 4 to 217 m depth, with all but three records from less than 100 m depth. The species shelters on rocky reefs during the day and is thought to forage nocturnally around reefs and adjacent substrates. B. colcloughi is viviparous, with litter sizes of 6–7. Mature males and females have been observed from 61.0- and 54.5-cm total length, respectively. Gravid females have been collected in austral winter months. Dietary analysis indicates a predominantly piscivorous diet. Our results are placed in the context of existing threats and future research and management directions, demonstrating that shark species with low abundances and restricted ranges, such as B. colcloughi, require a suite of management arrangements to ensure long-term population viability.
Keywords bycatch
diet
Heteroscyllium
IUCN Red List
reproductive biology
DOI http://dx.doi.org/10.1071/MF10160   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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Created: Fri, 17 Jan 2014, 00:47:40 CST