Comparison of the reproductive ecology of two sympatric blacktip sharks (Carcharhinus limbatus and Carcharhinus tilstoni) off north-eastern Australia with species identification inferred from vertebral counts

Harry, A. V., Morgan, J. A. T., Ovenden, J. R., Tobin, A. J., Welch, D. J. and Simpfendorfer, C. A. (2012) Comparison of the reproductive ecology of two sympatric blacktip sharks (Carcharhinus limbatus and Carcharhinus tilstoni) off north-eastern Australia with species identification inferred from vertebral counts. Journal of Fish Biology, 81 4: 1225-1233.


Author Harry, A. V.
Morgan, J. A. T.
Ovenden, J. R.
Tobin, A. J.
Welch, D. J.
Simpfendorfer, C. A.
Title Comparison of the reproductive ecology of two sympatric blacktip sharks (Carcharhinus limbatus and Carcharhinus tilstoni) off north-eastern Australia with species identification inferred from vertebral counts
Formatted title Comparison of the reproductive ecology of two sympatric blacktip sharks (Carcharhinus limbatus and Carcharhinus tilstoni) off north-eastern Australia with species identification inferred from vertebral counts
Journal name Journal of Fish Biology   Check publisher's open access policy
ISSN 0022-1112
1095-8649
Publication date 2012-09
Sub-type Article (original research)
DOI 10.1111/j.1095-8649.2012.03400.x
Volume 81
Issue 4
Start page 1225
End page 1233
Total pages 9
Place of publication Oxford, United Kingdom
Publisher Wiley-Blackwell
Collection year 2013
Language eng
Formatted abstract Precaudal vertebral counts were used to distinguish between 237 morphologically similar Carcharhinus limbatus and Carcharhinus tilstoni and were congruent with differences in reproductive ecology between the species. In addition to differing lengths at maturity and adult body size, the two species had asynchronous parturition, were born at different sizes and the relative frequencies of neonates differed in two coastal nursery areas. Despite evidence that hybridization can occur, these differences suggest the species are largely reproductively isolated.
Keyword Cryptic species
Elasmobranch
Hybridization
Reproductive Isolation
Taxonomy
New-South-Wales
C.-Limbatus
Fishery
Biology
Caught
Hybridization
Speciation
Catch
Area
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Alliance for Agriculture and Food Innovation
Official 2013 Collection
 
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