Zobrazeno 1 - 10
of 15
pro vyhledávání: '"J. Matías Braccini"'
Publikováno v:
Regional Studies in Marine Science. 16:290-293
Reliable information on length–length relationships is required for standardising and comparing size measures and for improving the use of available data and biological information collected as a function of different size measures. Here, we used b
Autor:
J. Matías Braccini, David A. Ebert, V. S. Troynikov, Henry F. Mollet, Adam Barnett, Terence I. Walker, Nicholas Kirby
Publikováno v:
Aquatic Biology. 9:131-138
Growth estimates for shark species are mostly derived from length-at-age data, where age information is commonly obtained from hard structures such as vertebrae and dorsal-fin spines. Unfor- tunately, hard structures cannot be used for estimating the
Autor:
J. Matías Braccini
Publikováno v:
Marine Ecology Progress Series. 371:273-284
Quantifying the feeding ecology of marine predators is essential for understanding their trophic interactions and their potential regulatory effects in marine ecosystems. I quantified the feed- ing ecology of 2 related predators that overlap only in
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 65:74-82
A prospective model of dorsal-fin spine growth in chondrichthyans is devised by studying the growth of spines from captive and wild Heterodontus portusjacksoni injected with several fluorochromes. Evidence was found for only two dentine layers in the
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 63:2456-2466
A three-levelled hierarchical risk assessment approach was trialed using piked spurdog (Squalus megalops )t o evaluate the suitability of the approach for chondrichthyan species. At level 1, a qualitative assessment indicated that the only fishing-re
Publikováno v:
Fisheries Research. 78:385-389
Common commercial fishing practices of eviscerating, beheading and finning sharks create the need for using conversion factors from partial lengths to total length and from partial masses to total mass. In the present paper, these conversion factors
Publikováno v:
ICES Journal of Marine Science. 62:1076-1094
Sources of variation in dietary composition were examined in the piked spurdog (Squalus megalops). The species is an opportunistic predator that consumes a wide range of prey items. When importance of prey was measured by weight or occurrence, S. meg
Autor:
Paul J. Rogers, Charlie Huveneers, Sabine P. Wintner, Martin T. Benavides, Demian D. Chapman, Joanna Alfaro-Shigueto, Daniel P. Cartamil, Jeffrey C. Mangel, Kevin A. Feldheim, Clinton A. J. Duffy, Jessica J. Boomer, J. Matías Braccini
Publikováno v:
Marine and Freshwater Research. 62:861
The copper or bronze whaler shark (Carcharhinus brachyurus) is a large, coastal top predator that is vulnerable to overexploitation. We test the null hypothesis that copper sharks are panmictic throughout the southern hemisphere. We analysed part of
Publikováno v:
Marine and Freshwater Research. 60:898
Four methods for counting growth bands using vertebrae and dorsal-fin spines of the Port Jackson shark, Heterodontus portusjacksoni, are compared. Both calcified structures presented observable growth bands, allowing cross comparison among structures
Publikováno v:
Marine and Freshwater Research. 58:24
Age and growth estimates of Squalus megalops were derived from the first dorsal fin spine of 452 sharks, ranging from 274 to 622 mm total length. Age bias plots and indices of precision indicated that the ageing method was precise and unbiased. Edge