Otolith shape and elemental composition: Complementary tools for stock discrimination of mulloway (Argyrosomus japonicus) in southern Australia

2011 ◽  
Vol 110 (1) ◽  
pp. 75-83 ◽  
Author(s):  
Greg J. Ferguson ◽  
Tim M. Ward ◽  
Bronwyn M. Gillanders
Keyword(s):  
Elemental Composition ◽  
Otolith Shape ◽  
Stock Discrimination

Otolith shape analysis as a tool for stock discrimination of forkbeard (Phycis phycis) in the Northeast Atlantic

Hydrobiologia ◽  
2014 ◽  
Vol 728 (1) ◽  
pp. 103-110 ◽  
Author(s):  
Ana Rita Vieira ◽  
Ana Neves ◽  
Vera Sequeira ◽  
Rafaela Barros Paiva ◽  
Leonel Serrano Gordo
Keyword(s):  
Shape Analysis ◽  
Otolith Shape ◽  
Otolith Shape Analysis ◽  
Northeast Atlantic ◽  
Stock Discrimination ◽  
Phycis Phycis

Usefulness of Fourier Analysis of Otolith Shape for Atlantic Mackerel (Scomber scombrus) Stock Discrimination

1991 ◽  
Vol 48 (2) ◽  
pp. 296-302 ◽  
Author(s):  
Martin Castonguay ◽  
Patrick Simard ◽  
Pierre Gagnon
Keyword(s):  
Stock Structure ◽  
Discriminant Functions ◽  
Position Effects ◽  
Northwest Atlantic ◽  
Otolith Shape ◽  
Atlantic Mackerel ◽  
Scomber Scombrus ◽  
The North ◽  
Stock Discrimination ◽  
The North Sea

We compared shapes of Atlantic mackerel (Scomber scombrus) sagittae between the two contingents (i.e. spawning groups) from the Northwest Atlantic and between the stocks from the Northwest Atlantic and the North Sea to evaluate whether otolith shape could differentiate between the two contingents in a mixed fishery. We quantified shapes with the Fourier series, an objective and rapid method which decomposes a shape's outline into a series of sinusoids. To determine a correct way to compare contingents/stocks, we first assessed four intracontingent effects on otolith shapes. Age and year-class effects were significant, while sex and bilateral position effects were not. This temporal instability in shapes indicates that confounding effects of age and year-class on otolith shapes need to be assessed carefully before drawing conclusions on stock structure. It also shows that comparative studies of otolith shapes with Fourier descriptors are not useful for mackerel contingent discrimination. The power of discriminant functions to correctly classify test mackerel samples separated by age and sampling year, on the basis of otolith shape, was better for comparisons between the stocks than for those between the contingents.

Otolith shape classification for fish stock discrimination

2014 ◽  
Author(s):  
Jose Antonio Soria ◽  
Kamal Nasreddine ◽  
Vicenc Parisi-Baradad ◽  
Lluis Ferrer-Arnau ◽  
Abdesslam Benzinou
Keyword(s):  
Fish Stock ◽  
Shape Classification ◽  
Otolith Shape ◽  
Stock Discrimination

X-Ray Fluorescence Spectroscopy as a Tool for Fish Stock Discrimination

1975 ◽  
Vol 19 ◽  
pp. 487-495
Author(s):  
R. Kieser ◽  
T. J. Mulligan
Keyword(s):  
Pattern Recognition ◽  
Fluorescence Spectroscopy ◽  
Elemental Composition ◽  
Fish Stock ◽  
Fish Tissues ◽  
Fish Stocks ◽  
X Ray ◽  
Stock Discrimination ◽  
Elemental Data

X-ray fluorescence spectroscopy is being used to measure the elemental composition of fish tissues. The elemental data are then subjected to pattern recognition procedures in an attempt to discriminate fish stocks.

Comparing body and otolith shape for stock discrimination of Pacific sardine, Sardinops sagax Jenyns, 1842

2013 ◽  
Vol 29 (6) ◽  
pp. 1241-1246 ◽  
Author(s):  
F. J. Vergara-Solana ◽  
F. J. García-Rodríguez ◽  
J. De La Cruz-Agüero
Keyword(s):  
Otolith Shape ◽  
Stock Discrimination ◽  
Pacific Sardine ◽  
Sardinops Sagax
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