Trace Element Analysis of Fish Sagittae as an Aid to Stock Identifications: Pink Snapper (Chrysophrys auratus) in Western Australian Waters

1989 ◽  
Vol 46 (1) ◽  
pp. 50-54 ◽  
Author(s):  
J. S. Edmonds ◽  
M. J. Moran ◽  
N. Caputi ◽  
M. Morita
Keyword(s):  
Trace Elements ◽  
Environmental History ◽  
Inductively Coupled Plasma ◽  
Trace Element Analysis ◽  
Atomic Emission ◽  
Canonical Variate ◽  
Emission Spectrometry ◽  
Fish Length ◽  
Plasma Atomic Emission Spectrometry ◽  
Element Analysis

Concentrations of trace elements in the sagittal otoliths of pink snapper (Chrysophrys auratus) from seven locations along the coast of Western Australia were measured by inductively coupled plasma atomic emission spectrometry (ICP-AES). Canonical variate (discriminant) analyses of the concentrations of eight elements (Na, Mg, Si, P, S, K, Fe, and Sr) from all fish when corrected for fish length showed the pattern of concentrations to be specific to the location of capture of the fish. Trace elements are likely to be irreversibly deposited in the sagittae during growth and should provide an integrated environmental history of each fish. Differences in elemental composition may thus be useful for identifying nonmixing groups of fish that may be regarded as separate stocks for some fisheries management purposes.

Stock discrimination by trace-element analysis of otoliths of orange roughy (Hoplostethus atlanticus), a deep-water marine teleost.

1991 ◽  
Vol 42 (4) ◽  
pp. 383 ◽  
Author(s):  
JS Edmonds ◽  
N Caputi ◽  
M Morita
Keyword(s):  
Inductively Coupled Plasma ◽  
Trace Element Analysis ◽  
Atomic Emission ◽  
Canonical Variate ◽  
Emission Spectrometry ◽  
Plasma Atomic Emission Spectrometry ◽  
Orange Roughy ◽  
Element Analysis ◽  
Inductively Coupled ◽  
Hoplostethus Atlanticus

Concentrations of trace elements in sagittal otoliths of orange roughy (Hoplostethus atlanticus) from three areas (off Adelaide, and off the eastern and western coasts of Tasmania) were measured by inductively coupled plasma-atomic emission spectrometry and inductively coupled plasma-mass spectrometry. Canonical-variate (discriminant) analyses of the concentrations of 10 elements (Ba, Cd, Cu, K, Mg, Na, Pb, S, Sr, Zn) showed that the patterns of element concentrations were specific to the areas where fish were captured. These results suggest that there is little movement of fish between the three areas. The elements that were most important in discriminating between the areas were Mg, Na and S.

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