Relationship between elemental concentration and age from otoliths of adult snapper (Pagrus auratus, Sparidae): implications for movement and stock structure

2005 ◽  
Vol 56 (5) ◽  
pp. 661 ◽  
Author(s):  
A. J. Fowler ◽  
B. M. Gillanders ◽  
K. C. Hall
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Elemental Concentration ◽  
South Australia ◽  
Stock Structure ◽  
Habitat Types ◽  
Inductively Coupled ◽  
Age Related ◽  
Pagrus Auratus ◽  
Plasma Mass Spectrometry

The present study investigated the stock structure of snapper (Pagrus auratus) in South Australia, and the extent to which this is influenced by adult movement. Fish from the 9+ age class were sampled from six different regions, encompassing >2000 km of coastline and different habitat types. The chemistry of transverse sections of otoliths was sampled using laser ablation inductively coupled plasma-mass spectrometry, providing elemental profiles that were related to age for the first nine years of the fish’s lives. The age-related annual averages for both 88Sr and 138Ba differed significantly between regions. They were, however, similar for the first three years, then diverged considerably between the ages of three to five years, and then remained consistently different through to the age of nine years. This suggests that all fish, regardless of where captured, originated from only one or two nursery areas, but dispersed throughout the different regions between the ages of three to five years, before becoming resident to their new regions of occupancy. Thus, this population of snapper represents a single, large, stock where the individuals have a common origin, but through age-related emigration ultimately disperse and supplement the low abundance populations in regional State waters.

Relationship between otolith chemistry and age in a widespread pelagic teleost Arripis trutta: influence of adult movements on stock structure and implications for management

2016 ◽  
Vol 67 (2) ◽  
pp. 224 ◽  
Author(s):  
Julian M. Hughes ◽  
John Stewart ◽  
Bronwyn M. Gillanders ◽  
Damian Collins ◽  
Iain M. Suthers
Keyword(s):  
Inductively Coupled Plasma ◽  
New South ◽  
Age Groups ◽  
Stock Structure ◽  
Inductively Coupled ◽  
South Wales ◽  
Age Related ◽  
Spatial Management ◽  
Plasma Mass Spectrometry ◽  
Elemental Fingerprint

This study investigated how the stock structure of Arripis trutta is influenced by the movement of adult fish. Five-year-old fish were sampled from four regions in south-east Australia encompassing ~1500km of coastline. Transverse otolith sections were analysed using laser-ablation inductively coupled plasma-mass spectrometry, providing age-related elemental profiles. Multivariate analyses showed that for most age groups, the elemental fingerprint of northern New South Wales (NSW) fish was significantly different from those of the other locations. Northern NSW fish also had a different fingerprint from those of all other locations for the first part of the fish’s life. These results indicate that most A. trutta originate in southern NSW, Victoria and Tasmania and move progressively northward with increasing age. Some recruitment occurs in northern NSW but these fish may not mix with immigrants from further south until they are more than 5 years old. When assessed with the strong latitudinal age gradient of the population, these data are consistent with a single, panmictic stock. The data also highlight the utility of otolith transect analysis in understanding the influence of age-related movements on stock structure and appropriate spatial management of exploited fish species.

Multi-elemental concentration in different body parts of Sepiella inermis by inductively coupled plasma mass spectrometry

2019 ◽  
Vol 27 (3) ◽  
pp. 2797-2804 ◽  
Author(s):  
Palaniappan Seedevi ◽  
Vasantharaja Raguraman ◽  
Thodhal Yoganandham Suman ◽  
Kannan Mohan ◽  
Sivakumar Loganathan ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Elemental Concentration ◽  
Body Parts ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry

Single Particle Inductively Coupled Plasma Mass Spectrometry: Investigating Nonlinear Response Observed in Pulse Counting Mode and Extending the Linear Dynamic Range by Compensating for Dead Time Related Count Losses on a Microsecond Timescale

2019 ◽  
Author(s):  
Ingo Strenge ◽  
Carsten Engelhard
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Nonlinear Response ◽  
Dynamic Range ◽  
Dead Time ◽  
Inorganic Nanoparticles ◽  
Linear Dynamic Range ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

<p>The article demonstrates the importance of using a suitable approach to compensate for dead time relate count losses (a certain measurement artefact) whenever short, but potentially strong transient signals are to be analysed using inductively coupled plasma mass spectrometry (ICP-MS). Findings strongly support the theory that inadequate time resolution, and therefore insufficient compensation for these count losses, is one of the main reasons for size underestimation observed when analysing inorganic nanoparticles using ICP-MS, a topic still controversially discussed.</p>

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