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New species of deepwater snapper identified from shape of ear bones
Friday, 13 December 2013 15:42

snapperThe ruby snapper has been a prize catch for deepwater snapper fishers throughout the Pacific for many decades. But recently, we discovered that there are actually two species of ruby snapper: the ruby snapper (Etelis carbunculus), and the pygmy ruby snapper (Etelis marshi). We have now developed a reliable technique to distinguish between the two species, based on the shape of their otoliths (ear bones). The results from this research have been published online in the latest issue of Fisheries Research.

SPC secures a unique world record – 100,000 tuna tagged by one individual
Friday, 20 December 2013 11:15

The tuna tagging experiments conducted by SPC’s Oceanic Fisheries Programme (OFP) are acknowledged to be among the most comprehensive in the world and have recently achieved yet another milestone.

After four decades of involvement in Pacific Island tuna fisheries, Dr Antony Lewis recently achieved the mark of 100,000 tuna tagged by an individual, which is a world record unlikely ever to be surpassed.

Conservation forensics help unlock tuna mysteries
Thursday, 10 October 2013 14:44

otholithTunas are highly mobile fishes that often undertake long-range movements to track food and to reproduce at distant spawning grounds. Information on these movements underpins the effective management of commercially important tuna stocks. In the case of South Pacific albacore (Thunnus alalunga), longstanding questions remain regarding the number and location of spawning areas, the degree of connectivity among larval sources, the migration routes of juveniles and adults and the biophysical factors influencing these processes.

EMA - Tuna Biology and Behavior
Tuesday, 25 November 2008 13:46

Age and growth of tropical tunas

Otolith reading of daily increments is now routinely carried out, and estimates of age and growth of yellowfin and bigeye tuna, based on these readings combined with available tagging data, and using composite growth models have been presented to SCTB 12. Whilst these estimates can be further refined, they represent a significant inprovement in the description of growth of the two tuna species in the region.

Improving the management of deepwater snapper resources in Pacific Island Countries and Territories
Thursday, 10 October 2013 11:47

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Deepwater snapper are an important fisheries resource for many SPC member countries, where they support important domestic and export markets. However, there is a lack of management plans in most SPC member countries except the US territories and Tonga, and a lack of information on the status of stocks which could be used to develop or further refine management plans. Conducting a traditional stock assessment for deepwater snapper stocks is a challenging and expensive exercise. So SPC has been working with member countries to develop rigorous and objective monitoring and assessment methods to ensure deepwater snapper fisheries in the region are managed at biologically and economically sustainable levels. The successful implementation of this work requires a high level of in-country expertise and understanding of monitoring and assessment methods. To facilitate this expertise, SPC members have invested in four of their brightest fisheries scientists to lead the way forward.


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