Western Gemfish Project

Gemfish sample collection growing

Thanks to the efforts of Russell Hudson and commercial fishers, the Molecular Fisheries Laboratory has received 246 new samples.DCP06270_trimmed copy They represent fish populations from the Great Australian Bight and south-east Australia. Genetic data from the samples, along with information about the reproductive state of the fishes, will lead to increased understanding of the stock structure of the western part of the range of gemfish. The Gemfish project is currently underway in the MFL collaboration with Andy Moore from ABARES in Canberra.
By : Jenny Ovenden /May 13, 2014 /Latest News /Comments Off on Gemfish sample collection growing Read More

Record breaking PhD thesis submitted

IMG_3668Carlos Bustamante submitted his PhD thesis yesterday. In three years and three months, Carlos has published 10 papers - seven of which were included in his thesis entitled "Biology, Taxonomy and Distribution of south-east Pacific Cartilaginous Fishes" Carlos and colleagues celebrated yesterday (left to right, Carlos Bustamante, Bonnie Holmes, Carolina Vargas-Caro, Mike Bennett, Kate Burgess and Samuel Williams). Carlos was supervised by Mike Bennet during his PhD. Carlos is working with Jennifer Ovenden and Andy Moore on the Gemfish project.
By : Jenny Ovenden /May 09, 2014 /Latest News /Comments Off on Record breaking PhD thesis submitted Read More

When and where do gemfish spawn?

DCP06270_trimmed copyThe fishing industry and the Australian Fisheries Management Agency (AFMA) generously agreed to take extra samples for the gemfish project when project leader Andy Moore met with them last week. Andy says this will ensure the project has the best possible picture of the timing and location of spawning in this important commercial species. Jenny Ovenden says this information will be essential to work out the spatial stock structure of the species from the genetic analyses that are underway. Russell Hudson from Fishwell Consulting and AFMA will coordinate the sampling effort.  
By : Jenny Ovenden /February 24, 2014 /Latest News /Comments Off on When and where do gemfish spawn? Read More

Next generation sequencing aids gemfish fishery

R sol mtDNA.jpgThe genome of a gemfish has been sequenced at MFL. The fish sequenced was landed by FV Territory Pearl on 3rd November 2013 off the South Australian coast and was provided by Raptis P/L from Adelaide. The information in the genome will help to analyse the spatial extent of the fishery in the Great Australian Bight. Read more about this project here.  
By : Jenny Ovenden /January 29, 2014 /Latest News /Comments Off on Next generation sequencing aids gemfish fishery Read More

Meeting discusses gemfish biology

[caption id="attachment_833" align="alignleft" width="300"]Gemfish_observer AFMA observer with female gemfish, 94 cm in length (photo Jim Raptis, 2013).[/caption] During a recent meeting in Adelaide, the Great Australian Bight Research Assessment Group (GABRAG) discussed the western gemfish project and the biology of this species. Those who attended the meeting included (left to right) Ian Knuckey, Jim Raptis, Andy Moore, Jeff Moore, Marcus Finn and Andrew Trappett (photo Jeff Moore).
By : Jenny Ovenden /December 02, 2013 /Latest News /Comments Off on Meeting discusses gemfish biology Read More

Gemfish – but which one?

Dr Andrea Armani from the Fish Lab of the Department of Veterinary Science at the University of Pisa (Italy) is developing a genetic method for the identification of species of the gemfish family in the northern hemisphere (in particular Rexea pretiosus and Lepidocybium flavobrunneum). These species are often mislabeled in the marketplace. The genetic multiplex test will be available for use by private companies and governments to improve consumer confidence in the fishing industry. Andrea will be working with the COI gene of the mitochondrial genome. The Molecular Fisheries Laboratory will help by sending some fin clips from Australian gemfish (Rexea solandri) for validation test. [caption id="attachment_808" align="alignleft" width="300"]R. solandri The Australian gemfish (Rexea solandri)[/caption] [caption id="attachment_806" align="alignleft" width="300"]R. pretiosus The European gemfish (Rexea pretiosus).[/caption]  
By : Jenny Ovenden /November 26, 2013 /Latest News /Comments Off on Gemfish – but which one? Read More

First Gemfish samples arrive

[caption id="attachment_791" align="alignleft" width="300"]Carlos_DNAExtraction Carlos Bustamante (above) and Jenny Ovenden are working on the genetic analyses.[/caption] MFL has received the first batch of samples for the gemfish project from Raptis P/L in Adelaide (South Australia). Genetic information  from these samples, and many others along the Southern Australian coastline, will provide important new information to ensure sustainable harvesting of this fisheries resource. Raptis_logo                  
By : Jenny Ovenden /November 22, 2013 /Latest News /Comments Off on First Gemfish samples arrive Read More

Gemfish sampling underway

Gemfish project leader Andy Moore from ABARES in Canberra discussed the final survey design with members of the GABRAG (Great Australian Bight Resource Assessment Group) at a meeting on the November 31 2013 in Port Lincoln, South Australia. The fishing industry is very supportive of the research and have offered their help to collect samples. This week, Jenny Ovenden (right) met with Don Colgan (left) and John Paxton at the Australian Museum in Sydney. Don and John were the authors of the original funded study on gemfish. They reported two separate populations; one on the Australian east coast, and the likelihood of another in the Great Australia Bight. The current gemfish project will re-examine this hypothesis using new samples and samples from the original project that are being made available by the Fish Section of the Australian Museum. This will add certainty to the assessment of the status of the fishery and help with sustainability of the industry  
By : Jenny Ovenden /November 14, 2013 /Latest News /Comments Off on Gemfish sampling underway Read More