Aquaculture Group

Researchers at James Cook University are trying to find ways to improve aquaculture species through the application of animal breeding methods. The group are primarily concentrating on animals farmed in tropical waters.

Some of the areas being studied:

(1) The genetics of pearl production. What is most important in producing a good pearl, the genes of the host oyster, the genes of the implant material from the donor oyster used as the seed for the pearl, or the environment? Also being investigated are ways to identify the genetic basis of traits associated with quality pearls grown in the silver-lipped pearl oyster.

(2) Barramundi genetics. Currently very little is known about barramundi genetics and the genetic control of traits. Without this knowledge it is difficult to improve growth and flavour through selective breeding programs. This group is focusing on: how hatchery practices affect genetic diversity; how changes in temperature affect growth, and on identifying genes to assist selection of desirable traits.

(3) How do coral reef fish respond to stress? Global warming and climate change are expected to increase sea water temperature and acidification, and this together with pollution from agricultural chemicals is expected to place pressures on the growth and survival of reef fish.

Future management of our reefs, as well as fish as a food source, requires an understanding of these variables. We need to know how coral reef fish respond to these stresses genetically, as well as how they cope with the environmental changes.

Contact person: Dean.Jerry@jcu.edu.au