National Fisherman


Researchers are studying precociously mature dwarf males for ways to selectively breed farmed salmon that better withstand higher ocean temperatures.

Warmer ocean temperatures resulting from climate change may lead to earlier sexual maturation in salmon – which could spell problems for the aquaculture industry. Now, the Institute of Marine Research is applying knowledge about the salmon genome in experiments to influence the onset of puberty in farmed salmon through selective breeding.

The project, called Salmat, receives funding from the Research Council of Norway as part the research effort targeted towards understanding climate change and the adaptations it requires.

"The project's objective is to identify genes or regions of genetic material that regulate the onset age of sexual maturation in salmon," explains project manager Anna Wargelius, who is a senior scientist at the Institute of Marine Research. "Since puberty is also modulated by environmental factors such as light, temperature and food supply, the project will study whether and how environmental factors affect the genes that control sexual maturation."

Read the full story at PhysOrg>>

Inside the Industry

The Southeast Alaska Fishermen’s Alliance recently announced that the National Marine Sanctuary Foundation has awarded the organization a Hollings Grant to reduce whale entanglements in Alaska salmon fisheries by increasing the use of acoustic whale pingers to minimize entanglements in fishing gear.

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Last week, Alaska senators Lisa Murkowski (R), Dan Sullivan (R) and Rep. Don Young (R) asked Secretary of State John Kerry to negotiate with Canadian leaders to make sure appropriate environmental safeguards are in place for mine development in Southeast Alaska.

The congressional delegation explained the importance of this issue to Alaskans and the need for assurances that the water quality in transboundary waters between Alaska and Canada will be maintained.

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