Birth rate decline, fish net entanglements threaten recovery
Some whale populations have recovered strongly since end of the whaling era, but North Atlantic right whales are still struggling and their recovery is in doubt. More and more, the marine mammals are getting entangled in nets, and their overall birth rate has declined by 40 percent since 2010, marine researchers reported this week in the journal Frontiers in Marine Science.
About 500 North Atlantic right whales still survive after two decades period of modest annual growth, but even that was slow compared to other species — 2 to 3 percent a year compared to 6 to 7 percent in other regions, the study found. One recent study found that a different species of right whale is currently making a comeback around New Zealand, with pioneers from Antarctic waters once again visiting the island’s sandy bays to reestablish breeding grounds.
“Right whales need immediate and significant management intervention to reduce mortalities and injuries from fishing gear,” the authors concluded in the study. “Managers need a better understanding about the causes of reduced calving rates before this species can be considered on the road to recovery. Failure to act on this new information will lead to further declines in this population’s number and increase its vulnerability to extinction.” Continue reading “Study IDs threats to North Atlantic right whales”→
Better monitoring and enforcement of gill net ban needed in Gulf of California
So far, Mexico’s efforts to save the Gulf of California’s endangered vaquita haven’t been enough, according to conservation activists tracking the last-ditch attempt to save one of the world’s most endangered marine mammals. By some estimates, as few as 50 vaquita remain.
Advocacy groups say the proposal leaves a few loopholes
Consumers in the U.S. may soon get some help in figuring out if their seafood comes from sustainable fisheries. A national group that’s been tackling illegal fishing this week announced a proposal for creating a U.S. seafood traceability — another step toward ensuring that global seafood resources are sustainably managed and not fraudulently marketed. The proposal aims to trace the origins of imported seafood by establishing reporting and filing procedures for imported fish and fish products entering U.S. commerce. Continue reading “Feds propose regs to tackle seafood fraud”→
Hong Kong prosecution of black market traders could help slow illegal fishing in Gulf of California vaquita preserve
By Bob Berwyn
Conservation groups and the Mexican government are making progress in trying to avert extinction of the vaquita porpoise, a small marine mammal that lives only in a few thousand square miles in the northern Gulf of California.
Late last month, Greenpeace announced that several Hong Kong traders involved in selling illegal marine products from the Gulf of California were convicted and fined for their activities, which could help deter more trade in illegal marine products from the region. It’s that trade that’s pushing the vaquita to the brink of extinction.
Like in other countries, some Irish fishermen have been complaining that seals are increasingly eating up valuable commercial fish stocks, but a new scientific study says that’s generally not the case, with the possible exception of wild Atlantic salmon.
The work done by researchers with Queen’s University Belfast, Northern Ireland, shows that seals don’t have a significant impact on herring, mackerel, cod, haddock, whiting and 30 other species caught for commercial purposes along the south and west coasts of Ireland, from counties Galway to Waterford. Continue reading “Do seals compete with commercial fishermen?”→