photo from Michigan Sea Grant
When we monitor streams, we give a lot of love to the Macroinvertebrates, but skeletal creatures indicate water quality, too! Here’s a roundup of trials and comebacks our fish buddies have gone through lately. Check out these links; You might be suprised what you learn.
Brave New Fish. Nancy Gross reports a curious new finding on the Water Effiency editor’s blog :
A study published by researchers at Umeå University “showed that remnants of oxazepam, a drug used for anxiety, resulted in braver and more curious activity among normally timid fish. Individuals exposed to the drug examined their surroundings more freely than normally,” the Helsinki Times recently recently reported.
Good: sturgeon return. Bad: rockfish fall. Ugly: a killer plant comes back to the bay. Washington Post’s Darryl Fears outlines the perils of living in Chesapeake Bay:
It is a sign of troubling times in America’s largest estuary, even in the midst of an aggressive anti-pollution effort that is in its fourth year. The bay is beset by man-made waste and overfishing. And it is laced with diseases that take the lives of countless oysters and striped bass and with chemicals that are changing the sex of male smallmouth bass.
But the sturgeon is a sign that the bay can recover. And even though the numbers of striped bass are down, they’re not at the historic lows of the mid-1980s, when several states were forced to halt fishing to help them recover.
Great Lakes States to Track Asian Carp and Prepare for Future Invasions. Kaye LaFond of freshwater news source Circle of Blue reports:
The less threatening nature of the grass carp gives various state, federal, and provincial agencies from around the Great Lakes a unique opportunity to practice for what would be a true emergency: the establishment of silver or bighead carp in Lake Erie or other Great Lakes waterways.
Battle over caviar production rages in Missouri, Oklahoma. Published earlier this year, but no less timely, Al Jazeera ran this story by Missouri’s own Ryan Schuessler:
Decades ago, the international caviar market was on the verge of collapse. In the years leading up to and following the demise of the Soviet Union, beluga sturgeon in the Caspian Sea were overfished. By the late ’80s, they were on the verge of extinction and became a protected species. Demand for the delicacy remained high, supply plummeted and prices soared.
Half a world away in the Missouri Ozarks, Jim Kahrs, Steve and Pete’s father, saw that as an opportunity and became one of the early players in the American caviar market, turning his family-run fishery into an international caviar exporter.
Got any fish news of your own? Leave us a comment on this post! But please — no fishing tales.