Delta Smelt & Wild Fish in California all Headed for Extinction


Alex Wierbinski's picture

By Alex Wierbinski - Posted on 23 February 2018

 

Delta Fish & Water
Latest Smelt News

A Third of Samples Not Really Smelt

When Every Fish Counts Genetic Tools Can Ensure Accuracy of Identification,
UC Davis, February 21, 2018.

"... researchers conducted genetic analysis on fin clips from endangered delta smelt, threatened longfin smelt and invasive wakasagi smelt. The fin clips were among those collected as part of the Yolo Bypass Fish Monitoring program."

"About 27 percent of the fish originally thought to be native delta smelt in the Yolo Bypass were actually nonnative wakasagi. Overall, roughly a third of the samples were misidentified."

"Delta and longfin smelt are native to the San Francisco Estuary but have experienced drastic population declines in recent years. The latest California fish survey in the Sacramento-San Joaquin Delta found only two delta smelt during four months of trawling from September to December."

"The results do not suggest that there are fewer delta smelt overall than previously thought."

 

Yeah, the scientists know you can't have fewer than zero...

 

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not genetic delta smelt headed for extinction genetic testing

 

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