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Where Soybeans Meet The Sea: Midwest Aquaculture May Boost Demand For Local Grain

July 9, 2019 — Midwestern fish farmers grow a variety of species, such as tilapia, salmon, barramundi and shrimp, all of which require a high-protein diet. The region grows copious amounts of soybeans, which have a lot of protein, but these two facts have yet to converge.

Take Eagle’s Catch, a tilapia farm in Ellsworth, Iowa, where a nearly 4-acre greenhouse is filled with tanks that segregate the fish by size. CEO Joe Sweeney said he feeds the fish a soybean-based diet he buys from a processor in the South.

“We’re actually getting it from Louisiana, unfortunately,” Sweeney said, “feeding Louisiana and Arkansas soybeans. But as time goes on I look forward to feeding them that Iowa product.”

Across the 12 states served by the North Central Regional Aquaculture Center, from Ohio to North Dakota to Kansas, hundreds of businesses are trying to raise fish for food. But local demand will have to grow to make them viable. If that happens, aquaculture could provide a new market for Midwestern soybeans and other grains at a time when turmoil in international trade and several years of very high yields have led to oversupply.

Read the full story at KCUR

Baby fish will be lost at sea in acidified oceans

December 15, 2015 — The ability of baby fish to find a home, or other safe haven, to grow into adulthood will be severely impacted under predicted ocean acidification, University of Adelaide research has found. 

Published today in the journal Proceedings of the Royal Society B, the researchers report the interpretation of normal ocean sound cues which help baby fish find an appropriate home is completely confused under the levels of CO2 predicted to be found in oceans by the end of the century.

“Locating appropriate homes is a crucial step in the life cycle of fish,” says Tullio Rossi, PhD candidate with the University’s Environment Institute. “After hatching in the open ocean, baby fish travel to reefs or mangroves as safe havens to feed and grow into adults.

“Baby fish can find those places through ocean noise: snapping shrimps and other creatures produce sounds that the baby fish follow.

“But when ocean acidity increases due to increased CO2, the neurological pathways in their brain are affected and, instead of heading towards those sounds, they turn tail and swim away.”

Read the full story at Science Daily

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