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Old 04-15-2009, 10:09 PM   #1
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Default Voracious goby extends its range to deeper water, threatening Great Lakes, scientists say

Voracious goby extends its range to deeper water, threatening Great Lakes, scientists say
by Jeff Alexander | The Grand Rapids Press
Monday April 13, 2009, 5:08 AM

Voracious goby extends its range to deeper water, threatening Great Lakes, scientists say - Grand Rapids News - The Latest News, Blogs, Photos & Videos MLive.com
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A half-century after alewives disrupted Great Lakes fisheries and trashed beaches, another invasive fish is engaged in a biological conquest of the world's largest freshwater ecosystem.

The round goby is taking over large swaths of the Great Lakes and their connecting waters, according to scientists studying the invader. Gobies breed like rabbits and eat like pigs, causing profound changes at the base of a food chain that supports the Great Lakes $7 billion sport and commercial fisheries.

New research conducted in Green Bay, Wis., found that gobies were hogging tiny aquatic organisms that other fish species need to survive.
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Old 02-12-2019, 09:44 AM   #2
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Voracious goby extends its range to deeper water, threatening Great Lakes, scientists say-dsc_2795.jpg
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gobies breed like rabbits and eat like pigs, causing profound changes at the base of a food chain
Voracious goby extends its range to deeper water, threatening Great Lakes, scientists say-p1050903.jpg
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the small, bug-eyed fish do provide some benefits:
They feast on zebra and quagga mussels, foreign species that also were imported by ocean freighters.
Voracious goby extends its range to deeper water, threatening Great Lakes, scientists say-p1050899.jpg
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but.....the goby's consumption of zebra mussels is a double-edged sword.
Shrinking the mussel population reduces the incidence of noxious algae blooms the mollusks cause;
their shells are often then colonized by desirable aquatic organisms that fish eat converting zebra mussels to usable food for top predators.

Food that, if not eaten by gobies...... Would be just an ecological dead end
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