species goldfish Carassius auratus Eastern Asia including China and perhaps adjacent regions also possibly parts of Europe if Carassius auratus is a valid subspecies and not just a feral ID: 481239
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Slide1
Invasives
species- goldfish(Carassius auratus) Slide2
Eastern Asia, including China and perhaps adjacent regions
also possibly parts of Europe if Carassius auratus is a valid subspecies and not just a feral
introduction.
Where it came fromSlide3
The goldfish
first was brought into this country shortly after the early part of the seventeenth century.The first recorded goldfish releases in the United States occurred during the late 1600s, and they suggested that these earliest introductions resulted from intentional releases by settlers wanting to add it to the North American fish fauna, as opposed to goldfish escaping from ponds.
Date of introduction Slide4
G
oldfish that have been widely introduced throughout the U.S. via aquarium dumping. The site of the introduction is unknown.
Cause of introductionSlide5
Goldfish have been introduced worldwide. They are established in locations throughout all provinces of Canada and all of the United States except Alaska. In Ontario, established populations have been reported along the
shore of Lake Erie, the west end of Lake Ontario, and sometimes in other locations across the province.
Where the species is now Slide6
This has prompted officials to begin the “Don’t Let it Loose” campaign which aims to warn people of the environmental and economic dangers of letting non-native pet species loose into local lakes.
The problem with goldfish in particular is that, like other species of carp, they are limited by the size of tank they are kept in. Once in open water however, they will grow and get surprisingly large, which means they will eat more and be that much harder for native species to live with. There’s another issue too. As the Washington Post reports, goldfish feces
may
encourage algae which in turn can further disrupt the underwater environment.
“That’s really scary because it means they’re reproducing in the wild, they are getting quite large and they are surviving the winters that far north,”
Damage caused by the goldfish Slide7
http://
nas.er.usgs.gov/queries/factsheet.aspx?speciesid=508http://wdfw.wa.gov/ais/carassiushttp://www.invadingspecies.com/invaders/fish/goldfish/us
/
http://
dnr.wi.gov/wnrmag/2010/04/invasives.htm
Work cited