{"id":545256,"date":"2026-03-18T20:41:15","date_gmt":"2026-03-18T20:41:15","guid":{"rendered":"https:\/\/www.newsbeep.com\/ca\/545256\/"},"modified":"2026-03-18T20:41:15","modified_gmt":"2026-03-18T20:41:15","slug":"new-invader-a-threat-to-native-species-and-rivers-in-mississauga-and-brampton-cvc","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/ca\/545256\/","title":{"rendered":"New invader a threat to native species and rivers in Mississauga and Brampton: CVC"},"content":{"rendered":"

An invasive species new to the Credit River Watershed in Mississauga, Brampton and other parts of Peel poses a threat to native species and the aquatic habitat of the region, conservation officials say.<\/p>\n

Credit Valley Conservation, the organization that protects natural areas and watercourses in Peel\u2019s municipalities and several other communities, said earlier this month the red swamp crayfish is a relatively new arrival to the area.<\/p>\n

\u201cNot all crayfish are welcome guests. The red swamp crayfish is an invasive species new to the Credit River Watershed,\u201d the conservation authority said online. \u201cHighly adaptable and fast-reproducing, it can outcompete native species, damage aquatic habitat and disrupt food webs once established.\u201d<\/p>\n

CVC officials urge people who spot the crayfish to report it to the conservation authority in efforts to \u201cprotect our rivers and wetlands.\u201d<\/p>\n

The red swamp crayfish is native to freshwater bodies of northern Mexico, and the southern and southeastern United States. However, it has also been introduced elsewhere \u2014 both in North America and other continents \u2014 where it is often categorized as an invasive pest.<\/p>\n

Credit Valley Conservation said in an online notice to the community that invasive species are non-native plants, animals, insects or pathogens that \u201cnegatively alter their new environments.\u201d<\/p>\n

<\/p>\n

\"\" <\/p>\n

However, not all non-native species are considered invasive, the conservation authority added, noting the species must cause negative environmental, economical and\/or social impacts in order to be categorized as invasive.<\/p>\n

According to CVC, invasive species:<\/p>\n

Often have been introduced by humans.
\nMay directly kill other species, introduce disease or hybridize with native species.
\nTypically prefer disturbed habitats.
\nHave high reproductive rates.
\nLack natural predators.<\/p>\n

\u201cManaging and removing invasive species is critical to protecting our watershed\u2019s natural biodiversity and beauty,\u201d CVC officials said.<\/p>\n

Not all crayfish are welcome guests. \ud83e\udd9e <\/p>\n

The red swamp crayfish is an invasive species new to the Credit River Watershed. Highly adaptable and fast-reproducing, it can outcompete native species, damage aquatic habitat, and disrupt food webs once established. Protect our rivers\u2026 pic.twitter.com\/bBlsWQpmbF<\/a><\/p>\n

\u2014 Credit Valley Conservation (@CVC_CA) March 1, 2026<\/a><\/p>\n

Historically, according to CVC, European settlers in North America often brought things with them \u2014 including invasive species, either intentionally or not.<\/p>\n

That still happens today, the conservation authority added, noting there are many ways invasive species are spread:<\/p>\n

Between lakes and rivers when boats and ships dump ballast water (used to balance ships in rough water) or when small critters including zebra mussels or aquatic plants hitch a ride on a recreational boat.
\nAnglers and the baitfish industry may dump unwanted bait into waterbodies.
\nLocal nurseries may sell invasive plants that have not been regulated.
\nThe importation of wood products or other shipping materials can bring unnoticed pests such as emerald ash borer or Asian long-horned beetle.
\nSeeds from invasive plants can get caught on hikers or bikers boots, clothing and gear as they explore the outdoors.<\/p>\n

\u201cThe rapid spread of invasive species has become a major concern worldwide,\u201d CVC said.<\/p>\n

From an ecological perspective, there\u2019s concern about:<\/p>\n

The displacement of diverse native species.
\nImpacts on species that rely on native plants for food and habitat.
\nReduced genetic diversity.<\/p>\n


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