Invasive invertebrates other than insects and spiders

Last updated on December 18, 2024

Invasive invertebrates other than insects and spiders are from one part of the world that are transported, or migrate due to climate change, beyond their natural range and become established in a new area where they can cause potential harm to native ecosystems.

There are 5 priority categories for invertebrates which determine the province's response. They are: 

  1. Prevent
  2. Early detection and rapid response (EDRR)
  3. Provincial containment
  4. Regional containment/control
  5. Management

Prevent

Species determined to be high risk to B.C. and not yet established. Management objective is prevent the introduction and establishment.
 

https://en.wikipedia.org/wiki/Ampullariidae#/media/File:Pomacea.jpg
Apple snail
Ampullariidae​ sp.

https://www.researchgate.net/figure/Mytilopsis-leucophaeata-Netherlands-ZuidHolland-Hellevoetsluis-Kippenbrug-NMR-76237_fig4_328784424
Conrad's false mussel
Mytilopsis leucophaeata​

https://www.biolib.cz/IMG/GAL/BIG/179047.jpg
Marbled crayfish
Procambarus fallax f. virginalis​

https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=2267Ringed crayfish
Orconectes neglectus

http://www.invadingspecies.com/rusty-crayfish/#bwg43/146Rusty crayfish (PDF, 540KB)
Orconectes rusticus

https://vtinvasives.org/invasive/spiny-waterfleaSpiny waterflea
Bythotrephes longimanus

https://www.canada.ca/en/environment-climate-change/services/species-risk-public-registry/publications/wild-species-2010/chapter-21.html Virile crayfish
Faxonius virilis

Zebra & Quagga mussels
Dreissena polymorpha & bugensis

 

Early detection and rapid response (EDRR)

Provincial EDRR

Species is high risk to B.C. and is new to the Province. Management objective is eradication.

Provincial containment

Species is high risk with limited extent in B.C. but significant potential to spread. Management objective is to prevent further expansion into new areas with the ultimate goal of reducing the overall extent.

http://cceonondaga.org/resources/asian-clam-brochure
Freshwater clam (PDF, 500KB)
Corbicula fluminea

https://acuariopets.com/cherry-shrimp-size/
Cherry shrimp
Neocaridina davidi

https://commons.wikimedia.org/wiki/File:Potamopyrgus_antipodarum_2.pngNew Zealand mudsnail
Potamopyrgus antipodarum

 

 

Management

Species is more widespread but may be of concern in specific situations with certain high values - e.g., conservation lands, specific agriculture crops. Management objective is to reduce the invasive species impacts locally or regionally, where resources are available.

https://uksafari.com/bandedsnails.htm
Banded garden snail
Cepaea nemoralis

Photo courtesy of Ondrej Zicha, BioLib.cz, EOL.
Peach Blossom jellyfish
Craspedacusta sowerbii

Photo by Megan Paustian
Land slugs
Arion spp. (rufus and vulgaris)

 

Reporting sightings
Image of invasive mussel

Report invasive species before they cause harm.

Report

B.C. Aquatic Invasive Species Survey Methods (PDF, 1480KB)

Clean, Drain, Dry
Stop the spread of invasive mussels

Clean your boat, marine equipment and watercraft to prevent the introduction or spreading of invasive aquatic species, like mussels. Learn how to: