Hemigrapsus takanoi

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Hemigrapsus takanoi
Frontal view of male, showing the large patches of setae on the claws
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Varunidae
Genus: Hemigrapsus
Species:
H. takanoi
Binomial name
Hemigrapsus takanoi
Asakura & Watanabe, 2005[1]

Hemigrapsus takanoi, the brush-clawed shore crab or Asian shore crab, is a small crab of the family Varunidae (formerly classified as Grapsidae) that lives on rocky shores surrounding the Pacific Ocean, and which is invasive along the European coastlines. This crab is omnivorous and eats small fish, invertebrates and algae.

Description

Prior to 2005, the name Hemigrapsus penicillatus was used to cover animals that are now known to represent two distinct species.

developing into juvenile crabs, larval brush-clawed crabs spend almost one month floating in the ocean. This allows them to find food and new habitats.[3]

Distribution

Hemigrapsus takanoi is native to Japan and China, although the limits of its distribution are still unclear.[2]

Introduced distribution

Hemigrapsus takanoi has been

Pusan, and Europe. The ship was known to have passed the French coast in 1993, and it is thought that the introduction is likely to have occurred when crabs fell from the hull of the SPICA at that time.[4]

By 1997, its range in Europe extended from

Kiel Fjord in Germany, likely having arrived via the many ships that pass through the Kiel Canal (which connects the North Sea and Baltic Sea region),[7] and in 2018 it was first recorded in Denmark's South Funen Archipelago.[9]

References

  1. doi:10.1651/C-2514
    .
  2. ^
    doi:10.1651/C-2514
    .
  3. ^ Salem Sound Coastwatch. "Hemigrapsus takanoi, brush-clawed shore crab" (PDF). Guide to Marine Invaders in the Gulf of Maine. Government of Massachusetts. Retrieved November 24, 2011.
  4. ^
    S2CID 9955170
    .
  5. doi:10.1016/S0764-4469(97)84823-8
    .
  6. doi:10.3391/ai.2009.4.3.3
    .
  7. ^
    doi:10.3391/bir.2015.4.2.06
    .
  8. S2CID 16962886
    .
  9. ^ a b Ritzaus Bureau (3 August 2018). "Aggressive krabber fundet på Fyn - myndighederne beder om hjælp" (in Danish). TV2 Fyn. Retrieved 6 October 2018.
  10. ^ GB Non-native Species Secretariat (September 2015). "Hemigrapsus sanguineus (Asian shore crab)". nonnativespecies.org. Archived from the original on 27 December 2018. Retrieved 6 October 2018.

External links

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