Crab hacker barnacle (Sacculina carcini)
|Researched by||Andrew Hosie||Refereed by||Admin|
|Other common names||-||Synonyms||Sacculina gerbei Bonnier 1887|
Recorded distribution in Britain and IrelandRecorded in the Shetlands, St Andrew's Bay, Cullercoats Coast, East Anglia, Dorset and Devon, north and south Wales, Morecambe Bay, Isle of Man, the west coast of Scotland, and near Belfast in Northern Ireland.
Global distributionFound from Scandinavia South into the Mediterranean. Sacculina carcini has been introduced, along with its host Carcinus maenas, into Myanmar.
HabitatSacculina carcini is found parasitising shallow water members of the swimming crab family (Portunidae) including Carcinus maenas, Liocarcinus holstatus, Liocarcinus depurator and Necora puber.
- Externa roughly symmetrical.
- Externa oval, with medial mantle opening, almost opposite stalk.
- Found parasitising members of the swimming crabs (Portunidae), particularly Carcinus maenas.
Additional informationSacculina carcini produces long-lived cyprid larvae that survive in the plankton on their own food reserves and metamorphose into male and female larvae. Female and larger male larvae occur in the plankton throughout the year but with females predominating in summer and males in autumn and winter. Female larvae infect young crabs and develop inside the host for about 5 - 34 months before developing the externa. The externa contains ovaries that produce eggs that are fertilized by the male larvae. The parasite infects both male and female crabs, which results in thier castration, and prevents further molts. It causes the males to develop female characteristics. Host crabs may carry multiple infections of this parasite.
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Bristol Regional Environmental Records Centre, 2017. BRERC species records recorded over 15 years ago. Occurrence dataset: https://doi.org/10.15468/h1ln5p accessed via GBIF.org on 2018-09-25.
Centre for Environmental Data and Recording, 2018. Ulster Museum Marine Surveys of Northern Ireland Coastal Waters. Occurrence dataset https://www.nmni.com/CEDaR/CEDaR-Centre-for-Environmental-Data-and-Recording.aspx accessed via NBNAtlas.org on 2018-09-25.
Fife Nature Records Centre, 2018. St Andrews BioBlitz 2015. Occurrence dataset: https://doi.org/10.15468/xtrbvy accessed via GBIF.org on 2018-09-27.
Fife Nature Records Centre, 2018. St Andrews BioBlitz 2016. Occurrence dataset: https://doi.org/10.15468/146yiz accessed via GBIF.org on 2018-09-27.
NBN (National Biodiversity Network) Atlas. Available from: https://www.nbnatlas.org.
OBIS (Ocean Biodiversity Information System), 2023. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. www.iobis.org. Accessed: 2023-09-22
Yorkshire Wildlife Trust, 2018. Yorkshire Wildlife Trust Shoresearch. Occurrence dataset: https://doi.org/10.15468/1nw3ch accessed via GBIF.org on 2018-10-02.
This review can be cited as:
Last Updated: 23/12/2008