Semimytilus_algosus

<i>Semimytilus algosus</i>

Semimytilus algosus

Species of mussel

Semimytilus algosus is a species of mussels. A common name for this species is Bisexual mussel,[1] or Dwarf mussel.[2] It is the first species where trioecy was reported in the phylum Mollusca.[3]

Quick Facts Semimytilus algosus, Scientific classification ...

Size

Individuals can be up to 42 or 50 millimetres (1.7 or 2.0 in) in size.[1][4]

Reproduction

The species reproduces sexually.[1] In the past this species was described as simultaneous hermaphroditic but it was later confirmed the species is trioecious. It is believed this species evolved from a gonochoric ancestor.[3]

Occurrence

Its habitat is rocky shores.[5] The species has been found off the coasts of South Africa and is native to Chile.[6] The species is also invasive off the coast of Angola and Namibia.[7]

References

  1. [1]
    "bisexual mussel - Encyclopedia of Life". eol.org. Retrieved 2021-09-19.
  2. [2]
    "Dwarf mussel". SANBI. 20 May 2018. Retrieved 2021-10-11.
  3. [3]
    Oyarzún, Pablo A.; Nuñez, José J.; Toro, Jorge E.; Gardner, Jonathan P. A. (2020). "Trioecy in the Marine Mussel Semimytilus algosus (Mollusca, Bivalvia): Stable Sex Ratios Across 22 Degrees of a Latitudinal Gradient". Frontiers in Marine Science. 7. doi:10.3389/fmars.2020.00348. ISSN 2296-7745.
  4. [4]
    Branch, George (2017-03-10). Two Oceans: A guide to the marine life of southern Africa. Penguin Random House South Africa. pp. 60–36. ISBN 978-1-77584-278-1.
  5. [5]
    Picker, Mike (2013-10-24). Alien and Invasive Animals: A South African Perspective. Penguin Random House South Africa. ISBN 978-1-77584-130-2.
  6. [6]
    Greef, K. de; Griffiths, C. L.; Zeeman, Z. (2013-09-01). "Deja vu? A second mytilid mussel, Semimytilus algosus, invades South Africa's west coast". African Journal of Marine Science. 35 (3): 307–313. Bibcode:2013AfJMS..35..307D. doi:10.2989/1814232X.2013.829789. hdl:10019.1/121931. ISSN 1814-232X. S2CID 84892353.
  7. [7]
    Ma, Kevin C. K.; Zardi, Gerardo I.; McQuaid, Christopher D.; Nicastro, Katy R. (2020-09-11). "Historical and contemporary range expansion of an invasive mussel, Semimytlius algosus, in Angola and Namibia despite data scarcity in an infrequently surveyed region". PLOS ONE. 15 (9): e0239167. Bibcode:2020PLoSO..1539167M. doi:10.1371/journal.pone.0239167. ISSN 1932-6203. PMC 7485899. PMID 32915915.
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