Semimytilus algosus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Mytilida
Family: Mytilidae
Genus: Semimytilus
Species:
S. algosus
Binomial name
Semimytilus algosus
(Gould, 1850)
Synonyms

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]

Size

Individuals can be up to 42 mm[1] or 50 mm in size.[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 2 3 "bisexual mussel - Encyclopedia of Life". eol.org. Retrieved 2021-09-19.
  2. ↑ "Dwarf mussel". SANBI. Retrieved 2021-10-11.
  3. 1 2 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. ↑ 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. ↑ 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. ↑ 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. doi:10.2989/1814232X.2013.829789. hdl:10019.1/121931. ISSN 1814-232X. S2CID 84892353.
  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. doi:10.1371/journal.pone.0239167. ISSN 1932-6203. PMC 7485899. PMID 32915915.


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