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Septifer bilocularis   (Linnaeus, 1758)

box mussel

Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Septifer bilocularis   AquaMaps   Data sources: GBIF OBIS
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Image of Septifer bilocularis (box mussel)
Picture by Batoy, Corazon B.

Classification
Bivalvia | Mytiloida | Mytilidae
Common names | Synonyms | CoL | ITIS | WoRMS

Main reference
Poutiers, J.M. 1998. (Ref. 348)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age
Max length : 5.0 cm SL male/unsexed; (Ref. 348); common length : 4.0 cm SL male/unsexed; (Ref. 348)

Environment
Benthic; depth range 0 - 15 m (Ref. 348)

Climate / Range
Tropical

Distribution
Indo-Pacific: from East and South Africa, to Japan, Australia, New Caledonia and eastern Polynesia.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description
Shell thick, elongate, variable in shape, roughly trigonal-ovate or trapezoidal in outline, markedly swollen and pointed anteriorly, rounded and somewhat compressed posteriorly. Umbones terminal, prominent, sharply tapering and ventrally recurved. Anterior margin reduced. Ventral margin long and usually broadly concave. Posterodorsal area somewhat expanded and laterally compressed. Outer surface of valves covered with numerous, densely set radial riblets slightly diverging on posterodorsal and posteroventral areas. Periostracum strong, tightly applied to shell. Hinge with a few small denticles under the umbo of each valve. A strong shelly ledge above the umbonal cavity, supporting the anterior adductor scar and expanded dorsally as a low ridge along the ligament. Internal margins finely crenulated throughout. Colour: exterior of shell deep green, becoming brownish and paler towards the umbones. Interior bluish grey to purplish brown, white on the umbonal area.

Biology     Glossary (e.g. epibenthic)

Frequently found in areas exposed to washing of surf with strong water current (Ref. 80041). Attached to rocks, dead corals or the underside of stones, sometimes occurring in dense colonies. Littoral and sublittoral to a depth of about 15 m (Ref. 348). Living among the alga Corallina officinalis in rock-pools between tide-marks (Ref. 88739). Members of the class Bivalvia are mostly gonochoric, some are protandric hermaphrodites. Life cycle: Embryos develop into free-swimming trocophore larvae, succeeded by the bivalve veliger, resembling a miniature clam (Ref. 833).

IUCN Red List Status (Ref. 114614)

   

CITES status (Ref. 94142)

Not Evaluated

Threat to humans




Human uses

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More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance
References
Mass conversion

Internet sources
BHL | BOLD Systems | Check for other websites | Check FishWatcher | CISTI | DiscoverLife | FAO(Publication : search) | GenBank (genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | ispecies | National databases | PubMed | Scirus | FishBase | Tree of Life | uBio | uBio RSS | Wikipedia (Go, Search) | Zoological Record

Estimation of some characteristics with mathematical models

Vulnerability (Ref. 71543)
Low vulnerability (10 of 100)
Price category (Ref. 80766)
Medium