Circomphalus disjectus, Tasmania venus clam

Circomphalus disjectus   (Perry, 1811)

Tasmania venus clam
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Bivalvia | Venerida | Veneridae

Environment: milieu / climate zone / depth range / distribution range Ecology

Benthic.  Temperate

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Endemic to southern Australia and Tasmania.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cmCommon length : 5.1 cm SHL male/unsexed; (Ref. 360)

Short description Morphology

Shell: delicate, moderately swollen, equivalve and inequilateral, yellowish-whitish in color; sculpture has thin pink concentric lamellae, well-spaced, curve, grooved on the outer surface, prolonged posteriorly to form a spoutlike process; in between lamellae are thin growth lines; very longe ligament deeply set in the dorsal margin runs from the umbones to the end of the hinge which is heterodont with only three cardinal teeth on each valve; muscle scars almost equal (dimyarian, isomyarian); Pallial line has a shallow sinus (sinopalliate). Body: pair of gills each has two series of lamellae extensively fused in interlamellar junctions (eulamellabranch); foot and siphon moderately developed.

Biology     Glossary (e.g. epibenthic)

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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.

Main reference References | Coordinator | Collaborators

Sabelli, B. and H.S. Feinberg (eds.) 1879 Simon and Schuster's Guide to Shells. Simon and Schuster's Inc. New York. 512 pp. (Ref. 360)

IUCN Red List Status (Ref. 130435: Version 2025-1)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless

Human uses


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Trophic Ecology
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Predators
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Ecology
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
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Abundance
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Maturity
Fecundity
Spawning
Eggs
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Larvae
Distribution
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Introductions
Physiology
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Human Related
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References
References

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

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