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Isognomon perna, Rayed tree oyster

Common name (e.g. turtle)

Genus + Species (e.g. Caretta caretta)

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Isognomon perna   (Linnaeus, 1767)

Rayed tree oyster

Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Isognomon perna  AquaMaps  Data sources: GBIF OBIS
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Image of Isognomon perna (Rayed tree oyster)
Isognomon perna

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Bivalvia | Ostreida | Isognomonidae

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

Benthic; depth range 0 - 20 m (Ref. 348).  Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Indo-West Pacific: from eastern and southern Africa, to western Polynesia; north to Japan and Hawaii, and south to New Caledonia; Society Islands, eastern Polynesia.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 7.5 cm ShL male/unsexed; (Ref. 348); common length : 4.0 cm SL male/unsexed; (Ref. 348)

Biology     Glossary (e.g. epibenthic)

Byssally attached to rocks, on reef flats or to the underside of boulders, on sand and gravel bottoms. May also occur at sub-littoral (Ref. 348) and intertidal depths on soft sediments (Ref. 87907).

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

Poutiers, J.M. 1998. (Ref. 348)

IUCN Red List Status (Ref. 130435: Version 2024-2)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless

Human uses


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Estimates based on models

Preferred temperature (Ref. 115969): 24.6 - 29.3, mean 28.4 (based on 3503 cells).
Vulnerability (Ref. 71543): Low vulnerability (10 of 100).
Price category (Ref. 80766): Unknown.

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