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Tridacna maxima   (Röding, 1798)

Elongate giant clam

Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Tridacna maxima  AquaMaps  Data sources: GBIF OBIS
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Image of Tridacna maxima (Elongate giant clam)
Tridacna maxima

Papua New Guinea country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: fairly common (chances are about 50%) | Ref: Neo, M.L., C.C.C. Wabnitz, R.D. Braley, G.A. Heslinga, C. Fauvelot, S. Van Wynsberge, S. Andrefouet, C. Waters, A.S.-H. Tan, E.D. Gomez, M.J. Costello and P.A. Todd, 2017
Importance: | Ref:
Aquaculture: never/rarely | Ref:
Regulations: no regulations | Ref:
Uses: no uses
Comments: C: Ref. 117184; M: Ref. 348; O: Ref. 7693.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/pp.html
National Fisheries Authority: http://www.spc.org.nc/coastfish/Countries/PNG/png.htm
Occurrences: Occurrences Point map
Main Ref: Poutiers, J.M., 1998
National Database:

Common names from other countries

Bénitier, ... more

Classification / Names / Names Namen | Synonyme | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS

> Cardiida () > Cardiidae (cockles)

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

Riff-verbunden; standorttreu (Ref. 348); brackwasser; tiefenbereich 0 - 35 m (Ref. 348).   Tropical; 23°C - 30°C (Ref. 102835); 28°N - 37°S, 31°E - 128°W

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Einführungen

Indo-Pacific: Egypt to Pitcairn Islands and Ogasawara, Japan to Lord Howe Island.

Length at first maturity / Size / Gewicht / Alter

Maturity: Lm ?, range 6 - 13 cm Max length : 41.7 cm SHL Männchen/unbestimmt; (Ref. 117184); common length : 25.0 cm SHL Männchen/unbestimmt; (Ref. 348)

Kurzbeschreibung Morphologie

The mantle color is highly variable, ranging from bright blue to brown.

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

Collected for food and for the shell trade. Aquaculture trials have been done in 1998 (Ref. 348). Maximum depth from Ref. 75831. Found in coral reef flats in shallow areas (Ref. 799), reef areas of lagoons (Ref. 97298) and in intertidal areas (Ref. 75831). Mixotrophic - filter feeds and photosynthesizes via its zooxanthellae (Ref. 105208). Tridacnids derive their nutrition from uptake of dissolved matter through their epidermis and from their symbiotic zooanthella Symbiodinium microadriaticum (Ref. 107098).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

Life cycle: Embryos develop into free-swimming trocophore larvae, succeeded by the bivalve veliger, resembling a miniature clam (Ref. 833).

Hauptreferenz Referenzen | Koordinator | Partner

SAUP Database. 2006. (Ref. 356)

IUCN Rote Liste Status (Ref. 130435)

  Geringe Gefährdung: Schutzabhängig (LR/cd) ; Date assessed: 01 August 1996

CITES Status (Ref. 108899)

Appendix II: International trade monitored

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Reports of ciguatera poisoning (Ref. 130160)

Nutzung durch Menschen

Fischereien: kommerziell
FAO - Aquakultur: production; | FishSource | Sea Around Us

Tools

E-book | Feldführer

Internet Quellen

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(; publication : search) | GenBank (Genom, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Gehe zu, Suchen) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 24.8 - 29.3, mean 28.4 (based on 3421 cells).
Widerstandsfähigkeit (Ref. 69278) mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (K=0.18-0.28; tm=3.8).
Prior r = 0.49, 95% CL = 0.32 - 0.73, Based on 1 data-limited stock assessment.
Verwundbarkeit (Ref. 71543): Low vulnerability (25 of 100).
Preiskategorie (Ref. 80766): Unknown.