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and rest on the substrate. After eight to ten days, the larva metamorphoses into a juvenile clam, at which point it can acquire zooxanthellae and function symbiotically. The juvenile matures into a male clam after two or three years, becoming a hermaphrodite when larger (at around 15 centimetres in length). Reproduction is stimulated by the lunar cycle, the time of day, and the presence of other eggs and sperm in the water. Hermaphroditic clams release their sperm first followed later by their eggs, thereby avoiding self-fertilisation.
756:
92:
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50:
524:
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Beginning life as a tiny fertilised egg, the small giant clam hatches within 12 hours, becoming a free-swimming larva. This larva then develops into another, more developed, larva which is capable of filter-feeding. At the third larval stage, a foot develops, allowing the larva to alternately swim
477:
A sessile mollusc, the small giant clam attaches itself to rocks or dead coral and siphons water through its body, filtering it for phytoplankton, as well as extracting oxygen with its gills. However, it does not need to filter-feed as much as other clams since it obtains most of the nutrients it
438:
When open, the bright blue, green or brown mantle is exposed and obscures the edges of the shell which have prominent, distinctive furrows. The attractive colours of the small giant clam are the result of crystalline pigment cells. These are thought to protect the clam from the effects of intense
768:
Röding, P. F. (1798). Museum
Boltenianum sive Catalogus cimeliorum e tribus regnis naturæ quæ olim collegerat Joa. Fried Bolten, M. D. p. d. per XL. annos proto physicus Hamburgensis. Pars secunda continens Conchylia sive Testacea univalvia, bivalvia & multivalvia. Trapp, Hamburg. viii, 199
564:
716:
Huelsken, T., Keyse, J., Liggins, L., Penny, S., Treml, E.A., Riginos, C. (2013) A Novel
Widespread Cryptic Species and Phylogeographic Patterns within Several Giant Clam Species (Cardiidae: Tridacna) from the Indo-Pacific Ocean.
800:
Bonfitto A., Sabelli B., Tommasini S. & Herbert D. (1994). Marine molluscan taxa from
Mozambique described by G.G. Bianconi and preserved in the Zoological Museum of the University of Bologna. Annals of the Natal Museum
784:
Sowerby, G. B. II. (1884). Monograph of the genera
Tridacna and Hippopus. In G. B. Sowerby II (ed.), Thesaurus conchyliorum, or monographs of genera of shells. Vol. 5 (41-42): 179-182, pl. 485-489, 489*. London, privately
762:
Stephen D. A. Smith, Growth and population dynamics of the giant clam
Tridacna maxima (Röding) at its southern limit of distribution in coastal, subtropical eastern Australia; Molluscan Research 31(1): 37–41; ISSN
461:
The small giant clam has the widest range of all giant clam species. It is found in the oceans surrounding East Africa, India, China, Australia, Southeast Asia, the Red Sea, and the islands of the
Pacific.
779:
Reeve, L. A. (1862). Monograph of the genus
Tridacna. In: Conchologia Iconica, or, illustrations of the shells of molluscous animals, vol. 14, pl. 1-8 and unpaginated text. L. Reeve & Co., London.
806:
Poorten, J.J. ter, 2009. The
Cardiidae of the Panglao Marine Biodiversity Project 2004 and the Panglao 2005 Deep-Sea Cruise with descriptions of four new species (Bivalvia). Vita Malacologica 8: 9-96
491:
1073:
514:
568:
30:
1093:
928:
546:
Bianconi, J.J. (1869). Specimina zoologica
Mosambicana. Fasciculus XVII. Memorie della Accademia delle Scienze dell'Istituto di Bologna, sér. 2. 199–222; Pls. I-IV.
954:
682:
Ellis, S. (1998) Spawning and early larval rearing of giant clams (Bivalvia: Tridacnidae). Center for
Tropical and Subtropical Aquaculture, 130: 1–55.
790:
Sowerby, G. B. III. (1912). Notes on the shells of Tridacna, and description of a new species. Proceedings of the Malacological Society. 10(1): 29-31
902:
980:
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Bivalves have two valves on the mantle. These siphon water through the body to extract oxygen from the water using the gills and to feed on
1088:
1083:
774:
Lamarck (J.-B. M.) de. (1819). Histoire naturelle des animaux sans vertèbres. Tome 6(1): vi + 343 pp. Paris: published by the author.
465:
Found living on the surface of reefs or sand, or partly embedded in coral, the small giant clam occupies well-lit areas, due to its
1045:
658:
MolluscaBase eds. (2022). MolluscaBase. Tridacna maxima (Röding, 1798). Accessed through: World Register of Marine Species at:
396:
maintain a manageable size, with the shells of large specimens typically not exceeding 20 centimetres (7.9 in) in length.
532:
549:
Hedley, C. (1921). A revision of the Australian Tridacna. Records of the Australian Museum. 13 (4): 163–172, pls 27–34.
876:
863:
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Morton, B. & Morton, J. (1983). The sea shore ecology of Hong Kong. Hong Kong: Hong Kong University Press. 350 pp.
959:
212:
91:
734:
Wells, S.M., Pyle, R.M. and Collins, N.M. (1983) The IUCN Invertebrate Red Data Book. IUCN, Gland, Switzerland.
494:(CITES) meaning international import/export of all parts and derivatives requires CITES permits to be granted.
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196:
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Iredale, T. (1927). New molluscs from Vanikoro. Records of the Australian Museum. 16(1): 73-80, pl. 5.
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produce the color white in their mantle by clustering red, blue and green cells, while individual
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Liu, J.Y. (ed.). (2008). Checklist of marine biota of China seas. China Science Press. 1267 pp
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relationship with photosynthetic algae, which require sunlight for energy production.
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Adults develop a large shell that adheres to the substrate by its
405:
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693:"Giant clams could inspire better color displays and solar cells"
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requires from tiny photosynthetic algae known as zooxanthellae.
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https://marinespecies.org/aphia.php?p=taxdetails&id=207675
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388:, as their often striking coloration mimics that of the true
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Creative Commons Attribution-ShareAlike 3.0 Unported License
412:
is less than one-third the size of the true giant clam (
492:
Convention on International Trade in Endangered Species
823:
490:The species is protected under Appendix II of the
439:sunlight, or bundle light to enhance the algae's
8:
1074:IUCN Red List conservation dependent species
611:10.2305/IUCN.UK.1996.RLTS.T22138A9362499.en
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559:This article incorporates text from the
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7:
1094:Taxa named by Peter Friedrich Röding
453:cells are themselves multi-colored.
597:IUCN Red List of Threatened Species
563:fact-file "Maxima clam" under the
384:They are much sought after in the
14:
723:DOI: 10.1371/journal.pone.0080858
531:
522:
513:
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90:
869:Tridacna_(Chametrachea)_maxima
240:Tridacna (Chametrachea) maxima
1:
309:Tridacna maxima var. fossor
1110:
1089:Bivalves described in 1798
1084:Fauna of Western Australia
245:· alternate representation
350:junior subjective synonym
341:junior subjective synonym
332:junior subjective synonym
314:junior subjective synonym
305:junior subjective synonym
280:junior subjective synonym
271:junior subjective synonym
262:junior subjective synonym
227:
220:
202:
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87:Scientific classification
85:
68:
46:
37:
28:
23:
457:Distribution and habitat
252:G. B. Sowerby III, 1912
303:G. B. Sowerby II, 1884
236:(original combination)
55:Conservation Dependent
1007:Paleobiology Database
377:found throughout the
366:), also known as the
249:Tridacna acuticostata
636:"Appendices | CITES"
604:: e.T22138A9362499.
345:Tridacna troughtoni
300:Tridacna lanceolata
266:Tridacna detruncata
40:Conservation status
699:. January 20, 2016
586:Wells, S. (1996).
370:, is a species of
292:Tridacna imbricata
257:Tridacna compressa
16:Species of bivalve
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994:Open Tree of Life
817:Taxon identifiers
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275:Tridacna elongata
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231:Tridachnes maxima
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364:Tridacna maxima
327:Tridacna reevei
318:Tridacna mutica
284:Tridacna fossor
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336:Tridacna rudis
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486:Conservation
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234:Röding, 1798
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24:Maxima clam
18:
1020:SeaLifeBase
916:iNaturalist
849:Wikispecies
801:35:133-138.
750:media from
748:Maxima clam
617:19 November
400:Description
360:maxima clam
339:Reeve, 1862
260:Reeve, 1862
164:Tridacninae
160:Subfamily:
73:Appendix II
1068:Categories
785:published.
703:2016-01-23
645:2022-01-14
541:References
390:giant clam
763:1323-5818
640:cites.org
467:symbiotic
450:T. derasa
182:Species:
154:Cardiidae
110:Kingdom:
104:Eukaryota
1079:Tridacna
1033:Species+
934:10688729
840:Q2704793
834:Wikidata
719:PLoS ONE
567:and the
381:region.
222:Synonyms
175:Tridacna
150:Family:
144:Cardiida
134:Bivalvia
124:Mollusca
120:Phylum:
114:Animalia
100:Domain:
60:IUCN 2.3
908:4372625
498:Gallery
473:Biology
394:maximas
375:mollusc
372:bivalve
170:Genus:
140:Order:
130:Class:
75: (
58: (
1051:207675
1012:153297
999:599997
986:207675
752:ARKive
561:ARKive
445:Maxima
434:Mantle
428:byssus
410:maxima
408:. The
215:, 1798
213:Röding
1046:WoRMS
1025:83870
973:80232
960:80832
947:22138
929:IRMNG
921:50589
895:58NJ9
882:24531
422:Shell
406:algae
77:CITES
71:CITES
1038:8327
981:OBIS
955:NCBI
942:IUCN
903:GBIF
877:BOLD
619:2021
602:1996
569:GFDL
358:The
890:CoL
864:AFD
606:doi
418:).
1070::
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769:pp
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362:(
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62:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
