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Pectinidae - - Classification -
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Amusium japonicum (Gmelin, 1791)
Saucer scallop| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Amusium japonicum AquaMaps Data sources: GBIF OBIS |
Classification / Names आम नाम | उपशब्द | CoL | ITIS | WoRMS
Bivalvia | Pectinida | Pectinidae
Environment: milieu / climate zone / गहराई सीमा / distribution range पारिस्थितिकी
; गहराई सीमा 0 - 80 m (संदर्भ 348), usually 0 - 30 m (संदर्भ 348). Tropical
Distribution देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | भूमिका
Indo-West Pacific.
Length at first maturity / आकार / Weight / Age
परिपक्व अवधि: Lm ? range ? - ? cm Max length : 14.0 cm ShL पुल्लिंग / अलिंग; (संदर्भ 348); common length : 11.0 cm SL पुल्लिंग / अलिंग; (संदर्भ 348)
Short description आकृति विज्ञान
Shell thin, medium to large sized (commonly exceeding to 10 cm in length), laterally compressed, almost circular in outline, gaping anteriorly and posteriorly. Both valves somewhat convex, the right (lower) valve only a little more inflated and larger than the left (upper) valve. Ears small, subequal in size and shape, with the right anterior ear faintly sinuated at anteroventral margin and devoid of ctenolium. Surface of left valve with 2 broad and very shallow depressed areas radiating from the umbo to anteroventral and radial lines. Interior of both valves with distinct radial ribs, usually in pairs, much narrower than the flat interspaces and becoming obsolete on umbonal area. Right valve with 42 to 54 internal radial ribs (46 to 54 in the typical subspecies A. japonicum, and 42 to 48 in the southern A. japonicum balloti). Colour: outside of left valve reddish brown, with variable shades along the concentric growth marks; outer colour pattern of subspecies balloti also with small, yellowish and dark brown spots along radial lines on umbonal area and often with a few irregular, larger dark spots towards periphery. Interior of left valve glossy to pale yellow externally and internally; subspecies balloti with an additional external brown scattering along some concentric growth marks.
On sandy to muddy bottoms of lagoons, often associated with brown seaweeds. Sublittoral mainly from shallow waters to about 30 m, but also deeper to more than 80 m. Can actively swim by clapping the valves when disturbed, with a speed of about 2 knots and for a distance of some 10 m (Ref. 348).
Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | Eggs | Fecundity | Larvae
Sexes separate. Spawning occurs in the cool season, from June to November. Growth is relatively rapid (about 7 to 8 cm in the first year), but the number of individuals reaching a 3 or 4 years age is small, because of a high rate of natural mortality.
Main reference
संदर्भ | संयोजक | सहयोगीयो
Poutiers, J.M. 1998. (संदर्भ 348)
IUCN Red List Status
(संदर्भ 130435: Version 2024-2)
CITES status (संदर्भ 108899)
Not Evaluated
CMS (संदर्भ 116361)
Not Evaluated
Threat to humans
Harmless
Human uses
मात्स्यिकी: व्यापारिक
| FishSource |
साधन
अधिक जानकारी
Trophic Ecology
Food items (preys)
संघटक आहार
आहार खपत
परभक्षी
संघटक आहार
आहार खपत
परभक्षी
पारिस्थितिकी
Population dynamics
बाढ़
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
बहुतायत
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
बहुतायत
Life cycle
Distribution
Physiology
Oxygen consumption
इंटरनेट स्रोत
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, खोज) | Zoological Record
Estimates based on models
Preferred temperature
(Ref. 115969): 18.7 - 29, mean 27.6 (based on 1304 cells).