File:Amusium japonicum (Japanese moon scallop) 1.jpg
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editDescriptionAmusium japonicum (Japanese moon scallop) 1.jpg |
English: Amusium japonicum (Gmelin, 1791) - Japanese moon scallop (public display, Bailey-Matthews Shell Museum, Sanibel Island, Florida, USA)
This species is also known as Ylistrum japonicum. Bivalves are bilaterally symmetrical molluscs having two calcareous, asymmetrical shells (valves) - they include the clams, oysters, and scallops. In most bivalves, the two shells are mirror images of each other (the major exception is the oysters). They occur in marine, estuarine, and freshwater environments. Bivalves are also known as pelecypods and lamellibranchiates. Bivalves are sessile, benthic organisms - they occur on or below substrates. Most of them are filter-feeders, using siphons to bring in water, filter the water for tiny particles of food, then expel the used water. The majority of bivalves are infaunal - they burrow into unlithified sediments. In hard substrate environments, some forms make borings, in which the bivalve lives. Some groups are hard substrate encrusters, using a mineral cement to attach to rocks, shells, or wood. The fossil record of bivalves is Cambrian to Recent. They are especially common in the post-Paleozoic fossil record. Scallops are distinctive bivalves with nearly symmetrical valves. The convexity and color of the two valves of an individual can vary dramatically in many species. The Japanese moon scallop shown above is part of the Japanese Province: "Sandwiched between the cold-waters of northern Japan and the warmer, more southerly areas of Okinawa and Taiwan is the rather isolated Japanese Province containing such endemic species as the noble scallop, Japanese wonder shell and many latiaxis snails. This temperate-water area supports about 1,500 species, including the famous Japanese pearl oyster." [info. from museum signage] Classification: Animalia, Mollusca, Bivalvia, Pteriomorphia, Pectinoida, Pectinidae Locality: unrecorded/undisclosed/unspecified |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/24382164363/ |
Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/24382164363 (archive). It was reviewed on 5 March 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
5 March 2020
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current | 18:21, 5 March 2020 | 3,360 × 1,745 (3.51 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/24382164363/ with UploadWizard |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/10 |
ISO speed rating | 80 |
Date and time of data generation | 16:45, 3 January 2016 |
Lens focal length | 9.7 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 19:10, 13 February 2016 |
Y and C positioning | Centered |
Exif version | 2.21 |
Date and time of digitizing | 16:45, 3 January 2016 |
Meaning of each component |
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APEX shutter speed | 5.9068905902692 |
APEX aperture | 6.6438561438561 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 3.614709851552 APEX (f/3.5) |
Metering mode | Pattern |
Flash | Flash fired, compulsory flash firing, red-eye reduction mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 16,460.905405405 |
Focal plane Y resolution | 16,483.516483516 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Portrait |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 12:10, 13 February 2016 |
Unique ID of original document | AAA2AF8BA15414E530A166F0C5A4BBEE |