File:Daphnia Ephippia.jpg
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DescriptionDaphnia Ephippia.jpg |
Eesti: Fotol on näha kiivrik perekonda kuuluva vesikirbu püsimuna. Püsimunad on munad mis tekkivad kui veekogus elutingimused halvenevad, nt tuleb talv. Kirbud moodustavad püsimunad ja need lastakse veekogu põhja, need võivad seal olla aastakümneid või isegi aastasadu, kui elutingimused paranevad, tõusevad munad pinnale ja nendest kooruvad uued kirbud.
English: Ephippia (singular: ephippium) are winter or dry-season eggs of the various species of small crustacean in the order Cladocera (within the Branchiopoda); they are provided with an extra shell layer, which preserves and protects the resting stages inside from harsh environmental conditions until the more favorable times, such as spring, when the reproductive cycle is able to take place once again. Ephippia are part of the back of a mother carrying them until they are fully developed. After molting, the ephippium stays in the water, or in the soil of dried puddles, small ponds, and vernal pools. The resting stages are often called eggs, but are in fact embryos with arrested development. Ephippia can rest for many years before the embryo resumes development upon an appropriate hatching stimulus. |
Date | |
Source | Own work |
Author | Janeklass |
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This file was uploaded as part of Wiki Science Competition 2023. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:07, 19 November 2023 | 5,160 × 3,434 (7.4 MB) | Janeklass (talk | contribs) | Uploaded own work with UploadWizard |
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Camera manufacturer | Canon |
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Camera model | Canon EOS 650D |
Exposure time | 3/10 sec (0.3) |
ISO speed rating | 100 |
Date and time of data generation | 19:15, 19 April 2023 |
User comments | Stacked from 71 images. Method=B (R=8,S=4) |
Width | 5,160 px |
Height | 3,434 px |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop 24.3 (Windows) |
File change date and time | 19:34, 19 April 2023 |
Exposure Program | Aperture priority |
Exif version | 2.31 |
Date and time of digitizing | 19:15, 19 April 2023 |
APEX shutter speed | 1.736966 |
APEX exposure bias | −5 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTimeOriginal subseconds | 44 |
DateTimeDigitized subseconds | 44 |
Color space | sRGB |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |
Serial number of camera | 053053054593 |
Date metadata was last modified | 22:34, 19 April 2023 |
Unique ID of original document | 4F73490A7059F0B766802141A760EFC7 |