File:BufoCalamitaTadpoles.jpg
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DescriptionBufoCalamitaTadpoles.jpg |
English: Tadpoles from the Natterjack Toad, Epidalea (Bufo) calamita, within a shallow pool in a gravel pit.
Deutsch: Nahaufnahme von Kaulquappen der Kreuzkröte, Epidalea (Bufo) calamita, in einem flachen Kiesgrubentümpel. In diesem Entwicklungsstadium sind die Larven äußerlich kaum von solchen der Erdkröte zu unterscheiden. (Zumindest, wenn sie, wie hier, nahezu völlig schwarz gefärbt sind. In manchen Populationen sehen Kreuzkrötenlarven allerdings eher grau-scheckig aus und haben einen hellen Kehlfleck. Dann sind sie eindeutiger als solche zu erkennen.) Die Zuordnung konnte hier trotzdem zweifelsfrei erfolgen aufgrund des arttypischen Habitats, des Zeitpunktes, des Verhaltens und des vorherigen Nachweises adulter, laichaktiver Kreuzkröten. Man sieht, dass die Tiere das Substrat aus Detritus über dem Sandgrund intensiv durchfiltrieren. Bei dem Gewimmel werden auch viele Schwebeteilchen aufgewirbelt. |
Date | |
Source | Own work. Location: North-eastern Lower Saxony, Germany. |
Author | Christian Fischer |
Other versions | See also |
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Attribution: Christian Fischer
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:33, 13 June 2010 | 3,008 × 2,000 (1.43 MB) | Fice (talk | contribs) | {{Information| |Description= '''''English:''''' Tadpoles from the '''Natterjack Toad''', ''Bufo calamita'', within a pool in a gravel pit. '''''Deutsch:''''' Nahaufnahme von Kaulquappen der Kreuzkröte, ''Bufo calamita'' in einem |
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Camera manufacturer | PENTAX Corporation |
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Camera model | PENTAX K100D |
Exposure time | 1/180 sec (0.0055555555555556) |
F-number | f/11 |
ISO speed rating | 800 |
Date and time of data generation | 19:15, 5 June 2010 |
Lens focal length | 300 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | K100D Ver 1.00 |
File change date and time | 19:15, 5 June 2010 |
Y and C positioning | Co-sited |
Exposure Program | Aperture priority |
Exif version | 2.21 |
Date and time of digitizing | 19:15, 5 June 2010 |
APEX exposure bias | 0 |
Metering mode | Center weighted average |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Sensing method | One-chip color area sensor |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 450 mm |
Scene capture type | Standard |
Contrast | Hard |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Close view |