File:Natrix tessellata - ribarica.jpg
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[edit]DescriptionNatrix tessellata - ribarica.jpg |
English: Dice snake
Српски / srpski: Ribarica je zmija srednje veličine, dužine do oko 1.4 m. Glava je sa jasno izraženim zaušnim pljuvačnim žlezdama, oči i nosnice smeštene bliže vrhu glave, zenice okrugle. Boja leđne strane tela varira od maslinasto zeleno sivkaste do potpuno crne, bez šara ili sa tamnijim četvorougaonim mrljama raspoređenim slično kockicama za igranje. Leđne krljušti su sa izraženim uzdužnim grebenom. Trbušna strana tela crno-bela kao kod belouške. Kada je uplašena ili uhvaćena, takođe oslobađa smrdljiv sekret iz analnih žlezda. Ženke su veće od mužjaka. Naseljava celu Srbiju, slično belouški sa kojom često deli stanište, ali je ribarica češće zastupljena ili čak dominantna vrsta zmije u brzim ili velikim rekama i jezerima i ne nalazimo je na velikim nadmorskim visinama. Ona je akvatičnija od belouške i duže može da izdrži pod vodom. Ako su uslovi povoljni, formira populacije koje se odlikuju velikom brojnošću. Parenje se odvija skupno, slično kao kod belouške. Ženka leže od 5 do skoro 40 izduženih kožastih jaja. Mladunci dostižu polnu zreost oko treće godine života. Ova vrsta se hrani skoro isključivo ribom. Po nekim podacima, najmanje 70% ukupnog plena ribarice čine ribe, a ostalo pretežno vodozemci.
Autor: Ana Paunović&Jelka Crnobrnja-Isailović |
Date | |
Source | Own work |
Author | Ivan Medenica |
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current | 09:08, 1 July 2016 | 3,648 × 2,736 (6.19 MB) | Medeniacus (talk | contribs) | User created page with UploadWizard |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot SX10 IS |
Exposure time | 1/250 sec (0.004) |
F-number | f/5 |
ISO speed rating | 100 |
Date and time of data generation | 11:49, 8 April 2016 |
Lens focal length | 34.616 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
File change date and time | 11:49, 8 April 2016 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 11:49, 8 April 2016 |
Meaning of each component |
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Image compression mode | 5 |
APEX shutter speed | 7.96875 |
APEX aperture | 4.65625 |
APEX exposure bias | 0 |
Maximum land aperture | 4.65625 APEX (f/5.02) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 15,136.929460581 |
Focal plane Y resolution | 15,116.022099448 |
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 | Manual white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |