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Marine Biodiversity and Ecosystem Functioning EU Network of Excellence |
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Photo Gallery Otoliet van een pladijs van meer dan 30j oud
JPG file - 124.93 kB - 800 x 600 pixels
Extra information
added on 2012-04-122 614 viewsERMS taxa Pleuronectes platessa Linnaeus, 1758
FileName: 49561.jpg FileDateTime: 1334236665 FileSize: 124934 FileType: 2 MimeType: image/jpeg SectionsFound: ANY_TAG, IFD0, THUMBNAIL, EXIF COMPUTED.html: width="800" height="600" COMPUTED.Height: 600 COMPUTED.Width: 800 COMPUTED.IsColor: 1 COMPUTED.ByteOrderMotorola: 0 COMPUTED.Copyright: Karl Van Ginderdeuren COMPUTED.Thumbnail.FileType: 2 COMPUTED.Thumbnail.MimeType: image/jpeg ImageDescription: Een otoliet is een structuur in het binnenoor van vissen dat uit calciumcarbonaatkristallen en een gelatineuze massa bestaat. Ze staan in verbinding met groepen gecilieerde cellen (neuromast) op de slakkenhuiswand van het binnenoor. Ze spelen een rol in het mechanisch waarnemen van geluid, versnelling en zwaartekracht. Na de dood van een vis blijven deze harde structure bewaard. Deze otoliet was van een pladijs. Het interessante is dat je de leeftijd van de vis kan bepalen. Ieder jaar werd er immers een nieuw laagje matrix afgezet. Deze vis was meer dan dertig jaar oud.; Otoliths are small particles from the inner ear of fish. After the death and decomposition of a fish, otoliths may be dispersed, buried and eventually fossilized. Since the compounds in fish otoliths are resistant to digestion, they are found in the digestive tracts and scats of piscivorous marine mammals, such as dolphins, seals, sea lions and walruses. Many fish can be identified to genus and species by their sagittal otoliths. Otoliths can therefore, to some extent, be used to reconstruct the prey composition of marine mammal diets. This otolith belonged to a plaice and looking at the amount of rings (just like when counting the age of a tree) the fish was more than thirty years old when it died. Orientation: 1 XResolution: 720000/10000 YResolution: 720000/10000 ResolutionUnit: 2 Software: ACD Systems Digital Imaging DateTime: 2012:04:12 15:06:44 Artist: Karl Van Ginderdeuren YCbCrPositioning: 1 Copyright: Karl Van Ginderdeuren Exif_IFD_Pointer: 1541 SubSecTime: 305 ColorSpace: 1 ExifImageWidth: 800 ExifImageLength: 600 
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