File:Copepod2.jpg
Summary
| Description |
Eesti: Pildil on näha mageveelist aerjalgset (pikkus u 4 mm), kes on püütud Rakvere linnatiigist Eestis. Foto tegemisel on kasutatud kahte valguslahendust: tumevälja mikroskoopiat ja polariseeritud valgust. Pilt on jäädvustatud 3,5x suurendusega ja lõpptulemus on saavutatud fookuse virnastamise (focus stacking) tehnikat kasutades.
Aerjalgsed on oluline osa mageveeökosüsteemidest, olles toiduahelas nii primaarseteks tarbijateks kui ka toiduks suurematele organismidele. Polariseeritud valguse kasutamine võimaldab esile tuua struktuurilisi variatsioone, mis on palja silmaga nähtamatud, samas kui tumevälja tehnika aitab luua kontrastset tausta, tuues organismi selgelt esile. Märkus: Isendit ümbritsevad heledad rõngad on katteklaasi alla jäänud õhumullid, mis näivad tumevälja valgustuse tõttu metallsete või helendavatena.English: This image features a freshwater copepod (approx. 4 mm in length) collected from the town pond in Rakvere, Estonia. The photograph employs two lighting techniques: darkfield microscopy and polarized light, using a 3.5x magnification. The final image was created using focus stacking.
Copepods play a crucial role in freshwater ecosystems, serving as primary consumers and as food for larger organisms. The use of polarized light highlights structural variations otherwise invisible to the naked eye, while darkfield microscopy creates a high-contrast background, emphasizing the specimen's features. Note: The bright, ring-like objects surrounding the specimen are actually air bubbles trapped under the cover slip. Due to the darkfield lighting technique, they refract light strongly at the edges, appearing metallic. |
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| Source | Own work |
| Author | Janeklass |
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