Water flea morphs,SEM

Numéro d’image : 11907019
Water flea morphs,SEM
Water flea morphs. Coloured scanning electron micrograph (SEM) of differently-shaped forms of the water flea Daphnia lumholtzi. Research at the Ludwig-Maximilians University in Germany has shown phenotypic plasticity in several water fleas; they can change their body shapes in response to chemicals (kairomones) given off by predators. The form on the right is a standard shape,whilst that on the left has developed a large helmet on its head (upper left),with an enlarged fornix (light- coloured ridge),as well as a long tail spike. These may make it more difficult for fish to catch or eat it. Magnification unknown
Licence : Droits gérés
Crédit: Science Photo Library / Laforsch, Christian
Taille de l’image : 2469 px × 2362 px
Model Release : Non requis
Property Release : Non requis
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