Female waterflea
Numéro d’image : 11906974
| Light micrograph of a female fresh waterflea Daphnia sp,showing a single egg developing in the dorsal surface of the carapace. The first pair of antennae are small,obscured by the large second pair,which are branched & bear several long swimming hairs. They serve as "rowing organs" propelling the creature through the water in jerky movements. During the spring & through the summer only females are found in the water. They reproduce parthenogenetically. Later small males appear & normal reproduction follows. The resulting eggs overwinter in the female & are laid in early spring. Waterfleas feed on algae & are themselves food for others | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Walsh, John |
| Taille de l’image : | 3543 px × 2633 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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