DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Coloured scanning electron micrograph (SEM) of Hatching egg of a mosquito (Culex spp.). A larva emerges from an opening at one end of the egg case. Culex species lay their eggs in the form of egg rafts that float in still or stagnant water. The mosquito lays the eggs one at a time sticking them together in the shape of a raft. An egg raft can contain from 100 to 400 eggs. Larvae will hatch from an opening at the tip of each egg case. The eggs go through larval and pupal stages feeding on micro-organisms (plankton) before developing into adult mosquitoes. Magnification: x20 when shortest axis printed at 25 millimetres.
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