Monarch butterfly egg, SEM
Bildnummer 12377899
| Scanning electron micrograph (SEM) of Monarch butterfly egg (Danaus plexippus) on a milkweed leaf. In two to five weeks of egg-laying a female will lay about 700 eggs. Generally, eggs hatch in 4 days, but cool temperatures delay hatching up to 12 days. Newly hatched caterpillars feed on milkweed, their sole source of food. Milkweed contains a poison that is harmless to monarchs, but which sickens predators. A caterpillar eventually attaches itself to a twig, sheds and forms a chrysalis from which an adult monarch butterfly emerges. An adult lives six weeks in summer but those that migrate can live six to nine months over winter. Magnification: x10 when shortest axis printed at 25 millimetres. | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / DENNIS KUNKEL MICROSCOPY |
| Bildgröße: | 2647 px × 3301 px |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |
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