Overwintering as Nymphs. Not many insects are active in the winter, but the nymphs of dragonflies, mayflies and stoneflies live in waters of ponds and streams, often beneath ice. The protection of heavy covers of leaf litter or similar shelters protect the woolly bear caterpillar, while other insects replace the water in their bodies with glycerol, a type of antifreeze! Some grubs simply burrow deeper into the soil to escape the cold. Overwintering as Larvae. Many insects successfully pass the winter as immature larvae. Crop pests are the most obvious of these migrants. The Monarch Butterfly is the foremost example of this maneuver, but other insects migrate into northern areas from the southern states in the Spring. Migration is one strategy for escaping the killing temperatures. Insects have a variety of methods for surviving the coldness of winter. Eliot Elisofon Photographic Archives, African Art.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |