Insects have successfully adapted to environmental changes due to their large numbers of species. In addition, they are small in size and have strong reproductive ability. Some have evolved wings to fly while others have evolved a hard exoskeleton of chitin that protects internal tissues and organs. Moreover, the evolution of complete metamorphosis has led to better adaptability to some environmental changes. This unit introduces special adaptations of insects to environmental changes.
Among insects of the order Lepidoptera, the larvae of some species produce silk for cocoons. Silk-secreting insects include the larvae of the domestic silkworm, Bombyx mori, and the family Saturniidae. Sericulture is the practice of raising silkworms to obtain silk. This unit introduces silk-secreting insects featured on postage stamps, the history of the silk industry, the life cycle of the silkworm, and silk processing.
The majority of insects are solitary. Once larvae have hatched, they live independently. However, among the more than one million insect species, there are some that are social, coexisting in colonies. In such colonies, there are different castes and clear division of labor, helping to maintain the colonies and to increase numbers through reproduction. Social insects include bees, ants, and termites. This unit introduces bees and other social insects found on postage stamps.
There is a very close relationship between mosquitoes and people. Mosquitoes not only feed on the blood of humans, but also transmit diseases. Malaria was once one of the major diseases transmitted by mosquitoes that severely threatened human health and survival. In this unit, we will introduce the mosquito, the transmission of malaria by mosquito and the protracted war between humans and mosquitoes.
Among more than one million species of insects, many directly feed on crops grown by humans, resulting in large economic losses. In the past, pest control made use of one or several types of measures to increase the mortality rate of insects. Not much consideration was given to the destruction of ecosystems or the impact on the environment by various pesticides. In this unit, the major pest species featured on postage stamps are introduced, as well as integrated pest management, protection of biodiversity, and harmonious coexistence of humans and insects.
Jun. 24, 2020
Feb. 21, 2021
The 3rd Exhibition Gallery
Copyright by National Museum of Natural Science.