Do Spiders Hold Their Breath When Sprayed With Insecticide?
WouterMost spiders cannot hold their breath underwater. However, there are some exceptions. The diving bell spider is one example. It builds an underwater web filled with air and comes up for air once a day.
Some arachnids, such as the tarantula, breathe underwater by using a mechanism called passive diffusion. This occurs because spiders have no muscles that actively pump air into their bodies. Instead, they rely on a substance known as hemolymph to transport oxygen and carbon dioxide.
This substance contains a copper-based compound called hemocyanin. It binds to oxygen and transports waste carbon dioxide. It also exchanges carbon dioxide with water and the atmosphere.
In addition to hemolymph, spiders have another respiratory system. The trachea is at the posterior end of the spider and branches out to form spiracles. Spiders with tracheas have two sets of tracheae.
Spiders can survive in ponds and other areas of water for minutes. They may even crawl up the shore to frighten unsuspecting sunbathers.
When insects are sprayed with insecticide, the spray is toxic to people and fish. This is why you should avoid sprayed areas. You should also make sure your pet is away from sprayed areas.
Other myths about spiders include the so-called “daddy long legs” myth. These myths are based on misinformation and have no scientific basis.
Another myth is the one about spiders holding their breath when sprayed with insecticide. This myth is based on the misconception that arachnids breathe by pumping air into their bodies.
