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Insecticides are nerve agents that enter the spiracles and cause different molecular effects depending on where they act, summarily, killing the insect. See Klaassen and Watkin's Chapter 22. Casarett and Doull's Essentials of Toxicology. Usually the insecticide acts on enzymes such as acetylcholinesterase or on ion channels such as sodium channels
What else can I help you with?
What is spiracles?
Spiracles are holes that are sometimes found in an animalâ??s trachea, to help them breathe. They are found on stingrays and some insects.
Do insecticides kill humans?
Some insecticides are just as toxic to humans as they are to insects. Typically, it just takes a larger exposure to affect a human. However, some insecticides can be toxic even in small quantities. Insecticides such as malathion or diazinon would be harmful to humans in much smaller quantities than insecticides derived from soaps or orange peels.
How insecticides help us?
insecticides help farmers to eliminate harmful insects. Most are poisonous but some are concentrated in the food chain.
What are some animals that breathe using spiracles?
Some vertebrates eg. sharks and stingrays and some arthropods eg. the indian moon moth and the cricket.
What is the definition of spiracles?
Spiracles are small openings found on the sides of the body of insects and some other arthropods that are used for breathing. They allow for the exchange of gases, such as oxygen and carbon dioxide, between the organism and its environment.
Humans have inadvertently promoted the evolution of insects that are resistant to insecticides by?
Insects became resistant because the insecticides were used on the continuously. Most insects will die at first, but there will be some that have the right genetics to resist that insecticide. When that happens the insect will the favorable gene reproduces and creates more insects that are resistant. Humans promoted this evolution by using the same insecticide on the insects.
What animal breathes through its feet?
Some insects, like certain species of beetles, use a specialized structure called spiracles on their feet to breathe. These spiracles allow for gas exchange, helping the insect regulate its respiration.
How can insects reduce water loss?
Spiracles form a part of the abdomen region of the grasshopper. They consist of tiny holes that permit air to enter trachea. Spiracles lie along the sides of the abdomen and the thorax. Tubes stem out from the spiracles and carry air to all parts of the body for respiration. The trachea is the respiratory surface of the grasshopper. Since water travels easily along this surface, it is prone to water loss. The respiratory surface is protected thanks to spiracles. Grasshoppers have two thoracic and eight abdominal spiracles. These insects have valves that allow them to close their spiracles, thus reducing water loss. Spiracles are known to possess intricate opening and closing mechanisms that are physiologically helpful to regulate air flow and lessen water loss from the insect
Do arthropods have spiracles?
The larvae form of amphibians live in water and have gills. When they grow into their adult form they develop lungs. There are three orders of amphibians, Urodela, Anura and Apoda. Some Urodela (e.g Axolotls) retain their gills as adults, other orders do not.
Do crayfish have spiracles?
No. The aquatic kind of spiracle (such as you'd find on rays and skates) could be located only on cartilaginous fish, or the most primitive of the bony fish. The loosest definition of spiracles seems to include a respiratory opening such as the blowhole in whales; lobsters do have ventral openings to the gills but these are anatomically dissimilar to those. (Also since lobsters are aquatic, they do not possess spiracles of the type you'd find on insects.)
What are some different ways that are unintended consequences of insecticides?
poison waterways which can result in unwanted impacts on marine and freshwater creatures and to kill beneficial insects.
Does surrounding color affect an insects eating habits?
only some insects are affected by the change of color
