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    Though moth physiology is in many ways different from our own, they also share some of the same physical characteristics. A moth has a mouth and stomach that he uses to ingest food and nourish himself, a brain and nervous system, and a heart along with a circulatory system that pumps a substance that performs many of the same functions as our blood.

    Meet the Moths

    Moths are a widely varying group of insects composed of myriad types, from the giant green Luna moth (Actias luna) in the South to the small, household moths that fly into our light fixtures every day. In North Dakota alone, more than 1,400 species of moths from roughly four dozen families exist. They are winged insects that are born flightless, pass through metamorphosis and emerge as adults, which then breed a new cycle.

    Moth Blood

    Insects do not use blood as we know it; rather, they possess a substance known as hemolymph. It lacks red blood cells and therefore the red color we typically associate with blood. However, they have veins that extend throughout their bodies and into their wings, as well as a main aorta that brings hemolymph up the center of their bodies and supplies their brains, bathing other organs along the way. When moths such as the luna first hatch, they hang upside down for a day or so until hemolymph has flooded their wings, after which they can fly.

    Hemolymph and Temperature Regulation

    Moths use hemolymph to keep their internal organs healthy and moist, as well as to regulate their body temperature. Just like blood, moths circulate hemolymph faster when they are hot, so that as it passes by their body surface they can give off heat to the surrounding air. Conversely, their circulation slows when they are cold so that they can conserve heat. For this purpose, they have veins that run directly through their muscles on either side of their bodies.

    Moth Respiration

    While the hemolymph conducts important functions, it is not involved in the circulation of oxygen the way blood is for humans and other mammals. Rather, moths get oxygen through holes in the sides of their bodies called spicules, which route it directly into the trachea. The trachea then transfers oxygen to the internal tissues. Moths are able to adjust the size of spicules so that, depending on the environment, they minimize water loss to hot or arid conditions.

    References

    Photo Credits

    • Stockbyte/Stockbyte/Getty Images

    Writer Bio

    Sarah Moore has been a writer, editor and blogger since 2006. She holds a master's degree in journalism.

    What color is moth blood?
    Moth Blood It lacks red blood cells and therefore the red color we typically associate with blood. However, they have veins that extend throughout their bodies and into their wings, as well as a main aorta that brings hemolymph up the center of their bodies and supplies their brains, bathing other organs along the way. more
    What color is blood on ultrasound?
    Vessels in which blood is flowing are colored red for flow in one direction and blue for flow in the other, with a color scale that reflects the speed of the flow. Because different colors are used to designate the direction of blood flow, this Doppler technique simplifies interpretation of the ultrasound data. more
    What color is dried blood?
    reddish-brown Finding and documenting blood residue Freshly dried bloodstains are a glossy reddish-brown in color. Under the influence of sunlight, the weather or removal attempts, the color eventually disappears and the stain turns grey. The surface on which it is found may also influence the stain's color. more
    What color is menstrual blood?
    Healthy period blood typically varies from bright red to dark brown or black. Blood or discharge that is orange or grey may indicate an infection. Women who experience bleeding during pregnancy should see a doctor or obstetrician for an evaluation. more
    What color is hippo blood?
    Like magma, hippo perspiration erupts from deep within those two-inch-thick hides, and it's more viscous than ours. It's also crimson colored, which gives the animals an arresting sheen in the sunlight. Even today naive naturalists sometimes mistake it for blood. more
    What color is bees blood?
    Bees don't have "blood" the way we do - their whole body cavity is filled with a material called haemolymph, from which they get the nutrients (except oxygen) they need to survive. Haemolymph is colorless. more
    What color blood do birds have?
    red blood Vertebrates, including mammals, birds, amphibians, reptiles and fish also have red blood because they too use hemoglobin as an oxygen transport protein. more
    What color is Yoda's blood?
    Yoda's own blood is also light green, carrying on the light green color scheme that is so heavily associated with his character. more
    What color is blood inside body?
    red Human blood is red because hemoglobin, which is carried in the blood and functions to transport oxygen, is iron-rich and red in color. Octopuses and horseshoe crabs have blue blood. This is because the protein transporting oxygen in their blood, hemocyanin, is actually blue. more
    What color is blood really?
    red Blood is red to the naked eye. Under a microscope, it depends. This isn't because it isn't really red, but rather because its redness is a macroscopic feature. Human blood is red because hemoglobin, which is carried in the blood and functions to transport oxygen, is iron-rich and red in color. more
    What Color Is artery blood?
    red But our blood is red. It's bright red when the arteries carry it in its oxygen-rich state throughout the body. And it's still red, but darker now, when it rushes home to the heart through the veins. more

    Source: animals.mom.com

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