Hemolymph

Hemolymph, or haemolymph, is a fluid, analogous to the blood in vertebrates, that circulates in the interior of the arthropod body remaining in direct contact with the animal's tissues.

Insects and some mollusks use a fluid called hemolymph instead of blood, the difference being that hemolymph is not contained in a closed circulatory system.

It contains hemocyanin, a copper-based protein that turns blue when oxygenated, instead of the iron-based hemoglobin in red blood cells found in vertebrates, giving hemolymph a blue-green color rather than the red color of vertebrate blood.

Unlike the hemoglobin in red blood cells found in vertebrates, hemocyanins are not bound to blood cells but are instead suspended directly in the hemolymph.

It is the major tissue type of the open circulatory system characteristic of arthropods (e.g. arachnids, crustaceans and insects).

Spiders and whipscorpions extend their limbs hydraulically using the pressure of their hemolymph.

In the grasshopper, the closed portion of the system consists of tubular hearts and an aorta running along the dorsal side of the insect.

Like other insects, grasshoppers have an open circulatory system and their body cavities are filled with haemolymph.

It is composed of a fluid plasma in which hemolymph cells called hemocytes are suspended.

It is found within the hemolymph.

The hemolymph of lower arthropods, including most insects, is not used for oxygen transport because these animals respirate through other means, such as tracheas, but it does contain nutrients such as proteins and sugars.

The respiratory system of insects (and many other arthropods) is separate from the circulatory system.

It is the major tissue type of the open circulatory system characteristic of arthropods (e.g. arachnids, crustaceans and insects). The hemolymph of lower arthropods, including most insects, is not used for oxygen transport because these animals respirate through other means, such as tracheas, but it does contain nutrients such as proteins and sugars.

The dorsal blood vessel circulates the hemolymph, arthropods' fluid analog of blood, from the rear of the body cavity forward.

It is the major tissue type of the open circulatory system characteristic of arthropods (e.g. arachnids, crustaceans and insects).

In arthropods, the open circulatory system is a system in which a fluid in a cavity called the hemocoel bathes the organs directly with oxygen and nutrients and there is no distinction between blood and interstitial fluid; this combined fluid is called hemolymph or haemolymph.

Such nucleating agents have been found in the hemolymph of insects of several orders, i.e., Coleoptera (beetles), Diptera (flies), and Hymenoptera.

Like other insects, beetles have open circulatory systems, based on hemolymph rather than blood.

Muscular movements by the animal during locomotion can facilitate hemolymph movement, but diverting flow from one area to another is limited.

Spiders and whipscorpions extend their limbs hydraulically using the pressure of their hemolymph.

It is the major tissue type of the open circulatory system characteristic of arthropods (e.g. arachnids, crustaceans and insects).

Arthropods' primary internal cavity is a haemocoel, which accommodates their internal organs, and through which their haemolymph – analogue of blood – circulates; they have open circulatory systems.

Queens of the ant genus Leptanilla are fed with hemolymph produced by the larvae.

Like other genera in this subfamily, the queen is fed by the hemolymph of their own larvae, which have specialized processes for this purpose.

When the heart relaxes, blood is drawn back toward the heart through open-ended pores called ostia.

Instead of blood the circulatory fluid is haemolymph which carries the most commonly used respiratory pigment, copper-based haemocyanin as the oxygen transporter; iron-based haemoglobin is used by only a few arthropods.

Since oxygen is delivered directly, the circulatory system is not used to carry oxygen, and is therefore greatly reduced; it has no closed vessels (i.e., no veins or arteries), consisting of little more than a single, perforated dorsal tube which pulses peristaltically, and in doing so helps circulate the hemolymph inside the body cavity.

On the other hand, Pemphigus spyrothecae utilize hemolymph as an adhesive, allowing the species to stick to predators and subsequently attack the predator; it was found that with larger predators, more aphids were stuck after the predator was defeated.

While attacking a predator, haemolymph oozed out and caused the aphids to stick to predator.

Hemolymph, or haemolymph, is a fluid, analogous to the blood in vertebrates, that circulates in the interior of the arthropod body remaining in direct contact with the animal's tissues.

It is the major tissue type of the open circulatory system characteristic of arthropods (e.g. arachnids, crustaceans and insects).

In addition, some non-arthropods such as molluscs possess a hemolymphatic circulatory system.

It contains hemocyanin, a copper-based protein that turns blue when oxygenated, instead of the iron-based hemoglobin in red blood cells found in vertebrates, giving hemolymph a blue-green color rather than the red color of vertebrate blood.

It contains hemocyanin, a copper-based protein that turns blue when oxygenated, instead of the iron-based hemoglobin in red blood cells found in vertebrates, giving hemolymph a blue-green color rather than the red color of vertebrate blood.

It contains hemocyanin, a copper-based protein that turns blue when oxygenated, instead of the iron-based hemoglobin in red blood cells found in vertebrates, giving hemolymph a blue-green color rather than the red color of vertebrate blood.

It contains hemocyanin, a copper-based protein that turns blue when oxygenated, instead of the iron-based hemoglobin in red blood cells found in vertebrates, giving hemolymph a blue-green color rather than the red color of vertebrate blood.

Note that the term "ostia" is not specific to insect circulation; it literally means "doors" or "openings", and must be understood in context.

Such nucleating agents have been found in the hemolymph of insects of several orders, i.e., Coleoptera (beetles), Diptera (flies), and Hymenoptera.

Such nucleating agents have been found in the hemolymph of insects of several orders, i.e., Coleoptera (beetles), Diptera (flies), and Hymenoptera.