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(invertebrate zoology)
The circulating fluid of the open circulatory systems of many invertebrates.



a fluid that circulates in the vessels and intercellular spaces of many invertebrates with an open system of blood circulation, such as arthropods and mollusks.

Hemolymph performs the same functions as blood and lymph in animals with a closed circulatory system (some worms, vertebrates). It transports oxygen and carbon dioxide, nutrients, and secretory products. It is rich in organic substances, including proteins, and frequently contains the respiratory pigments hemocyanin and hemoglobin. Hemolymph also contains cellular elements of various structure and function (phagocytes, excretory cells, and, in some cases, erythrocytes).

References in periodicals archive ?
Free amino acid levels in T dendrolimi grown in an artificial medium with hemolymph revealed an excess of some amino acids, notably serine (Grenier 1994).
Concerning the OIE notifiable parasites, analyses of hemolymph cytological preparations and histological sections strongly suggested the absence of infections by Bonamia sp.
When the fungus is finished dining on hemolymph, usually after a few days, it simply eats its way out through the insect's tissue.
From each individual, 50 mg of tissue (abdominal muscle) and 5 ql of hemolymph were removed and analyzed individually for biochemical estimations following standards methods.
Although it is becoming increasingly apparent that Unionicola mollusk mites are utilizing host mucus, gill tissue, or hemolymph for at least part of their nutrition, the effects that these mites have on a host has not yet been examined in any detail.
Amino acids are stored in hemolymph at 100-300 times the levels found in human blood, in excess of what is needed for protein synthesis (Chen 1985).
2]) by a factor of 2-4 and accounts for from 70% to more than 90% of the total protein concentration in the hemolymph of crustaceans (Truchot, 1992).
In the present work, a new maturation cycle right after the spawn was observed, confirming the study mentioning unilateral ablation as the best way of promoting gonadal maturation by endocrine imbalance relating it to the reduction of the Gonadal Inhibitor Hormone (GIH) in the hemolymph on ablated females (BROWDY; SAMOCHA, 1985).
In the present study, attempts were made to identify putative candidate antigens in the hemolymph of An.
The method's robustness provided utility for measurements in plasma, urine, cere brospinal fluid, microdialysates, homogenized tissue extracts, and insect hemolymph.
Using hemolymph as a circulatory medium, phagocytic hemocytes and humoral proteins disseminate throughout the body and elicit efficient immune responses.