hemocoel


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hemocoel

(hē′mə-sēl′)
n.
A cavity or series of spaces between the organs of most arthropods and mollusks through which the blood or hemolymph circulates.
References in periodicals archive ?
Early heart function is consistent with the necessity to circulate oxygen and nutrients throughout the developing organism, even though the parental heart is connected directly to the hemocoel of the bud and would appear to be sufficient for sustaining such circulation.
4 and 5): 1) copepods were infected by ingestion of eggs deposited in the bottom debris producing procercoid larvae (first larval stage) in the hemocoel of these hosts and 2) tadpoles ingested these infected copepods and plerocercoid larvae (second larval stage) developed in the body cavity and associated tissues of these hosts.
After passing through the gut epithelial barrier, pathogens proliferate in the hemocoel, producing bacteremia or septicemia as a result of the action of bacterial toxins and pathogenic factors; this typically results in color and tissue changes in the host.
The symbiotic bacteria are released into the insect hemocoel when the nematode enters the target insect host (Dowds and Peters, 2002).
with four denticles, the medial pair fused distally, the lateral pair outswung, radula base with two medial ribs extending from lateral denticles; ventrolateral foregut glands in lobes surrounding pharynx, form as in Dondersia; hemocoel filled by mesenchyme; seminal vesicles paired with several lobes sharing single duct; with seminal receptacles; with paired copulatory spicules; posteroventral body lobe filled by mesenchyme, no lumen or gland present; paired lower gametoducts uniting before emptying into mantle cavity; mantle cavity with numerous folds; dorsoterminal sense organ present.
Therefore, other immune mechanisms must be present to defend the cuticle from nonbacterial microbes, such as fungi, that are targets of antimicrobial peptides, which have been described in decapods (Rosa & Barracco 2010) but have been more associated with more advanced breaches into the hemocoel.
Then, legs were detached from cold-anesthetized mosquitoes and assayed to determine the dissemination rate of the virus from the midgut into the hemocoel (mosquito legs include hemolymph, which is believed to mediate infection of the salivary glands).
Susceptibility was determined through oral exposure of cockroaches to acanthocephalan eggs, and, for some species, confirmed through direct injection of hatched parasites into the hemocoel (Moore and Crompton 1993).
Its function may be related mainly to the transport of nutrients from the lumen into the hemocoel, secretion, endocytosis and exocytosis, and to increasing the resistance of the spermathecal epithelium filled with sperm (Gobin et al.
When they locate the host, penetrate into them through the body natural openings (Poinar, 1979; Burnell and Stock, 2000) or also through the cuticle in Heterorhabditidae (Bedding and Molyneux, 1982), reaching the hemocoel and releasing a symbiotic bacterium (Xenorhabdus in Steinernema and Photorhabdus in Heterorhabditis) which starts reproducing and finally kills the insect by septicaemia between 24 to 72 h.