FUNCTIONS OF CALLIPHORA VOMITORIA LARVAL HEMOCYTES IN RECOGNITION
AND ELIMINATION FROM HEMOLYMPH HUMAN ERYTHROCYTES
AND CHARCOAL PARTICLES
T.V. Kind
Biological Institute of St. Petersburg State University;
e-mail: tatiana.kind@mail.ru
Investigation of Calliphora vomitoria hemocyte defense reaction to human erythrocytes shows that erythrocytes
are recognized mainly by thrombocytoids. Adhesion to plasmatocytes and subsequent phagocytosis also
takes place, but in a less degree. Agglutination of erythrocytes by thrombocytoids is increased after feeding cessation
and remains at a high level during all the period of crop emptying. Entrapped erythrocytes not later than
after five to eight minutes show signs of destruction and disintegrate into fragments. Later structureless masses
can arise. The results of secondary injections of charcoal particles reveal that both thrombocytoidal agglutinates
and plasmatocytes can engulf additional abiotic inviders even after filling by erythrocytes. Meanwhile despite
the changing morphology of agglutinates their capability to adhere new batches of aliens remains unchanged at
enough high level. These agglutinates and plasmatocytes phagocytized the charcoal particles independently of
previous erythrocyte exposition. Injection of charcoal and erythrocytes mixture leads to appearance of agglutinates
with erythrocytes and charcoal mixed together. We guess that foreign receptors obtain wide spectrum of
affinity to all kinds of inviders.
Key words: insects, Calliphora vomitoria, immunity, hemolymph, hemocytes, phagocytosis, incapsulation, recognition
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