Haemolymph plasma composition of the invasive snail Pomacea canaliculata (Architaenioglossa, Ampullariidae)

CUETO JUAN A.; GIRAUD BILLOUD MAXIMILIANO; VEGA ISRAEL A.; CASTRO-VAZQUEZ A.

MOLLUSCAN RESEARCH

MAGNOLIA PRESS

Año: 2011 vol. 31 p. 57 - 60

1323-5818

Haemolymph plasma constituents were studied in Pomacea canaliculata. Osmolality, pH, electrolytes, two metals, monosaccharides,total proteins, free amino acids and other nitrogen compounds were measured. Glucose, but not galactose, was detected in plasma. Cations found (in decreasing order) were sodium, calcium, potassium and magnesium. Chloride was the main inorganic anion, followed by bicarbonate and phosphate. Total plasma copper (the metal constituent of haemocyanin) was in a much higher concentration than that of total iron. Ammonia was the main nitrogen-excretory compound. Uric acid showed a lower concentration in plasma, while urea was undetectable (