Jan 1, 1975

Intraspecific variations in the hemolymph of Biomphalaria glabrata, a snail host of Schistosoma mansoni

Malacologia
E H Michelson, L DuBois

Abstract

An attempt was made to characterize the hemolymph of Biomphalaria glabrata with reference to "normal" intra-specific variation, i.e., both inter- and intra-strain differences. Total protein concentration, per cent hemoglobin, pH, and osmolarity were studied. Seven geographic strains of B, glabrata were examined. In addition, observations were made on the hemolymph of Biomphalaria straminea, several strains of Helisoma caribaeum, and on B. glabrata subjected to infection with Schistosoma mansoni or to periods of starvation. Intra-strain differences in total protein concentration and total hemoglobin concentration in B. glabrata appeared to be more closely related with snail size than with absolute age. Inter-strain variation in B. glabrata was also noted, but the differences were of the same magnitude as those from intra-strain samples. Significant differences in total protein concentration were observed, however, between the means of similar size B. glabrata, B. straminea and H. caribaeum. The osmolatity of the hemolymph from different size B. glabrata was similar as were the osmolalities of the hemolymph from similar size snails of different strains. However, all B. glabrata strains exhibited hemolymph osmolalities lower than ...Continue Reading

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Mentioned in this Paper

Planorbella
Burmeistera glabrata
Osmolarity Measurement
Hemolymph
Helix (Snails)
Buchnera glabrata
Schistosoma mansoni antigen
Neonatal Torulopsis Glabrata Fungemia
Hemoglobin Measurement
Eryhem

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