Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-14T23:14:45.934Z Has data issue: false hasContentIssue false
  • English
  • Français

Factors Influencing the Specific Gravity of Insect Haemolymph1

Published online by Cambridge University Press:  31 May 2012

W. F. Baldwin  and
H. L. House
W. F. Baldwin
Affiliation:
Dominion Parasite Laboratory, Belleville, Ontario
H. L. House
Affiliation:
Dominion Parasite Laboratory, Belleville, Ontario
Get access Rights & Permissions [Opens in a new window]

Extract

The physiochemical properties of the blood of an animal are maintained in a close equilibrium conducive to the normal functioning of the organism. Disturbances in the physiological functian may result in characteristic changes in the blood. For example, the specific gravity of normal human blood, which averages about 1.060, may vary with age, sex, nutritive condition, and disease (Hawk, Oser. and Summerson, 1947). The reaction of blood to metabolic and pathological conditions is recognized by the medical profession as a valuable aid in diagnosis (Scudder, 1939). Changes have been shown in the specific gravity of human blood in pregnancy and cancer (Polowe, 1932; 1934). It has also been shown that haemorrhage is accompanied by a decline in the specific gravity (Richet, Brodin, and Saint-Girons, 19 18).

Type
Articles
Information
The Canadian Entomologist , Volume 84 , Issue 5 , May 1952 , pp. 131 - 139
Copyright
Copyright © Entomological Society of Canada 1952

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Abegg, R. 1947. Blood density of the bass, Huro sctlmoides. Anat. Rec. 99: 576.Google Scholar
Beard, R. L. 1949. Physiological effects of induced hemorrhage in Japanese beetle larvae. J. New York Ent. Soc. 57: 79–91.Google Scholar
Hawk, P. B., Oser, B. L., and Summerson, W. H.. 1947. Practical physiological chemistry. 12th ed.The Blakiston Co., Philadelphia, Toronto.Google Scholar
Lowry, C. H., and Hunter, T. H.. 1945. The determination of serum protein concentration with a gradient tube. J. Biol. Chem. 159: 465–474.CrossRefGoogle Scholar
Patton, R. L., Unpublished. Factors affecting the specific gravity of the blood of the larvae of G. mellonella. Cornell University, Ithaca, N.Y.Google Scholar
Patton, R. L., and Lin, Yu. Unpublished. Specific gravity of the blood of the American cockroach. Cornell University. Ithaca, N.Y.Google Scholar
Polowe, D. 1932. The specific gravity of the blood in pregnancy and in the puerperium. Ann. J. Obstet. and Gynaec. 23: 843–849.CrossRefGoogle Scholar
Polowe, D. 1934. The specific gravity of the blood in human cancer. J. Lab. and Clin. Med. 19: 983–993.Google Scholar
Rapp, Janet L. C. 1947. Insect haemolymph: a review. J. New York Ent. Soc. 55: 295–308.Google Scholar
Richet, C., Brodin, P., and Saint-Girons, Fr.. 1918. Density of blood after profuse bleeding. De la densité du sans après les grandes hemorragies. Compt. Rend. Soc. Biol. [Paris] 166: 587–593.Google Scholar
Scudder, J. 1939. Shock-blood studies as a guide to therapy. John Lippincott Co., Philadelphia.Google Scholar
Tauber, O. E., and Yeager, J. F.. 1934. On the total blood (hemolymph) cell count of the field cricket, Gryllus assimilis pennsylvanicus Burm. Iowa State College Jour. Sci. 9: 13–24.Google Scholar
Tauber, O. E., and Yeager, J. F.. 1935. On total hamolymph (blood) cell counts of insects. I. Orthoptera, Odonata, Hemiptera, and Homoptera. Ann. Ent. Soc. America 28: 229–240.CrossRefGoogle Scholar
Tauber, O. E., and Yeager, J. F.. 1936. On the total hemolymph (blood) cell counts of insects. II. Neuroptera, Coleoptera, Lepidoptera, and Hymenoptera. Ann. Ent. Soc. America 28: 112–118.CrossRefGoogle Scholar
Yeager, J., and Fay, R. W.. 1935. A micromethod for determining insect hemolymph specific gravity (Periplaneta americana Linn.). Proc. Soc. Expt. Biol. and Med. 32: 1667–1669.CrossRefGoogle Scholar