Note on Specific Gravity of Haemolymph ofMelanoplus bivittatus(Say) andMelanoplus mexicanus(Sauss.) (Orthoptera: Locustidae)
- 1 August 1958
- journal article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 90 (8) , 463
- https://doi.org/10.4039/ent90463-8
Abstract
It was necessary to know the specific gravity of the haemolymph, or blood, of grasshoppers for certain investigations on insect immunity, This information is not given in reviews on the physical properties of insect haemolymph (Rapp, 1947; Buck, 1953). Determinations of specific gravity were made by the technique developed by Lowry and Hunter (1945) and used on insects by Baldwin and House (1352). Nine males and 11 females ofMelanoplus bivittatus(Say) and 11 males and nine females ofMelanoplus mexicanus(Sauss.) were used after they had fed in the laboratory for three days on lettuce and dry dietary components. The mean specific gravity and the standard deviation forM. bivittatuswas 1.0271 ± .0043, 1.0262 ± .0046, for the male and 1.0281 ± .0039 for the female; forM. mexicanus, 1.0261 ± .0023, 1.0257 ±.0021, and 1.0264 ± .0025, respectively.Keywords
This publication has 3 references indexed in Scilit:
- Factors Influencing the Specific Gravity of Insect HaemolymphThe Canadian Entomologist, 1952
- THE DETERMINATION OF SERUM PROTEIN CONCENTRATION WITH A GRADIENT TUBEPublished by Elsevier ,1945
- Micromethod for Determining Insect Hemolymph Specific Gravity (Periplaneta americana Linn).Experimental Biology and Medicine, 1935