Now showing items 1-9 of 9
The presence of protease activity in the rectal fluid of primitive attine ants
(Elsevier, 1971-10)
The excretion of proteolytic enzymes by representative species of the attine genera Atta, Acromyrmex, Sericomyrmex, Trachymyrmex, Myrmicocrypta, Apterostigma, and Cyphomyrmex has been established. The significance of ...
Non-visual functions of crustacean eyestalk ganglia
(Springer-Verlag, 1971-03)
Ablation experiments demonstrated that in several crustacean groups, the proximal eyestalk ganglia are important in a variety of behavior patterns: 1. Chemical elicitation of feeding via the antennules is altered in lobsters, ...
Chemical and chemotactic stimulation of feeding behavior in the hermit crab Petrochirus diogenes
(Elsevier, 1971-08-01)
Various concentrations of fish juice were introduced to appendages of freely moving specimens of Petrochirus diogenes. 1. 1. The threshold concentration for chemical elicitation of feeding behavior was over ten times as ...
Intersyngenic variations in the esterases of bacterized Paramecium aurelia
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1971-04)
The esterase isozymes were surveyed in bacterized stocks representative of all 14 syngens of Paramecium aurelia by starch gel electrophoresis. The properties of substrate specificity and independent variation of particular ...
Intersyngenic variations in the esterases of axenic stocks of Paramecium aurelia
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1971-04)
The esterase isozymes were surveyed in axenic stocks of syngens 1, 2, 4, 5, 6, and 8 of Paramecium aurelia by starch gel electrophoresis. In paramecia there appear to be four types of esterases which are clearer in axenic ...
Intersyngenic variations in the esterases and acid phosphatases of Tetrahymena pyriformis
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1971-04)
The esterase and acid phosphatase isozymes were surveyed in strains of syngens 2–12 under conditions found to be optimal for syngen 1. Both intersyngenic and intrasyngenic variations were found. Comparisons of the esterases ...
A model describing photosynthesis in terms of gas diffusion and enzyme kinetics
(Springer-Verlag, 1971-09)
A model predicting net photosynthesis of individual plant leaves for a variety of environmental conditions has been developed. It is based on an electrical analogue describing gas diffusion from the free atmosphere to the ...
Some information theoretic optimality criteria for general classification
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1971-06)