Now showing items 21-30 of 75
Changes in serum proteins associated with metamorphosis in salamanders of the family ambystomatidae
(Elsevier, 1976)
1. 1. The effect of metamorphosis on the serum proteins of three genera and five species of ambystomatid salamanders was examined by electrophoresis.2. 2. Four of the five species showed a significant increase in the fastest ...
Development of a photosynthesis model with an emphasis on ecological applications
(Springer-Verlag, 1976-06)
Photosynthesis was measured in leaves of Phaseolus vulgaris and analyzed according to the set of equations outlined previously by Tenhunen et al. (1976).
A taxonomic revision of the lizard family Pygopodidae.
(University of Michigan Museum of Zoology, 1974)
Rectal enzymes of attine ants. [alpha]-Amylase and chitinase
(Elsevier, 1973-07)
The faecal material of seven species of attine ants from the genera Cyphomyrmex, Apterostigma, Myrmicocrypta, Sericomyrmex, and Atta has been shown to contain [alpha]-amylase and chitinase, but only a trace of uricase. ...
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 ...
On the regional stabilization of locally unstable predator-prey relationships
(Elsevier, 1973-09-14)
The stabilizing effects of interhabitat migration and local population extinction are established by an analysis of the variable Pi, where Pi refers to the proportion of habitats occupied by species i. This is followed by ...
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 ...
When are two qualitative taxonomic characters compatible?
(Springer-Verlag, 1977-06)
A proof is given of a procedure that has previously appeared claiming to determine when two amino acid positions on a protein could both possibly be divergent taxonomic characters. An algorithm for executing this procedure ...