Now showing items 1-6 of 6
The status of Agardhiella tenera and Agardhiella baileyi (Rhodophyta, Gigartinales)
(Kluwer Academic Publishers; Dr. W. Junk B.V. Publishers ; Springer Science+Business Media, 1973-10)
Evidence is presented to support the placement of Agardhiella tenera in Solieria (as S. tenera comb. nov.) for the reason that a large fusion cell is present in the center of the cystocarp. Since A. tenera is the type ...
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. ...
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 ...
Roles of metabolic level and temperature regulation in the adjustment of Western plumed pigeons (Lophophaps ferruginea) to desert conditions
(Elsevier, 1973-02-01)
1. 1. Standard metabolic rate of western plumed pigeons (Lophophaps ferruginea) averages 0[middle dot]88 ml O2 (g hr)-1 during summer. This rate and the rate of evaporative water loss by these birds at 25[deg]C are well ...
Silicification of developing internodes in the perennial scouring rush (Equisetum hyemale var. affine)
(Elsevier, 1973-03)
An electron microprobe (EMP) analysis of silica (SiO2) deposition in the epidermis of developing internodes of the perennial scouring rush (Equisetum hyemale var. affine) indicates that SiO2 is first detected in the stomatal ...
The development of isolated blastomeres in Bithynia tentaculata (prosobranchia, gastropoda)
(Wiley Subscription Services, Inc., A Wiley Company, 1973-10)
The development of isolated blastomeres, separated at the first and second cleavage has been studied. After separation at the first cleavage, one half-embryo (CD) becomes swollen and balloon-like and develops adult organs ...