New and highly refined physiological techniques have largely replaced the descriptive methods of classical cytology originally used in the investigation of host-parasite relations (Shaw and Samborski, 1956; Samborski and ...

The bigmouth buffalofish, Ictiobus cyprinellus (Valenciennes) is the only buffalofish occurring in Saskatchewan. The species supports at present a small and erratic commercial fishery in this province, but has been an ...

The discovery of a field of oats in North Eastern Saskatchewan showing grey speck, the typical symptom of manganese deficiency, prompted an investigation to determine whether other areas in Northern Saskatchewan were ...

The supply and circulation of nutrients to the lake biota are important factors governing lake productivity. Any study to determine the fish producing capacity of a lake must concern itself with the transfer of organic ...

Atrichopogon is a large genus in the subfamily Forcipomyinae of the family Heleidae (= Ceratopogonidae). Systematists have experienced difficulty in identifying species and in splitting the genus into manageable subgenera ...

The following work describes some phases of the embryonic development of the Rocky Mountain spotted fever tick, Dermacentor andersoni (Stiles), from the time of oviposition until the embryonic development is completed and ...

Rhizoctonia solani Kühn is one or the most widely distributed of all pathogenic soil fungi. Its ability to live as a saprophyte in the soil has been shown by Blair (3), and by Roth and Riker (25), and the extremely wide ...