Thirty nine species and subspecies of ants were collected from the Thunder Bay District of Ontario, Canada, in the summer of 1970. Extensions of known range were recorded for Leptothorax poss. texanus, Camponotus ...

This study takes place in an endangered peatland within the city of Thunder Bay Ontario. The study area, William Bog, is one of a few remaining peatlands in the Thunder Bay district which have developed on abandoned Minong ...

Breeding communities of flagflsh {Jordanella floridae) were exposed to adjusted pH levels of 6.0, 5.5, 5.0, 4.5 and 4.0 for 21 days. Control water (pH 7.5) received no acid treatment. Egg production was significantly ...

Site collection areas : Shabaqua 65 km. northwest of Thunder Bay and Gilbride Road near One Island Lake 32 km. northwest of Thunder Bay.

It has been determined that carpet-forming mosses are good indicators of heavy metal deposition, since they are dependent on their supply of nutrients from above rather than from the substrate. Samples of the common ...

Most studies of the walleye have been conducted on highly exploited populations. Savanne Lake in northwestern Ontario, and having an area of 364.29 ha, was exploited until 1969, whereupon it was designated a fish ...

Larvae of Ithycerus are described for the first time. Ten instars are identified with the possibility of more to be found. The pupa remains unknown. Spiracular air tubes and orifices show allometric growth and this, ...

Brook trout were continuously exposed to depressed pH values from 4.0 to 6.0, at 0.5 unit Intervals during a nine-month partial-chronic bloassay. At all pH levels above 4.0, Juvenile fish exhibited greater than 96 per ...

The life cycle and larval development of swim bladder nematodes, Cystidicola spp., have been elucidated. C, farionis developed in three species of amphipod. Naturally infected amphipods have been found previously but one ...