The effect of large scale exploitation of walleye Stizostedion vitreum vitreum on the boreal percid community of Henderson Lake, northwestern Ontario, was studied from 1979 to 1981. Investigations centered on the two major ...

A pulse fishing scheme, applied over a three year period (1980 to 1982), deliberately removed 3226 walleye from Henderson Lake, Ontario, causing the stock to collapse. The objective of the removal was not only to seek ...

Yellow perch (Perca flavescens) in Henderson Lake exhibit stunted growth and poor condition at all ages. In addition, they have lower fecundity, longer life span, slower maturation rate, and greater survival compared ...

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 ...

Female-female pairs of Ring-billed Gulls were studied on Granite Island, northern Lake Superior, during the breeding seasons of 1979 and 1980. In 1979 the colony consisted of approximately 2400 pairs with 99 nests (4.1%) ...

A behavioral bioassay method was developed to examine the effects of ethanol on the reproductive success and behavior of flagfish (Jordanella floridae). Reproductive behavior was divided into eight categories; egg ...

Observations of copulating pairs of conspecific and interspecific individuals of Cicindela splendida Hentz and Cicindela limbalis Klug revealed behaviour similar to that previously described for Pseudoxych.ila tarsalis ...

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, ...

Insulin resistance is the principle step towards the progression of type 2 diabetes, and has been linked to increased circulating levels of cytokines, leading to chronic low-grade inflammation. Specifically, in chronic ...