Nesting Ring-billed Gulls (Larus delawarensis) were studied on Granite Island, northern Lake Superior, during the breeding seasons of 1983 and 1984 to determine if there was a relationship between food supply and the ...

Initial investigations into bioacoustics of Cicindela spp. (Cicindelidae: Coleoptera) were designed to establish the systematic usefulness of acoustic variables, the possibility of auditory communication, and lay ...

These studies assess how changing food quality influences spruce budworm, Choristoneura fumiferana (Clem.), in terms of the performance characteristics of survival, development, growth, and fecundity. The components of ...

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 ...

I examined the forage base of Henderson Lake, Ontario following collapse of its walleye stock due to overexploitation, and an inexplicable decline of the ninespine stickleback population. In response to these events a ...

The parasite communities of fishes can provide important information on certain aspects of host biology such as where they have been, what they are eating, and what’s eating them. Unfortunately, fish parasite studies in ...

Exploitation of northern stocks of the crayfish Orconectes virilis (Hagen) produced significant alterations in several population parameters. High fishing efforts increased per capita fecundity, young-of-year (YOY) ...

The subfamily Schistorophinae Travassos, 1918 is revised. Five species of Schistorophus Railliet, 1916 are recognized: (1) longicornis (Hemprich and Ehrenberg in Schneider, 1866) with S. indica (Sanwal, 1952) and ...

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 ...

Hypertension, an increase in blood pressure, can lead to many serious complications, one of which is heart failure. Angiotensin (Ang) II is associated with hypertension; specifically, the Ang II receptor type 1 (AGTR1) is ...