Studies were conducted within a 12-mile radius of Camp Sherman, Oregon, in the Deschutes National Forest during the spring and summer of 1965 and the spring of 1966, with one follow-up visit in the summer of 1967. The feeding and foraging activities of Eutamias amoenus and Citellus lateralis were observed,...
The Mount Jefferson Primitive Area is one of three High Cascade wilderness areas in Oregon. It is second in size among these, covers approximately 136 square miles, and with the addition of a large roadless area in Warm Springs Indian Reservation represents the only one of these areas in Oregon...
Ultrastructural analysis and chemical inhibition studies were
carried out on first cleavage of Mytilus zygotes to determine possible
relationships between the mitotic apparatus and the cortex during
polar lobe formation.
The stages of mitosis correlated with the appearance of the
polar lobe were first determined by light microscopy. The polar...
The syllid polychaete Autolytus varius reproduces in the spring
and early summer in Yaquina Bay, Oregon, The fertilized female
epitokes, or Sacconereis, carry the developing eggs and larvae in a
ventral sac until the larvae are ready to be released; incubation
lasts 14 to 18 days in the laboratory, The...
The integumental histology of Taricha granulosa (Skilton) has
been investigated with special attention being given to the seasonal
variations associated with terrestrial and aquatic habitats.
The epidermis consists of a stratified squamous epithelium,
four to seven cell layers thick, with one to two layers being cornified.
The dermis is composed...
The anemone Anthopleura xanthogrammica varies in color from
bright green to muddy brown. However, individuals found in caves
are white. White specimens of Anthopleura xanthogrammica collected
from dark caves along the Oregon coast were subjected to various
experiments to determine if these cave dwelling animals carried any
cells of the...
The female Philometra americana Ekbaum, 1933 is a common
subcutaneous parasite of the starry flounder, Platichthyes stellatus (Pallas) of Yaquina Bay, Lincoln County, Oregon. Maturation of this
worm produces noticeable red cysts subcutaneously between the fin
and tail rays and similarly on the operculum. The gravid female
penetrates the epidermis...
The host fish for this study were collected from January
through June of 1965. Tidepools were selected at Bar View, Cape
Arago, Neptune State Park, Seal Rock, and Yaquina Head. Of the
187 fish examined, 132 were infected. The following host fishes
yielded the following parasites. New Host records are...
Oögenesis in the sea urchin Strongylocentrotus purpuratus
was studied by histological methods and by histochemical techniques
for polysaccharides, lipids, and nucleic acids Urchins were
collected at Yaquina Head, Oregon at regular intervals between
April 1966 and March 1967. An attempt was made to correlate
seasonal variations in the coastal water...
This study deals with the histochemistry of the
changing patterns of glycogen in the uterus and extra-embryonic membranes of the golden hamster (Mesocricetus
auratus Waterhouse). The uterus and extra-embryonic
membranes of the golden hamster representing days of
gestation from six to term were stained with periodic
acid-Schiff and Best's carmine....
The effects of coumestrol on the uterine weight, uterine fluid
imbibition, uterine nucleic acid content, adrenal weight and body
weight of female rats were studied. Daily doses of 20 micrograms
of coumestrol per 0.1cc propylene glycol were administered subcutaneously
to spayed rats following a seven day recovery period,
for durations...
Weight-specific oxygen consumption of intact bluegill sunfish
was estimated in relation to body weight and temperature by the
sealed jar method. The relationship between body weight and weight-specific oxygen consumption was represented by the equation: Y = aX[superscript b]⁻¹ in which Y is the weight-specific oxygen consumption, expressed
as cc/kg/hr,...
Gonatus fabricii (Lichtenstein, 1818), G. magister Berry,
1913, G. anonychus Pearcy and Voss, 1963, and Gonatopsis borealis
Sasaki, 1923 (Gonatidae) are squid forming a major portion of the
cephalopod fauna found off the Oregon coast. A study was undertaken
to determine the morphological differences among the four species
of squid....
