A fluke found in the intestine of the red-legged frog, Rana
aurora Baird and Girard, was identified as Brachycoelium lynchi
Ingles 1936. The life cycle of this fluke was studied and found to
be of the lecithodendriid type rather than brachycoeliid. Instead
of having one intermediate host, as is the...
The acanthocephalan Echinorhynchus lageniformis Ekbaum,
1938, is a common intestinal parasite of the starry flounder, Platichthys
stellatus (Pallas), of Yaquina Bay, Lincoln Co., Oregon. Three
hundred and sixty-one flounders were examined and 146 (40.5 percent)
were found to harbor infections of E. lageniformis.
Cystacanths of E. lageniformis were found encysted...
The morphology of a rather rare parasitic copepod was
studied. Ismaila monstrosa Bergh, an endoparasitic copepod was
found in the nudibranch, Antiopella fusca, at Coos Bay, Oregon.
Many anatomical features were found, which were different from
previous descriptions. Males were described for the first time.
Young males lacked the gonadal...
The fish Cymatogaster aggregata, Embiotoca lateralis and
Phanerodon furcatus served as definitive hosts for the trematode
Telolecithus pugetensis Lloyd and Guberlet. Eggs that were collected
from the terminal part of the uterus of mature worms were found to
have undergone several cleavages, but complete development was
observed only in some...
A survey of the major bodies of water, temporary and perennial,
in the region of Northern Utah revealed a limited distribution of
the Notostraca. Lepidurus (Linn.), the only representative
found, was restricted to a single temporary shallow lake. Dry Lake,
in the southern end of Cache County.
Dry Lake occupies...
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...
Rhabdocoels of the genus Paravortex are parasites of marine
molluscs. The bent-nosed clams, Macoma nasuta(Conrad, 1837) of
Yaquina Bay, Lincoln County, Oregon are commonly infected with a new
species of Paravortex. The morphology of the adult worm has been
described and it has been compared to the other three species...
The stages in the life history of the parasitic copepod Nectobrachia
indivisa Fraser, 1920, have been described.
The adult female lives permanently attached to the gills of the
starry flounder, Platichthys stellatus (Pallas, 1811) Girard, 1854.
The adult male is a dwarf, which usually lives attached to the genital
process...
Lymnea columella snails were exposed to 3-5 newly emerged
Fasciola hepatica miracidia. The procedure insured 75-100 percent
infection of the host. Groups of 40 each exposed snails were placed
in controlled temperature containers and maintained at the following
series of temperatures: 8°, 15°, 20°, 25°, 30°, and 35° C. Two...
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...