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The symbiotic relationships and morphology of Paravortex sp. nov. (Turbellaria, Rhabdocoelida) a parasite of Macoma nasuta Conrad, 1837

Creator:: Hanson, Alfred Warren
Abstract:: 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...
Resource Type:: Masters Thesis

The morphology of the reproductive tracts of the Pacific Northwest pulmonates

Creator:: Porter, Clarence Alan
Abstract:: The morphology and taxonomic use of the reproductive tracts of some of the Pacific Northwest Pulmonates were studied. The snails examined were, Monadenia fidelis (Gray), Vespericola columbiana (Lea), Allogona townsendiana (Lea), Haplotrema sportella (Gould), and Haplotrema vancouverense (Lea). The length of the reproductive tracts of nine or more individuals of...
Resource Type:: Masters Thesis

The morphology of Ismaila monstrosa Bergh (Copepoda)

Creator:: Belcik, Francis Peter
Abstract:: 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...
Resource Type:: Masters Thesis

The morphology and ecology of Echinorhynchus lageniformis Ekbaum, 1938 (Acanthocephala)

Creator:: Barnes, James R.
Abstract:: 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...
Resource Type:: Masters Thesis

The life history of Neoechinorhynchus rutili (Mueller, 1780) and its development in the intermediate host (Acanthocephala ; Neoechinorhychidae)

Creator:: Merritt, Sheridan Vernon
Abstract:: The fish of Suttle Lake, Oregon, have been found to harbor an acanthocephalan parasite, which lives attached to the mucosa of the intestine. Between July 1961 and January 1963, several hundred of these fish were exarnined and nearly every one was infected with this parasite, which was identified as Neochinorhynchus...
Resource Type:: Masters Thesis

The life cycle of a progenetic trematode (Opecoelidae) from Cottus asper

Creator:: Crandell, George Frank
Resource Type:: Masters Thesis

The associates of four species of marine sponges of Oregon and Washington

Creator:: Long, Edward R.
Abstract:: Four species of sponge from the coasts of Oregon and Washington were studied and dissected for inhabitants and associates. All four species differed in texture, composition, and habitat, and likewise, the populations of associates of each species differed, even when samples of two of these species were found adjacent to...
Resource Type:: Masters Thesis

Rhizocephalan parasites of hermit crabs in the San Juan Archipelago

Creator:: Weatherly, Norman Fred
Resource Type:: Masters Thesis

Fine structure and histochemistry of the cuticle of the cercaria of Acanthatrium oregonense (Macy)

Creator:: Inhelder, Carol Marie
Abstract:: The cuticle of the cercaria of Acanthatrium oregonense was studied by means of electron microscopy and histochemistry. The integument of this cercaria has a definite ultrastructure which varies in different regions of the body. The body cuticle is a syncytium containing vesicles and mitochondria. It is bounded externally by a...
Resource Type:: Masters Thesis

Effects of temperature on the development of Fasciola hepatica larval forms in Lymnea columella

Creator:: Wall, David Jerome
Abstract:: 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...
Resource Type:: Masters Thesis

A myxosporidian from the musculature of spring Chinook salmon

Creator:: Wyatt, Ellis Junior
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The symbiotic relationships and morphology of Paravortex sp. nov. (Turbellaria, Rhabdocoelida) a parasite of Macoma nasuta Conrad, 1837

The morphology of the reproductive tracts of the Pacific Northwest pulmonates

The morphology of Ismaila monstrosa Bergh (Copepoda)

The morphology and ecology of Echinorhynchus lageniformis Ekbaum, 1938 (Acanthocephala)

The life history of Neoechinorhynchus rutili (Mueller, 1780) and its development in the intermediate host (Acanthocephala ; Neoechinorhychidae)

The life cycle of a progenetic trematode (Opecoelidae) from Cottus asper

The associates of four species of marine sponges of Oregon and Washington

Rhizocephalan parasites of hermit crabs in the San Juan Archipelago

Fine structure and histochemistry of the cuticle of the cercaria of Acanthatrium oregonense (Macy)

Effects of temperature on the development of Fasciola hepatica larval forms in Lymnea columella

A myxosporidian from the musculature of spring Chinook salmon

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