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Browsing Theses, Dissertations and Student Research Papers (Zoology) by Author

Browsing Theses, Dissertations and Student Research Papers (Zoology) by Author "Pratt, Ivan"

Now showing items 1-11 of 11

The ecology of Lepidurus apus in northern Utah and some limnological requirements for hatching

Braswell, Audrey Lee Jr (1963-05-03)

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 s ...
A green algal symbiont in Clinocardium nuttallii

Hartman, Michael Colyn (1972-07-26)

Clinocardium nuttallii from Yaquina Bay, Oregon, were found to harbor an algal symbiont in the siphon, mantle and occasionally the foot tissues. Approximately 35 percent of the population in the study area was infecte ...
Host-parasite relationships of the staghorn sculpin Leptocottus armatus Girard in Oregon

Burreson, Eugene Michael (1972-09-29)

The staghorn sculpin Leptocottus armatus is abundant in the Yaquina Bay estuary on the central Oregon coast and also occurs offshore in shallow water. A total of 560 L. armatus were collected at three locations in Yaq ...
Life cycle and host specificity of Diclidophora sp. (Monogenea-Diclidophoridae), a parasite of embiotocid fishes

Hanson, Alfred Warren (1972-07-18)

The life cycle of a monogenean, Diclidophora sp., was studied with special attention to the time required for developmental stages to occur. Eggs are produced by adult worms at the rate of one every 13.5 minutes and r ...
The life cycle of the trematode Telolecithus pugetensis Lloyd & Guberlet, 1932

DeMartini, John David (1963-08-30)

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 ...
Life history of the caligid copepod Lepeophtheirus hospitalis Fraser, 1920 (Crustacea:Caligoida)

Voth, David Richard (1971-08-17)

Specimens of the starry flounder, Platichthys stellatus (Pallas, 1811) Girard, 1854, were collected in Yaquina Bay near Newport, Oregon, from July, 1970, to August, 1971. Fish infected with Lepeophtheirus hospitalis ...
The morphology and ecology of Echinorhynchus lageniformis Ekbaum, 1938 (Acanthocephala)

Barnes, James R. (1966-06-24)

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 fl ...
The morphology of Ismaila monstrosa Bergh (Copepoda)

Belcik, Francis Peter (1965-05-14)

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, ...
Some hemiurid trematodes of Oregon marine fishes

McCauley, James Elias (1954-04-21)
The swimming response of the Sacconereis stage of Autolytus varius to changes in hydrostatic pressure

Smith, Randall William (1969-05-09)

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

Hanson, Alfred Warren (1969-12-11)

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. Th ...