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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Zoogeography of the Nudibranchia in Taiwan and adjacent islands, with note on the mucus secreting of Phyllidiella pustulosa

Huang, li-jin 09 August 2006 (has links)
The geographical location of Taiwan has rendered to her high marine biodiversity. One of the objective of the present study is to survey the nudibranchia in Taiwan and her adjacent islands in including the Liu-chiu Yu, Peng-hu, Green island and Orchid island (Lan-yu) and the related zoogeographic issues. Field surveys resulted in 60 nudibranch species on the northeastern coast, 42 species on Nanwan (Taiwan), 43 species on Peng-hu, 33 species on Liu-Chiu Yu, 29 species on Green island, and 18 species on Orchid island (Lan-yu). Among these areas ,species diversity peaked on the northeastern coast. Analysis of species component led to two clusters, the northeastern coast-Peng-hu and Liu-chiu Yu- Nanwan-Green island- Orchid island(Lan-yu). An altitudinal effect may account for that similarity pattern. Results also indicated that Phyllidiella pustulosa is the top dominant species in almost all the surveyed areas. Upon subjected to external stimulation, P. pustulosa responded by excreting a white mucous. A second objective of the present study is to examine the cell or structures responsible for the secretion of this possible poisonous mucous. Okenia japonica is an unusual species found only on Peng-hu. In the spring of 2004, it was found at Long-men in an exceptional by large number of as many as 87 individuals and these small nudibranchs were associated with a species of block sponge. Both this nudibranch species and the sponge were absent at in the summer of this year. They recurred in the spring of 2005 but being not as abundant as in the previous spring. Appearance of this nudibranch may be closely related to the sponge. Among all the surveyed sites, An Wai-an on Pen-hu was the top species site: 15 species in the spring of 2005, 20 species and 12 species in the spring and summer of 2006, respectively. Most of them were Chromodorididae. Factors leading to this ¡¥hot spot¡¦ phenomenon remains to be studied. Among the sites on Liu-Chiu Yu, Meiren-dong were the most species site. Seasonally, species number at this site peaked in the fall. Phyllidiidae species were most commonly on Liu-chiu Yu, Green island and Orchid island (Lan-yu). Instead, Chromodorididae species were most common on Pen-hu. No obvious dominant group was found on the northeastern coast. The predominant muddy seafloor on the Pen-hu may provide a proper habited for Chromodorididae. Cells associated with the white mucous of P. pustulosa distributed in underneath the external layer of the mantle in. Extraction of this mucous showed lethal effect on cancer cells. Consequently, this mucous is poisonous. Its capability of chemical defense may have granted its dominance in these surveyed areas.
2

Frequency distributions of mammalian body size analyzed by continent

Rusler, Renee Denise, 1962- January 1987 (has links)
No description available.
3

Human influences on historical and current wildlife distributions from Lewis & Clark to today /

Laliberte, Andrea S. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2004. / Typescript (photocopy). Includes bibliographical references. Also available on the World Wide Web.
4

The dispersal centres of terrestrial vertebrates in the Neotropical realm A study in the evolution of the Neotropical biota and its native landscapes.

Müller, Paul, January 1973 (has links)
Thesis--University of the Saarland, 1970. / Translated from the German. Bibliography: p. 207-244.
5

Dispersal centres of Sphingidae (Lepidoptera) in the Neotropical region

Schreiber, Harald. January 1978 (has links)
Thesis--University of the Saarland, Saarbrücken. / Translated by Ingrid Schreiber. Includes bibliographical references (p. 129-136) and index.
6

The paleozoic geosyncline of the Klamath Mountains, California

Roehl, Perry O. January 1955 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1955. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 156-159).
7

A survey of the vertebrate animals of Mount Jefferson, Oregon /

Voth, Elver. January 1963 (has links)
Thesis (M.A.)--Oregon State University, 1963. / Typescript. Mounted photographs. Includes bibliographical references (leaves 169-174). Also available on the World Wide Web.
8

The Copepoda (Calanoida, Cyclopoida) of northern Baffin Bay and southern Nares Strait : their distribution and aspects of their biology.

Tidmarsh, W. Gordon. January 1973 (has links)
No description available.
9

The rattlesnakes, genera Sistrurus and Crotalus A study in zoogeography and evolution.

Gloyd, Howard Kay, January 1940 (has links)
Thesis--University of Michigan. / Without thesis statement. Bibliography: p. 250-266.
10

Quaternary biogeography of western North America insights from mtDNA phylogeography of endemic vertebrates from Haida Gwaii /

Byun, S. Ashley January 1998 (has links) (PDF)
Thesis (Ph. D.)--University of Victoria, 1998. / Includes bibliographical references (leaves 243-269).

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