Thesis (Ph.D.)--University of Adelaide, School of Earth and Environmental Sciences, Discipline of Geology and Geophysics, 2003? / Includes Publication list by the author as appendix A. "July 2003." Includes bibliographical references (leaves 308-324).

Thesis (Ph.D.)--Victoria University of Wellington, 2008. / Includes bibliographical references.

Call number: LD2668 .T4 1964 P31 / Master of Science

No description available.

Specimens of freshwater bryozoans (Ectoprocta) and sponges (Porifera: Spongillidae), two of the most poorly known faunal groups in Canada, were obtained from various locations in Ontario, Quebec, New Brunswick, Nova Scotia, Prince Edward Island, and Newfoundland. A total of 14 species of bryozoans and 15 species of sponges were identified. In 31 cases, these species were recorded from a province for the first time. Species new to Canada include the bryozoans Lophopodella carteri, Plumatella orbisperma, and Pottsiella erecta, and the sponges Radiospongilla crateriformis, Spongilla aspinosa, and Trochospongilla horrida. The morphology, taxonomy, distribution, and ecology of each species are examined. Several taxonomic revisions are made. Eunapius mackayi and Plumatella orbisperma are redescribed. Spongilla heterosclerifera, considered an endangered species, is shown to be a species mixture. Taxonomic keys to Eastern Canadian species of freshwater bryozoans and sponges are presented. New limits of tolerance to pH, calcium and magnesium levels, and water temperature are established for several species.

Thesis (Ph. D.)--University of California, San Diego, 1999. / Vita. Includes bibliographical references.

No description available.

No description available.

Thesis (Ph.D.)--University of Melbourne, Dept. of Zoology, 2007. / Typescript. Includes bibliographical references (leaves 218-237).

Submitted by Haroudo Xavier Filho (haroudo.xavierfo@ufpe.br) on 2016-10-07T14:36:45Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação_ThaynaCavalcanti_BiologiaAnimal_2016.pdf: 2263756 bytes, checksum: 798ca1c12e15256db092df9fe703fdaa (MD5) / Made available in DSpace on 2016-10-07T14:36:45Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação_ThaynaCavalcanti_BiologiaAnimal_2016.pdf: 2263756 bytes, checksum: 798ca1c12e15256db092df9fe703fdaa (MD5) Previous issue date: 2016-07-01 / Briozoários são organismos sésseis e coloniais, que dependem de uma superfície firme para assentamento larval e crescimento da colônia. Entre os diferentes substratos disponíveis para briozoários, as esponjas podem oferecer uma superfície favorável, trazendo muitas vantagens como a presença de compostos químicos que inibem a predação. Este estudo verificou a presença de briozoários em seis espécies de esponjas, com finalidade de avaliar a abundância e riqueza desses briozoários em diferentes esponjas. Três espécimes das esponjas, Amphimedon compressa Duchassaing & Michelotti, 1864, Amphimedon viridis Duchassaing & Michelotti, 1864, Desmapsamma anchorata (Carter, 1882), Dysidea etheria de Laubenfels, 1936, Haliclona implexiformis (Hechtel, 1965) e Tedania ignis (Duchassaing & Michelotti, 1864) foram coletadas mensalmente entre setembro de 2014 e fevereiro de 2016, em Pontas de Pedra, Pernambuco, Brasil. Os briozoários encontrados foram identificados até o menor nível taxonômico possível e quantificados. Um total de 324 espécimes de esponjas foi analisado, no qual destas 88 apresentavam briozoários em sua superfície (27%). Onze espécies de briozoários pertencentes à Classe Gymnolaemata foram encontrados nas esponjas, sendo quatro pertencentes à Ordem Ctenostomata, Amathia distans Busk, 1886, Amathia verticillata (delle Chiaje, 1822), Amathia vidovici Heller,1867 e Nolella stipata Gosse, 1855, sete da Ordem Cheilostomata, Beania klugei Cook, 1968, Catenicella uberrima (Harmer, 1957), Caulibugula dendograpta (Waters, 1913), Licornia sp., Savignyella lafontii (Audoin, 1826), Synnotum aegyptiacum Canu & Bassler, 1928 e Thalamoporella floridana Osburn, 1940. Briozoários foram abundantes nas esponjas Te. ignis e De. anchorata e pouco frequentes em Ap. compressa e Ap. viridis. Desmapsamma anchorata e Te. ignis apresentaram a maior riqueza de espécies (nove espécies em cada esponja), seguida por Dy. etheria (sete espécies). Uma baixa riqueza de espécies foi observada em Ap. compressa, com apenas três espécies de briozoários, Ap. viridis com quatro espécies, e H. implexiformis com cinco espécies. Apenas o briozoário N. stipata foi encontrado em todas as espécies de esponjas, enquanto que At. distans e At. vidovici não foram encontradas apenas em Ap. compressa. Uma maior riqueza e abundancia de briozoários foram encontradas em De. anchorata e Te. ignis, que apresentam superfície lisa e aveludada, e lisa e vilosa, respectivamente. Por outro lado, superfície lisa também é característica das espécies Ap. compressa e Ap. viridis, que apresentaram a menor frequência e diversidade de briozoários. Adicionalmente, as esponjas De. anchorata e Dy. etheria que apresentam superfície lisa e conulosa, respectivamente, compartilharam grande parte das espécies encontradas. A presença de metabólitos secundários nas esponjas do gênero Amphimedon que apresentam toxicidade já descrita na literatura, pode ter influenciado na ocorrência dos briozoários. Enquanto que as esponjas Te. Ignis, De. anchorata e Dy. Etheria, que apresentaram uma grande abundância de briozoários, podem ter provido um microhabitat adequado para os briozoários da região. O padrão temporal de ocorrência dos briozoários nas esponjas durante os 18 meses de coleta foi aleatório. O presente trabalho permite identificar alguns padrões da ocorrência dos briozoários, relacionado a composição química das esponjas e sua posição no substrato. / Bryozoans comprise sessile, colonial organisms that require a hard surface for settlement and growth. Among different substrata for bryozoans, sponges may provide suitable substrata, with advantages such as presence of compounds against predators. This study analyses the bryozoan community on six sponges species throughout 18 months, to evaluate the presence of bryozoans on its surface. Three specimens of each sponges, Amphimedon compressa Duchassaing & Michelotti, 1864, Amphimedon viridis Duchassaing & Michelotti, 1864, Desmapsamma anchorata (Carter, 1882), Dysidea etheria de Laubenfels, 1936, Haliclona implexiformis (Hechtel, 1965) and Tedania ignis (Duchassaing & Michelotti, 1864), were taken monthly betweem September 2014 to February 2016, in Pontas de Pedra, Pernambuco State, Brazil. Bryozoans were identified to the lowest taxonomic level, and quantified. Total of 324 specimens of sponges were analysed, 88 from those were found bryozoans on its surface (27%). Eleven gymnolaemate bryozoans were found on sponges being four of the Order Ctenostomata, Amathia distans Busk, 1886, Amathia verticillata (delle Chiaje, 1822), Amathia vidovici Heller,1867 and Nolella stipata Gosse, 1855, and seven species Cheilostomata, Beania klugei Cook, 1968, Catenicella uberrima (Harmer, 1957), Caulibugula dendograpta (Waters, 1913), Licornia sp., Savignyella lafontii (Audoin, 1826), Synnotum aegyptiacum Canu & Bassler, 1928 and Thalamoporella floridana Osburn, 1940. Bryozoans were considered abundant on the sponges Te. ignis and De. anchorata, but few frequents on Ap. compressa and Ap. viridis. On De. anchorata and Te. ignis were found the highest bryozoan richness (9 species of bryozoan per sponge species), followed by Dy. etheria (7 bryozoan species). A low species richness was observed in Ap. compressa, Ap. viridis and H. implexiformis with respectively three, four and five species of bryozoans on their surface. Only N. stipata was found on the six sponge species, while At. distans and At. vidovici were not found only on Ap. compressa. Higher richness and abundance of bryozoans were found in De. anchorata and Te. ignis, with smooth and velvety surface, smooth and villous surface, respectively. Smooth surface is also characteristic of Ap. compressa and Ap. viridis, with the lowest frequency and diversity of bryozoans. Additionally, on sponges De. anchorata and Dy. etheria, with smooth and conulose surface respectively, were shared the majority of bryozoan species. We suggest the presence of secondary metabolites may have interfered the bryozoans on sponges of Amphimedon genus. Sponges Te. ignis, De. anchorata and Dy. etheria, have an abundance of bryozoans; thus, we suggest these sponges may allow a suitable substratum for the bryozoans. The temporal variation of bryozoans on sponges was random. In present work some patterns of occurrence of bryozoans are presented, with relation to the chemical composition and position of sponge.