Thesis--University of Florida. / Description based on print version record. Typescript. Vita. Bibliography: leaves 145-148.

The two purine alkaloids, phidolopin (36) and desmethylphidolopin (37), originally isolated from Phidolopora pacifica, were synthesized in order to produce sufficient quantities of the natural products for extended biological and pharmacological screening and to confirm the previous structural assignment of 37 which was based on spectral data. Various combinations of phidolopin (36), desmethylphidolopin (37), 4-hydroxymethyl-2-nitrophenol (38) and 4-methoxymethyl-2-nitrophenol (39) were isolated from four different species of bryozoans, Diaperoecia californica, Heteropora alaskensis, Tricellaria ternata and Hippodiplosia insculpta. A dietary origin is suggested for these metabolites. The red sponge, Anthoarcuata graceae yielded six novel steroids including the ∆⁴-3,6-diketosteroids 116, 117, the A-nor steroids anthosterone A (118) and anthosterone B (119) as well as two diosphenol containing steroids, 120 and 121. The proposed structures were based on a combination of spectral analysis, chemical interconversions, synthesis, and single crystal X-ray diffraction analysis. / Science, Faculty of / Chemistry, Department of / Graduate

Academical dissertation - Uppsala. / "Reprinted from Zoologiska bidrag från Uppsala, Band 10." "Literature": p. 491-498.

The marine bryozoan Electra pilosa typically inhabits ephemeral substrata in the intertidal and shallow subtidal, and is probably the ecologically most successful bryozoan species in British waters. Modular organisms like E. pilosa frequently evolve pronounced phenotypic plasticity to cope with the ecological challenges resulting from passive larval dispersal into unpredictable habitats, and temporal variability of the environment colonized by the immobile adult stage. E. pilosa colonies on wave-exposed shores differ morphologically from those found on sheltered shores in possessing numerous long-spined zooids. The present study demonstrates that spine formation in E. pilosa is environmentally inducible by wave-related abrasion by macroalgae; additionally, the spines also have a fortuitous anti-predator effect in discouraging predation by the nudibranchs Adalaria proxima and Polycera quadrilineata. It is suggested that the inducible spines of E. pilosa constitute an adaptation for the protection of feeding polypides in high-energy environments, and that plasticity for the trait is of adaptive value in this organism which exploits a diverse range of habitats. Although a number of traits in this species clearly are subject to considerable phenotypic plasticity, other attributes apparently are highly deterministic, heritable and genotype-specific. Electra pilosa displays pronounced among-genotype variation in colony growth rate, and the present study shows that this variation is due to proximate factors which affect growth rate and covary with genotype. This study also presents the first evidence of senescence at the zooid level in E. pilosa: Zooids deteriorate systematically over time, as indicated by decreasing polypide life spans and increasing polypide regeneration times, but in contrast to this, whole-organism senescence does not appear to occur in this species.

Thesis (M.Sc.)--Memorial University of Newfoundland, 2003. / Restricted until October 2004. Bibliography: leaves 108-124.

Os briozoários compreendem um Filo de invertebrados geralmente coloniais, com aproximadamente 5.500 espécies descritas no mundo e apenas 346 relatadas para o Brasil. O presente trabalho trata do conhecimento sobre a diversidade de briozoários marinhos de águas rasas do Município de Maceió, Estado de Alagoas, incentivado pela carência de estudos na costa Nordeste do Brasil. Com os objetivos redescrever os táxons encontrados em Maceió e estudar suas variações morfológicas e distribuição espacial de acordo com o substrato ocupado pelas colônias, espécimes de briozoários foram coletados em 9 pontos no litoral de Maceió, em diferentes épocas do ano, durante períodos de marés baixas de sizígia. As colônias foram retiradas de diferentes substratos: seixos, rochas, algas, hidróides, ascídias, corais, poríferos, conchas, tubos de poliquetas, cracas e e construções antropogênicas. A identificação dos espécimes foi baseada em literatura específica e na comparação com materiais provenientes de outras regiões do Atlântico. Os espécimes foram estudados morfológica e morfometricamente quanto a caracteres macro e microscópicos, utilizando microscopia óptica e microscopia eletrônica de varredura. Foram encontradas 65 espécies, classificadas em 44 gênero e 36 famílias, com apenas dois táxons identificados no nível de família ou superior (uma espécie de Schizoporellidae e uma espécie de Lepraliomorpha). Duas espécies tiveram classificação incerta (Bowerbankia ?maxima e Bowerbankia aff. gracilis), e outras 20 espécies (32,5%) foram classificadas até o nível de gênero: Jellyella(1), Biflustra (1), Nellia (1), Bugula (2), Beania (1), Scrupocellaria (2), Puellina (1), Hippothoa (1), Trypostega (1), Reptadeonella (1), Celleporaria (1), Parasmittina (1), Hippoporina (1), Stylopoma (2), Cosciniopsis, (1), <Fenestrulina (1), e Trematooecia (1). Duas espécies foram registradas pela primeira vez na costa brasileira: Synnotum pembaense Waters, 1913 e Chlidonia pyriformis (Bertoloni, 1810). Um novo táxon foi descrito (VIEIRA et al., 2007), que representa também o primeiro relato do gênero Vasignyella Gordon, 1989 para o Atlântico. Entre os táxons encontrados, 1/3 compreendem formas conhecidas apenas no Atlântico e aproximadamente 1/3 são formas desconhecidas em outras localidades do Atlântico. Aproximadamente 50% das espécies ocorreram em somente um tipo de substrato e os principais substratos utilizados foram algas e rochas / Bryozoans are a mostly marine invertebrate phylum, generally colonial, comprising approximately 5.500 recent species worldwide, of which only 346 species are recorded for the Brazilian coast. Motivated by the lack of knowledge about the biodiversity of marine invertebrates on the northeastern Brazil, the goal of this study is to provide information about the systematics and distribution of marine bryozoans in shallow waters along the cost of Maceió, Alagoas state. The specimens were collected in 9 stations along the coast of Maceió, during spring tides and in different times of the year, and studied according to their morphological variation, distribution, and substratum occupied by the colonies. Colonies were collected in different substrata: rocks, algae, hydroids, ascidians, corals, sponges, mollusk shells, tube of worms, barnacles and anthropogenic surfaces. The identification of specimens was carried out using the literature available and through comparison with other samples from other localities in the Atlantic. The specimens were morphologically and morphometrically analyzed utilizing macro- and microscopic characters employing optical and scanning electron microscopy. Sixty five species were found, belonging to 44 genera and 36 families, of which two were only identified to a taxonomic rank at family level or higher (Schizoporellidae and Lepraliomorpha). Two species were considered incertae sedis (Bowerbankia ?maxima e Bowerbankia aff. gracilis), and other 20 species (32,5%) were determined only at genus level:Jellyella (1), Biflustra (1), Nellia (1), Bugula (2), Beania (1), Scrupocellaria (2), Puellina (1), Hippothoa (1), Trypostega (1), Reptadeonella (1), Celleporaria (1), Parasmittina (1), Hippoporina (1), Stylopoma (2), Cosciniopsis (1), Fenestrulina (1) and Trematooecia (1). Two species were recorded for first time on the Brazilian coast: Synnotum pembaense Waters, 1913 and Chlidonia pyriformis (Bertoloni, 1810). A new species was described (VIEIRA et al., 2007), being the first record for the genus Vasignyella Gordon, 1898 in Atlantic waters. Among the taxa found, 1/3 was restricted in distribution to the Atlantic, and another ~1/3 was not yet recorded for this ocean. About 50% of species were found only on one type of substratum, being algae and rocks the main substrata for the colonies studied.

Os briozoários compreendem um Filo de invertebrados geralmente coloniais, com aproximadamente 5.500 espécies descritas no mundo e apenas 346 relatadas para o Brasil. O presente trabalho trata do conhecimento sobre a diversidade de briozoários marinhos de águas rasas do Município de Maceió, Estado de Alagoas, incentivado pela carência de estudos na costa Nordeste do Brasil. Com os objetivos redescrever os táxons encontrados em Maceió e estudar suas variações morfológicas e distribuição espacial de acordo com o substrato ocupado pelas colônias, espécimes de briozoários foram coletados em 9 pontos no litoral de Maceió, em diferentes épocas do ano, durante períodos de marés baixas de sizígia. As colônias foram retiradas de diferentes substratos: seixos, rochas, algas, hidróides, ascídias, corais, poríferos, conchas, tubos de poliquetas, cracas e e construções antropogênicas. A identificação dos espécimes foi baseada em literatura específica e na comparação com materiais provenientes de outras regiões do Atlântico. Os espécimes foram estudados morfológica e morfometricamente quanto a caracteres macro e microscópicos, utilizando microscopia óptica e microscopia eletrônica de varredura. Foram encontradas 65 espécies, classificadas em 44 gênero e 36 famílias, com apenas dois táxons identificados no nível de família ou superior (uma espécie de Schizoporellidae e uma espécie de Lepraliomorpha). Duas espécies tiveram classificação incerta (Bowerbankia ?maxima e Bowerbankia aff. gracilis), e outras 20 espécies (32,5%) foram classificadas até o nível de gênero: Jellyella(1), Biflustra (1), Nellia (1), Bugula (2), Beania (1), Scrupocellaria (2), Puellina (1), Hippothoa (1), Trypostega (1), Reptadeonella (1), Celleporaria (1), Parasmittina (1), Hippoporina (1), Stylopoma (2), Cosciniopsis, (1), <Fenestrulina (1), e Trematooecia (1). Duas espécies foram registradas pela primeira vez na costa brasileira: Synnotum pembaense Waters, 1913 e Chlidonia pyriformis (Bertoloni, 1810). Um novo táxon foi descrito (VIEIRA et al., 2007), que representa também o primeiro relato do gênero Vasignyella Gordon, 1989 para o Atlântico. Entre os táxons encontrados, 1/3 compreendem formas conhecidas apenas no Atlântico e aproximadamente 1/3 são formas desconhecidas em outras localidades do Atlântico. Aproximadamente 50% das espécies ocorreram em somente um tipo de substrato e os principais substratos utilizados foram algas e rochas / Bryozoans are a mostly marine invertebrate phylum, generally colonial, comprising approximately 5.500 recent species worldwide, of which only 346 species are recorded for the Brazilian coast. Motivated by the lack of knowledge about the biodiversity of marine invertebrates on the northeastern Brazil, the goal of this study is to provide information about the systematics and distribution of marine bryozoans in shallow waters along the cost of Maceió, Alagoas state. The specimens were collected in 9 stations along the coast of Maceió, during spring tides and in different times of the year, and studied according to their morphological variation, distribution, and substratum occupied by the colonies. Colonies were collected in different substrata: rocks, algae, hydroids, ascidians, corals, sponges, mollusk shells, tube of worms, barnacles and anthropogenic surfaces. The identification of specimens was carried out using the literature available and through comparison with other samples from other localities in the Atlantic. The specimens were morphologically and morphometrically analyzed utilizing macro- and microscopic characters employing optical and scanning electron microscopy. Sixty five species were found, belonging to 44 genera and 36 families, of which two were only identified to a taxonomic rank at family level or higher (Schizoporellidae and Lepraliomorpha). Two species were considered incertae sedis (Bowerbankia ?maxima e Bowerbankia aff. gracilis), and other 20 species (32,5%) were determined only at genus level:Jellyella (1), Biflustra (1), Nellia (1), Bugula (2), Beania (1), Scrupocellaria (2), Puellina (1), Hippothoa (1), Trypostega (1), Reptadeonella (1), Celleporaria (1), Parasmittina (1), Hippoporina (1), Stylopoma (2), Cosciniopsis (1), Fenestrulina (1) and Trematooecia (1). Two species were recorded for first time on the Brazilian coast: Synnotum pembaense Waters, 1913 and Chlidonia pyriformis (Bertoloni, 1810). A new species was described (VIEIRA et al., 2007), being the first record for the genus Vasignyella Gordon, 1898 in Atlantic waters. Among the taxa found, 1/3 was restricted in distribution to the Atlantic, and another ~1/3 was not yet recorded for this ocean. About 50% of species were found only on one type of substratum, being algae and rocks the main substrata for the colonies studied.

No description available.

Thesis (Ph.D.)-- University of Adelaide, Dept of Zoology, 1982. / Typescript (photocopy).

Thesis (M.S.)--Michigan State University. Geological Sciences, 2008. / Title from PDF t.p. (viewed on July 28, 2009) Includes bibliographical references (p. 64-71). Also issued in print.