Phan Van Ngan

• PhD
• University of São Paulo

Este livro foi concebido a partir do Curso de Difusão Cultural Noções de Oceanografia, ministrado semestralmente desde 1993, por docentes, pós-graduandos, pós-doutorandos e técnicos do Instituto Oceanográfico da Universidade de São Paulo (IOUSP), de forma voluntária, nas manhãs de domingo. Mesmo durante a pandemia o curso foi mantido e ministrado p...

Temperature is one of the most important environmental factors influencing aquatic organisms at different levels and drastic changes can cause adverse effects on individuals, populations and ecosystems. This study investigated the behavioral response to heating stress and the protein expression of Hsp70 and p53 in muscle, liver, gills and heart at...

The expression of Hsp70 and p53, by applying the immunohistochemical assays, was assessed in Antarctic amphipods Godondogeneia antarctica from shallow waters around the Brazilian Antarctic Station “Comandante Ferraz” (EACF), in two distinct samplings. Intensity of expression was evaluated as the HSCORE of preparations from animals sampled nearby th...

Séries de biomonitoramentos foram executadas semanalmente, durante o mês de fevereiro de 2012, para se investigar a genotoxicidade de ambientes costeiros rasos no entorno da Estação Antártica "Comandante Ferraz (EACF). O ensaio cometa foi aplicado para se avaliar os danos ao DNA hemocitário de crustáceos anfípodes Gondogeneia antarctica coletados e...

The energy budget of Antarctic stenothermic and/or stenohaline ectotherms is modulated by variations of temperature and salinity. The joint effects of these latter on polar organisms have been but little studied. Data on this subject are of great importance for an understanding of the energy demand of Antarctic animals such as amphipods, especially...

In the environment, anthracene is characterized as being persistent, bioaccumulative and toxic to aquatic organisms. Biotransformation of xenobiotic substances, such as anthracene, produces reactive oxygen species that may induce DNA strand breaks. The aim of the present study was to evaluate the DNA damage in juvenile T. carolinus exposed to diffe...

many of them are stenothermal and/or stenohaline ectotherms. In this context, the aim of this study is to contribute to knowledge on variations in the energy demand of the Antarctic amphipod, Gondogeneia antarctica as a function of temperature and salinity. Experiments were held at the Brazilian Antarctic Station "Comandante Ferraz", under controll...

The energy allocation from food consumption (C) to fecal losses (F), routine oxygen consumption (Rr), ammonia excretion (U) and body mass production (P) was assessed in juveniles of Centropomus parallelus acclimated for 15 and 30 days to 5, 20 and 30 salinities, and temperature of 21º C. Oxygen consumption and ammonia excretion were linear related...

In the present study, the polycyclic aromatic hydrocarbon (PAH) genotoxicity was investigated in a one-step predator–prey relationship with the trophic-related marine species. Florida pompanos were fed for 5 and 10 days with pink shrimp post larvae previously exposed to benzo(a)pyrene (BaP) concentrations. Parent BaP body burden was measured in sam...

In the present study, the polycyclic aromatic hydrocarbon (PAH) genotoxicity was investigated in a one-step predator-prey relationship with the trophic-related marine species. Florida pompanos were fed for 5 and 10 days with pink shrimp post larvae previously exposed to benzo(a)pyrene (BaP) concentrations. Parent BaP body burden was measured in sam...

Seabob shrimp Xiphopenaeus kroyeri is a marine species that lives in shallow waters of coastal environments, often impacted by polycyclic aromatic hydrocarbons (PAH) pollution. In the present study, seabob shrimp were exposed for 96h to benzo[a]pyrene (BaP) at the nominal concentrations of 100, 200, 400 and 800microg-L(-1). Animals of the control g...

O presente trabalho teve como objetivo avaliar os parâmetros hematológicos (número de eritrócitos, leucócitos, linfócitos, neutrófilos, monócitos, eosinófilos, basófilos e células granulocíticas especiais-CGE) de espécimes jovens de C. carpio submetidos a temperatura letal em condições de laboratorio. Foram utilizados um total de 17 peixes com tama...

O presente trabalho teve como objetivo avaliar o processo histopatológico de espécimes jovens de C. carpio submetidos a temperatura letal em condições de laboratório.. Foram utilizados um total de 17 peixes com tamanho médio de 9 ± 1.8 cm em comprimento total. Desse total, 12 espécimes foram submetidos à temperatura letal, com velocidade de aquecim...

Juvenile Florida pompanos (Trachinotus carolinus) were exposed to sublethal concentrations of naphthalene (0.15 ppm and 0.30 ppm) for 24 hours (acute) and 12 days (chronic). Control fish were maintained for the same periods in clean seawater and seawater with ethanol, which is a carrier to dissolve naphthalene. Gill samples from 56 fish were prepar...

The photo-induced toxicity of anthracene was investigated as the mortality in Antarctic shallow water amphipod, Gondogeneia antarctica, at different concentrations of anthracene and different periods of exposure to natural sunlight and artificial UVA and UVB radiations. When exposed to natural sunlight, animals contaminated in the dark and placed i...

The acute and sublethal chronic effects of sodium dodecyl sulphate (SDS) on the survival, metabolism, and growth of juveniles of Centropomus parallelus were investigated at three different salinities. Results of 96 h LC50 test showed that juveniles of C. parallelus were very sensitive to SDS in comparison to other species investigated. For each gro...

The micronucleus (Mn) and other kinds of erythrocyte nuclear abnormality (ENA) assays were used to assess the genotoxic potential of the seawater in front of the Brazilian Antarctic Research Station “Comandante Ferraz” (King George Island). In two consecutive summers, the fish Trematomus newnesi was exposed to the seawater in front of the fuel stor...

Effect of naphtalene on the metabolism of kingfish

Bioassays were performed to determine the level of 96h-LC50 of naphthalene in Trachinotus carolinus and to investigate the effects of different concentrations of naphthalene, after acute (50-min and 24-h) and chronic (12-day) exposures, on the physiological parameters of the species. The 96h-LC50 at 24 °C was 2.83 ppm of naphthalene. Fish after acu...

This paper provides the first quantitative information on mercury in soil, coastal sediment, and in characteristic organisms of terrestrial and shallow coastal marine ecosystems from Admiralty Bay (King George Island, Antarctica). As expected for a remote area, mercury content is low in abiotic components of the ecosystem, and probably similar to n...

The effect of salinity and time of exposure on metabolism and growth of juveniles of fat snook, Centropomus parallelus, were investigated. Food conversion efficiency (FCE), specific growth rate (SGR), oxygen consumption, ammonia excretion rate and O:N (oxygen/nitrogen) ratio were assessed on groups of fat-snook (mean weight 2 g) acclimated for 15-...

Avaliaram-se os efeitos de exposições aguadas a diferentes concentrações de LAS-C12 (0,5ppm, 1ppm, 2,5ppm e 5ppm) sobre a CL50, o metabolismo de rotina, metabolismo ativo e o tempo de natação até o cansaço de Mugil platanus, em uma dada velocidade de natação (15cm/seg). As taxas metabólicas e o tempo de natação até o cansaço foram estimados através...

The quantification of oxygen consumption and ammonia-N excretion rates is essential in determining energy requirements for development of larval invertebrates. In larval energetics, there is a need for accurate and uncomplicated techniques to quantify metabolic rates. A method for simultaneous measurements of oxygen and ammonia-N concentrations is...

Physiological responses of early postlarval shrimp Farfantepenaeus paulensis to different salinities were evaluated. Growth, net growth efficiency (K(2)), oxygen consumption, ammonia-N excretion, protein, lipid, carbohydrate, ash and energy content were determined in postlarval stages PL VI-VII and PL XIII-XV at 5 per thousand, 15 per thousand, 25...

Energy channeled into growth (P), metabolism maintenance (R), excretion (E) and exuvia (Ev) were quantified in feeding larval stages of Farfantepenaeuspaulensis reared under commercial practices at 26±1°C and 34±1‰ S. Dry weight, oxygen consumption, ammonia-N excretion and energy content were determined in protozoeal (PZ I–PZ III) and mysid (M I–M...

Dry weight (DW), oxygen consumption, ammonia-N excretion, proximate biochemical composition (total protein, carbohydrate, lipid, water and ash), and energy content (estimated from biochemical composition and by wet combustion) were determined in early developmental stages of cultured Farfantepenaeus paulensis. Pooled samples from embryonic, larval...

Avaliaram-se aspectos da bioenergética de H. steindachneri, em função do peso e da temperatura (15°C, 20°C e 26°C), através do consumo de oxigênio e da excreção de amônia de exemplares jovens coletados na região costeira de Ubatuba (23°30'S), SP, Brasil. Os valores de Q10 e das elevações a das regressões entre o consumo de oxigênio e o peso úmido n...

Avaliaram-se aspectos da bioenergética de H. steindachneri, em função do peso e da temperatura (15°C, 20°C e 26°C), através do consumo de oxigênio e da excreção de amônia de exemplares jovens coletados na região costeira de Ubatuba (23°30'S), SP, Brasil. Os valores de Q10 e das elevações a das regressões entre o consumo de oxigênio e o peso úmido n...

Proteinase (endopeptidase), trypsin-like and chymotrypsin-like activities were examined throughout the ontogenetic development of cultured Farfantepenaeus paulensis. Whole individuals from different larval and postlarval stages, and the hepatopancreas of adults were homogenized and assayed to quantify the enzyme activities of specific substrates. P...

O consumo de oxigênio de rotina e a excreção de amônia de Prionotus punctatus coletados na região de Ubatuba (22º30'S), SP, Brasil, foram medidos a 20ºC e 25ºC, para avaliar os gastos e perdas de energia com os processos metabólicos. Foram utilizados indivíduos variando de 1,00g a 88,47g e de 1,79g a 56,50g, em experimentos a 20ºC e 25ºC, respectiv...

Routine oxygen consumption and ammonia excretion were measured at 20ºC and 25ºC in the searobin Prionotus punctatus collected in Ubatuba region (22º30'S), SP, Brazil, in western South Atlantic, to investigate energy expenditure and losses through metabolic processes. IndividuaIs ranging from 1.00g to 88.47g and from 1.79g to 56.50g were used in exp...

Synthetic agents are important sources of pollution in Brazil, especially in the large urban centers. Of these, SDS has been largely employed as a reference substance in toxicity tests with aquatic organisms. Studies on the effect of this substance on the physiology and behavior of fish are scanty. In this study the metabolism and swimming capacity...

Synthetic agents are important sources of pollution in Brazil, especially in the large urban centers. Of these, SDS has been largely employed as a reference substance in toxicity tests with aquatic organisms. Studies on the effect of this substance on the physiology and behavior of fish are scanty. In this study the metabolism and swimming capacity...

Xiphopenaeus kroyeri (Heller, 1862) is one of the main contributors to the benthic megafauna biomass in São Paulo State littoral coast (Brazil). Routine respiration (R) and ammonia–N excretion (U) rates, defined as those measured during minimum but uncontrolled activity, were quantified in different-sized shrimps at stages C/D0, A/B, D1 and D2 of t...

Xiphopenaeus kroyeri (Heller, 1862) is important to the shrimp fishery in Brazil and is one of the main contributors to the benthic megafauna biomass in São Paulo State littoral coast. Routine metabolic (R) and ammonia-N (U) excretion rates, defined as those measured during minimum but uncontrolled activity, were quantified in this shrimp at five d...

O consumo de oxigênio de rotina de krll foi avaliado como uma forma de mensurar seu metabolismo e determinar os efeitos do tamanho, da temperatura e do jejum sobre o mesmo. Não foram detectadas diferenças significativas no consumo total do animal após 1, 3, 5 e 7 dias de jejum. As respostas do metabolismo de krill em função da variação da temperatu...

Routine oxygen consumption of krill was investigated as a general measure of its metabolism and assesses the effects of body size, temperature and starvation on the metabolism. No significant difference in whole animal consllmption was detected after 1,3,5 and 7 days of starvation. The response of metabolism of krill to temperature shows a zone of...

Mean and specific oxygen consumption and ammonia excretion were measured at 0ºC and 3ºC, in the Antarctic amphipod Waldeckia obesa collected in Admiralty Bay, King George Island, Antarctica. Experiments were carried out at the Brazilian Antarctic Station "Comandante Ferraz" and at the Laboratory of Polar Ecology of the Oceanographic Institute of Sã...

Realizaram-se estimativas, a 0ºC e a 3ºC, do consumo médio e específico de oxigênio e da excreção média e específica de amónia de anfípodas antárticos da espécie Waldeckia obesa, coletados na Baía do Almirantado, Ilha Rei George, Antártica. Os experimentos foram realizados na Estação Antártica Brasileira "Comandante Ferraz" e no Laboratório de Ecol...

Foram realizados experimentos para avaliar previamente o potencial tóxico de duas amostras de efluente derivado de petróleo a ser lançado no canal de S. Sebastião, através de um emissário submarino que está sendo construído no Terminal Marítimo "Almirante Barroso" (TEBAR). As amostras (denominadas Efluente-A e -B) foram fornecidas pela PETROBRÁS e...

The chromosomes of three species of fishes belonging to the family Ariidae -Netuma barba, Genidens genidens and Amis parkeri - were studied after conventional Giemsa staining. All three species have a diploid chromosome number of 2n = 56. The karyotype comprises 18 metacentric (m), 18 submetacentric (sm), 18 subtelocentric (st) and 2 telocentric (t...

Preliminary experiments were carried out to estimate the potential toxicity of an effluent derived from petroleum to be dumped into São Sebastião channel through a submarine emissary which is being built at the Maritime Terminal "Almirante Barroso" (TEBAR). Two simulated samples of this effluent (denominated A and B) were supplied by PETROBRÁS. The...

The chromosomes of three species of fishes belonging to the family Ariidae -Netuma barba, Genidens genidens and Amis parkeri - were studied after conventional Giemsa staining. All three species have a diploid chromosome number of 2n = 56. The karyotype comprises 18 metacentric (m), 18 submetacentric (sm), 18 subtelocentric (st) and 2 telocentric (t...

Mitotic and meiotic chromosomes of the Antarctic lysianassoid amphipod Waldeckia obesa are described. The modal chromosome number is n = 25 and 2n = 50. The potential applications of cytogenetical studies in this group are discussed.

Foram analisadas amostras de krill, Euphausia superba, coletadas em 18 estações na região da Passagem Drake-Estreito de Bransfield-oeste da Península Antártica para estudar as variações genéticas através de eletroforese de enzimas em gel de poliacrilamida. Dezenove loci enzimáticos foram analisados, dos quais quatorze (73,6%) apresentam variações a...

Foram analisadas amostras de krill, Euphausia superba, coletadas em 18 estações na região da Passagem Drake-Estreito de Bransfield-oeste da Península Antártica para estudar as variações genéticas através de eletroforese de enzimas em gel de poliacrilamida. Dezenove loci enzimáticos foram analisados, dos quais quatorze (73,6%) apresentam variações a...

Cathorops sp has the diploid number of 54 chromosomes. The karyotype comprises lm + sm, 6m, 6sm and 14st pairs. This result is compared with those of other species of Ariidae, mainly Ariopsis felis and Arius dussumieri, found in literature.Foram realizados estudos cromossômicos em 25 espécimens de Cathorops sp pelo método de air-drying. O número mo...

Cathorops sp has the diploid number of 54 chromosomes. The karyotype comprises lm + sm, 6m, 6sm and 14st pairs. This result is compared with those of other species of Ariidae, mainly Ariopsis felis and Arius dussumieri, found in literature.

Ten enzymatic systems of skeletic muscle of four species of marine catfishes were analysed by Polyacrylamide flat gel electrophoresis. Out of 17 loci examined, six were polymorphic. The heterozygosities varied from 0.0018 to 0.0755, the proportions of polymorphic loci, from 0.0588 to 0.2353 and the genetic identities I of Nei, from 0.242 to 0.822....

Cellulose acetate electrophoresis of eye-lens proteins and Polyacrylamide flat gel electrophoresis of skeletic muscle proteins of six species of marine catfishes were carried out. Genetic polymorphism only occured at one locus of the electropherograms of eye-lens of Cathorops spixii. Ontogenetic variations in the relative concentration of bands wer...

Cellulose acetate electrophoresis of eye-lens proteins and Polyacrylamide flat gel electrophoresis of skeletic muscle proteins of six species of marine catfishes were carried out. Genetic polymorphism only occured at one locus of the electropherograms of eye-lens of Cathorops spixii. Ontogenetic variations in the relative concentration of bands wer...

Ten enzymatic systems of skeletic muscle of four species of marine catfishes were analysed by Polyacrylamide flat gel electrophoresis. Out of 17 loci examined, six were polymorphic. The heterozygosities varied from 0.0018 to 0.0755, the proportions of polymorphic loci, from 0.0588 to 0.2353 and the genetic identities I of Nei, from 0.242 to 0.822....

Meiotic chromosomes of antarctic krill, Euphausia superba Dana, collected at Admiralty Bay, are described and the method used to obtain this genetic material is reported. Forty seven dividing meiotic nuclei at diakinesis and metaphase I from seminal glands of four males were examined, all with n= 17 bivalents. The results were compared with those o...

Foram identificadas as variações nos padrões eletroforéticos de proteínas gerais do cristalino de M. fumieri determinadas por diferenças genéticas entre indivíduos que ocupam a região entre Cabo Frio (23ºS) e Chuí (33ºS). Caracterizou-se quatro tipos de padrões e analisou-se a freqüência de ocorrência de indivíduos portadores de cada tipo nas popul...

The variations in the electrophoretic patterns of total eye-lens proteins from M, furnieri determined by genetic differences between individuals that occupy the region between Cabo Frio (23ºS) and Chui (33ºS) were identified. Four types of patterns were characterized and the frequencies of occurrence of specimen carrying each type in the specie's p...

1.1. The effects of salinity (0, 7, 14, 21, 28 and 35‰) on haemolymph osmotic, Ca2+, K+ and Na+ regulation in Macrobrachium carcinus were investigated.2.2. M. carcinus is a strong hyperosmotic regulator in fresh or low salinities (0–21‰), while at high salinities (28–35‰) it is a hypoconformer.3.3. Na+ haemolymph concentrations stayed fairly consta...

The chromosomes of two species of Antarctic fishes,Notothenia (Gobionotothen) gibberifrons andNotothenia (Notothenia) coriiceps neglecta, were prepared by the air-drying method at the Polish Antarctic Station “Henryk Arctowski” during the austral summer 1984–1985. ForN. (G.) gibberifrons the diploid number is2n = 46 consisting of 2 metacentric (m)...

É apresentado nesta nota experimento sobre o transporte do krill vivo da Antartica para o Brasil, realizado durante a V Expedição Brasileira à Antártica, verão 1986-1987. O sistema de aquário utilizado e a mortalidade do krill em função do tempo e de outros eventos durante o experimento são descritos. A importância deste experimento para o desenvol...

In this note an experiment on transportation of alive krill from the Antarctica to Brazil during the V Brazilian Expedition to the Antarcticas austral summer 1986-198?3 was reported. The aquarium system and the krill mortality in function of time and other events dur-lng the experiment were described. The importance of this experiment for the devel...

Foram analisadas as possíveis variações do padrão eletroforético de proteínas gerais do cristalino de Micropogonias furnieri (Desmarest, 1823), em função do desenvolvimento ontogenetico, do sexo e do ciclo de maturaçao das gonadas, com vistas a sua utilizaçao em estudos populacionais. Foram analisados, por eletroforese em acetato de celulose, crist...

A preliminary study was carried out on electropherograms of eye-lens, muscle proteins and zymograms of muscle esterases of ten Notothenia larseni, six Notothenia nudifrons and one lanternfish, Electrona antarctica. The fish were collected by the R/V "Prof. W. Besnard" of the Institute of Oceanography, University of São Paulo, during the First Brazi...

In population studies based on genetic-biochemical markers, variations induced by ontogenetic development, sex and gonad maturation act as a potencial source of bias. These aspects were analysed for patterns of eye-lens proteins of Micropogonias furnieri (Sciaenidae), following electrophoregrams obtained from 546 specimens ranging from 98 and 710 m...

A preliminary study was carried out on electropherograms of eye-lens, muscle proteins and zymograms of muscle esterases of ten Notothenia larseni, six Notothenia nudifrons and one lanternfish, Electrona antarctica. The fish were collected by the R/V "Prof. W. Besnard" of the Institute of Oceanography, University of São Paulo, during the First Brazi...

Estudou-se o cariótipo de Menticirrhus americanus (Linnaeus, 1758), peixes teleósteos da família Sciaenidae, coletados na região estuarino-lagunar de Cananéia, SP, Brasil. Foram realizadas preparações de cromossomos mitóticos e meióticos e ensaios de bandeamentos C e G. O número diplóide encontrado para a espécie foi de 2n = 48 cromossomos, tipo t...

Estudou-se o cariótipo de Micropogonias furnieri (Desmarest, 1823), peixe teleósteo da família Sciaenidae, coletado, na região estuarino-lagunar de Cananéia, SP, Brasil. Foram realizadas preparações de cromossomos mitóticos e meióticos e ensaios de bandamento C e G. O número diplóide encontrado para a espécie foi de 2n = 48 cromossomos tipo t (acro...

Eletroferogramas de músculo esquelético de Micropogonais furnieri de ambos os sexos, de comprimento total entre 112 e 718 mm, coletados na área entre Ubatuba (SP) e Florianópolis (SC) e na Lagoa dos Patos (RS), foram obtidos em membranas de acetato de celulose e as bandas de proteínas gerais visualizadas com Ponceau S. Os eletroferogramas foram cla...

No presente trabalho, foram analisados os efeitos de diferentes posições de coleta e de diferentes períodos de preservação das amostras a -15ºC sobre os eletroferogramas de proteínas gerais do músculo esquelético de Micropogonias furnieri, e as condições para extração e a eletroforese das proteínas foram estabelecidas . Foram comparados o poder de...

Effects of different positions of sampling and different periods of preservation of the samples at -15ºC on the general protein electropherograms of skeletic muscle ofMicropogpnias furnieri, were analysed and the conditions of extraction and electrophoresis of the proteins were established. Extraction and preservation powers of four solutions, dist...

Electropherograms of general proteins of skeletic muscle of male and female Micropogonias furnieri, ranging from 112 to 718 mm in total length, were obtained in cellulose acetate membranes visualized by Ponceau SQ The specimens were collect ed in the area between Ubatuba (SP) and Florianópolis (SC), and in Lagoa dos Patos (RS). The electropherogram...

Estudou-se o cariótipo de Micropogonias furnieri (Desmarest, 1823), peixe teleósteo da família Sciaenidae, coletado, na região estuarino-lagunar de Cananéia, SP, Brasil. Foram realizadas preparações de cromossomos mitóticos e meióticos e ensaios de bandamento C e G. O número diplóide encontrado para a espécie foi de 2n = 48 cromossomos tipo t (acro...

The chromosomes of M. americanus was studied. The diploid number is 48 acrocentric chromosomes and the haploid number is 24. The diploid DNA content of blood cell nucleus was measured. C- and G- banding techniques were tried.

Constatada a ocorrência de catarata em Micropogonias funieri, foram analisadas a distribuição e freqüência de exemplares portadores dentro da área ocupada pela população I da espécie (23ºS 29ºS), tanto em mar aberto até a isobata de 100 m, onde foram raros, como na região estuarino-lagunar de Cananéia (25º01'S), onde ocorreram em elevada freqüência...

The presence of specimens of Micropogonias funieri suffering from cataracts was observed in the area occupied by the population I (Vazzoler, 1971). The frequency and distribution of these specimens were analysed and the electrophoretic patterns of soluble eye-lens proteins were determined. This cataract is not of parasitic origin and was rare in sp...

The possibility of the use of electropherogrames of plasma proteins in polyacrylamide slab gel in the study of populations of marine cat-fishes was examined. A total of 176 samples of plasma from four species. Sciadeichtys luniscutis. Arius spixii, Genidens genidens and Netuma barbas was used. Inter-specific as well as intra-specific differences we...

The possibility of the use of electropherogrames of plasma proteins in polyacrylamide slab gel in the study of populations of marine cat-fishes was examined. A total of 176 samples of plasma from four species. Sciadeichtys luniscutis. Arius spixii, Genidens genidens and Netuma barbas was used. Inter-specific as well as intra-specific differences we...

An apparatus of the water tunnel type was constructed to facilitate simultaneous recordings of physiological information from swimming fish. The apparatus was connected with a large reservoir which made it possible to perform long-term experiments with controlled water temperature and current. Because the electrode leads and cannulae from an experi...

Differences by sex in the composition of plasma protein, its hormonal control and relation-ship between plasma protein and yolk protein of Ayu, Plecoglossus altivelis, were studied elec-trophoretically and immunologically. In immunoelectrophoresis, two new proteins (Fm-a and Fm-b) appeared in the female plasma with the commencement of vitellogenesi...

In order to clarify the endocrine control over the egg yolk formation, the effects of estrogenic substance (diethylstilbestrol), androgenic substance (methyltestosterone), thyroid hormone (powdered mammalian thyroid gland), and adrenocorticotropin on plasma lipid and lipoprotein in rainbow trout were examined. Levels of total lipid and lipoprotein...

Este trabalho teve como objetivo o estudo bioenergético de Xenomelaniris brasiliensis (Quoy & Gaimard), coletados na Zona de Arrebentação da região de Ubatuba, litoral norte de São Paulo. Foram estimados experimentalmente o metabolismo de rotina(Rr) e a exceção nitrogenada (Uend) em função da temperatura, salinidade, sexo e peso dos peixes através...

Os tensoativos sintéticos são importantes fontes de poluição no Brasil, principalmente nos grandes centros urbanos. O LAS-C12 é, dentre eles, amplamente empregado como principio ativo na produção de detergentes. No entanto, são poucos os estudosque estabelecem as influências dessa substância na fisiologia e no comportamento de peixes. O objeto dest...

Tese (Doutorado) apresentda ao Instituto Oceanográfico da Universidade de São Paulo, para obtenção do título de Doutor em Ciências, área de Oceanografia Biológica.