Fig. 2. Means and standard deviations (SD) of (a) Sr86:Ca43 (mmol.mol-1); and (b) Ba137:Ca43 rati... more Fig. 2. Means and standard deviations (SD) of (a) Sr86:Ca43 (mmol.mol-1); and (b) Ba137:Ca43 ratio (µmol.mol-1) in otoliths of the inner 20 measurements (core) and the outer 20 measurements (edge) of Mugil curema and M. liza caught in the Tramandaí River Estuary, Brazil. Different letters within a spruce stand denote significant differences between species (Mann-Whitney U test, p<0.05).
RESUMO. Tendo em vista que as populações de Jenynsia multidentata Jenyns, 1842 aparentemente atin... more RESUMO. Tendo em vista que as populações de Jenynsia multidentata Jenyns, 1842 aparentemente atingem maiores comprimentos na região estuarina da Lagoa dos Patos quando comparadas com o ambiente límnico adjacente, foi realizado um experimento ...
ü Utilizar botas de cano alto ou perneiras quando for a campo. Essa medida pode evitar até 80% do... more ü Utilizar botas de cano alto ou perneiras quando for a campo. Essa medida pode evitar até 80% dos acidentes. Usar luvas de couro nas atividades rurais e de jardinagem Verificar sapatos, botas, cobertores e sacos de dormir antes de usá-los. Manter limpas as áreas ao redor da casa, o paiol e as plantações, eliminando os montes de entulho, lixo, restos de alimento e folhagens. Não introduzir a mão em buracos, ocos de árvores ou vãos de pedras. Vedar frestas e buracos em paredes e assoalhos. Evitar plantas trepadeiras muito encostadas à casa cujas folhagens entrem pelo telhado ou mesmo pelo forro. Procurar controlar o número de roedores, comprometendo o ciclo biológico das serpentes venenosas que deles se alimentam. Não matar inimigos naturais das serpentes como emas, siriemas, gaviões, gambás, cobra-muçurana e até mesmo animais domésticos como galinhas e Gansos. Como prevenir-se? O que fazer em caso de acidente?
Usar calçados e luvas nas atividades rurais e de jardinagem. Examinar e sacudir calçados e roupas... more Usar calçados e luvas nas atividades rurais e de jardinagem. Examinar e sacudir calçados e roupas Pessoais, de cama e banho antes de usá-los. Afastar camas das paredes e evitar pendurar roupas fora de armários. Não acumular lixo orgânico, entulhos e materiais de construção. Limpar o domicílio, observando atrás de móveis, cortinas e quadros. Vedar frestas e buracos em paredes, assoalhos, forros e rodapés. Utilizar vedantes em portas, janelas e ralos. Aparar gramas e limpar locais próximos das casas, evitando acúmulo de folhagens. Manter o lixo em sacos plásticos bem fechados para não atrair baratas e moscas, principal item alimentar desses animais. Efetuar dedetizações periódicas. Tityus uruguayensis-Espécime coletado no Sul do País. Depósitos de lixo são locais propícios para o estabelecimento de aranhas e escorpiões.
The tilapia fileting industry generates large amounts of nutritionally significant waste material... more The tilapia fileting industry generates large amounts of nutritionally significant waste material, and the recovery of this material is important. The manufacture of restructured products from mechanically recovered fish meat (MRFM) obtained from tilapia fileting allows the use of proteins of high biological value that would otherwise be discharged into the environment. The objective of this study was to evaluate the effect of washing cycles (either one cycle or five cycles) and of the addition of tapioca starch (20% vs. a no-starch control) on the characteristics of surimi obtained from MRFM produced by the tilapia industry and destined for use in restructured products. To evaluate the quality attributes of the product, the structure of a surimi protein matrix and its relationship to selected physicochemical parameters and morphological characteristics was assessed. Both the number of washing cycles and the starch addition were found to influence the moisture, protein and lipid content of the MRFM surimi. Higher whiteness was found after five washing cycles. Because the tapioca starch acted as a stabilizer, the fat globules were more stable and well distributed, and an emulsion with better properties resulted. A homogeneous network of fat globules linked to the protein matrix by a layer of tapioca starch was formed. Another advantage of this approach is that tapioca starch is gluten free. This property is important for specific groups in the population, e.g., celiac-intolerant consumers.
Journal of the Marine Biological Association of the United Kingdom, 2011
Life-history characteristics such as growth, mortality, and size at sexual maturity of the seahor... more Life-history characteristics such as growth, mortality, and size at sexual maturity of the seahorseHippocampus reidiwere investigatedin situin north-eastern Brazil from August 2006 to July 2007. The von Bertalanffy growth constantKwas estimated at 1.195 year−1and L∞was set as 20 cm according to Taylor's relationship, using a Lmaxof 19 cm. The smallest male with a brood pouch and the smallest male with a fully mature pouch measured 9 and 9.5 cm (height), respectively, while the smallest mature female measured 8.8 cm. Appropriate reproductive individuals were recorded throughout the study, with peaks from May to November. The size of first effective reproduction (carrying embryos) was 12.4 cm for males, a value higher than previously reported. Estimated instantaneous rate of natural mortality ranged from 1.43 to 1.58 year−1. The estimated life span for the species was 30 months.
Fig. 6. Mugil liza. Ba137:Ca43 variations (µmol.mol-1) along transects from the core to the edge ... more Fig. 6. Mugil liza. Ba137:Ca43 variations (µmol.mol-1) along transects from the core to the edge of the otolith. Individuals were from the rio Tramandaí Estuary, Brazil. The horizontal gray bands between the Ba137:Ca43 ratios of 0.05 and 0.18 indicate migration in brackish waters (see M&M).
Fig. 5. Mugil curema. Ba137:Ca43 variations (µmol.mol-1) along transects from the core to the edg... more Fig. 5. Mugil curema. Ba137:Ca43 variations (µmol.mol-1) along transects from the core to the edge of the otolith. Individuals were from the rio Tramandaí Estuary, Brazil. The horizontal gray bands between the Ba137:Ca43 ratios of 0.05 and 0.18 indicate migration in brackish waters (see M&M).
Fig. 4. Otolith transects of Mugil liza measured by LA-ICP-MS from the core to the edge. Ba137:Ca... more Fig. 4. Otolith transects of Mugil liza measured by LA-ICP-MS from the core to the edge. Ba137:Ca43 (line) and Sr86:Ca43 (dashed line). The identification code and total length (mm) of each fish are indicated on the graph.
Fish-weirs are stationary traps set up by fishermen in places with a considerable tidal height va... more Fish-weirs are stationary traps set up by fishermen in places with a considerable tidal height variation. This work followed the harvesting of three fish-weirs off the coast of Piaui State, Brazil. Sampling was conducted at daytime and nighttime shifts, during six days of each month of the period from December. 2008 through November, 2009. A total of 117 fish species was registered, belonging to 41 families. There was no significant difference in mean catch weight between the dry and wet seasons, the daytime and nighttime shifts, and full moon and new moon phases. The annual catch per fish-weir was estimated as 1.2 ton, of which 79.0% were made up of commercially-important fish species for Piaui State.
We analysed the ratios Sr:Ca and Ba:Ca in the otoliths of 55 adults of the southern population of... more We analysed the ratios Sr:Ca and Ba:Ca in the otoliths of 55 adults of the southern population of Mugil liza in Brazil (Paraná to Rio Grande do Sul) to investigate its coastal zone use and migratory behaviour. All individual M. liza analysed had Sr:Ca and Ba:Ca values indicating that their birth was in the marine environment,which is consistent with the southern population migration to spawn in the ocean,. Juveniles exhibited at least three coastal use and recruitment strategies (contingents): the majority (89%) of M. liza juveniles migrated toward brackish water. They entered the estuary before completing the first year of life (64%) or after (25%) their first year of life. The remaining 11% did not appear to enter brackish or freshwater water as a nursery or at any point in their life cycle. Some adults returned to the estuary after spawning in the ocean but others (of both sexes) never returned to the estuary This article is protected by copyright. All rights reserved. after spawning, remaining in the marine environment. The pattern of juvenile habitat use in the Brazilian southern population of M. liza seems to be recurrent throughout the extent of its distribution as a consequence of the reproductive spawning aggregation behaviour, which mixes all contingents (with marine or estuarine preferences).
Fig. 2. Means and standard deviations (SD) of (a) Sr86:Ca43 (mmol.mol-1); and (b) Ba137:Ca43 rati... more Fig. 2. Means and standard deviations (SD) of (a) Sr86:Ca43 (mmol.mol-1); and (b) Ba137:Ca43 ratio (µmol.mol-1) in otoliths of the inner 20 measurements (core) and the outer 20 measurements (edge) of Mugil curema and M. liza caught in the Tramandaí River Estuary, Brazil. Different letters within a spruce stand denote significant differences between species (Mann-Whitney U test, p<0.05).
RESUMO. Tendo em vista que as populações de Jenynsia multidentata Jenyns, 1842 aparentemente atin... more RESUMO. Tendo em vista que as populações de Jenynsia multidentata Jenyns, 1842 aparentemente atingem maiores comprimentos na região estuarina da Lagoa dos Patos quando comparadas com o ambiente límnico adjacente, foi realizado um experimento ...
ü Utilizar botas de cano alto ou perneiras quando for a campo. Essa medida pode evitar até 80% do... more ü Utilizar botas de cano alto ou perneiras quando for a campo. Essa medida pode evitar até 80% dos acidentes. Usar luvas de couro nas atividades rurais e de jardinagem Verificar sapatos, botas, cobertores e sacos de dormir antes de usá-los. Manter limpas as áreas ao redor da casa, o paiol e as plantações, eliminando os montes de entulho, lixo, restos de alimento e folhagens. Não introduzir a mão em buracos, ocos de árvores ou vãos de pedras. Vedar frestas e buracos em paredes e assoalhos. Evitar plantas trepadeiras muito encostadas à casa cujas folhagens entrem pelo telhado ou mesmo pelo forro. Procurar controlar o número de roedores, comprometendo o ciclo biológico das serpentes venenosas que deles se alimentam. Não matar inimigos naturais das serpentes como emas, siriemas, gaviões, gambás, cobra-muçurana e até mesmo animais domésticos como galinhas e Gansos. Como prevenir-se? O que fazer em caso de acidente?
Usar calçados e luvas nas atividades rurais e de jardinagem. Examinar e sacudir calçados e roupas... more Usar calçados e luvas nas atividades rurais e de jardinagem. Examinar e sacudir calçados e roupas Pessoais, de cama e banho antes de usá-los. Afastar camas das paredes e evitar pendurar roupas fora de armários. Não acumular lixo orgânico, entulhos e materiais de construção. Limpar o domicílio, observando atrás de móveis, cortinas e quadros. Vedar frestas e buracos em paredes, assoalhos, forros e rodapés. Utilizar vedantes em portas, janelas e ralos. Aparar gramas e limpar locais próximos das casas, evitando acúmulo de folhagens. Manter o lixo em sacos plásticos bem fechados para não atrair baratas e moscas, principal item alimentar desses animais. Efetuar dedetizações periódicas. Tityus uruguayensis-Espécime coletado no Sul do País. Depósitos de lixo são locais propícios para o estabelecimento de aranhas e escorpiões.
The tilapia fileting industry generates large amounts of nutritionally significant waste material... more The tilapia fileting industry generates large amounts of nutritionally significant waste material, and the recovery of this material is important. The manufacture of restructured products from mechanically recovered fish meat (MRFM) obtained from tilapia fileting allows the use of proteins of high biological value that would otherwise be discharged into the environment. The objective of this study was to evaluate the effect of washing cycles (either one cycle or five cycles) and of the addition of tapioca starch (20% vs. a no-starch control) on the characteristics of surimi obtained from MRFM produced by the tilapia industry and destined for use in restructured products. To evaluate the quality attributes of the product, the structure of a surimi protein matrix and its relationship to selected physicochemical parameters and morphological characteristics was assessed. Both the number of washing cycles and the starch addition were found to influence the moisture, protein and lipid content of the MRFM surimi. Higher whiteness was found after five washing cycles. Because the tapioca starch acted as a stabilizer, the fat globules were more stable and well distributed, and an emulsion with better properties resulted. A homogeneous network of fat globules linked to the protein matrix by a layer of tapioca starch was formed. Another advantage of this approach is that tapioca starch is gluten free. This property is important for specific groups in the population, e.g., celiac-intolerant consumers.
Journal of the Marine Biological Association of the United Kingdom, 2011
Life-history characteristics such as growth, mortality, and size at sexual maturity of the seahor... more Life-history characteristics such as growth, mortality, and size at sexual maturity of the seahorseHippocampus reidiwere investigatedin situin north-eastern Brazil from August 2006 to July 2007. The von Bertalanffy growth constantKwas estimated at 1.195 year−1and L∞was set as 20 cm according to Taylor's relationship, using a Lmaxof 19 cm. The smallest male with a brood pouch and the smallest male with a fully mature pouch measured 9 and 9.5 cm (height), respectively, while the smallest mature female measured 8.8 cm. Appropriate reproductive individuals were recorded throughout the study, with peaks from May to November. The size of first effective reproduction (carrying embryos) was 12.4 cm for males, a value higher than previously reported. Estimated instantaneous rate of natural mortality ranged from 1.43 to 1.58 year−1. The estimated life span for the species was 30 months.
Fig. 6. Mugil liza. Ba137:Ca43 variations (µmol.mol-1) along transects from the core to the edge ... more Fig. 6. Mugil liza. Ba137:Ca43 variations (µmol.mol-1) along transects from the core to the edge of the otolith. Individuals were from the rio Tramandaí Estuary, Brazil. The horizontal gray bands between the Ba137:Ca43 ratios of 0.05 and 0.18 indicate migration in brackish waters (see M&M).
Fig. 5. Mugil curema. Ba137:Ca43 variations (µmol.mol-1) along transects from the core to the edg... more Fig. 5. Mugil curema. Ba137:Ca43 variations (µmol.mol-1) along transects from the core to the edge of the otolith. Individuals were from the rio Tramandaí Estuary, Brazil. The horizontal gray bands between the Ba137:Ca43 ratios of 0.05 and 0.18 indicate migration in brackish waters (see M&M).
Fig. 4. Otolith transects of Mugil liza measured by LA-ICP-MS from the core to the edge. Ba137:Ca... more Fig. 4. Otolith transects of Mugil liza measured by LA-ICP-MS from the core to the edge. Ba137:Ca43 (line) and Sr86:Ca43 (dashed line). The identification code and total length (mm) of each fish are indicated on the graph.
Fish-weirs are stationary traps set up by fishermen in places with a considerable tidal height va... more Fish-weirs are stationary traps set up by fishermen in places with a considerable tidal height variation. This work followed the harvesting of three fish-weirs off the coast of Piaui State, Brazil. Sampling was conducted at daytime and nighttime shifts, during six days of each month of the period from December. 2008 through November, 2009. A total of 117 fish species was registered, belonging to 41 families. There was no significant difference in mean catch weight between the dry and wet seasons, the daytime and nighttime shifts, and full moon and new moon phases. The annual catch per fish-weir was estimated as 1.2 ton, of which 79.0% were made up of commercially-important fish species for Piaui State.
We analysed the ratios Sr:Ca and Ba:Ca in the otoliths of 55 adults of the southern population of... more We analysed the ratios Sr:Ca and Ba:Ca in the otoliths of 55 adults of the southern population of Mugil liza in Brazil (Paraná to Rio Grande do Sul) to investigate its coastal zone use and migratory behaviour. All individual M. liza analysed had Sr:Ca and Ba:Ca values indicating that their birth was in the marine environment,which is consistent with the southern population migration to spawn in the ocean,. Juveniles exhibited at least three coastal use and recruitment strategies (contingents): the majority (89%) of M. liza juveniles migrated toward brackish water. They entered the estuary before completing the first year of life (64%) or after (25%) their first year of life. The remaining 11% did not appear to enter brackish or freshwater water as a nursery or at any point in their life cycle. Some adults returned to the estuary after spawning in the ocean but others (of both sexes) never returned to the estuary This article is protected by copyright. All rights reserved. after spawning, remaining in the marine environment. The pattern of juvenile habitat use in the Brazilian southern population of M. liza seems to be recurrent throughout the extent of its distribution as a consequence of the reproductive spawning aggregation behaviour, which mixes all contingents (with marine or estuarine preferences).
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