Orientador: Irene Bastos Franceschini Vicentini / Coorientador: Karina Ribeiro / Banca: Maíra Aparecida Stefanini / Banca: Bruno César Schimming / Resumo: A carcinicultura de água doce é uma forma de produção de crustáceos com baixo impacto ambiental. A espécie brasileira Macrobrachium amazonicum tem grande potencial de cultivo e alguns aspectos da sua biologia vêm sendo estudados na última década. O hepatoâncreas (HP) é um órgão chave na digestão de crustáceos. Este órgão está composto por túbulos hepatopancreáticos, cujo epitélio apresenta 5 tipos celulares envolvidos na digestão do alimento. O estômago, por sua vez, apresenta associação íntima ao hepatopâncreas no processo de digestão. Assim o objetivo desse estudo foi avaliar a dinâmica celular do epitélio hepatopancreático nos diferentes períodos de pós alimentação (PA), assim como avaliar as relações de peso relativo ao corpo entre estômago e hepatopâncreas. Para tanto o hepatopâncreas e o estômago de juvenis foram coletados nos tempos de PA de 1h, 7h, 13h, e assim sucessivamente somando-se 6 horas a cada intervalo de coleta, até 121h. O Índice Hepatossomático (IHS) e o Índice Gastrossomático (IGaS) foram aferidos. Os fragmentos de HP foram fixados em Bouin, processados para rotina de inclusão em historresina, e corados com Hematoxilina/Eosina. Após análise, foram observados períodos com elevado IHS seguidos de períodos com baixo IHS ocorridos em todos os 5 dias de observação, assim como foram observados ciclos imediatamente inversos no estômago, com relação ao hepatopâncreas. Nos momentos que correspondem ao elevado IHS é possível observar grande acúmulo de células B, com extrema vacuolização, o que indica digestão intracelular. Nos momentos com baixo IHS é evidente o grande número de células F que produzem enzimas digestivas, e células R que estocam reservas, sugerindo baixa atividade digestiva. Após 24 h de PA, provavelmente os restos não... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Freshwater shrimp farming is a form of shellfish production with low environmental impact. Macrobrachium amazonicum, brazilian native species, has great potential for cultivation and some aspects of its biology, especially the digestive system, have been studied in the last decade. The hepatpncreas (HP) is a key organ in the digestion of crustaceans. This organ is composed of hepatopancreatic tubules, which present 5 epithelial cell types involved in the digestion of food. The stomach, in turn, presents intimate association with hepatopancreas in the digestion process. Thus the aim of this study was to evaluate the dynamics of the hepatopancreatic cells in different periods after feeding (AF), as well as evaluate the relationships between stomachsomatic and hepatossomatic indeces. For both the hepatopancreas and stomach of juveniles were collected in times of AF 1h, 7h, 13h, and so adding six hours to each collection interval until 121h. Hepatosomatic (HSI) and gastrossomatic (GaSI) indices were measured. HP fragments were fixed in Bouin, processed for inclusion in hystoresin, and stained with hematoxylin/eosin. After analysis, it were observed periods with high HIS followed by periods of low HIS in all five days of observation. IGaS and HIS presented opposing curves. In moments which correspond to the high HIS is possible to observe accumulation of B cells with extreme vacuolization, indicating intracellular digestion according to the literature. In moments of low HIS is evident the large number of F cells that produce digestive enzymes, and cells that accumulate reserves, suggesting low digestive activity. After 24h AF, probably undigested food in HP returns to stomach, and are then distributed to HP again. Thus, the morphological characteristics did not differ at different times of elevated HIS, and the same... (Complete abstract click electronic access below) / Mestre

Thesis (Ph. D.)--University of Missouri-Columbia, 1997. / Typescript. Vita. Includes bibliographical references (leaves 308-326). Also available on the Internet.

Thesis (Ph. D.)--University of Missouri-Columbia, 1997. / Typescript. Vita. Includes bibliographical references (leaves 308-326). Also available on the Internet.

Thesis (M. Phil.)--University of Hong Kong, 1999. / Includes bibliographical references (leaves 104-118).

Thesis (Ph. D.)--University of Hong Kong, 1989.

Environmental problems have now achieved such a dimension which becomes a challenge to human survival. Taking into account that nature is the necessary and indispensable support of modern economy as well as of the future generation, sustainability must conciliate both the economical development and the preservation of the environment. Thus, only recently has been noticed that the balance of the ecosystems and the development of the economy are inter-related facts. In principle, any human activity which aims at exploiting the environmental resources impacts on the environment, among these activities is the production of food. One of the in-water food production is the technique of raising shrimp in captivity, well developed in many countries now. Shrimp raising, besides being an alternative to the supplying of the increasing demand of shrimp in the world, has become an important socioeconomic activity which positive and negative effects have been remarkably noticed in the regions of its settlement, among which the swamp areas are enhanced. On these grounds, and having in mind the three factors that founds the sustainable development: economically efficient, environmentally correct and socially fair, as well as the favorable and unfavorable concerns related to shrimp raising, a social-environmental analysis of this activity was held in the present work, characterizing the damages which were caused and identifying possible effects on the quality of life improvement of the community involved in this kind of activity. The research found the existence of an economic-based view from the social players involved in shrimp raising, where the perception of progress is privileged against the environmental an social aspects. In this way, it could be proved that the degree of perception of the society and of the community related do not evolve owing to the low level of education in the municipality, which impairs a participative management of the natural resources, thus generating an untrue feeling of development. / Os problemas ambientais atingiram na atualidade uma proporção que representa um verdadeiro desafio à sobrevivência humana. Considerando que a natureza é a base necessária e indispensável da economia moderna, bem como da vida das gerações futuras, a sustentabilidade deve conciliar o desenvolvimento econômico com a preservação do meio ambiente. Dessa forma, só recentemente percebeu-se que o equilíbrio dos ecossistemas e o desenvolvimento da economia são fatos inter-relacionados. A princípio, qualquer atividade antrópica que visa à exploração de recursos ambientais causa impactos ao meio ambiente, dentre essas atividades está a produção de alimentos. Um dos cultivos alimentares aquáticos é a carcinicultura, técnica de criação de camarões em cativeiro, muito desenvolvida atualmente, em vários países do mundo. A carcinicultura marinha, além de representar uma alternativa para o atendimento da crescente demanda mundial por camarões, vem se constituindo numa importante atividade sócio econômica, cujos efeitos positivos e negativos têm se refletido sobremaneira nas regiões de sua implantação, dentre as quais destacam-se as regiões de manguezais. Diante disso e tendo em vista os três pilares que embasam o desenvolvimento sustentável: economicamente eficiente, ambientalmente prudente e socialmente justo, bem como as opiniões favoráveis e desfavoráveis em relação à carcinicultura, foi realizada no presente trabalho uma caracterização sócio-ambiental dessa atividade, identificando os danos causados e os possíveis reflexos de melhoria na qualidade de vida da comunidade envolvida por esse ramo de atividade. Na pesquisa, foram abordados os efeitos sócio-ambientais da carcinicultura no município de Barra de Santo Antônio, estado de Alagoas, enfocando empreendimento carcinicultor, implantado no referido município, em que foram abordados os aspectos ambientais, de geração de emprego e renda e de geração de tributos municipais. O trabalho identifica ainda os atores sociais envolvidos direta e indiretamente na carcinicultura e a atuação dos órgãos ambientais em relação ao licenciamento e à fiscalização da atividade. A pesquisa concluiu que existe uma visão economicista dos atores sociais envolvidos com a carcinicultura, onde a percepção de progresso é privilegiada em detrimento dos aspectos ambientais e sociais. Nesse sentido pôde-se comprovar que o grau de percepção da sociedade e da comunidade impactada não evolui, devido ao baixo nível de escolaridade no município, o que impede uma gestão participativa dos recursos naturais, gerando uma falsa sensação de desenvolvimento.

Acute hepatopancreatic necrosis disease (AHPND) is an emerging bacterial infection in shrimp that has been widespread across the major world shrimp producing countries since 2009. AHPND epizootics have resulted in a huge loss of global shrimp production, similar to that caused by white spot disease in the 1990’s. The epizootiological understanding of the spread of AHPND is still in its early stages, however, and most of the currently published research findings are based on experimental studies that may struggle to capture the potential for disease transmission at the country scale. The main aim of this research, therefore, is to develop epizootiological tools to study AHPND transmission between shrimp farming sites. Some tools used in this research have already been applied to shrimp epizoology, but others are used here for the first time to evaluate the spread of shrimp diseases. According to an epizootiological survey of AHPND in Thailand (Chapter 3), the first case of AHPND in the country was in eastern shrimp farms in January 2012. The disease was then transmitted to the south in December 2012. The results obtained from interviews, undertaken with 143 sample farms were stratified by three farm-scales (large, medium and small) and two locations (east and south). Both the southern location and large-scale farming were associated with a delay in AHPND onset compared with the eastern location and small- and medium-scale farming. The 24 risk factors (mostly related to farming management practices) for AHPND were investigated in a cross-sectional study (Chapter 3). This allowed the development of an AHPND decision tree for defining cases (diseased farms) and controls (non-diseased farms) because at the time of the study AHPND was a disease of unknown etiology. Results of univariate and unconditional logistic regression models indicated that two farming management practices related to the onset of AHPND. First, the absence of pond harrowing before shrimp stocking increased the risk of AHPND occurrence with an odds ratio () of 3.9 (95 % CI 1.3–12.6; P‑value = 0.01), whereas earthen ponds decreased the risk of AHPND with an of 0.25 (95 % CI 0.06–0.8; P‑value = 0.02). These findings imply that good farming management practices, such as pond-bottom harrowing, which are a common practice of shrimp farming in earthen ponds, may contribute to overcoming AHPND infection at farm level. For the purposes of disease surveillance and control, the structure of the live shrimp movement network within Thailand (LSMN) was modelled, which demonstrated the high potential for site-to-site disease spread (Chapter 4). Real network data was recorded over a 13-month period from March 2013 to March 2014 by the Thailand Department of Fisheries. After data validation, c. 74 400 repeated connections between 13 801 shrimp farming sites were retained. 77 % of the total connections were inter-province movements; the remaining connections were intra-province movements (23 %). The results demonstrated that the LSMN had properties that both aided and hindered disease spread (Chapter 4). For hindering transmission, the correlation between and degrees was weakly positive, i.e. it suggests that sites with a high risk of catching disease posed a low risk for transmitting the disease (assuming solely network spread), and the LSMN showed disassortative mixing, i.e. a low preference for connections joining sites with high degree linked to connections with high degree. However, there were low values for mean shortest path length and clustering. The latter characteristics tend to be associated with the potential for disease epidemics. Moreover, the LSMN displayed the power-law in both and degree distributions with the exponents 2.87 and 2.17, respectively. The presence of power-law distributions indicates that most sites in the LSMN have a small number of connections, while a few sites have large numbers of connections. These findings not only contribute to a better understanding of disease spread between sites, therefore, but also reveal the importance of targeted disease surveillance and control, due to the detection of scale-free properties in the LSMN. Chapter 5, therefore, examined the effectiveness of targeted disease surveillance and control in respect to reducing the potential size of epizootics in the LSMN. The study untilised network approaches to identify high-risk connections, whose removal from the network could reduce epizootics. Five disease-control algorithms were developed for the comparison: four of these algorithms were based on centrality measures to represent targeted approaches, with a non-targeted approach as a control. With the targeted approaches, technically admissible centrality measures were considered: the betweenness (the number of shortest paths that go through connections in a network), connection weight (the frequency of repeated connections between a site pair), eigenvector (considering the degree centralities of all neighbouring sites connected to a specified site), and subnet-crossing (prioritising connections that links two different subnetworks). The results showed that the estimated epizootic sizes were smaller when an optimal targeted approach was applied, compared with the random targeting of high-risk connections. This optimal targeted approach can be used to prioritise targets in the context of establishing disease surveillance and control programmes. With complex modes of disease transmission (i.e. long-distance transmission like via live shrimp movement, and local transmission), an compartmental, individual-based epizootic model was constructed for AHPND (Chapter 6). The modelling uncovered the seasonality of AHPND epizootics in Thailand, which were found likely to occur between April and August (during the hot and rainy seasons of Thailand). Based on two movement types, intra-province movements were a small proportion of connections, and they alone could cause a small AHPND epizootic. The main pathway for AHPND spread is therefore long-distance transmission and regulators need to increase the efficacy of testing for diseases in farmed shrimp before movements and improve the conduct of routine monitoring for diseases. The implementation of these biosecurity practices was modelled by changing the values of the long-distance transmission rate. The model demonstrated that high levels of biosecurity on live shrimp movements (1) led to a decrease in the potential size of epizootics in Thai shrimp farming. Moreover, the potential size of epizootics was also decreased when AHPND spread was modelled with a decreased value for the local transmission rate. Hence, not only did the model predict AHPND epizootic dynamics stochastically, but it also assessed biosecurity enhancement, allowing the design of effective prevention programmes. In brief, this thesis develops tools for the systematic epizootiological study of AHPND transmission in Thai shrimp farming and demonstrates that: (1) at farm level, current Thai shrimp farming should enhance biosecurity systems even in larger businesses, (2) at country level, targeted disease control strategies are required to establish disease surveillance and control measures. Although the epizootiological tools used here mainly evaluate the spread of AHPND in shrimp farming sites, they could be adapted to other infectious diseases or other farming sectors, such as the current spread of tilapia lake virus in Nile tilapia farms.

Made available in DSpace on 2014-06-11T19:22:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-02-25Bitstream added on 2014-06-13T20:29:30Z : No. of bitstreams: 1 picolo_jm_me_jabo_parcial.pdf: 145894 bytes, checksum: 31cf1331c726972e83c1f4f6d8b258ae (MD5) Bitstreams deleted on 2015-06-25T13:01:17Z: picolo_jm_me_jabo_parcial.pdf,. Added 1 bitstream(s) on 2015-06-25T13:03:31Z : No. of bitstreams: 1 000717274_20160225.pdf: 133769 bytes, checksum: 35079b4381ada54f93cbdeff84d6258b (MD5) Bitstreams deleted on 2016-02-26T14:03:53Z: 000717274_20160225.pdf,. Added 1 bitstream(s) on 2016-02-26T14:04:48Z : No. of bitstreams: 1 000717274.pdf: 836318 bytes, checksum: 500516d68a4fd1ca42dfa1aa79c1bc9f (MD5) / A carcinicultura de água doce é uma forma de produção de crustáceos com baixo impacto ambiental. A espécie brasileira Macrobrachium amazonicum tem grande potencial de cultivo e alguns aspectos da sua biologia vêm sendo estudados na última década. O hepatoâncreas (HP) é um órgão chave na digestão de crustáceos. Este órgão está composto por túbulos hepatopancreáticos, cujo epitélio apresenta 5 tipos celulares envolvidos na digestão do alimento. O estômago, por sua vez, apresenta associação íntima ao hepatopâncreas no processo de digestão. Assim o objetivo desse estudo foi avaliar a dinâmica celular do epitélio hepatopancreático nos diferentes períodos de pós alimentação (PA), assim como avaliar as relações de peso relativo ao corpo entre estômago e hepatopâncreas. Para tanto o hepatopâncreas e o estômago de juvenis foram coletados nos tempos de PA de 1h, 7h, 13h, e assim sucessivamente somando-se 6 horas a cada intervalo de coleta, até 121h. O Índice Hepatossomático (IHS) e o Índice Gastrossomático (IGaS) foram aferidos. Os fragmentos de HP foram fixados em Bouin, processados para rotina de inclusão em historresina, e corados com Hematoxilina/Eosina. Após análise, foram observados períodos com elevado IHS seguidos de períodos com baixo IHS ocorridos em todos os 5 dias de observação, assim como foram observados ciclos imediatamente inversos no estômago, com relação ao hepatopâncreas. Nos momentos que correspondem ao elevado IHS é possível observar grande acúmulo de células B, com extrema vacuolização, o que indica digestão intracelular. Nos momentos com baixo IHS é evidente o grande número de células F que produzem enzimas digestivas, e células R que estocam reservas, sugerindo baixa atividade digestiva. Após 24 h de PA, provavelmente os restos não... / Freshwater shrimp farming is a form of shellfish production with low environmental impact. Macrobrachium amazonicum, brazilian native species, has great potential for cultivation and some aspects of its biology, especially the digestive system, have been studied in the last decade. The hepatpncreas (HP) is a key organ in the digestion of crustaceans. This organ is composed of hepatopancreatic tubules, which present 5 epithelial cell types involved in the digestion of food. The stomach, in turn, presents intimate association with hepatopancreas in the digestion process. Thus the aim of this study was to evaluate the dynamics of the hepatopancreatic cells in different periods after feeding (AF), as well as evaluate the relationships between stomachsomatic and hepatossomatic indeces. For both the hepatopancreas and stomach of juveniles were collected in times of AF 1h, 7h, 13h, and so adding six hours to each collection interval until 121h. Hepatosomatic (HSI) and gastrossomatic (GaSI) indices were measured. HP fragments were fixed in Bouin, processed for inclusion in hystoresin, and stained with hematoxylin/eosin. After analysis, it were observed periods with high HIS followed by periods of low HIS in all five days of observation. IGaS and HIS presented opposing curves. In moments which correspond to the high HIS is possible to observe accumulation of B cells with extreme vacuolization, indicating intracellular digestion according to the literature. In moments of low HIS is evident the large number of F cells that produce digestive enzymes, and cells that accumulate reserves, suggesting low digestive activity. After 24h AF, probably undigested food in HP returns to stomach, and are then distributed to HP again. Thus, the morphological characteristics did not differ at different times of elevated HIS, and the same... (Complete abstract click electronic access below)

Made available in DSpace on 2015-05-07T15:09:32Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 890865 bytes, checksum: 6566612853acd8715800bf2697d16757 (MD5) Previous issue date: 2009-06-09 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Due to the environmental problems that devastate the planet, threatening the quality of life, is essential that the Environmental Education, based in knowledges, values and behaviors allows a critical, responsible and effective participation in minimizing the environmental issues and in the management of the environment. In this perspective, this research aimed to investigate the importance of the practice of Environmental Education in the project entitled "Integrated and Sustainable Exploitation of the Jandaia dam in a Solidarity Economy regime", of the Centre of Human, Social and Agrarian Studies (CHSAS) - Campus III, Bananeiras-PB. The inquiry was based on a quanti-qualitative methodology, using for data collection, interviews with 20 community members, a questionnaire applied to 8 extensionists and a documentary analysis of the reports of accountability to Petrobrás, financier organ of the Project.. As an object of study, we tried to detect the relationships, actions and interventions of the extensionists and the benefits provided to the community in social, environmental and economical aspects. Although 66.7% of the extensionists have claimed to provide technical support to the project, 75% have recognized the social merit, 46.5% had understood environmental education in a conception of actions to minimize social and economical inequalities and also to contribute to citizenship, autonomy and social justice and 67% had said that they had prepared the community to maintain the project in a sustainable way without the interference of the extensionists, while interviewing the community members, it was noticed that 75% was best fed as the project was in progress and recognized it as an opportunity to improve economically, however they denounced that they were not technically prepared to keep it; 50% could not answer what environment would be, and when asked about whether any environmental agency guided their rural activities, 60% of them answered "No . It was found that despite the proposal to direct the academical extension as an useful work, in an emancipatory approach starting from the strengthening of the most needy population, through the activities of pisciculture, shrimp culture and controlled fishing in harmony with the Environmental Legislation, the project presented itself as one more frustrating alternative, product of the non execution with its proposal of social, environment and economical inclusion. 9 This way, this work intends to invite the University to supervise extension projects, in order to avoid the non compromising of this institution as an agent of change. / Diante dos problemas ambientais que assolam o planeta, ameaçando a qualidade de vida, é imprescindível, a Educação Ambiental, alicerçada em conhecimentos, valores e comportamentos que permitam uma participação crítica, responsável e eficaz na minimização das questões ambientais e na gerência do meio ambiente. Nesta perspectiva, este trabalho de pesquisa visou investigar a importância da prática da Educação Ambiental no Projeto intitulado: Exploração Sustentada e Integrada da Barragem Jandaia em Regime de Economia Solidária , pertencente ao Centro de Ciências Humanas, Sociais e Agrárias (CCHSA) Campus III, Bananeiras- PB. Foi construída com base em uma metodologia quanti-qualitativa, utilizando-se para a coleta de dados, entrevista com 20 membros da comunidade e questionário aplicado aos 8 extensionistas e análise documental dos relatórios de prestação de conta à Petrobrás, órgão financiador do Projeto. Como objeto de estudo, buscou-se detectar as relações, ações e intervenções dos extensionistas e os benefícios proporcionados à comunidade nos aspectos socioambientais e econômicos. Apesar de 66,7% dos extensionistas terem alegado prestar assistência técnica ao projeto, 75% reconhecerem o seu mérito social, 46,5% entenderem Educação Ambiental numa concepção de ações para minimizar as desigualdades sociais, econômicas e contribuir para cidadania, autonomia e justiça social e 66,7% afirmarem ter preparado a comunidade para manter o projeto de forma sustentável sem a interferência dos extensionistas; ao entrevistar os membros da comunidade, constatou-se que 75% se alimentavam melhor enquanto o projeto estava em andamento e o reconheciam como uma oportunidade de melhorar economicamente, mas denunciaram não terem sido preparados tecnicamente para mantê-lo; 50% não souberam responder o que seria meio ambiente e ao serem perguntados sobre se algum órgão ambiental orientava suas atividades rurais, 60% responderam que Não. Verificou-se que apesar da proposta de direcionar a extensão universitária como trabalho útil, numa abordagem emancipatória, a partir do fortalecimento da população mais carente, através das atividades de Piscicultura, Carcinicultura e Pesca Controlada em consonância com a Legislação Ambiental, o projeto se apresentou como mais uma alternativa frustrante, produto do não cumprimento com sua proposta de inclusão socioambiental e econômica. Desta forma, este trabalho 7 pretende convidar a Universidade a fiscalizar projetos de extensão, a fim de evitar o não comprometimento desta instituição como agente de mudança.

Orientador: Rogério Caetano da Costa / Banca: Antonio Leão Castilho / Banca: Mariana Terossi Rodrigues Mariano / Resumo: O presente trabalho averiguou os efeitos da ressurgência de Cabo Frio sobre a dinâmica e a estrutura genética populacional do camarão Artemesia longinaris Spence Bate, 1888. As coletas foram realizadas em duas regiões do sudeste brasileiro, sendo uma localizada ao norte da ressurgência de Cabo Frio (Macaé - RJ) e outra ao sul (Ubatuba - SP). Os objetivos foram comparar a abundância, o tamanho médio dos indivíduos, a proporção sexual, o tamanho da maturidade sexual (CL50), o período reprodutivo, o recrutamento juvenil, o crescimento e a longevidade em ambas as áreas. Foram capturados 51221 indivíduos em Macaé e 757 em Ubatuba. Apenas para as fêmeas foi constada diferença significativa no tamanho médio dos indivíduos entre as duas regiões, com o maior tamanho sendo verificado em Macaé (15,9 ± 3,10 mm) e contrapondo Ubatuba, com 14,2 ± 2,55 mm. Em ambas as regiões, a proporção sexual foi desviada em favor das fêmeas. Os valores de CC50 foram de 12,2 mm para os machos e 15,7 mm para as fêmeas em Macaé, e 12,0 mm para os machos e 13,8 mm para as fêmeas em Ubatuba. Em ambas as áreas a reprodução contínua foi constatada, porém dois picos foram verificados, sendo em Macaé um no inverno e no verão e, em Ubatuba,um na primavera e outro no verão . O recrutamento juvenil também foi contínuo com dois picos para as duas regiões, sendo um na primavera e outro no final do verão em Macaé, e um na primavera e outro no início do outono em Ubatuba. As estimativas dos parâmetros de crescimento em Macaé foram de CC∞ = 20,07 mm; k = 0,01/dia; t0 = 0,403 para os machos e de CC∞ = 26,93 mm; k = 0,007/dia; t0 = 0,338 para as fêmeas. Já para Ubatuba, as estimativas foram de CC∞ = 16,57 mm; k = 0,016/dia; t0 = 0,44 para os machos e CC∞ = 20,59 mm; k = 0,012/dia; t0 = 0,116 para... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The present work investigated the effects of upwelling from Cabo Frio on the dynamics and on the population genetic structure of the shrimp Artemesia longinaris Spence Bate, 1888. Samples were performed in two Brazilian Southeast regions, one of them located at north of Cabo Frio upwelling (Macaé - RJ) and the other at south (Ubatuba - SP). The aims of this work were to compare abundance, size, average size of individuals, sex ratio, size at sexual maturity (CL50), reproductive period, juvenile recruitment and longevity in both areas. A total of 51,221 individuals were captured at Macaé and, at Ubatuba, 757 individuals were caught. A significant difference on the average size between the two regions was observed only in females, with the greatest size found at Macaé (15,9 ± 3,10 mm), whereas average size at Ubatuba was 14,2 ± 2,55 mm. At both regions, sex ratio was in favor of females. The values for CL50 were estimated as 12.2 mm in males and 15.7 mm in females at Macaé and, at Ubatuba, as 12.0 mm and 13.8 mm, in males and females, respectively. A continuous reproduction was verified at both regions, but two peaks were observed: spring and autumn, for Macaé, and spring and summer, for Ubatuba. Juvenile recruitment also was continuous, with two peaks for both regions: spring and late summer, for Macaé, and spring and early autumn, for Ubatuba. Growth parameters in Macaé were estimated as CL∞ = 20,07mm; k = 0,01/day; t0 = 0,403 in males and estimated as CL∞ = 26,93 mm; k = 0,007/day; t0 = 0,338 in females. In Ubatuba, values were estimated as CL∞ = 16,57 mm; k = 0,016/day; t0 = 0,44 in males and CL∞ = 20,59 mm; k = 0,012/day; t0 = 0,116 in females. Longevity was estimated as 457 days (1.25 years) in males and 643 days (1.76 years) in females of Macaé, and 294 days (0.81 years) in males and 400 days... (Complete abstract click electronic access below) / Mestre