Dissertações em Ecologia Aquática e Pesca (Mestrado) - PPGEAP/NEAP

URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/3479

O Mestrado Acadêmico iniciou em 2007 e pertence ao Programa de Pós-Graduação em Ecologia Aquática e Pesca (PPGEAP) do Núcleo de Ecologia Aquática e Pesca da Amazônia (NEAP) da Universidade Federal do Pará (UFPA).

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Acesso aberto (Open Access)
A atividade pesqueira nas ilhas do entorno de Belém
(Universidade Federal do Pará, 2010) SCHALLENBERGER, Bárbara Heck; FRÉDOU, Flávia Lucena; http://lattes.cnpq.br/4779271407117528
The Amazonian estuary is a region with favorable conditions for productivity, and fishery is an important activity. The islands of Combu, Onças and Mosqueiro, focus of this study, are part of the Amazonian estuary and fishing is an important activity. Based on this information, the objective of this study was to describe and to compare the different types of fishing at Combu, Onças and Mosqueiro islands, identifying sustainability indicators, considering the economic, social, ecological and technological aspects, which results may help to assist to generate subsidies for the formulation of public policies to the fisheries sector. Descriptive and numeric variables considering the different dimensions were used in order to describe the systems of fish production to make comparisons including both the systems and also the islands studied. For comparative statistical analysis only the numerical variables (means and percentages) were used from data collected by researches and from secondary data. Multivariate analysis; Cluster analysis and ordination (MDS) comparing the systems were applied to identify groups and the possible causes of the similarity between the systems for each island. On Combu´s Island it was identified the following fishery systems: matapi, gill net for consumption, block net , longline hook medium and longline hook large. On Onças´s Island it was observed the fishery systems matapi, gill net for consumption, gill net for commercial purpose, block net , longline hook medium and longline hook large. On Mosqueiro´s Island it was identified the fishery systems matapi, gill net commercial, longline hook medium and longline hook large. The analysis of systems in all dimensions showed that the island of Mosqueiro differs to the other islands. When analyzed separately by dimension Matapi system, block net and gill net consumption of the islandes Combu and Onças were very similar. However, systems observed in Mosqueiro´s Island differ from the other islands mainly considering the economic dimension. Based on the results, it can be said that fishing in the islands of Onças and Combu is for subsistence and the main activity is the vegetable extraction while fishing in Mosqueiro´s Island is commercial. Although fishing in the islands of Combu and Onças is only for subsistence, it´s also an important source of food and extra money for the residents. In Mosqueiro´s Island fishing has high economic importance, but the fishing areas are also exploited by fishermen from other parts of the state without any management initiatives by the government.
Acesso aberto (Open Access)
Participação e conhecimentos femininos na inserção de novas espécies de pescado no mercado e na dieta alimentar dos pescadores da RESEX Mãe Grande em Curuçá/PA
(Universidade Federal do Pará, 2013-04-30) PALHETA, Marllen Karine da Silva; RAVENA CAÑETE, Voyner; http://lattes.cnpq.br/9961199993740323
This paper aims to describe the main as the traditional knowledge of women shellfish and fisher of river and sea, the locality of Caratateua, RESEX Marine Mom Large Curuçá – PA, contributes to market integration and commercialization of new species of fish. Therefore, the paper uses a methodology qualitative and quantitative, disposing of data that point to a scarcity of the species is much appreciated in the local market, as well as presents the knowledge traditional female on key species that comprise the diet of fishermen as a way to bring new species in the local market. The paper describes, more, species that have been entered into the system from the feminine knowledge. Data collection occurred in the period from March to August 2012. The methodological techniques were semi-structured interviews and participant observation. To characterize the community socioeconomically were applied 76 questionnaires with residents. The semi-structured interviews were conducted with fishers / seafood community, being applied 10 questionnaires and market in the city of Curuçá were applied 9 questionnaires sent to sellers of fish. The interviews showed the changes over the years, evidencing the shortage of traditional species, both the table fisherman as the consumer market. Stresses, especially, as the woman has a fundamental role in inclusion of new species in both sectors, because there is a greater perception about the natural resources consumption.
Acesso aberto (Open Access)
A pesca de curral no município de São Caetano de Odivelas-PA
(Universidade Federal do Pará, 2013-02-22) FIDELLIS, Carolina de Nazaré Aleixo; BARTHEM, Ronaldo Borges; http://lattes.cnpq.br/4192105831997326
The fish weir is one of the most traditional and productive fishing gear from the coast of Pará. Its production reaches about 10% of fisheries production of Northeastern of Pará (Santos et al., 2005). The fishing productivity depends on the type of the corral and as the place where it is installed. To achieve this work, 12 fishing corrals were selected and classified according to the type (heart, shoves and pipe), the place of installation ("edge/brink" or "out") and the type of environment in which it is (riverbanks, the edge of the beach and sandbar/banks), were georeferenced and had its fishing productivity accompanied during the period of harvest (June, July and August) from 2012. In the community of San Juan de Ramos, were found roadside corrals 3 of type heart, installed on the banks of the Paruipema River, and 3 corrals out of type shoves, installed on sandbanks in the beaches mouse and of the sailor. In the community of Aê, were monitored 6 classified as corrals of the edge, 3 of type heart and 3 of type pipe, and all met installed in beach Ponta de Itaipu. 4.274 individuals were captured, distributed in 9 orders, 20 families and 43 species of fish. The order Perciformes was the one that presented the largest number of families (10 families or 50% of the total), the largest number of species (19 or 44%) and the largest number of individuals (3,190 or 75% of the total). Sciaenidae and Ariidae families are the most abundant in the region both in number of species and individuals. The Sciaenidae family was presented the highest number of individuals (2,855 or 67%), but had fewer species (8 or 19%) that the family Ariidae, with 10 species or 23% of the total. Of the 43 species caught, the four most represented were: Macrodon ancylodon (51%), Arius couma (9%), Cynoscion virescens (9%) and Mugil incilis (4%). The comparison of the catch between the Stockyards and localities over the months of monitoring indicated that the total production of corrals differed between the types of corrals associated with your location.
Acesso aberto (Open Access)
Seletividade de captura, dinâmica populacional, análise de estoque e sustentabilidade da pesca de Hemiodus unimaculatus (Bloch, 1794) a montante da barragem de Tucuruí, Brasil
(Universidade Federal do Pará, 2013-04-23) MARTINS, Jeronimo Carvalho; CINTRA, Israel Hidenburgo Aniceto; http://lattes.cnpq.br/6632466008150577; SARPEDONTI, Valérie; http://lattes.cnpq.br/2358097649881792
Hemiodus unimaculatus (Bloch, 1794) is one of the main species landed into the area of influence of Tucuruí Hydroelectric plant; however there is little information available about the fishery and biology of the species in the area. Therefore, this study aims to investigate spatial changes of H. unimaculatus, determine selectivity curves for the fishing nets used and calculate some parameters of population dynamics. The study area was located on Tucuruí’s dam, including the reservatory (flooded area) and up-river section. The samples were colected on a quaterly basis for the years 2001, 2003, 2005, 2006 and 2006, and semiannually in 2002 and 2004, in five areas located in the lake and two areas upstream, usinga battery of gillnets 50 m long and 3 m high, with a stretched mesh size of 40, 60, 80, 100 mm between opposing nodes. The Kruskal-Wallis test was used to compare mean total length and weight of the specimens at a significance level of 5%, the spatio-temporal variation of the catch was determined by cluster analysis and the SIMPER; selectivity for network construction curves selection, and population aspects (growth, longevity, mortality, recruitment and yield per recruit) with the aid of the FISAT II. Results showed that females were bigger and heavier than males. During the first period (2001 – 2003) the study area was shared in spawning grounds and growth, while in the final period (2005-2007) there was no difference in the use of space. The mesh of 60 mm is the most suitable for fishing, considering the capture of 50% of adults. The sex ratio was 1.44:1 favorable to females (χ2 c = 28.86; p < 0.0001). Relations total weight / total length showed a positive correlation and did not differ between sexes (t = -0.097; p = 0.9229), with males and females exhibited isometric growth. The condition factor was not different between the sampling points, suggesting that the species uses the entire study area as a feeding zone. The von Bertalanffy growth parameters were L∞ = 358 mm, k = 0.55 yr-1 and t0 = -0.15 year. The average total mortality and natural were 3.04 yr-1 and 0.7 yr-1, respectively. The exploitation rate was estimated at 0.77 and the yield per recruit showed that the rate of exploitation of the H. unimaculatus stock should be reduced by 52% to maintain the recruitment and spawning. So with all the information generated, it can be seen that change in the structure and spatio-temporal dynamics of H. unimaculatus is a process of continuous adaptation and appropriate fisheries management becomes essential for the preservation of the species. To reach this goal, it is necessary to review the current fisheries legislation, seeking an optimal mesh size for catching the species, decrease the rate of exploitation and regularly monitor the selectivity and population parameters.

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