Teses em Ecologia Aquática e Pesca (Doutorado) - PPGEAP/NEAP

URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/3501

O Doutorado 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)
Ecologia, pesca e dinâmica populacional do camarão-da-Amazônia - Macrobrachium amazonicum (Heller, 1862) (Decapoda:Palaemonidae) – capturado na região das ilhas de Belém - Pará - Brasil
(Universidade Federal do Pará, 2011) SILVA, Bianca Bentes da; MARTINELLI-LEMOS, Jussara Moretto; http://lattes.cnpq.br/5264841936875017; ISAAC, Victoria Judith; http://lattes.cnpq.br/3696530797888724
In monthly biological samples of M. amazonicum in Guajará Bay and Mosqueiro island, were studied reproduction, density, morphometric relationships and population dynamics. Two other sample designs was realized in two perennial the same estuary. Results indicate differences in capture of this species using different bait of meal, but is solely on the abundance and population structure does not change. The species is most abundant in the dry season, supporting the idea higher catchability of fishery resources. In Combu island was found species with larger sizes. Females are significantly larger and heavier than males, indicating the differentiation in metabolism due to reproduction. Sex ratio of males is higher in smaller size classes, which may indicate an increase in predation on smaller sizes of males due to their behavior more aggressive than the females or males simply because they reach lengths larger than females are more heavily preyed upon by fishing, with the recruitment of only the smaller males. First maturation length for both sexes resulted in 11.5 mm – carapace length - (11.5 mm in males and 11.2 mm in females). Reproduction in M. amazonicum is continuous or periodic a gradual increase during the months from October to March. The most common sites housed, as inner regions of tidal channels or holes (common in Amazon estuary) sites are preferentially sought by mature females for spawning and juvenile growth. Von Bertalanffy growth parameters obtained were very similar between the sexes, where L ∞ = 44.8 mm and K = 0.35 for males and L ∞ = 46.5 and K = 0.31 for females. Mortality and exploitation obtained was in maximum sustainability and the management should be treated fairly care. In this situation, any increase in effort may result a state of over-exploitation of growth. Allied to near commitment of the stocks of M. amazonicum of the socio economic fishing is no different from other systems of coastal fishery Para: poor education, poor performance of professional associations, chain productive complex and that its main underprivileged. We suggest the statistical monitoring of production, the delineation of the minimum capture length in 4.5cm; suppression of fishing with matapis in headwater areas of creeks and tidal channels, a census of users and the use of models bioeconomic that include major aspects of its biological and productive chain.
Acesso aberto (Open Access)
Geotecnologias aplicadas ao ordenamento territorial pesqueiro industrial do estuário amazônico
(Universidade Federal do Pará, 2012-06-12) SILVA, Christian Nunes da; ALMEIDA, Oriana Trindade de; http://lattes.cnpq.br/0325909843645279; MCGRATH, David Gibbs; http://lattes.cnpq.br/4373475491613670
The present work aims to reflect on the fishing activity geographically, with some categories of territorial analysis that can be worked in fishing, taking into consideration the livelihoods of fishermen, the territorial scope of its influence on fisheries and the mechanisms of spatial representation in environment computer that are currently available, capable of achieving the spatial patterns of coverage. This analysis was based on the consideration that the fishery is of utmost importance for the supply of urban centers, the main source of livelihood and income of populations of fishers in the Amazon region. New methodological procedures and technological processes have generated a significant fishing increasing both the apparent exhaustion of resources, and the recognition and functional protein, fish products that have gained in recent years, as a means of proper nutrition for the maintenance of quality of the consumer. Thus, the main objective of this study is to verify and discuss the feasibility of using geotechnology in the current planning model that can be seen fishing in the Amazon region, seeking to understand how this land use in fishing may include: geo; information about equipment fishing used to catch fish, knowledge of fishermen and the Brazilian legislation. Literature searches and field (in the Caeté bay and river Ituquara, Pará state), integrated to work in the laboratory, using geoprocessing techniques of remote sensing products allow mapping the dynamic moment of some socio-spatial relationships and structural by passing fishing, so it is important to focus on mechanisms of assistance to the planning of fishery resources. The technology called “geoinformation” science, has shown greater visibility in environmental studies and therefore should be included in the fishing industry as an important mechanism for monitoring, surveillance and research for the future management strategies.

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