CIM3-Livros (ou partes, com ou sem arbitragem científica)
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Browsing CIM3-Livros (ou partes, com ou sem arbitragem científica) by Author "Aníbal, J."
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- Ecological dynamics of green macroalgae Ulvales in Ria Formosa: a tale of blooms and shapesPublication . Aníbal, J.The History of Science is the sum of the stories of men and women that produced it. They spent their lives gathering information, that once treated becomes knowledge and it is compiled in articles and books. Many stories in Science start with a bang, but this tale started with a humble click, back in 1988. In a cold winter morning, a very tall man stood alone in a windy road, near a Ria Formosa’s mudflat taking photographs in low tide, apparently to nowhere. That same man, called Martin Sprung, repeated this monthly ritual, in the same spot, for the next years. Martin was a German zoologist, that came to the Algarve in the eighties to implement a German-Portuguese project to study the biology of Ria Formosa, which was very important in the development of the Marine Biology and Fisheries graduation course, in the recently created University of Algarve.
- Effects of spoilage on nitrogen and carbon stable isotopes signatures of the clam Ruditapes decussatusPublication . Aníbal, J.; Veiga-Pires, C.; Esteves, E.Fish and seafood products are highly susceptible to post-mortem spoilage due to autolytic reactions at start, then microbiological activity and eventually oxidative reactions. Chemical and microbiological parameters are usually used to assess quality and make decisions for protecting public health, but they lack precision in defining which spoilage pathway is occurring at each moment. The objective of this work was to assess the effects of spoilage reactions on nitrogen and carbon stable isotopes in the grooved carpet shell clam, Ruditapes decussatus, and compare them to biochemical indicators of seafood deterioration, in order to better understand the relations between the different spoilage pathways during commercial storage conditions. Clams were kept in a refrigerator at 5 ºC, to simulate normal commercial storage conditions, and sampled in the beginning of the experiment, and after eight, ten and twelve days. Moisture, condition index, percentage edibility, total volatile basic nitrogen (TVB-N), pH, nitrogen and carbon percentages and stable isotopes were determined for each sampling moment. Stable isotope analyses were performed using a Costech Elemental Analyzer (ECS 4010) coupled to a ThermoFinnigan Delta V Advantage. Stable isotopes analysis, especially for nitrogen, proved to be a good tool for the study of clam deterioration. Nitrogen stable isotopes results showed a relation with other spoilage indicators, such as pH and TVB-N, and allowed identifying spoilage specific pathways, such as amino acids decarboxylation and production of volatile nitrogen compounds.
- Introdução do livro Ria Formosa. Challenges of a coastal lagoon in a changing environmentPublication . Moura, Delminda; Aníbal, J.; Mendes, Isabel; Gomes, AnaRia Formosa is one of the most important weatlands of the Portuguese territory. Its rarity and ecological value led to the creation of the Ria Formosa Natural Park (law-Decree 373/87, 9th December). Ria Formosa hosts a remarkable diversity of habitats and biodiversity. It is of fundamental importance for several species of migratory birds and, some species in decline find here the optimal conditions for nesting. This is the case of the species Porphyrio porphirio that is the symbol of the Ria Formosa Natural Park. Due to protective measures of this species, its population has increased in recent years. The natural system named Ria Formosa is a shallow coastal lagoon (average depth of 2 m) protected from the direct impact of marine waves by a barrier-island system formed by five islands and two peninsulas facing the sea along ca. 55 km (Figure 1.1). The Ria Formosa barrier islands are narrow and elongated morphosedimentary features that diverge NW and NE orientated from the Cape St. Maria (Figure 1.1). St. Maria de Hárune, later on renamed as St. Maria de Fárão, were the names of the city of Faro, after the Arab domination, during which was Ibne-Hárune (Guerreiro and Magalhães, 1983). The lagoon with extensive marshes and tidal channels (total area of 18000 ha) maintains connections with the sea through six inlets, which guarantees daily renewal of water and nutrients at the pace of tides.
- Muxma and Estupeta: traditional food products obtained from tuna loins in South Portugal and SpainPublication . Aníbal, J.; Esteves, E.; Kristbergsson, Kristberg; Oliveira, JorgeTuna is a generic name for fi sh from the Scombridae family, which includes about 50 species, mostly from the Thunnus genus. Tuna is a very important commercial resource widely but sparsely distributed throughout the oceans of the world that generally occurs in tropical and temperate waters between about 45° north and south of the equator (FAO 2010 ). Because of high muscular activity, some tuna species display warm-blooded adaptations and can raise their body temperatures above surrounding water temperatures (Randall et al. 2002 ). This enables them to survive in cooler ocean environments and to inhabit a wider geographic range of latitudes than other kinds of fi sh. The most important tuna species for commercial and recreational fi sheries are yellowfi n ( Thunnus albacares ), bigeye ( T. obesus ), bluefi n ( T. thynnus , T. orientalis , and T. maccoyii ), albacore ( T. alalunga ), and skipjack ( Katsuwonus pelamis ) (FAO 2010 ).
- Quality Index Method (QIM): utilização da Análise Sensorial para determinação da qualidade do pescadoPublication . Esteves, E.; Aníbal, J.As indústrias da pesca e da aquicultura são responsáveis pela produção de cerca de 130 milhões de toneladas de pescado. Os portugueses lideram os países europeus em termos de consumo (com cerca de 55 Kg per capita por ano), ao nível dos maiores consumidores mundiais, os japoneses (com 60 Kg per capita por ano). A qualidade dos produtos da pesca e aquicultura é, em grande parte, determinada pelo grau de frescura. Neste artigo, apresenta-se uma metodologia, baseada na análise sensorial, designada Método do Índice de Qualidade (ou QIM) que permite, por um lado, avaliar de forma rápidam e objectiva a qualidade (a frescura) dum lote de pescado através da análise sensorial de um conjunto de atributos considerados relevantes e, por outro lado, estimar o tempo-de-prateleira restante desse lote.
- Variações sazonais da composição química e índice de condição da amêijoa-boa, Ruditapes decussatus, na Ria FormosaPublication . Aníbal, J.; Viegas, A. S.; Geraldes, A.; Francisco, VitorA nível nacional, por reunir as condições mais propícias para a reprodução e desenvolvimento da amêjoa-boa (Ruditapes decussatus), a Ria Formosa constitui o mais importante centro de exploração desta espécie de elevado valor comercial, representando cerca de 80% das amêijoas comercializadas em Portugal. O cultivo é realizado em viveiros, explorados por mariscadores, organizados em associações. Uma estimativa conservadora indica que existem mais de mil viveiros na Ria Formosa, os quais providenciam ocupação para cerca de dez mil pessoas. Com este trabalho pretendeu-se determinar a variação mensal dos teores em proteínas, hidratos de carbono, lípidos, humidade e cinzas, na amêijoa-boa. Paralelamente, calculou-se um índice de condição fisiológica baseado nos pesos do miolo e da concha. Estes parâmetros foram depois relacionados de forma a avaliar a sazonalidade da composição nutricional da amêijoa-boa e a sua eventual repercussão na comercialização e gestão dos viveiros deste bivalve na Ria Formosa.