Important operational changes that have gradually been assimilated and new approaches that are developing as part of the movement toward sustainable intensive aquaculture production systems are presented via historical, current, and future perspectives. Improved environmental and economic sustainability based on increased efficiency of production continues to be realized. As a result, aquaculture continues to reduce its carbon footprint through reduced greenhouse gas emissions. Reduced use of freshwater and land resources per unit of production, improved feed management practices as well as increased knowledge of nutrient requirements, effective feed ingredients and additives, domestication of species, and new farming practices are now being applied or evaluated. Successful expansion into culture of marine species, both off and on shore, offers the potential of substantial increases in sustainable intensive aquaculture production combined with integrative efforts to increase efficiency will principally contribute to satisfying the increasing global demand for protein and food security needs.

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RESUMENEn este artículo proponemos una revisión de la antropología de la alimentación en España y en Latinoamérica desde una perspectiva histórica reciente. El artículo analiza el origen de la antropología de la alimentación en España y Latinoamérica y sus dificultades para el asentamiento de esta especialidad en el contexto de la antropología sociocultural hasta nuestros días, con una revisión de los intereses temáticos presentes y emergentes. El artículo se organiza principalmente alrededor de tres ejes que agrupan las temáticas y tendencias de los profesionales que han trabajado en este campo: el patrimonio alimentario, entre localidad y globalización; carencias alimentarias; y simbolismos y significaciones alimentarias.

Tools for online collaboration are becoming increasingly prevalent in recent years. Certain characteristics of these tools encourage this proliferation: they are easy to use, always available, allow knowledge to be built collaboratively and disseminated quickly through social networks, and are usually free of charge. In this context, blogs are becoming increasingly important in the field of health as digital newspapers and magazines that support a large number of multimedia formats. The possibility to subscribe to blogs and their availability in formats adaptable to mobile devices mean their content can be taken anywhere. Although the use of blogs is well-established among Health Science professionals, their use among university professors as a component of the teaching strategies in these disciplines is much less common, and thus the benefits, risks and limitations of using blogging as a pedagogical tool are poorly understood. In this preliminary evaluation of a pedagogy, a public WordPress-based blog was developed for the Nutrition and Dietetics module of the undergraduate course in Nursing at the University of Castilla-La Mancha (Spain). This was primarily intended as way to use ICT to increase the level of student engagement and interest in learning the subject, but also as a way to introduce future health professionals to the world of blogging. This paper describes our experiences with this pedagogical project and discusses the advantages and disadvantages of the use of blogs in university Health Sciences teaching. Incorporating this tool into teaching methodologies takes advantages of the theoretical possibilities it offers, which include crucial aspects such as developing critical thinking, acquiring knowledge, answering questions from students, and enabling new mechanisms to develop the skills that must be acquired. However, the challenges and inconveniences are also highlighted; these are principally the lack of motivation and the low participation of the students. By analysing the outcomes of this preliminary evaluation of a pedagogy, it is concluded that blogs are a very useful tool, although it is suggested that the literature shows a certain bias toward the publication of successful trials.

The United States has a small net‐pen salmon industry dating back over 40 years and a nascent net‐pen industry for other marine fish. The United States net‐pen aquaculture sector has improved its resource efficiency in terms of the amount of fish meal and fish oil used in feeds and reduced its environmental impacts in terms of the mass loading and impact of nutrient discharge on the receiving ecosystem, the incidence and treatment of fish diseases, the use of antibiotics, and the number and impact of fish escapes, while increasing production. These changes can be attributed to a combination of advances in science and technology, rising cost of fish meal/oil, improved management, and informed regulatory practices. Net‐pen aquaculture has become an efficient food production system. Existing laws and regulations in the United States effectively address most of the potential adverse environmental effects of net‐pen aquaculture.

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Background: Demographic transition is causing an increasingly aged society, which has a significant impact on public health strategies. Increases in the size of the elderly cohort create a wider stratification and pose specific challenges. Nutrition and diet are one key issue. This study aims to describe food-related practices, beliefs, and representations of non-institutionalized older adults in rural communities in Extremadura (Western Spain). Method: The ethnographic-based fieldwork was conducted from January to July 2019. Empirical material was collected through different research relationships (semi-structured interviews and informal conversations) and direct observation in various locations in Extremadura―involving a variety of agents associated with different aspects of the nutritional process. Results: Data analysis revealed four major themes: (1) Limitations on choice and quality of food available; (2) food preferences and cooking methods; (3) the role of nostalgia in the construction of taste preferences; and (4) perceptions of what “healthy” food is and how respondents relate to the advice provided by health professionals. Conclusions: Nutritional choices among the group studied presented significant differences from medical advice―which was seen as a series of “bans” that did not carry enough authority to alter the symbolic value attached to their traditions.