Stima dell'abbondanza di Tursiops truncatus nella provincia di Agrigento (Stretto di Sicilia)

Le zone marittime meridionali della Sicilia sono costantemente studiate per capire il loro stato ecologico e la biodiversità che nel tempo tende a cambiare. Uno dei fattori utili per approfondire l’analisi dell’ecosistema marino è lo studio e la stima delle popolazioni che occupano queste aree. Le popolazioni più soggette a questa ricerca sono quelle della specie del delfino tursiope (Tursiops truncatus), una delle poche appartenenti all’infraordine dei cetacei ad essere presente vicino alla costa. Ogni anno, questi mammiferi marini vengono studiati dall’ente presente nel territorio di Agrigento (Stretto di Sicilia), l’associazione MeRiS - Mediterraneo Ricerca e Sviluppo APS, per monitorare e aggiornare le informazioni sull’abbondanza e la distribuzione delle popolazioni, che si evolvono nel tempo. La presente ricerca vuole valutare e stimare l’abbondanza della popolazione del tursiope nelle acque antistanti la provincia di Agrigento, nello Stretto di Sicilia, grazie ai dati acquisiti negli avvistamenti effettuati dal 2016 al 2022. Attraverso la tecnica di foto-identificazione sono testati i metodi utilizzati dall’Associazione MeRiS, per offrire una visione della struttura sociale della specie, del suo areale di distribuzione e incrementare le conoscenze per lo studio dello stato ecologico nell’area di indagine. Lo studio ha dimostrato la capacità delle tecniche di stima messe in atto nella valutazione delle popolazioni. Inoltre, l’impegno nell’utilizzo della tecnica di campionamento della foto-identificazione è stato davvero fondamentale per il compimento sia di questa ricerca, ma anche per la maggior parte degli studi citati; perciò, questo metodo è senza ombra di dubbio uno dei mezzi più convenienti per il monitoraggio delle popolazioni marittime.

Spatial-temporal variability of the benthic communities in Ravenna harbour using Autonomous Reef Monitoring Structures (ARMS) with focus on Non-Indigenous Species (NIS)

A Non-Indigenous Species (NIS) is defined as an organism, introduced outside its natural past or present range of distribution by humans, that successfully survives, reproduces, and establish in the new environment. Harbors and tourist marinas are considered NIS hotspots, as they are departure and arrival points for numerous vessels and because of the presence of free artificial substrates, which facilitate colonization by NIS. To early detect the arrival of new NIS, monitoring benthic communities in ports is essential. Autonomous Reef Monitoring Structures (ARMS) are standardized passive collectors that are used to assess marine benthic communities. Here we use an integrative approach based on multiple 3-month ARMS deployment (from April 2021 to October 2022) to characterize the benthic communities (with a focus on NIS) of two sites: a commercial port (Harbor) and a touristic Marina (Marina) of Ravenna. The colonizing sessile communities were assessed using percentage coverage of the taxa trough image analyses and vagile fauna (> 2 mm) was identified morphologically using a stereomicroscope and light microscope. Overall, 97 taxa were identified and 19 of them were NIS. All NIS were already observed in port environments in the Mediterranean Sea, but for the first time the presence of the polychaete Schistomeringos cf. japonica (Annenkova, 1937) was observed; however molecular analysis is needed to confirm its identity. Harbor and Marina host significantly different benthic communities, with significantly different abundance depending on the sampling period. While the differences between sites are related to their different environmental characteristic and their anthropogenic pressures, differences among times seems related to the different life cycle of the main abundant species. This thesis evidenced that ARMS, together with integrative taxonomic approaches, represent useful tools to early detect NIS and could be used for a long-term monitoring of their presence.

Phylogenetic relationships within the speciose family Characidae (Teleostei: Ostariophysi: Characiformes) based on multilocus analysis and extensive ingroup sampling

Background: With nearly 1,100 species, the fish family Characidae represents more than half of the species of Characiformes, and is a key component of Neotropical freshwater ecosystems. The composition, phylogeny, and classification of Characidae is currently uncertain, despite significant efforts based on analysis of morphological and molecular data. No consensus about the monophyly of this group or its position within the order Characiformes has been reached, challenged by the fact that many key studies to date have non-overlapping taxonomic representation and focus only on subsets of this diversity. Results: In the present study we propose a new definition of the family Characidae and a hypothesis of relationships for the Characiformes based on phylogenetic analysis of DNA sequences of two mitochondrial and three nuclear genes (4,680 base pairs). The sequences were obtained from 211 samples representing 166 genera distributed among all 18 recognized families in the order Characiformes, all 14 recognized subfamilies in the Characidae, plus 56 of the genera so far considered incertae sedis in the Characidae. The phylogeny obtained is robust, with most lineages significantly supported by posterior probabilities in Bayesian analysis, and high bootstrap values from maximum likelihood and parsimony analyses. Conclusion: A monophyletic assemblage strongly supported in all our phylogenetic analysis is herein defined as the Characidae and includes the characiform species lacking a supraorbital bone and with a derived position of the emergence of the hyoid artery from the anterior ceratohyal. To recognize this and several other monophyletic groups within characiforms we propose changes in the limits of several families to facilitate future studies in the Characiformes and particularly the Characidae. This work presents a new phylogenetic framework for a speciose and morphologically diverse group of freshwater fishes of significant ecological and evolutionary importance across the Neotropics and portions of Africa.

O uso da ren??ncia fiscal na ??rea de museus

O objetivo desse artigo ?? investigar como a ren??ncia fiscal ?? utilizada na ??rea de museus. A fundamenta????o te??rica faz breve apresenta????o da literatura sobre implementa????o e descreve o uso da ren??ncia fiscal na ??rea de museus mediante an??lise de seis vari??veis: incentivos, autonomia, informa????o, apoio institucional, apoio social e etapas e tempo. A metodologia utilizada foi a an??lise documental e entrevistas. A an??lise foi feita com ajuda do programa NVIVO9. As principais conclus??es s??o que embora haja incentivos e autonomia em graus suficientes para permitir boa implementa????o via ren??ncia fiscal, h?? quest??es informacionais e referentes ??s etapas e tempo que dificultam sua implementa????o. Al??m disso, a ren??ncia fiscal ?? concentradora, desigual e apresenta baixa participa????o de empresas do setor privado. Esses problemas parecem diminuir a capacidade de a implementa????o de museus mediante o uso da ren??ncia fiscal alcan??ar os efeitos almejados.

Viagem a wonderland: notas para um espectáculo a ser lido: relatório de estágio

Relatório de Estágio submetido à Escola Superior de Teatro e Cinema para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Teatro - especialização em Artes Performativas - Interpretação

Los socarrats valencianos, estudios de caracterización y técnicas de limpeza

Disertación presentada en la Facultad de Ciencias y Tecnología de la Universidad Nueva de Lisboa para obtención del grado de Master en Conservación y Restauración (Área de Cerámica)

Jeronimo Martins in 2030 succession and strategy planning

The case outlines the history of Jerónimo Martins and the Dos Santos family in the context of a dialogue between the pater familias Alexandre and his successor Pedro. The case idea analyses the problems associated with next generation entrance in the family business and the outcomes on the different stakeholders and environment, with a particular focus on the evolution of the relationship between family, family holding and the JM group. The case is designed to assess the sustainability of a traditional succession strategy in the context of the challenges of globalization and growth of the company and family, analysing the reciprocal influence in a long-term strategy.

The roman theatre of Bracara Augusta

This paper aims to present the main features of the roman theatre of Bracara Augusta identified in 1999. Although it is still under study, a significant set of evidence made it possible to present its characteristics, to value the socioeconomic issues related with its construction and to discuss the aspects related to the development of the NW Iberian Peninsula cities, where traditionally this type of equipment was believed to be absent, and to understand the diffusion of roman public architecture models in peripheral regions within the Western Empire.

The domestic architecture of Bracara Augusta and its evolution

The excavations carried out under the rescue “Project of Bracara Augusta” have generated significant amounts of data that enabled the reconstruction of Bracara Augusta urban evolution and the characterization of its buildings and blocks. This paper aims to enhance the existing data related with the domestic architecture of the roman town, which was mainly represented by the houses of domus type.

A new sector of Via XVII Necropolis in Bracara Augusta: the High Empire phase

Between 2008 and 2009 a preventive excavation supervised by the Unit of Archaeology of the University of Minho was conducted in an area with approximately 5000 square meters allowing the identification of a wide sector of the Via XVII necropolis, which is one of the five roman necropolises known to have existed in Bracara Augusta. The findings enabled us to define a typological framework related with incinerations, to understand the internal organization of the necropolis and recover the ritual marks of the funerary practices between the first century BC and the second century AD.

Determinación química del aceite esencial de Schinus areira L. (Aguaribay) y su actividad antioxidante.

INTRODUCCIÓN: Durante su evolución, las plantas han desarrollado un sistema químico de defensa con el fin de combatir el estrés del medio ambiente utilizando sus metabolitos secundarios. De todos los productos químicos secundarios sintetizados por las plantas, los terpenos han contribuido significativamente al desarrollo de nuevos compuestos y son producidos por una gran variedad de plantas, algunos animales (insectos y organismos marinos) y microorganismos. Son abundantes en frutas, cereales, verduras y flores, en musgos, algas y líquenes y son un componente importante de las resinas de las plantas, constituyendo uno de los grupos más amplios de fitonutrientes. Los terpenos son los principales componentes de los aceites esenciales de las plantas aromáticas y tienen gran actividad biológica y actúan como antioxidantes protegiendo los lípidos del ataque de radicales libres de especies del oxígeno, como oxígeno singlete, y radicales hidroxilo, peróxido y superóxido. OBJETIVO GENERAL. Determinar la composición química del aceite esencial de S. areira y la actividad anti-oxidante de la fracción rica en terpenos hidrocarburos y sus componentes mayoritarios, en un modelo experimental de pulmón de ratón. OBJETIVOS ESPECÍFICOS: a) Obtener el aceite esencial a partir de hojas de S. areira; b) Identificar y cuantificar los terpenos presentes en el aceite esencial de S. areira; c) Separar la fracción mayoritaria del aceite esencial (AE) (terpenos hidrocarburos); d)Detectar a nivel pulmonar los posibles efectos anti-oxidante de la administración intraperitoneal (i.p.) de la fracción de hidrocarburos obtenidas del aceite esencial de S. areira y de sus componentes mayoritarios, en un modelo inflamatorio. MATERIALES Y METODOS: 1) Obtención de las muestras de S. areira: Serán recolectada en la localidad de Mendiolaza, Córdoba. Un ejemplar de la misma será depositado en el Museo Botánico de la Fac. Cs. Ex. Fís. y Nat., UNC.2) Obtención del AE: El material vegetal será obtenido por destilación por arrastre por vapor de agua en un equipo tipo Clevenger modificado. 3) Fraccionamiento AE: Se separará la fracción mayoritaria del aceite que corresponde a la de los terpenos hidrocarburos con el fin de determinar su actividad biológica. Dicha separación se llevará a cabo por cromatografía en placa delgada (CCD) utilizando n-hexano o cloroformo como sistema de solvente para la fase móvil. También se determinará la actividad de los compuestos mayoritarios, los cuales serán obtenidos de muestras comerciales (ICN Pharmaceuticals) y para el caso de los que no estén disponibles en el comercio, serán aislados por técnicas cromatográficas. 4) Identificación y cuantificación de los terpenos del AE:Para la cuantificación de los terpenos, se realizará un análisis por cromatografía gas-liquido-espectrometría de masas (GC-MS) empleando un equipo Perkin Elmer Q600 equipado con detector de ionización de llama, con una columna capilar Elite-wax (Crossband-PEG) (60m x 0. 25 mm ID x 0. 25 µm df). La interpretación de los espectros de masas se realizará utilizando una biblioteca Adamns, NIST y por comparación con espectros similares tomados de bibliografía. 5) Inducción de inflamación con LPS y tratamiento con una fracción del AE de S. areira: Se procederá a la instilación nasal de LPS (1,67µg/Kg de peso corporal) y a las 2hs, la administración intraperitoneal de la fracción hidrocarbonada de AE (300 mg/Kg) y se determinará a las 3hs: TNF-α; infiltrado celular y dienos conjugados en muestras obtenidas en lavado bronqueo-alveolar en pulmón de ratón. 6) Genotoxidad: Se utilizará Allium cepa L. para evaluar aberraciones cromosómicas. Estadística : Se analizarán los datos con ANAVA: no paramétrico con Kruskal Wallis y Dunn a posterior (InfoStat, 2010). De los resultados se espera obtener un perfil químico de los terpenos hidrocarbonados de S. areira y evaluar su posible acción antioxidante.

Genera mammalium, por Angel Cabrera. Monotremata, Marsupialia (con 19 láminas en color)

(1919)

De Chamonix a Salt Lake city: evolución del concepto de villa olímpica en los Juegos de invierno

Esta ponencia fue presentada en el International Symposium on Olympic Villages, Museo Olímpico, Lausana, Suiza. Su objetivo es exponer la evolución histórica del concepto de villa olímpica en los Juegos de Invierno y reflexionar sobre aquello en lo que se podría convertir. Esta evolución histórica puede dividirse en tres grandes períodos en que se basa este plan: antes de 1960, de 1964 a 1984 y a partir de 1988.