Merluzas del mundo (Familia Merlucciidae). Catálogo comentado e ilustrado de las merluzas conocidas

Revisión de la familia Merlucciidae, con todas las especies actualmente aceptadas. Claves de identificación. Dibujos y fotografías de todas ellas, así como de piezas duras (Otolitos, hiomandibulares y Urohiales. A destacar la diferencia existente entre las especies americanas y las euroafricanas(presencia o ausencia de escamas en la membrana nasal).-- 57 pages, 12 colour plates[EN] This is a worldwide catalogue of the family Merlucciidae. Two subfamilies, Macruroninae and Merlucciinae, are recognized comprising four genera, Lyconodes, Lyconus, Macruronus and Merluccius, and 18 species. The following subspecies are proposed: Macruronus novaezelandiae magellanicus Lönnberg, 1907; Merluccius albidus magnoculus Ginsburg, 1954, Merluccius australis polylepis Ginsburg, 1954 and Merluccius polli cadenati Doutre, 1960 and Merluccius merluccius smiridus Rafinesque, 1810. The possibility of one other subspecies, Merluccius merluccius lessepsianus, represents the first record of Merluccius from the Red Sea. Merluccius paradoxus is first recorded from Madagascar. In the introductory chapters, Merlucciidae systematics is debated, justifications for the proposed taxonomic organization are provided, and the characters used for the identifications are discussed. Dichotomous keys are provided in the systematics chapter, enabling the identification of the hakes to the species level. Subfamilies and genera are also defined. The species are arranged in alphabetical order under each subfamily and genus to which they belong. The scientific name appears in bold at the head of each genus and species description, followed by the author, year of first description, and publication. Existing synonyms and FAO common names in English, French and Spanish are also provided. For each species there is an illustration followed by ten sections: description or diagnosis with differential characters; additional information; geographical distribution; habitat and biology; size; fisheries; fishery statistics; state of resources; local names, if any; and bibliographical references (author and year). The review is completed by a series of colour plates showing details of different elements (heads, otoliths, hyomandibulars, urohyals) for a quick and efficient diagnosis of the genera and species of Lyconus, Macruronus and Merluccius[ES] Éste es un catálogo mundial de la familia Merlucciidae. Se presentan dos subfamilias: Macruroninae y Merlucciinae, con cuatro géneros: Lyconodes, Lyconus, Macruronus y Merluccius, debidamente comentadas e ilustradas que incluyen 18 especies. Se proponen las siguientes subespecies: Macruronus novaezelandiae magellanicus Lönnberg, 1907, Merluccius albidus magnoculus Ginsburg, 1954, Merluccius australis polylepis Ginsburg, 1954, Merluccius polli cadenati Doutre, 1960 y Merluccius merluccius smiridus Rafinesque, 1810, así como la posibilidad de la existencia de otra, Merluccius merluccius lessepsianus, que constituiría la primera cita del género Merluccius en el Mar Rojo. Igualmente se lleva a cabo el primer registro de Merluccius paradoxus en Madagascar. En los capítulos introductorios se debate la sistemática de Merlucciidae, justificando la organización taxonómica propuesta, y se discute sobre los caracteres usados para la identificación. En el capítulo sistemático se presentan las claves dicotómicas que permiten identificar los organismos tratados aquí hasta el nivel de especie. Se definen también las subfamilias y los géneros. La descripción de las especies se encabeza con el nombre científico, el autor de la primera descripción y el año de la misma, así como el lugar donde se publicó. Inmediatamente después, si existen, sus sinónimos y los nombres FAO en español, francés e inglés. A continuación se presenta una ilustración de la especie a la que siguen diez apartados: descripción o diagnosis, según el caso, con las características diferenciales, notas complementarias, distribución geográfica (acompañada de un mapa), hábitat y biología, talla, pesquería, nombres locales, si los tiene y, finalmente, las referencias bibliográficas (autor y año), utilizadas en cada caso. Finalmente, el trabajo se complementa con una serie de láminas en color que muestran aspectos y detalles de diferentes elementos (cabezas, otolitos, hiomandibulares, urohiales), que, en conjunto, permiten un rápido y eficaz diagnóstico de las especies de los géneros Lyconus, Macruronus y MerlucciusFood and Agriculture Organization of the United Nations (FAO)Peer reviewe

Towards more sustainable material formulations: a comparative assessment of PA11-SGW flexural performance versus oil-based composites

The replacement of commodity polyolefin, reinforced with glass fiber (GF), by greener alternatives has been a topic of research in recent years. Cellulose fibers have shown, under certain conditions, enough tensile capacities to replace GF, achieving competitive mechanical properties. However, if the objective is the production of environmentally friendlier composites, it is necessary to replace oil-derived polymer matrices by bio-based or biodegradable ones, depending on the application. Polyamide 11 (PA11) is a totally bio-based polyamide that can be reinforced with cellulosic fibers. Composites based on this polymer have demonstrated enough tensile strength, as well as stiffness, to replace GF-reinforced polypropylene (PP). However, flexural properties are of high interest for engineering applications. Due to the specific character of short-fiber-reinforced composites, significant differences are expected between the tensile and flexural properties. These differences encourage the study of the flexural properties of a material prior to the design or development of a new product. Despite the importance of the flexural strength, there are few works devoted to its study in the case of PA11-based composites. In this work, an in-depth study of the flexural strength of PA11 composites, reinforced with Stoneground wood (SGW) from softwood, is presented. Additionally, the results are compared with those of PP-based composites. The results showed that the SGW fibers had lower strengthening capacity reinforcing PA11 than PP. Moreover, the flexural strength of PA11-SGW composites was similar to that of PP-GF compositesPostprint (published version

I y II censo de ardeidos invernantes en dormidero en Baleares

I and II Census of winter roosting Ardeidae in the Balearic Islands. Sincronized counts were conducted ofArdeidae entering roosts in Mallorca, Menorca and Ibiza during the winters of 2007 (Census I) and 2008 (Census II). There were large fluctuations between years for the cattle egret Bubulcus ibis in Menorca and Mallorca (with increases of 62.5% and 26.2% respectively) and a tendency towards stability for the other species censused. The roosts chosen were mainly low perches over wetland or dry areas where the birds roosted higher up in pines

Intervention AUVs: The Next Challenge

While commercially available AUVs are routinely used in survey missions, a new set of applications exist which clearly demand intervention capabilities. The maintenance of: permanent underwater observatories, submerged oil wells, cabled sensor networks, pipes and the deployment and recovery of benthic stations are a few of them. These tasks are addressed nowadays using manned submersibles or work-class ROVs, equipped with teleoperated arms under human supervision. Although researchers have recently opened the door to future I-AUVs, a long path is still necessary to achieve autonomous underwater interventions. This paper reviews the evolution timeline in autonomous underwater intervention systems. Milestone projects in the state of the art are reviewed, highlighting their principal contributions to the field. To the best of the authors knowledge, only three vehicles have demonstrated some autonomous intervention capabilities so far: ALIVE, SAUVIM and GIRONA 500, being the last one the lightest one. In this paper GIRONA 500 I-AUV is presented and its software architecture discussed. Recent results in different scenarios are reported: 1) Valve turning and connector plugging/unplugging while docked to a subsea panel, 2) Free floating valve turning using learning by demonstration, and 3) Multipurpose free-floating object recovery. The paper ends discussing the lessons learned so far

Recompte hivernal d'aus aquàtiques i limicoles a les Balears. Gener 2012

Winter census of Wildfowl and Shorebirds in the Balearic Islands, January 2012. A total of 31,176 birds were recorded of 68 espècies, a decrease of 13 % in number of individuals and 7 % in species compared with January 2011. the proportions per island were 73 % in Mallorca, 19.8 % in Menorca and 7.1 % in ibiza/Formentera. the results per island are compared with the 1991-2011 mean. Anseriformes and charadriformes have undergone 11 % and 55 % decreases respectively over the last. in contrast, Podicipediformes and Phoenicopteriformes have increased

Recompte hivernal d'aus aquàtiques i limícoles a les Balears, gener 2012.

Winter census of Wildfowl and Shorebirds in the Balearic Islands, January 2012. A total of 31,176 birds were recorded of 68 espècies, a decrease of 13 % in number of individuals and 7 % in species compared with January 2011. the proportions per island were 73 % in Mallorca, 19.8 % in Menorca and 7.1 % in ibiza/Formentera. the results per island are compared with the 1991- 2011 mean. Anseriformes and charadriformes have undergone 11 % and 55 % decreases respectively over the last. in contrast, Podicipediformes and Phoenicopteriformes have increased

La reforma a primària

Abstract not availabl