New genus, three new species and new records of Herpyllobiidae Hansen, 1892 (Crustacea, Copepoda) parasites of polychaetes from Antarctica

During the Antarctic Polarstern cruises ANT XIX/3 (ANDEEP-I), XIX/5 (LAMPOS), and XXI/2 (BENDEX) new material of symbiotic copepods associated with polynoid polychaetes was collected. Here the authors present results for the highly modified family Herpyllobiidae Hansen, 1892. New records of Herpyllobius antarcticus Vanhöffen, 1913 and Herpyllobius polarsterni López-González, Bresciani and Conradi, 2000 are provided from the eastern Weddell Sea and Bouvet Island respectively. A new species of the genus Eurysilenium Sars, 1870, E. australis, is described from specimens collected at the eastern Weddell Sea. A new genus, Gottoniella gen. nov., is proposed to include two species, G. antarctica sp. nov. and G. andeepi sp. nov., described from material collected from the Weddell Sea and Scotia Arc

Factores Predisponentes Asociados a la Perdida prematura del Primer Molar Permanente en escolares de 7 a 14 años del Colegio Guardabarranco Managua, Septiembre-Noviembre 2015

Los primeros molares permanentes son estructuras dentales muy importantes en el desarrollo y crecimiento maxilofacial, y en la condición de salud general. El objetivo de este estudio es analizar y describir los factores predisponentes que se asocian a la pérdida prematura de esta pieza, en escolares de 7 a 14 años del colegio Guardabarranco, del distrito 4 de la ciudad de Managua. Este es un estudio retrospectivo de corte transversal se desarrolló un estudio tipo caso control que consta de una muestra de 186 escolares donde se evaluó los Factores que se asocian a la perdida de la primer molar permanente a través de higiene oral a través del HIOS (índice de Higiene Oral Simplificado), el índice de COP-D y ceo-d tradicional, y la evolución de afecciones sistémicas como factor de pérdida. Este estudio encontramos variables de diversos tipos. Los datos presentados sirven como un indicador del estado de salud bucal y podrían ser empleados para la evaluación de programas de salud dental preventivos de los colegios

Asterocheres hirsutus, a new species of parasitic copepod (Siphonostomatoida : Asterocheridae) associated with an Antarctic hexactinellid sponge

The asterocherid siphonostomatoid copepod Asterocheres hirsutus, a new species, is described from a hexactinellid sponge of the genus Rossella Carter collected during the Polastern cruise ANT XVII/3, off South Shetland Islands. The distinctive features of this new species are: a female with 21-segmented and a male with 17-segmented antennules, praecoxal endite of maxillule more than four times longer than palp and the ornamentation of the posterior surface of legs 1–4. A detailed description of both sexes is presented

The benthic Gammaridea (Crustacea, Amphipoda) fauna of Algeciras Bay (Strait of Gibraltar): distributional ecology and some biogeographical considerations

The Gammaridea fauna of Algeciras Bay, located on the Mediterranean side of the Strait of Gibraltar, was studied with regard to the species composition, distribution and ecology. Of the 116 species identified, 13 are recorded for the first time along the Iberian Peninsula coast, 30 for the Spanish coast and 78 for the Andalusian coast. Two species, Apherusa bispinosa (Bate 1857) and Idunella nana (Schiecke 1973), were collected for the second time in the Mediterranean Sea; this represents the first record of I. nana since its original description. The abundances of the various species and their distribution in terms of bathymetry and type of substrate were analysed, as was the enlargement of the distributional range of some species in the Mediterranean Sea. With regard to biogeographical distribution, Algeciras Bay can be considered a typical Mediterranean locality despite being situated in the Strait of Gibraltar. This is in agreement with previous studies on the amphipod fauna of the Portuguese coast.Dirección General de Investigación Científica y Técnica de España (DGICYT ). "Fauna Ibérica III" PB92-0121CEPSA (Compañía Española de Petróleos, S.A.), Fundación Sevillana de Electricidad, Ayuntamineto de los Barrios y la Mancomunidad de Municipios del Campo de Gibralta

Helmintofauna de roedores de Canarias : estudio faunístico, ecológico y molecular

El presente estudio proporciona los primeros datos sobre la parasitofauna de los roedores Murinae presentes en Canarias (Rattus rattus, Rattus norvegicus y Mus musculus domesticus). Además, se analiza la variación genética, el posible origen y la distribución geográfica de estos hospedadores y algunos de sus parásitos mediante distintos marcadores moleculares, así como su implicación en la salud y aspectos medioambientale

Relaciones entre las variables medioambientales y la abundancia de la fauna de peracáridos en la Bahía de Algeciras (sur de la Península Ibérica)

The distribution and abundance of peracaridean fauna associated with the bryozoan Bugula neritina have been analysed according to their possible relationships with environmental stress on the coastline of Algeciras Bay. The spatial environmental variability along this bay has been established based on the analysis of five abiotic variables (hydrodynamism, siltation, suspended solids, and organic matter content) at six stations over a 12-month period. The temporal variability of these abiotic variables was not taken into account due to the method used in collecting the samples. The abundance and beta diversity of the peracarid fauna were also calculated monthly. Hydrodynamism was the only abiotic variable significantly correlated with beta diversity, with a linear regression model between the two variables (r = 0.81). The distributional pattern of the peracarids (based on the abundance matrix) was correlated with the environmental variables by matching samples' similarities using the Spearman rank correlation. This analysis showed that the combination of variables that best explains the patterns of distribution is hydrodynamism and siltation (rs = 0.665). Of the species considered the amphipods Ischyrocerus inexpectatus, Jassa marmorata and Podocerus variegatus were negatively correlated with hydrodynamism and positively with temperature. The caprellidea Phtisica marina was also negatively correlated with hydrodynamism. On the other hand, the amphipods Cressa mediterranea and Stenothoe dollfusi preferred environments with high hydrological forces and low sedimentation rate. Due to the particular environmental conditions where they live and their requirements, Gammaropsis maculata, Corophium acutum, J. marmorata, I. inexpectatus, and P. variegatus were categorised as good indicator species in port environments. Others such as Aora spinicornis, Microjassa cumbrensis, and C. mediterranea were categorised as species well adapted to high hydrological forces.Se han estudiado las relaciones entre la distribución y abundancia de la fauna de peracáridos asociados al briozoo Bugula neritina con el estrés medioambiental producido en la costa de la Bahía de Algeciras. La variabilidad espacial del estrés medioambiental a lo largo de la Bahía de Algeciras se ha establecido en base a cinco variables abióticas (hidrodinamismo, sedimentación, materia orgánica disuelta en el agua, sólidos en suspensión y la materia orgánica de dichos sólidos en suspensión) a lo largo de seis estaciones de muestreo durante 12 meses de estudio. La temporalidad de las variables medioambientales no se ha estudiado debido al método de muestreo utilizado para éstas. Sin embargo, se calcularon mensualmente tanto la abundancia como la diversidad beta de la fauna de peracáridos en cada una de las estaciones. El hidrodinamismo fue la única variable abiótica correlacionada significativamente con la diversidad beta, existiendo una relación lineal entre ambas variables (r = 0.81). El patrón de distribución de los peracáridos (basado en la matriz de abundancia) se relacionó con las variables abióticas usando el coeficiente de correlación de Spearman. Este análisis determinó que las variables que mejor explican los patrones de distribución de los peracáridos son el hidrodinamismo y la sedimentación (rs = 0.665). Entre las especies consideradas, los anfípodos Ischyrocerus inexpectatus, Jassa marmorata y Podocerus variegatus se correlacionaron negativamente con el hidrodinamismo y positivamente con la temperatura. El caprélido Phtisica marina también estuvo relacionado negativamente con el hidrodinamismo. Por el contrario, los anfípodos Cressa mediterranea y Stenothoe dollfusi prefirieron hábitats con un fuerte hidrodinamismo y baja sedimentación. Debido a las condiciones ambientales particulares en las que estas especies viven y en base a sus necesidades alimentarias, Gammaropsis maculata, Corophium acutum, J. marmorata, I. inexpectatus, y P. variegatus han sido catalogadas como especies indicadoras de ambientes portuarios. Otras como Aora spinicornis, Microjassa cumbrensis y C. mediterranea se han considerado especies bien adaptadas a hábitats con fuerte hidrodinamismo

Spanish university radios: Plural, open and participative

El objetivo principal de este artículo es presentar el impacto de Internet y su entorno digital en el modelo de las radios universitarias en España, desde el enfoque y definición de las páginas web analizadas. Comprobamos la capacidad y facilidad de subida, descarga, búsqueda e intercambio informativo en todos los procesos interactivos, lo que posibilita, mejora y amplía su labor educomunicativa, al romper sus barreras institucionales y espacio-temporales, para trasladarse, desde una perspectiva horizontal, al encuentro con la participación ciudadana.The main objective of this article is to analyze the impact of the Internet and the digital environment on the model of University radios in Spain, from the definition and focus on the analyzed web pages. We check the load capacity and ease of upload, download, search and information exchange in all interactive processes. All this enables, improves and expand its educommunication works breaking down institutional barriers and space-temporary, for move, from a horizontal perspective, to meet with citizen participation

Carbohydrate Analysis by NIRS-Chemometrics

Near-infrared spectroscopy (NIRS) is a high-throughput, low-cost, solvent-free, and nondestructive analytical tool. Chemometrics is the science that employs statistical and mathematical methods to explain near-infrared spectra; it has been proven that when they are coupled, their effectiveness highly improved in-depth carbohydrate characterization. This chapter focuses on the fundamentals of near-infrared spectroscopy in the study of carbohydrates, as well as the application of partial least squares regression (PLSR) and principal component analysis (PCA), as the most useful chemometric techniques involved in carbohydrate analysis. The theoretical aspects and practical applications starting from simple to complex carbohydrates mixtures are covered. Indeed, the contributions from different fields extend the implementation of near-infrared spectroscopy from industrial quality control to scientific research

New records of copepods associated with marine invertebrates from the Strait of Gibraltar and nearby areas

In this work, 16 species of commensal or parasitic copepods associated with marine invertebrates from the Strait of Gibraltar are recorded. Eleven species are included into the order Cyclopoida, three into Poecilostomatoida, one into Siphonostomatoida, and another into a family incertae sedis. They have been found mainly associated with Ascidians, but also in Pelecypods, Polychaetes, Opisthobranch molluscs, Ophiuroids and Anthozoans. Among these, 13 are new records for the Iberian peninsula fauna, and three are also new for the African coasts. Moreover five species, Haplostomella malacocera Chatton & Harant, 1924; Haplostomella tuberculata Chatton & Harant, 1924; Periproctia falsiarcuata Stock, 1967; Anthessius arcuatus López-González, Conradi, Naranjo & García-Gómez, 1992 and Botryllophilus conicus Conradi, López-González & García-Gómez, 1994, are recorded for the first time since their original descriptions. Furthermore, new hosts and bathymetrical data of most of the species are provided

Evaluation of a Vein Biometric Recognition System on an Ordinary Smartphone

Nowadays, biometrics based on vein patterns as a trait is a promising technique. Vein patterns satisfy universality, distinctiveness, permanence, performance, and protection against circumvention. However, collectability and acceptability are not completely satisfied. These two properties are directly related to acquisition methods. The acquisition of vein images is usually based on the absorption of near-infrared (NIR) light by the hemoglobin inside the veins, which is higher than in the surrounding tissues. Typically, specific devices are designed to improve the quality of the vein images. However, such devices increase collectability costs and reduce acceptability. This paper focuses on using commercial smartphones with ordinary cameras as potential devices to improve collectability and acceptability. In particular, we use smartphone applications (apps), mainly employed for medical purposes, to acquire images with the smartphone camera and improve the contrast of superficial veins, as if using infrared LEDs. A recognition system has been developed that employs the free IRVeinViewer App to acquire images from wrists and dorsal hands and a feature extraction algorithm based on SIFT (scale-invariant feature transform) with adequate pre- and post-processing stages. The recognition performance has been evaluated with a database composed of 1000 vein images associated to five samples from 20 wrists and 20 dorsal hands, acquired at different times of day, from people of different ages and genders, under five different environmental conditions: day outdoor, indoor with natural light, indoor with natural light and dark homogeneous background, indoor with artificial light, and darkness. The variability of the images acquired in different sessions and under different ambient conditions has a large influence on the recognition rates, such that our results are similar to other systems from the literature that employ specific smartphones and additional light sources. Since reported quality assessment algorithms do not help to reject poorly acquired images, we have evaluated a solution at enrollment and matching that acquires several images subsequently, computes their similarity, and accepts only the samples whose similarity is greater than a threshold. This improves the recognition, and it is practical since our implemented system in Android works in real-time and the usability of the acquisition app is high.MCIN/AEI/ 10.13039/50110001103 Grant PDC2021-121589-I00Fondo Europeo de Desarrollo Regional (FEDER) and Consejería de Transformación Económica, Industria, Conocimiento y Universidades de la Junta de Andalucía Grant US-126514