The Ranging Costs of a Fallback Food: Liana Consumption Supplements Diet but Increases Foraging Effort in Howler Monkeys

Lianas are important components in the dynamics of tropical forests and represent fallback foods for some primates, yet little is known about their impact on primate ecology, behavior or fitness. Using 2 yr of field data, we investigated liana consumption and foraging effort in four groups of howler monkeys (two in bigger, more conserved forest fragments and two in smaller, less conserved fragments) to assess whether howler monkeys use lianas when and where food availability is scarce, and how liana consumption is related to foraging effort. Howler monkeys in smaller fragments spent more time consuming lianas and liana consumption was negatively related to the consumption of preferred food resources (fruit and Ficus spp.). Further, travel time was positively related to liana feeding time, but not to tree feeding time, and howler monkeys visited a greater number of food patches when feeding from liana leaves than when feeding from tree leaves. Our results suggest that these increases in foraging effort were related to the fact that lianas are mainly a source of leaves, and that liana patch size was probably smaller than tree patch size. While these results were clear when analyzing all four groups combined, however, they were not always significant in each of the groups individually. We suggest that this may be related to the differences in group size, patch size and the availability of resources among groups. Further studies are necessary to assess whether these dietary and behavioral adjustments negatively impact on the fitness and conservation of primates in fragments

Excavaciones arqueológicas en el exterior de los conjuntos rupestres de Las Gobas (Laño, Burgos)

The archaeological intervention conducted at Las Gobas (Laño, County of Treviño, Spain) is part of a line of research led by the Building Archaeology Research Group (UPV-EHU) aimed at studying the configuration of the rural habitat in Late Antiquity and the Early Middle Ages. The results achieved have allowed the documentation of a rich stratigraphic sequence that starts between the seventh and eigth centuries A.D. and preserves historical information of the first order. Broadly speaking, we can say that the seventh century A.D. saw the first cave spaces being opened up, later followed by some independent buildings set on a slope near the earlier settlements. Towards the ninth century, the space was subject to a profound reorganisation, during which the cave complex was abandoned as a dwelling place and recovered as a burial area. This funerary space seems to have remained active until the eleventh century, but archaeological investigation has not detected any other activity until the sixteenth century, when the site was reoccupied, this time for agricultural use, in a widespread process involving bringing the valley sides under the plough.La intervención arqueológica efectuada en Las Gobas (Laño, Condado de Treviño) se enmarca en una línea de investigación desarrollada por el Grupo de Investigación en Arqueología de la Arquitectura (UPV-EHU) que tiene por objeto el estudio de la configuración del hábitat rural en época tardoantigua y altomedieval. Los resultados alcanzados han permitido documentar una rica secuencia estratigráfica que, iniciada a caballo entre los siglos VII y VIII d.C., conserva una información histórica de primer orden. A grandes rasgos, podemos afirmar que a lo largo del siglo VII d.C. se abren ya las primeras cavidades rupestres, a las que sucederán en el tiempo algunas edificaciones exentas construidas contra ladera a los pies de las anteriores. Hacia el siglo IX, el espacio sufrirá una profunda reorganización, al abandonarse el complejo rupestre como lugar de habitación y reocuparse como área cementerial. Este espacio funerario parece mantenerse en activo hasta el siglo XI, sin que el registro arqueológico detecte ninguna otra actividad hasta el siglo XVI, momento en que el lugar volverá a ser ocupado, esta vez con un uso agrícola, dentro de un importante proceso roturador de las laderas del valle

Evolutionary trade-off between vocal tract and testes dimensions in howler monkeys.

Males often face a trade-off between investments in precopulatory and postcopulatory traits [1], particularly when male-male contest competition determines access to mates [2]. To date, studies of precopulatory strategies have largely focused on visual ornaments (e.g., coloration) or weapon morphology (e.g., antlers, horns, and canines). However, vocalizations can also play an important role in both male competition and female choice [3-5]. We investigated variation in vocal tract dimensions among male howler monkeys (Alouatta spp.), which produce loud roars using a highly specialized and greatly enlarged hyoid bone and larynx [6]. We examined the relative male investment in hyoids and testes among howler monkey species in relation to the level of male-male competition and analyzed the acoustic consequences of variation in hyoid morphology. Species characterized by single-male groups have large hyoids and small testes, suggesting high levels of vocally mediated competition. Larger hyoids lower formant frequencies, probably increasing the acoustic impression of male body size and playing a role analogous to investment in large body size or weaponry. Across species, as the number of males per group increases, testes volume also increases, indicating higher levels of postcopulatory sperm competition, while hyoid volume decreases. These results provide the first evidence of an evolutionary trade-off between investment in precopulatory vocal characteristics and postcopulatory sperm production.We are grateful to Alexander Sliwa, Catalina Gomez, Robert Wallace, Michael Plavkan, Zelinda Braga Hirano, and Julio Cesar de Souza, Jr. for sharing data, Andrew Kitchener (National Museums Scotland) for loaning whole animal specimens, Michaela Gumpenberger and Jaap Saers for support with CT and MRI, Carolyn M. Crockett, Mariana Raño, and La Senda Verde Animal Refuge Bolivia for providing photographs and videos, Nadja Kavcik for help with the figures, and Dieter Lukas for help with statistical analyses. J.C.D. was funded by a Cambridge Humanities Research Grant. W.T.F. acknowledges support of ERC Advanced Grant SOMACCA (#230604) and Austrian Science Fund (FWF) grant W1234-G17.This is the final version of the article. It was first available from Elsevier via http://dx.doi.org/10.1016/j.cub.2015.09.02

Hábitos y valores del alumnado en centros de primaria de alta eficacia escolar

Diversas investigaciones concluyen que la educación en valores es una parte inseparable de la enseñanza efi caz y que se vincula con mejoras en el aprendizaje y el bienestar emocional y social del alumnado. Este trabajo pretende encontrar evidencias de la relación entre la educación en valores y la efi cacia escolar en escuelas de primaria del País Vasco. Se plantea conocer los hábitos y valores del alumnado de centros eficaces, escuelas que obtienen una puntuación media superior a la esperable una vez controlados, mediante modelos jerárquicos lineales, los efectos de las variables contextuales, e identificar buenas prácticas en el área. Se aplicó un cuestionario a 391 estudiantes (51.9% chicos y 48.1% chicas) y se realizaron entrevistas semiestructuradas a los Equipos Directivos de tres de estos centros. Los resultados confirman que el alumnado tiene una valoración positiva de su nivel de adquisición de hábitos y valores, pero se encontraron diferencias significativas en función del sexo. Además, el aprendizaje cooperativo es la estrategia más utilizada para educar en valores en las aulas. Se concluye el trabajo con las implicaciones para la práctica educativa derivadas tanto de las diferentes percepciones sobre los hábitos y valores, como de una actuación estereotípica de los géneros.Multiple research works conclude that values education is essential for any effective teaching, helps to improve students´ learning and their socioemotional well-being. The objective of this work is to fi nd evidence of the relationship between values education and school effectiveness in elementary schools in the Basque Country. In addition, it will identify the habits and values of elementary school students enrolled in those effective schools with a higher mean score than could be expected once the effects of contextual variables have been monitored by linear hierarchical models, and will pinpoint good practices in the area. A questionnaire was distributed among 391 students (51.9% boys and 48.1% girls) and semistructured interviews were carried out with management teams from three of the schools. The results confi rm that students assess their learning of habits and values positively, but signifi cant differences were found depending on the gender of the participants. Cooperative learning is the strategy most commonly used to teach values in the classrooms. This study offers pedagogical consequences stemming from the different perceptions of habits and values, as well as from a stereotypical performance of the genders

Forest maturity has a stronger influence on the prevalence of spider monkeys than howler monkeys in an anthropogenically impacted rainforest landscape

[EN] The transformation and depletion of primary forest over the past few decades have placed almost half of the world's primate species under the threat of extinction. Developing any successful conservation program for primates requires distribution and demography data, as well as an understanding of the relationships between these factors and their habitat. Between March and June 2010 and 2011 we collected data on the presence and demographic parameters of howler and spider monkeys by carrying out surveys, and validated our findings using local knowledge. We then examined the relationship between forest type and the presence of these primates at 54 sites in the northern area of the Selva Zoque Corridor, Mexico. We detected 86 spider monkey groups across 31 plots and censused 391 individuals (mean +/- SD = 5.9 +/- 3.0 individuals per sub-group, n = 67 sub-groups). We also detected 69 howler monkey groups across 30 plots and censused 117 individuals (mean +/- SD = 5.3 +/- 2.4 individuals per group, n = 22 groups). Howler monkey presence was not related to any specific vegetation type, while spider monkeys were present in areas with a higher percentage of tall forest (trees > 25 m high). Overall, spider monkeys were more prevalent than howler monkeys in our sampling sites and showed demographic characteristics similar to those in better protected areas, suggesting that the landscape features in the Uxpanapa Valley are suitable for their needs. Conversely, howler monkey presence was found to be more limited than in other regions, possibly due to the extended presence of spider monkeys.We thank the National Council of Science of Technology (CONACyT) and the Veracruz State Government for providing financial support to the project (grant no. 108990). ASG received support from Bournemouth University, the Centro de Investigaciones Tropicales and CONACyT (registration 195409) to conduct all the data analysis as part of her PhD. JCD received funding from the Isaac Newton Trust. We thank C. A. Munoz-Robles for providing the base map of the study site. We are very grateful to the communities of the Uxpanapa Valley for helping us throughout the development of this project. We are grateful to Dr Bicca-Marques and to two anonymous reviewers for their comments, which greatly helped in improving this manuscript. This study complied with the legal requirements of Mexico (SEMARNAT-DGVS/03660/11) and was approved by Universidad Veracruzana

The metabolic regimes of 356 rivers in the United States

A national-scale quantification of metabolic energy flow in streams and rivers can improve understanding of the temporal dynamics of in-stream activity, links between energy cycling and ecosystem services, and the effects of human activities on aquatic metabolism. The two dominant terms in aquatic metabolism, gross primary production (GPP) and aerobic respiration (ER), have recently become practical to estimate for many sites due to improved modeling approaches and the availability of requisite model inputs in public datasets. We assembled inputs from the U.S. Geological Survey and National Aeronautics and Space Administration for October 2007 to January 2017. We then ran models to estimate daily GPP, ER, and the gas exchange rate coefficient for 356 streams and rivers across the continental United States. We also gathered potential explanatory variables and spatial information for cross-referencing this dataset with other datasets of watershed characteristics. This dataset offers a first national assessment of many-day time series of metabolic rates for up to 9 years per site, with a total of 490,907 site-days of estimates.We thank Jill Baron and the USGS Powell Center for financial support for this collaborative effort (Powell Center Working Group title: "Continental-scale overview of stream primary productivity, its links to water quality, and consequences for aquatic carbon biogeochemistry"). Additional financial support came from the USGS NAWQA program and Office of Water Information. NSF grants DEB-1146283 and EF1442501 partially supported ROH. A post-doctoral grant from the Basque Government partially supported MA. NAG was supported by the U.S. Department of Energy's Office of Science, Biological and Environmental Research. Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725. Leah Colasuonno provided expert logistical support of our working group meetings. The developers of USGS ScienceBase were very helpful both in hosting this dataset and in responding to our requests. Randy Hunt and Mike Fienen of the USGS Wisconsin Modeling Center graciously provided access to their HTCondor cluster. Mike Vlah provided detailed and insightful reviews of the data and metadata

Identifying SARS-CoV-2 'memory' NK cells from COVID-19 convalescent donors for adoptive cell therapy

COVID-19 disease is the manifestation of syndrome coronavirus 2 (SARS-CoV-2) infection, which is causing a worldwide pandemic. This disease can lead to multiple and different symptoms, being lymphopenia associated with severity one of the most persistent. Natural killer cells (NK cells) are part of the innate immune system, being fighting against virus-infected cells one of their key roles. In this study, we determined the phenotype of NK cells after COVID-19 and the main characteristic of SARS-CoV-2-specific-like NK population in the blood of convalescent donors. CD57+ NKG2C+ phenotype in SARS-CoV-2 convalescent donors indicates the presence of 'memory'/activated NK cells as it has been shown for cytomegalovirus infections. Although the existence of this population is donor dependent, its expression may be crucial for the specific response against SARS-CoV-2, so that, it gives us a tool for selecting the best donors to produce off-the-shelf living drug for cell therapy to treat COVID-19 patients under the RELEASE clinical trial (NCT04578210)

Nomogram-based prediction of survival in patients with advanced oesophagogastric adenocarcinoma receiving first-line chemotherapy: a multicenter prospective study in the era of trastuzumab

Background: To develop and validate a nomogram and web-based calculator to predict overall survival (OS) in Caucasian-advanced oesophagogastric adenocarcinoma (AOA) patients undergoing first-line combination chemotherapy. Methods: Nine hundred twenty-four AOA patients treated at 28 Spanish teaching hospitals from January 2008 to September 2014 were used as derivation cohort. The result of an adjusted-Cox proportional hazards regression was represented as a nomogram and web-based calculator. The model was validated in 502 prospectively recruited patients treated between October 2014 and December 2016. Harrell's c-index was used to evaluate discrimination. Results: The nomogram includes seven predictors associated with OS: HER2-positive tumours treated with trastuzumab, Eastern Cooperative Oncology Group performance status, number of metastatic sites, bone metastases, ascites, histological grade, and neutrophil-to-lymphocyte ratio. Median OS was 5.8 (95% confidence interval (CI), 4.5–6.6), 9.4 (95% CI, 8.5–10.6), and 14 months (95% CI, 11.8–16) for high-, intermediate-, and low-risk groups, respectively (P<0.001), in the derivation set and 4.6 (95% CI, 3.3–8.1), 12.7 (95% CI, 11.3–14.3), and 18.3 months (95% CI, 14.6–24.2) for high-, intermediate-, and low-risk groups, respectively (P<0.001), in the validation set. The nomogram is well-calibrated and reveals acceptable discriminatory capacity, with optimism-corrected c-indices of 0.618 (95% CI, 0.591–0.631) and 0.673 (95% CI, 0.636–0.709) in derivation and validation groups, respectively. The AGAMENON nomogram outperformed the Royal Marsden Hospital (c-index=0.583; P=0.00046) and Japan Clinical Oncology Group prognostic indices (c-index=0.611; P=0.03351). Conclusions: We developed and validated a straightforward model to predict survival in Caucasian AOA patients initiating first-line polychemotherapy. This model can contribute to inform clinical decision-making and optimise clinical trial design