Spatial distribution of introduced brook trout Salvelinus fontinalis (Salmonidae) within alpine lakes: evidences from a fish eradication campaign

Brook trout Salvelinus fontinalis have been used worldwide to stock fishless alpine lakes, negatively affecting native biota. Understanding its spatial ecology in invaded ecosystems can provide information to interpret and contrast its ecological impact. We opportunistically used capture points of brook trout gillnetted during an eradication campaign to assess the distribution patterns of four unexploited populations inhabiting high-altitude lakes. The main eradication method implies the use of many gillnets with several mesh sizes, which are selective for different fish sizes. For each lake we drew six capture maps associated with as many different mesh sizes, and we tested whether the distance from the coastline (which in alpine lakes is a reliable proxy of the most important spatial gradients, e.g. depth, temperature, prey availability, lighting conditions) influences the proportion of captured fish belonging to different size classes and the number of fish captured by the nets with different mesh sizes. To interpret the results, we also provide a cartographic description of the lakes’ bathymetry and littoral microhabitats. We found (1) a negative relationship between brook trout distribution and the distance from the coastline in all of the size classes, lakes and mesh sizes; (2) that large brook trout can thrive in the lakes’ center, while small ones are limited to the littoral areas; and (3) that the distance from the coastline alone cannot explain all the differences in the catch densities in different parts of the lakes. As in their native range, introduced brook trout populations also have littoral habits. Microhabitats, prey availability and distance from the spawning ground are other likely factors determining the distribution patterns of brook trout populations introduced in alpine lakes. The obtained results also provide useful information on how to plan new eradication campaigns

Non-equilibrium Phase Transitions: Activated Random Walks at Criticality

In this paper we present rigorous results on the critical behavior of the Activated Random Walk model. We conjecture that on a general class of graphs, including Z d , and under general initial conditions, the system at the critical point does not reach an absorbing state. We prove this for the case where the sleep rate λ is infinite. Moreover, for the one-dimensional asymmetric system, we identify the scaling limit of the flow through the origin at criticality. The case λ < +∞ remains largely open, with the exception of the one-dimensional totally-asymmetric case, for which it is known that there is no fixation at criticality.Fil: Cabezas, M.. Conselho Nacional de Desenvolvimiento Cientf y Tec. Associacao Instituto Nacional de Matemática Pura E Aplicada; BrasilFil: Trivellato Rolla, Leonardo. Conselho Nacional de Desenvolvimiento Cientf y Tec. Associacao Instituto Nacional de Matemática Pura E Aplicada; Brasil. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sidoravicius, V.. Conselho Nacional de Desenvolvimiento Cientf y Tec. Associacao Instituto Nacional de Matemática Pura E Aplicada; Brasi

Multidisciplinary Clinical Protocol of Management of Hypersensitivity* Reactions to Contrast Media in Radiology

Acute hypersensitivity reactions to contrast media(AHRC) are infrequent, usually mild but potentially fatal. Although there are recommendations from Radiology, Intensive Care and Allergology fields regarding its management, a clinical multidisciplinary protocol that integrates these complementary approaches is missing. We aimed to elaborate a protocol that includes adverse reactions definition and classification; identification of risk factors and management of patients with AHRC. A non systematic revision of national and international guidelines was made regarding the management of hypersensitivity reactions, in order to elaborate a clinical consensus protocol to be used in different medical fields (Radiology, Allergology and Intensive Care). Non-renal adverse contrast reactions can be classified in chemotoxic (related to contrast chemical properties) and hypersensitivity reactions (with involvement of immunological mediators IgE and non IgE mediated); and in mild, moderate and severe (regarding severity), with different therapeutic approaches. Identified risk factors are previous contrast media reaction and asthma. Pre-medication decreases the probability of symptoms but does not exclude the possibility of a severe reaction. Patients suspected of AHRC should be observed in an allergy clinic to confirm the diagnosis and find an alternative contrast media. Clinical alert record as well as the notification of reaction to surveillance system of adverse drug reactions should be performed. This clinical expert’s protocol consensus based on national and international guidelines aims to be a valuable practical tool in the management of patients that need contrast media during a radiologic exam

Host genetics and gut microbiome: Perspectives for multiple sclerosis

As a complex disease, Multiple Sclerosis (MS)’s etiology is determined by both genetic and environmental factors. In the last decade, the gut microbiome has emerged as an important environmental factor, but its interaction with host genetics is still unknown. In this review, we focus on these dual aspects of MS pathogenesis: we describe the current knowledge on genetic factors related to MS, based on genome-wide association studies, and then illustrate the interactions between the immune system, gut microbiome and central nervous system in MS, summarizing the evidence available from Experimental Autoimmune Encephalomyelitis mouse models and studies in patients. Finally, as the understanding of influence of host genetics on the gut microbiome composition in MS is in its infancy, we explore this issue based on the evidence currently available from other autoimmune diseases that share with MS the interplay of genetic with environmental factors (Inflammatory Bowel Disease, Rheumatoid Arthritis and Systemic Lupus Erythematosus), and discuss avenues for future research

History of Archeological Investigations at Palo Duro Canyon State Park

Palo Duro Canyon has been an important locale for human occupation with its distinct topography, fauna, and flora from the Paleoindian inhabitants to those of the Historic Period. There is archeological evidence of human habitation at Palo Duro Canyon throughout the past 12 millennia. Native Americans who lived in and around the canyon had access to resources not easily found on the adjoining upland plains. The canyon provided an abundance of sheltered camping and year-round supply to water, wood, stone tool materials, game, and wild plant resources. The bordering uplands, covered with grass and dotted with playa lakes, afforded campsites with good visibility and access to game such as bison, antelope, and waterfowl. This article reviews the history of archaeological work conducted at Palo Duro Canyon State Park since the park opened in 1934. It examines how evolving site recording standards, archaeological methods, and construction projects have influenced the types of archaeological investigations that have been conducted within the park over time. These investigations have occurred within the context of larger changes to the discipline and, more recently, expansions to the original park boundaries. Together, they help elucidate on the rich history of human occupation in the region

Valuasi Sumberdaya Air (Studi Kasus Kawasan Mata Air Tataneyan di Kelurahan Kinilow I, Kecamatan Tomohon Utara, Kota Tomohon)

This study aims to determine how how big the valuations of water in the spring Tataneyan located in the Village Kinilow I, District of North Tomohon, Tomohon, by using the concept of economic valuation to calculate the value of the utilization of water resources directly or indirectly. This study was conducted from October to December 2016, using primary and secondary data with sampling technique simple random sampling method and the respondents as many as 30 people. Analysis of the data used is quantitative analysis to identify the value of the value of benefits in the area of water resources in the waters Tataneyan value direct use for domestic households and public bath are also value the presence of fish breeding and agricultural irrigation water spinach. The results showed that the area of the springs Tataneyan have a total economic benefit value of Rp. 1.586.715.372/year. By calculating the average value of the obtained surplus WTP consumers showed the overall consumer receives more benefits than the actual price that is able to pay in exploiting springs Tataneyan. The total value of economic benefits can be used as a reference for local communities in the utilization and management of water in the spring Tataneyan

Omineca Miner, January, 02, 1915

BACKGROUND AND AIMS: Immature platelet fraction (IPF) represents the quote of younger and larger sized circulating platelets, a potential marker of platelet reactivity and major cardiovascular events. We aimed to assess the relationship between IPF levels and the prevalence and extent of coronary artery disease (CAD) in patients undergoing coronary angiography. METHODS: A cohort of consecutive patients undergoing coronary angiography in a single centre were included. Significant CAD was defined as at least 1 vessel stenosis >50%, while severe CAD was defined as left main and/or three-vessel disease. IPF levels were measured at admission by routine blood cells count (A Sysmex XE-2100). RESULTS: We included 1789 patients, divided according to quartiles values of IPF. IPF levels were directly related to active smoke (p = 0.02), and non-acute coronary syndrome as indication to angiography (p < 0.001), higher levels of haemoglobin and uric acid (p < 0.001, respectively) and lower platelet count (p = 0.003). Angiographic features did not significantly differ according to quartiles values of IPF, but for a lower degree of TIMI flow in patients with a higher percentage of reticulated platelets (p = 0.01) and a higher rate of lesions involving bifurcations (p = 0.05). IPF levels did not affect the prevalence of CAD (77% vs. 82.2% vs. 79.1% vs. 75.6%, p = 0.34, adjusted OR [95% CI] = 0.93 [0.82-1.05], p = 0.22), nor of severe left main/three-vessel CAD (28.5% vs. 34.4% vs. 32.2% vs. 33.1%, p = 0.27; adjusted OR [95% CI] = 0.99 [0.90-1.1], p = 0.88). CONCLUSIONS: The present study shows that among patients undergoing coronary angiography, the immature platelet fraction (IPF) is not associated with the prevalence and extent of coronary artery disease, and, therefore, should not be overlooked as a marker of coronary atherosclerosis