White-crested elaenias (Elaenia albiceps chilensis) breeding across Patagonia exhibit similar spatial and temporal movement patterns throughout the year.

For migratory birds, events happening during any period of their annual cycle can have strong carry-over effects on the subsequent periods. The strength of carry-over effects between non-breeding and breeding grounds can be shaped by the degree of migratory connectivity: whether or not individuals that breed together also migrate and/or spend the non-breeding season together. We assessed the annual cycle of the White-crested Elaenia (Elaenia albiceps chilensis), the longest-distance migrant flycatcher within South America, which breeds in Patagonia and spends the non-breeding season as far north as Amazonia. Using light-level geolocators, we tracked the annual movements of elaenias breeding on southern Patagonia and compared it with movements of elaenias breeding in northern Patagonia (1,365 km north) using Movebank Repository data. We found that elaenias breeding in southern Patagonia successively used two separate non-breeding regions while in their Brazilian non-breeding grounds, as already found for elaenias breeding in the northern Patagonia site. Elaenias breeding in both northern and southern Patagonia also showed high spread in their non-breeding grounds, high non-breeding overlap among individuals from both breeding sites, and similar migration phenology, all of which suggests weak migratory connectivity for this species. Elucidating the annual cycle of this species, with particular emphasis on females and juveniles, still requires further research across a wide expanse of South America. This information will be critical to understanding and possibly predicting this species' response to climate change and rapid land-use changes.

Validación del inventario de socialización organizacional en México

Objetivo: Generar una versión válida y confiable en población mexicana del inventario de socialización organizacional de taormina (OSI), validada por Bravo-Sánz (2001). Método: A partir de los puntajes obtenidos en el OSI se realizó en AMOS 23,0 un análisis factorial confirmatorio con máxima verosimilitud con los 20 ítems y factores originales (entrenamiento, apoyo de los compañeros, comprensión y perspectivas de futuro). La muestra se compuso por 489 trabajadores con una media de edad de 36 años. Resultados: Los resultados del AFC mostraron que, aunque el modelo se ajustaba de forma adecuada con los ítems originales, la validez y confiabilidad de constructo solo se obtuvieron al disminuir la cantidad de factores desechando el de comprensión. Se obtuvo un ajuste de modelo CMIN/DF= 2,02, CFI=0,97, AGFI= 0,94, RMSEA 0,046, SRMR 0,038. Conclusiones: Se logró un modelo válido (AVE >0,50) en todos sus factores y confiable (CR>0,74) en todos sus elementos con un total de 11 ítems con sus baremos para población. Esta versión del inventario de socialización puede ser empleada en población mexicana, lo cual incidirá en investigaciones organizacionales, administrativas, psicológicas con diversas temáticas para determinar la adaptación a la cultura organizacional.

Objective: The objective of this research was to generate a valid and reliable version of the taormina organizational socialization inventory (OSI) for the Mexican population, validated by Bravo-Sánz (2001). Method: Based on the scores obtained in the OSI, a confirmatory factor analysis was carried out in AMOS 23,0 with maximum likelihood with the 20 original items and factors (training, peer support, understanding and future perspectives). The sample was made up of 489 workers with a mean age of 36 years. Results: The results of the CFA showed that, although the model adjusted adequately with the original items, the validity and reliability of the construct were only obtained by reducing the number of factors, discarding the comprehension factor. A model fit CMIN/DF= 2,02, CFI=0,97, AGFI= 0,94, RMSEA 0,046, SRMR .038 was obtained. Conclusions: A valid model (AVE >0,50) was achieved in all its factors and a reliable one (CR>0,74) in all its elements with a total of 11 items with their scales for the population. This version of the socialization inventory can be used in the Mexican population, which will affect organizational, administrative, psychological research with various themes to determine adaptation to organizational culture.

Are Tourists Facilitators of the Movement of Free-Ranging Dogs?

Dogs are the most abundant carnivores on earth and, as such, negatively impact wildlife. Free-ranging dogs roam in many protected areas, which in turn are often tourist destinations. Whether tourists influence their roaming is largely unexplored but highly relevant to wildlife conservation. To address this question, we obtained (i) 81 completed questionnaires from tourists on their experience with free-ranging dogs in the remote Cape Horn Biosphere Reserve, Chile, and (ii) photographs of three camera-traps placed next to trekking trails (n = 87 trap days). A third of the participants were followed by dogs for up to four days, and 39% saw free-ranging dogs on their hikes, but neither feeding dogs nor fear of them had any influence on whether tourists were followed by dogs. Camera-traps yielded 53 independent dog sequences, recorded 32 individuals plus 14 unidentified dogs, of which only one was leashed, with a frequency of one dog every 28th person. In 17% of 53 sequences, dogs were photographed together with hikers carrying large backpacks for several-day trips. We conclude that tourists are facilitators for the movement of dogs and highlight the importance of the engagement of the tourism sector in wildlife conservation in and close to protected areas.

Exposición y Desensibilización a la Violencia en Jóvenes Mexicanos en Distintos Contextos Sociales / Exposure and Desensitization to Violence among Mexican Youth from Different Social Contexts

Resumen El objetivo fue conocer la exposición y desensibilización a la violencia en jóvenes de cinco contextos en distintas instituciones educativas y de readaptación social de la ciudad de San Luis Potosí. Método: se realizó un estudio analítico transversal comparativo de 25 instituciones de educación media superior, ubicados en Zonas Rurales (ZR), en Polígonos de Violencia (PV), Cercanas a Polígonos de Violencia (CPV), en Zonas Alejadas de los Polígonos de Violencia (ZAPV), y en un Centro de Internamiento Juvenil (CIJ) con un total de 1720 participantes; 851 (49.5 %) hombres y 869 (50.5%) mujeres. Resultados: Se encontraron medias significativamente más altas en desensibilización a la violencia en participantes del CIJ, seguidos por participantes de las ZAPV, y al final el ZR. Referente a la exposición a la violencia fue mayor en aquellos provenientes de las ZAPV después en jóvenes del CIJ y finalmente los de ZR. Conclusiones: La desensibilización a la violencia se presenta como consecuencia a la exposición de la violencia y las conductas que atentan contra la seguridad social. Finalmente, se encontró que las actividades artísticas y los padres unidos funcionan como factores de protección contra la desensibilización a la violencia.

Abstract The aim of this research was to measure the exposure and desensitization to violence in young people from five contexts in different educational institutions and a Juvenile Detention Center in the city of San Luis Potosí and its surroundings in Mexico. Desensitization to violence is a phenomenon that is generated due to constant exposure to violence, resulting in a decrease in emotional responses, adverse judgments, and opposition to violent acts, it can lead to a normalization of violent acts and with it a minimization of their seriousness, which promotes positive emotions in the individual such as pleasure, fun or entertainment when exposed to said acts or events. Method: a comparative cross-sectional analytical study was carried out in 25 institutions of higher secondary education, located in rural areas and in polygons identified as violent, near to polygons and far from them, and in a Juvenile Detention Center with a total of 1720 male participants. Results: Significantly higher means were found in desensitization to violence in participants from the internment center, later from those of the areas that were initially identified as far from the polygons of violence, and finally the lowest in the rural context. Regarding exposure to violence, it was higher in those participants far from the polygons of violence, then in young people from the internment center, and finally those from the rural context. In addition, of the three areas analyzed, lower levels of schooling were found in people in a situation of internment. Conclusions: Desensitization to violence occurs as a consequence of exposure to violence and behaviors that threaten social security. Also, it was found that artistic activities and being part of a family, with father and mother together, worked as a protective factor against desensitization to violence. Some plausible explanations for these findings are suggested.

Predicting malignancy in small testicular lesions.

Introduction: Small testicular lesions ≤20 mm (STL) detected by ultrasound (US), usually non-palpable, have been reported to be benign in up to 80% of cases. Thus, partial orchiectomy with or without frozen section examination and surveillance has been advocated for these kinds of lesions. We seek to report the proportion of benign lesions in testicular tumors ≤20 mm detected by US in our population and explore the predicting factors of malignancy. Material and methods: A retrospective descriptive study of orchiectomies performed for testicular tumors in patients older than 15 years between 2005 and 2019 was performed, including all patients with lesions ≤20 mm on US imaging. Results: A total of 70 patients with STL were included (mean age 34.6 ±10.8 years). Overall, 69% of the lesions were malignant while the smallest lesions (≤10 mm) showed 61% of cancer. Moreover, in the subgroup of non-palpable lesions ≤10 mm, 50% were malignant. Multifocal tumors were found in 18 subjects with a malignancy rate of 88%. There was a significant association between maximum size on US, multifocality and malignancy. Neither tumor markers nor palpability foretold a malignant lesion. A predictive model including size and multifocality was created showing a positive predictive value of 83.3%. Conclusions: US maximum size and multifocality were predictors of malignancy in STL. However, even the smallest lesions showed a 50% chance of being malignant, thus surgery with or without intraoperative biopsy is warranted in most cases.

Violencia estructural, mujeres y conductas disruptivas en San Luis Potosí, México / Structural violence, women and disruptive behaviors in San Luis Potosi, Mexico / Violência estrutural, mulheres e comportamentos perturbadores em San Luis Potosí, México

El objetivo de esta investigación fue describir la violencia estructural en la que se desarrollan las conductas disruptivas enfatizando el contexto en el que se genera el aprendizaje social de las mismas, la forma en que se construye la sociedad favoreciendo el ejercicio y prácticas de violencia que afectan a la mujer y a las personas que se desenvuelven en México. Método: 489 personas contestaron la Escala de Conductas Disruptivas en adultos; 21 de las mujeres que alguna vez fueron detenidas. Resultados: se encontró un tamaño del efecto alto en conductas disruptivas en aquellas personas que se juntaron con pandillas, el doble de consumo de sustancias psicoactivas en hombres en contraste con mujeres, así como mayores conductas disruptivas en quienes consumen sustancias ilegales o alcohol, también, el consumo de drogas y alcohol, así como la violencia vivida en la infancia presentan diferencias significativas en mujeres que han sido detenidas y aquellas que no. Discusión: los modelos de socialización, la violencia directa y estructural y la cultura de la violencia aterrizada en el contexto social mexicano generan que tanto hombres como mujeres delincan; la generación de políticas públicas y el desafío a los roles de género tradicionales pueden ser elementos protectores.

The objective of this research was to describe the structural violence in which disruptive behaviors are developed, emphasizing the context in which the social learning of these behaviors is generated, the way in which society is constructed favoring the exercise and practices of violence that affect women and people in Mexico. Method: 489 people answered the Scale of Disruptive Behavior in Adults; 21 of the women who had ever been arrested. Results: we found a high effect size in disruptive behaviors in those who joined gangs, twice the consumption of psychoactive substances in men in contrast to women, as well as greater disruptive behaviors in those who consume illegal substances or alcohol, also, the consumption of drugs and alcohol, as well as violence experienced in childhood show significant differences in women who have been arrested and those who have not. Discussion: socialization models, direct and structural violence and the culture of violence in the Mexican social context cause both men and women to commit crimes; the generation of public policies and the challenge to traditional gender roles may be protective elements.

O objetivo desta pesquisa foi descrever a violência estrutural na qual os comportamentos perturbadores são desenvolvidos, enfatizando o contexto no qual o aprendizado social destes comportamentos é gerado, a forma como a sociedade é construída favorecendo o exercício e as práticas de violência que afetam as mulheres e as pessoas no México. Método: 489 pessoas responderam à Escala de Comportamentos Perturbadores em Adultos; 21 das mulheres já haviam sido presas. Resultados: encontramos um tamanho de efeito elevado para comportamentos perturbadores naqueles que aderiram a gangues, o dobro do uso de substâncias psicoativas em homens do que em mulheres, assim como comportamentos mais perturbadores naqueles que usam substâncias ilegais ou álcool, também, o uso de drogas e álcool, assim como a violência experimentada na infância mostram diferenças significativas nas mulheres que foram presas e naquelas que não o foram. Discussão: modelos de socialização, violência direta e estrutural e a cultura da violência no contexto social mexicano levam homens e mulheres a cometer crimes; a geração de políticas públicas e o desafio aos papéis tradicionais de gênero podem ser elementos protetores.

Evidence of endozoochory in upland geese Chloephaga picta and white-bellied seedsnipes Attagis malouinus in sub-Antarctic Chile.

Birds are known to act as potential vectors for the exogenous dispersal of bryophyte diaspores. Given the totipotency of vegetative tissue of many bryophytes, birds could also contribute to endozoochorous bryophyte dispersal. Research has shown that fecal samples of the upland goose (Chloephaga picta) and white-bellied seedsnipe (Attagis malouinus) contain bryophyte fragments. Although few fragments from bird feces have been known to regenerate, the evidence for the viability of diaspores following passage through the bird intestinal tract remains ambiguous. We evaluated the role of endozoochory in these same herbivorous and sympatric bird species in sub-Antarctic Chile. We hypothesized that fragments of bryophyte gametophytes retrieved from their feces are viable and capable of regenerating new plant tissue. Eleven feces disk samples containing undetermined moss fragments from C. picta (N = 6) and A. malouinus (N = 5) and six moss fragment samples from wild-collected mosses (Conostomum tetragonum, Syntrichia robusta, and Polytrichum strictum) were grown ex situ in peat soil and in vitro using a agar Gamborg medium. After 91 days, 20% of fragments from A. malouinus feces, 50% of fragments from C. picta feces, and 67% of propagules from wild mosses produced new growth. The fact that moss diaspores remained viable and can regenerate under experimental conditions following the passage through the intestinal tracts of these robust fliers and altitudinal and latitudinal migrants suggests that sub-Antarctic birds might play a role in bryophyte dispersal. This relationship may have important implications in the way bryophytes disperse and colonize habitats facing climate change.

Abdominal angiostrongyliasis, report of two cases and analysis of published reports from Colombia. / Abdominal angiostrongyliasis, report of two cases and analysis of published reports from Colombia

Abdominal angiostrongyliasis is a parasitic zoonosis, endemic in the American continent. Its etiological agent is Angiostrongylus costaricensis, a nematode whose definitive hosts are rats and other rodents and the intermediate hosts, slugs. Mammals acquire the infection by consuming vegetables contaminated with L3 larvae. The disease shows a heterogeneous clinical spectrum and given its low incidence its diagnosis is a great challenge. In Colombia, the first case was reported in 1979 and until 1998, only five additional cases have been reported. However, in the last two decades, no new cases were reported. Here we discuss two cases of children from Huila and Caquetá departments who developed the disease. Both cases required long in-patient care and multiple surgical interventions. The diagnosis was achieved by histopathological observation of parasitic elements inside the mesenteric arteries. One of the children died while the other fully recovered. We discuss the epidemiology, pathogenic cycle, clinical presentation, diagnosis, and prevention strategies of this disease paying particular attention to our patients' features and the Colombian context.

La angiostrongiloidiasis abdominal es una zoonosis parasitaria endémica en el continente americano. Su agente etiológico es el nematodo Angiostrongylus costaricensis, cuyos huéspedes definitivos son los roedores y, los intermediarios, los caracoles y las babosas, por lo que se adquiere al consumir vegetales contaminados con larvas en estadio 3. La presentación clínica es muy variada y, dada su rareza, su diagnóstico es un desafío. En Colombia el primer caso se reportó en 1979 y, desde entonces hasta 1998, se han informado cinco casos más, aunque en las últimas dos décadas no se había reportado ningún caso. Se describen aquí dos casos de angiostrongiloidiasis en niños provenientes de los departamentos de Huila y Caquetá que requirieron una larga hospitalización y múltiples intervenciones quirúrgicas. El diagnóstico se logró al observar en los especímenes quirúrgicos larvas and huevos cuya morfología sugería una infección por nematodos; uno de los pacientes murió y el otro se recuperó satisfactoriamente. Se discuten la epidemiología, la patogenia, la presentación clínica, el diagnóstico y las estrategias de prevención de esta parasitosis, con énfasis en las características particulares de los casos descritos y en el contexto colombiano.

Abdominal angiostrongyliasis, report of two cases and analysis of published reports from Colombia / Angiostrongiliasis abdominal, reporte de dos casos y análisis de los casos publicados en Colombia

Abdominal angiostrongyliasis is a parasitic zoonosis, endemic in the American continent. Its etiological agent is Angiostrongylus costaricensis, a nematode whose definitive hosts are rats and other rodents and the intermediate hosts, slugs. Mammals acquire the infection by consuming vegetables contaminated with L3 larvae. The disease shows a heterogeneous clinical spectrum and given its low incidence its diagnosis is a great challenge. In Colombia, the first case was reported in 1979 and until 1998, only five additional cases have been reported. However, in the last two decades, no new cases were reported. Here we discuss two cases of children from Huila and Caquetá departments who developed the disease. Both cases required long in-patient care and multiple surgical interventions. The diagnosis was achieved by histopathological observation of parasitic elements inside the mesenteric arteries. One of the children died while the other fully recovered. We discuss the epidemiology, pathogenic cycle, clinical presentation, diagnosis, and prevention strategies of this disease paying particular attention to our patients' features and the Colombian context.

La angiostrongiloidiasis abdominal es una zoonosis parasitaria endémica en el continente americano. Su agente etiológico es el nematodo Angiostrongylus costaricensis, cuyos huéspedes definitivos son los roedores y, los intermediarios, los caracoles y las babosas, por lo que se adquiere al consumir vegetales contaminados con larvas en estadio 3. La presentación clínica es muy variada y, dada su rareza, su diagnóstico es un desafío. En Colombia el primer caso se reportó en 1979 y, desde entonces hasta 1998, se han informado cinco casos más, aunque en las últimas dos décadas no se había reportado ningún caso. Se describen aquí dos casos de angiostrongiloidiasis en niños provenientes de los departamentos de Huila y Caquetá que requirieron una larga hospitalización y múltiples intervenciones quirúrgicas. El diagnóstico se logró al observar en los especímenes quirúrgicos larvas and huevos cuya morfología sugería una infección por nematodos; uno de los pacientes murió y el otro se recuperó satisfactoriamente. Se discuten la epidemiología, la patogenia, la presentación clínica, el diagnóstico y las estrategias de prevención de esta parasitosis, con énfasis en las características particulares de los casos descritos y en el contexto colombiano.

EAR MITES, OTODECTES CYNOTIS, ON WILD FOXES (PSEUDALOPEX SPP.) IN CHILE.

We found the ear mite parasite (Otodectes cynotis; Acari: Psoroptidae) in two distant insular endangered fox populations in Chile. We identified O. cynotis in both the Darwin's fox (Pseudalopex fulvipes) from Chiloé and the Fuegian culpeo (Pseudalopex culpaeus lycoides) in Tierra del Fuego. These populations are approximately 2,000 km apart. Infestation rates were high for both endemic foxes: 76% (19/25) of Darwin's foxes were affected, and 73% (11/15) of Fuegian culpeos had ear mites. Two Darwin's foxes had abundant ear discharge, and one of these also exhibited secondary infections of Morganella morganii and Geotrichum sp. fungi. Mites were characterized molecularly as Otodectes spp. for the Fuegian culpeo samples. Genetic analyses of two mites found the O. cynotis genotype I, as well as what appeared to be a new allele sequence for O. cynotis. These results confirmed the hypothesis of a worldwide distribution species of ear mite. Introduced chilla foxes (Pseudalopex griseus; n=11) on Tierra del Fuego Island and domestic dogs (Canis lupus familiaris; n=379) from both islands were also sampled, but they showed no signs of infection. Our findings provided insight into the genetic diversity, the origins, and the possible impact of this globally distributed mite on endemic free-ranging populations of foxes.

Propiedades psicométricas de la Escala de Violencia Psicológica en la Pareja / Psychometric properties of the Scale of Psychological Violence in the Couple

La violencia psicológica se define como cualquier acto intencional que daña la estabilidad psicológica de una persona. En el contexto de una relación afectiva, este fenómeno suele manifestarse en comportamientos de maltrato verbal, aislamiento, control, intimidación, amenaza y abuso emocional. El objetivo de esta investigación ha sido desarrollar un instrumento válido y confiable para medir la violencia psicológica durante el noviazgo. El método empleado siguió las fases descritas a continuación: jueces para validez de contenido y análisis factorial exploratorio y confirmatorio para validez de constructo y validez de criterio con evidencias de concurrencia y divergencia. La investigación se desarrolló con una muestra de 382 mujeres (61%) y 244 hombres (39%), con una edad promedio de 17.85 (DE 2.48) pertenecientes a educación media superior y superior, que hubiesen tenido una pareja formal (noviazgo). Se obtuvo como resultado una validez de contenido con V de Aiken=.91, una confiabilidad compuesta >.80 en su AFC, así como GFI de .98 y un CFI de .99. Las anteriores evidencias de validez y confiabilidad permiten recomendar la utilización del instrumento en el abordaje de la violencia psicológica en parejas de jóvenes mexicanos

Psychological violence is defined as any intentional act that harms the psychological stability of a person. In the context of an affective relationship, this phenomenon usually manifests itself in behaviors of verbal abuse, isolation, control, intimidation, threat and emotional abuse. The objective of this research has been to develop a valid and reliable instrument to measure psychological violence during courtship. The method used followed the phases described below: judges for content validity and explorator y and confirmatory factor analysis for construct validity and criterion validity with evidence of concurrence and divergence. The research was developed with a sample of 382 women (61%) and 244 men (39%), with an average age of 17.85 (SD 2.48) belonging to upper and higher secondary education, who would have had a formal partner (courtship). A content validity was obtained with V of Aiken = .91, a composite reliability> .80 in its AFC, as well as GFI of .98 and a CFI of .99. The previous evidences of validity and reliability allow us to recommend the use of the instrument in the approach to psychological violence in couples of young Mexicans

A Malinchismo Scale for Use among Adolescents / Escala de Malinchismo para Adolescentes

Abstract Malinchismo is a recently documented concept referring to preferencing the culture, ideas, tastes and behaviors of another nation/culture over one's own. First, we introduce this new concept in relation to post-colonial theory, social identity theory, and remote acculturation theory, explaining its relevance to adolescent development. We then introduce and validate a new Malinchismo scale using a derivative sequential method among two samples of adolescents in Mexico (n = 560 total). Our Malinchismo Scale is more comprehensive than existing alternatives and is the first to be validated for use among adolescents. We assessed 1) content validity using the responses of content experts who served as judges, 2) construct validity using exploratory and confirmatory factor analyses (EFA and CFA, respectively), and 3) convergent and discriminant validity using participant responses to the Ingroup Interethnic Bias Test. In total, 366 adolescents were in the EFA sample (M=16.18 years, SD=0.74, 62% female) and 194 adolescents were in the CFA sample (M=16.17, SD=1.06, 57% female). Results revealed excellent psychometric properties on all indices, supporting the Malinchismo Scale as a valid and reliable measure for adolescents.

Resumen El malinchismo es un concepto que hace referencia a la actitud de privilegiar la cultura, ideas, gustos y comportamientos que provienen de países o culturas diferentes de la persona que les elige. Si bien, el concepto remite a la conquista española del continente americano, la literatura científica considera que es aplicable a otros países y culturas. Es debido a esto que el constructo se aborda desde la teoría poscolonial, la teoría de la identidad social y la concerniente a la aculturación remota, con base en ellas se explica la importancia del estudio en las nuevas juventudes mexicanas. El método empleado para la validación de la escala de Malinchismo es uno secuencial derivativo, inicialmente evaluando los ítems con jueces para la obtención de la validez de contenido, posteriormente con una muestra total de 560 participantes se buscó la validez de constructo mediante Análisis Factorial Exploratorio, seguido de un Análisis Factorial Confirmatorio. Una vez obtenido el modelo definitivo se procedió hacia la obtención de validez concurrente y divergente, empleando el cuestionario de sesgo intergrupal interétnico. La muestra para el Análisis Factorial Exploratorio fue de 336 participantes (M=16.18 años, DE=0.74, 62% mujeres 38% hombres) y para el Análisis Factorial Confirmatorio se trabajó con194 adolescentes (M=16.17, DE=1.06, 57% mujeres y 43% hombres). Los resultados muestran una escala con excelentes propiedades psicométricas en todos los elementos del modelo factorial confirmatorio, así como de validez y confiabilidad de cada una de las dimensiones que le componen, haciendo de la escala de malinchismo una ideal para la medición de dicho fenómeno en adolescentes. La escala de malinchismo puede abordar cuatro factores que consisten en el privilegiar o preferir: comida, productos, personas o entretenimiento proveniente de otros países. La escala permitirá reconocer fenómenos sociales migratorios, de consumo y transformación cultural en las nuevas juventudes mexicanas.

Exposición a la violencia en adolescentes: desensibilización, legitimación y naturalización / Exposure to violence in teenagers: Desensitization, legitimation and naturalization

Resumen El artículo realiza una aproximación a las creencias e ideas de jóvenes que han estado expuestos a violencia y sus posibles implicaciones como la desensibilización a la violencia. Se realizó el estudio mediante el análisis de contenido de siete entrevistas a profundidad con adolescentes que hubiesen vivido violencia o le ejercieran. Se realizó una codificación axial abierta. Se encontraron las siguientes categorías: violencia psicológica: vivida o ejercida; física: atestiguada, vivida y sexual. Normalización de la violencia, violencia como juego, gusto o agrado, justificación, como estatus o jerarquía y como adaptación o defensa. La desensibilización a la violencia no sólo en su manifestación de normalización y agrado, sino también en una diversión explícita implica la disminución de la prosocialidad.

Abstract The article shows an approach to the beliefs and ideas of young people who have been exposed to violence and the potential implications of this exposure, such as desensitization to violence. Method: content analysis of seven in-depth interviews with teenagers who had experienced violence. An axial open coding was performed. Results: we found categories of psychological, physical and sexual violence; normalization of violence, violence as a game, enjoying or liking violence, justification, status or hierarchy and as adaptation or defense. Discussion: desensitization to violence appears not only ass normalization and a source of pleasure, but also in explicit fun, which involves reduced prosociality.

Domestic carnivore interactions with wildlife in the Cape Horn Biosphere Reserve, Chile: husbandry and perceptions of impact from a community perspective.

BACKGROUND: Hundreds of millions of domestic carnivores worldwide have diverse positive affiliations with humans, but can provoke serious socio-ecological impacts when free-roaming. Unconfined dogs (Canis familiaris) and cats (Felis catus) interact with wildlife as predators, competitors, and disease-transmitters; their access to wildlife depends on husbandry, perceptions, attitudes, and behaviors of pet owners and non-owners. METHODS: To better understand husbandry and perceptions of impacts by unconfined, domestic carnivores, we administered questionnaires (n = 244) to pet owners and non-owners living in one of the last wilderness areas of the world, the Cape Horn Biosphere Reserve, located in southern Chile. We used descriptive statistics to provide demographic pet and husbandry information, quantify free-roaming dogs and cats, map their sightings in nature, and report experiences and perceptions of the impact of free-roaming dogs and cats on wildlife. We corroborated our results with an analysis of prey remains in dog feces (n = 53). With generalized linear models, we examined which factors (i.e., food provisioning, reproductive state, rural/village households, sex, and size) predicted that owned dogs and cats bring wildlife prey home. RESULTS: Thirty-one percent of village dogs (n = 121) and 60% of dogs in rural areas (n = 47) roamed freely day and/or night. Free-roaming dog packs were frequently observed (64% of participants) in the wild, including a feral dog population on Navarino Island. Dogs (31 of 168) brought home invasive muskrats (Ondatra zibethicus) and avian prey, and over half of all cats (27 of 51) brought home mainly avian prey. Birds were also the most harassed wildlife category, affected by one third of all dogs and cats. Nevertheless, dog-wildlife conflicts were hardly recognized (<9% of observed conflicts and suspected problems), and only 34% of the participants thought that cats might impact birds. Diet analysis revealed that dogs consumed livestock (64% of 59 prey occurrences), beavers (Castor canadensis, 14%), and birds (10%). The probability that dogs brought prey to owners' homes was higher in rural locations and with larger dogs. There was also evidence that cats from rural households and with an inadequate food supply brought more prey home than village cats. DISCUSSION: Although muskrat, beavers, and birds were brought home, harassed, or found in dog feces, free-roaming dogs and, to a lesser extent, cats are perceived predominantly in an anthropogenic context (i.e., as pets) and not as carnivores interacting with wildlife. Therefore, technical and legal measures should be applied to encourage neutering, increase confinement, particularly in rural areas, and stimulate social change via environmental education that draws attention to the possibility and consequences of unconfined pet interaction with wildlife in the southernmost protected forest ecoregion of the globe.

Effect of calorie restriction on energy expenditure in overweight and obese adult women.

UNLABELLED: Energy expenditure (EE) may decrease in subjects on hypocaloric diets, in amounts that exceed body mass loss, favoring weight regain. OBJECTIVE: To verify if a short-term caloric restriction lowers Resting Energy Expenditure (REE) and Total Energy Expenditure (TEE) more than predicted by changes in body composition, and if this reduction of EE is related with compliance to the diet. METHODS: Twenty-two women aged 23-44 years with a body mass index (BMI) of 25-32 kg/m2, underwent a three-month calorie restriction treatment (20 kcal/kg initial weight) and were encouraged to increase their physical activity. At the beginning and end of the intervention, body composition (DEXA), REE, Physical Activity Energy Expenditure (PAEE) and TEE were assessed, through a combination of indirect calorimetry and actigraphy. Participants, who lost more or equal than 5% of their initial weight were considered compliant with the diet. RESULTS: In the compliant group, REE decreased, when expressed in absolute numbers or when adjusted by fat free mass (FFM) [-164 ± 168 kcal/day (10,6%) and -4,3 ± 4,6 kcal/kg FFM (10,5%)]. This decline was significantly greater than that observed in the non-compliant group [-6,2 ± 1.42 Kcal/day (0.16%) and -0,5 ± 3,4/Kg FFM (0.96%)]. FFM did not change in any of the two groups. At baseline, there was a significant correlation between FFM and REE (r = 0, 56 p < 0,05), which was lost at the end of the intervention. CONCLUSIONS: Compliant women showed a significant reduction in both absolute and adjusted REE, which together with the loss of correlation between REE and FFM at the end of the intervention suggests a metabolic adaptation.

El gasto energetico (GE) puede disminuir en sujetos sometidos a dietas hipocaloricas, en una magnitud que excede la reduccion explicada por los cambios en la composicion corporal; dificultando la mantencion del peso perdido. Objetivo: verificar si el Gasto Energetico en Reposo (GER) y Total (GET) experimentan una disminucion mayor a lo atribuible a cambios en la composicion corporal y dependen de la adherencia al tratamiento dietario. Metodología: veintidos mujeres (23-44 anos) con Indice de Masa Corporal (IMC) entre 25 y 32 kg/m2 fueron sometidas a tres meses de restriccion calorica (20 kcal/kg de peso inicial) y motivadas a aumentar su actividad fisica. Al inicio y al final se evaluo: peso, masa grasa (MG) y masa libre de grasa (MLG) con DEXA, GER (calorimetria indirecta), Gasto Energetico por Actividad Fisica (GEAF) y GET (actigrafia). Las participantes que perdieron ≥ 5% del peso inicial fueron consideradas como adherentes a la dieta. Resultados: el grupo adherente tuvo una disminucion significativa del GER absoluto [-164 } 168 kcal/dia (10,6%) y -4,3 } 4,6 kcal/kg MLG (10,5%)]. Esta disminucion fue significativamente mayor que la observada en el grupo no adherente [-6,2 } 1.42 kcal/dia (0.16%) y -0,5 } 3,4/kg FFM (0.96%)]. La MLG no cambio en ninguno de los dos grupos. Existio asociacion significativa entre MLG y GER (r = 0,56; p < 0,05) solo al inicio en el grupo total. Conclusiones: las mujeres adherentes a la restriccion calorica mostraron una reduccion en el GER tanto absoluto como ajustado por la MLG, lo cual, junto con la perdida de correlacion entre el GER y la MLG al final de la intervencion, sugieren adaptacion metabolica.

Does bird species diversity vary among forest types? A local-scale test in southern Chile.

Birds are the most diverse vertebrate group in Chile, characterized by low species turnover at the country-size scale (high alpha but low beta diversities), resembling an island biota. We tested whether this low differentiation is valid at a local scale, among six forest habitat types. We detected 25 bird species; avifauna composition was significantly different among habitat types, with five species accounting for 60% of the dissimilarity. We found a higher level of bird assemblage differentiation across habitats at the local scale than has been found at the country-size scale. Such differentiation might be attributed to structural differences among habitats.

Effects of exotic fish farms on bird communities in lake and marine ecosystems.

Salmon farming is a widespread activity around the world, also known to promote diverse environmental effects on aquatic ecosystems. However, information regarding the impact of salmon farming on bird assemblages is notably scarce. We hypothesize that salmon farming, by providing food subsidies and physical structures to birds, will change their local community structure. To test this hypothesis, we conducted a seasonal monitoring of bird richness, abundance, and composition at paired salmon pen and control plots in two marine and two lake sites in southern Chile, from fall 2002 to summer 2004. Overall, salmon farming had no significant effects on species richness, but bird abundance was significantly and noticeably higher in salmon pens than in controls. Such aggregation was mainly accounted for by the trophic guilds of omnivores, diving piscivores, carrion eaters, and perching piscivores, but not by invertebrate feeders, herbivores, and surface feeders. Species composition was also significantly and persistently different between salmon pens and controls within each lake or marine locality. The patterns described above remained consistent across environment types and seasons indicating that salmon farming is changing the community structure of birds in both lake and marine habitats by promoting functional and aggregation responses, particularly by favoring species with broader niches. Such local patterns may thus anticipate potential threats from the ongoing expansion of the salmon industry to neighboring areas in Chile, resulting in regional changes of bird communities, toward a less diverse one and dominated by opportunistic, common, and generalist species such as gulls, vultures, and cormorants.

Vestigios de la transgresión en las celebraciones mexicanas / Vestígios da transgressão nas celebrações mexicanas / Vestiges of transgression at Mexican celebrations

Adscrito en la tradición de los llamados textos sociológicos el presente artículo constituye una reflexión en torno de trazos melancólicos mascarados en cada una de las celebraciones mexicanas. Con el objetivo de dar marco a las conjeturas aquí desarrolladas se revisaron fuentes psicoanalíticas y literarias para sustentar que además de unir pasado y memoria, cada celebración mexicana es atravesada por la herencia arcaica de un elemento transhistórico de alternancia maniaco-melancólica: vestigio de la transgresión. El análisis muestra que en las celebraciones mexicanas prevalecen intermitencias entre dos formas de repetición, por un lado júbilo de triunfo y por otro deshonra por violación. Se concluye que disfrazados de fiesta y júbilo se ocultan trazos melancólicos que enmascaran los vestigios de una transgresión.(AU)

Seguindo a tradição dos chamados textos sociológicos, o presente artigo constitui uma reflexão acerca dos traços melancólicos mascarados em cada uma das celebrações mexicanas. Com o objetivo de dar marco às conjecturas aqui desenvolvidas, revisaram-se fontes psicanalíticas e literárias para sustentar que além de unir passado e memória, cada celebração mexicana é atravessada pela herança arcaica de um elemento transhistórico de alternância maníacomelancólica: vestígio da transgressão. A análise mostra que nas celebrações mexicanas prevalecem intermitências entre duas formas de repetição, de um lado júbilo de triunfo e, de outro, desonra por violação. Conclui-se que disfarçados de festa e júbilo ocultam-se traços melancólicos que mascaram os vestígios de uma transgressão.(AU)

Following the tradition of sociological texts this article is a reflection on melancholy traces masked in each of the Mexican celebrations. In order to give context to the conjectures developed here, psychoanalytic and literary sources were revised, bringing theoretical support that they are commemorations in which past and memory have a fundamental role, and they are also crossed by the archaic heritage of one transhistorical element of maniacmelancholic alternance: vestige of the transgression. The analysis illustrates that in Mexican celebrations there are obvious intermittences between two forms of repetition, on the one hand joyous triumph and on the other dishonor from violation. It can be concluded that in disguise of party and joy there are melancholy traces that masks the vestiges of the transgression.(AU)