Resumen Un tecolote rítmico (Megascops trichopsis), la segunda especie más pequeña del género Mega-scops en México, fue admitido en el Centro de Atención de Fauna de la Reserva Ecológica del Pedregal de San Ángel. En el examen físico general no encontramos patologías aparentes, pero el tecolote no podía volar ni cazar. Con base en lo anterior, determinamos que el tecolote era candidato para ser rehabilitado con el propósito de reintroducirlo a la vida silvestre. Durante la rehabilitación implementamos vuelos cortos, vuelos largos al aire libre y vuelos verticales. Además, ofrecimos presas vivas para estimular el comportamiento de caza. Una vez rehabilitado tomamos muestras de sangre, heces y realizamos un examen oftalmológico. Previo a la liberación llevamos a cabo un examen físico general donde el tecolote presentó un peso adecuado (120 g). No encontramos endoparásitos, ni alteraciones en el examen oftalmológico. El tecolote se mostró alerta y elusivo, sin signos de habituación al contacto humano. Tuvo un comportamiento de vuelo y caza exitosos. Sus valores hematológicos se encontraron dentro de los rangos óptimos reportados para Megascops asio y Asio flammeus. Es el primer reporte de valores hematológicos y bioquímicos de esta especie.

Abstract A whiskered screech-owl (Megascops trichopsis), the second smallest owl of the genus Mega-scops in Mexico, was admitted at the Wildlife Care Center of El Pedregal de San Angel Ecological Reserve. After performing the physical examination we found no pathologies, but the owl was not able to fly or to hunt successfully. Based on these we determined that the owl was candidate for rehabilitation for the purpose of reintroducing it to the wild. During the rehabilitation, short indoor, long outdoor and vertical flights were carried out. In addition, we offered different live preys to simulate hunting behavior. After rehabilitation, we take blood and fecal samples. Also, a complete ophthalmological examination was carried out. Before the release, a general physical evaluation was carried out where the owl showed an adequate weight (120 g). We did not find endoparasites, or alterations in the ophthalmological exam. The owl was alert and elusive, with no signs of habituation to human contact. Also, a successful flight and hunting behavior was observed. Their hematological values were within the optimal ranges reported for Megascops asio and Asio flammeus. This is the first report of hematological and biochemical values of this species.

Resumo Cães errantes e selvagens representam um grupo de animais de companhia livres. Eles impactam as populações de animais selvagens pela predação de espécies nativas, deslocando predadores e introduzindo patógenos exóticos. O objetivo deste trabalho foi descrever a ocorrência molecular de Rickettsia, Ehrlichia, Anaplasma, Mycoplasma e Bartonella em cães selvagens. O estudo foi realizado no último ecossistema de uma área protegida na Cidade do México. Amostras de coágulos sanguíneos de 19 cães foram obtidas e analisadas para detecção de fragmentos específicos do gene 16S-rRNA para Anaplasma, Ehrlichia e Mycoplasma e citrato sintase (gltA) para Bartonella e Rickettsia. Nossos resultados mostraram que o DNA de três espécies de bactérias (Bartonella vinsonii subsp. berkhoffii, Ehrlichia canis e Mycoplasma haemocanis) estava presente com frequências variando de 5,3 a 15,8%. Este é o primeiro registro de B. vinsonii subsp. berkhoffii e M. haemocanis em cães do México, e também a primeira descrição de Ehrlichia canis na Cidade do México. É importante realizar a vigilância das populações de cães selvagens para identificar o impacto desses patógenos nas populações de animais silvestres e na Saúde Pública, a fim de estabelecer programas de prevenção e proteção.

Abstract Free-ranging and feral dogs represent a group of unattended companion animals. They impact wild animal populations by predating native species, displacing predators and introducing exotic pathogens. The aim of this work was to describe the molecular occurrence of Rickettsia, Ehrlichia, Anaplasma, Mycoplasma and Bartonella in feral dogs. The study was carried out in the last relict of a protected area in Mexico City. Blood clots samples from 19 dogs were obtained and analyzed for detection of specific fragments of the 16S-rRNA gene for Anaplasma, Ehrlichia and Mycoplasma and citrate synthase (gltA) for Bartonella and Rickettsia. Our results showed that DNA from three bacteria species (Bartonella vinsonii subsp. berkhoffii, Ehrlichia canis and Mycoplasma haemocanis) was present with frequencies ranging from 5.3 to 15.8%. This is the first record of B. vinsonii subsp. berkhoffii and M. haemocanis in dogs from México, and also the first finding of Ehrlichia canis in Mexico City. It is important to perform surveillance of feral dog populations in order to identify the impact of these pathogens on wild animal populations and Public Health in order to establish prevention and protection programs.

Bajo un diseño no experimental, analítico y transversal, el estudio describe la relación existente entre las estrategias de aculturación propuestas por Berry, de integración, asimilación, separación y marginalización, con la identidad étnica. Se recogieron datos de 431 inmigrantes peruanos y colombianos en la ciudad de Antofagasta, Chile, a través de la escala de aculturación desarrollada por Basabe, Zlobina, y Páez, (2004) y la Escala de Identidad Étnica Multigrupo (EIEM) en su versión en español. Los resultados arrojaron que la estrategia de aculturación mayormente utilizada por ambos grupos fue la biculturalidad aunque existen diferencias por sexo. En cuanto a la identidad étnica, las diferencias fueron estadísticamente significativas para ambos grupos solo entre nacionalidades. Al analizar la relación existente entre las variables, las pruebas lograron ser concluyentes apoyando los supuestos teóricos de que quienes optan por una estrategia de aculturación de "lealtad al endogrupo" (biculturales y separados) tienen una mayor orientación positiva hacia su grupo étnico, a diferencia de quienes utilizan una estrategia de corte "individualista" (asimilados y marginados).

Under a not experimental, analytical cross-sectional desing, this study describes the relation between the acculturation strategies introduced by Berry, integration, assimilation, separation and marginalization, with the ethnic identity. Data was collected from 431 peruvians and colombians immigrants in the city of Antofagasta, Chile, using the acculturation scale developed by Basabe, Zlobina and Páez, (2004) and the spanish version of the Multigroup Ethnic Identity Measure (MEIM). The results concludes that biculturality was the most used acculturation strategy for both groups although differences were found for sex. For ethnic identity, differences were statistically significant for both groups only between nationalities. Analysing the existent relation between the variables, the tests concludes in favor for theoretical assumptions that people who choose for a "loyalty to ingroup" acculturation strategy (biculturals and separated) has a higher positive orientation to his/her own ethnic group, instead people who use a "individualistic" strategy (assimilated and marginated)