Predación de coyote Canis latrans texensis en venado cola blanca Odocoileus virginianus texanus en Anáhuac, Nuevo León, México

Tesis (Maestría en Ciencias con Especialidad en Manejo de Vida Silvestre) UANL

Detección molecular y aislamiento de Brucella canis en perros del área metropolitana de Monterrey, N.L.

Tesis (Maestro en Ciencias Veterinarias) U.A.N.L., 2006

Lesiones en el parénquima pulmonar causadas por diferentes agentes etiológicos en coyotes (canis latrans) del norte de México.

Tesis (Maestría en Ciencia Animal) UANL, 2014.

Métodos de criopreservación de huevos embrionadod de toxocara canis.

Tesis (Maestría en Ciencia Animal) UANL, 2014.

Canis Volans

Creación de marca de accesorios de moda, arte y diseño.

Avaliação de Índices de Função Sistólica do Ventrículo Esquerdo em Canis lupus familiaris por Técnica de Ecocardiografia Doppler

A função cardíaca é fortemente condicionada pela mioarquitectura do coração, pelo que o estudo da relação morfologia-função ventricular nos mamíferos é de grande importância no diagnóstico e tratamento de patologias cardíacas. O cálculo dos volumes cardíacos durante todo o ciclo cardíaco tem uma importância fundamental para o estudo da função ventricular e para a definição dos padrões hemodinâmicos. Foi objectivo deste trabalho, o estudo de índices de função sistólica ventricular esquerda, em 25 cães (Cannis lupus familiaris), através da utilização de diferentes técnicas ecocardiográficas, como o Modo M, ecocardiografia bidimensional, Doppler tecidular e a ecocardiografia de contraste. Foi utilizado contraste ultrasonográfico, para melhorar a definição do endocárdio e possibilitar maior rigor no cálculo dos volumes ventriculares, e na avaliação da função ventricular sisto-diastólica global e regional. Os resultados apresentados foram sujeitos a tratamento estatístico com software Analyze-it. O Doppler tecidular mostrou ser um método robusto para avaliar a função sistólica. A ecocardiografia de contraste permitiu não só obter uma melhor definição endocárdica, como obter valores de fracção de ejecção com diferença estatisticamente significativa. Como os três métodos utilizados avaliam diferentes aspectos da função sistólica, função ventricular radial, circunferencial e longitudinal, não podem ser comparados directamente entre si.

Description of Enterococcus canis sp nov from dogs and reclassification of Enterococcus porcinus Teixeira et al. 2001 as a junior synonym of Enterococcus villorum Vancanneyt et al. 2001

Strains from anal swabs and chronic otitis externa in dogs were shown to be phylogenetically related to the Enterococcus faecium species group. They shared a number of phenotypic characteristics with these species, but they could be easily differentiated by biochemical reactions. In addition, the canine strains were unusual in their nearly complete failure to grow on sodium azide-containing enterococci-selective media and in their Voges-Proskauer reactions (usually negative). By using 16S rRNA sequencing and DNA-DNA hybridization of representative strains, as well as tDNA interspacer gene PCR and SDS-PAGE of whole-cell proteins, the group of canine strains was shown to constitute a novel enterococcal species. The name Enterococcus canis sp. nov. is proposed for this species, with LMG 12316(T) (= CCUG 46666(T)) as the type strain. Concurrently, the taxonomic situation and nomenclatural position of Enterococcus porcinus were investigated. As no phenotypic or genotypic differences were found between this species and Enterococcus villorum, the name E. porcinus is considered to be a junior synonym of E. villorum.

Actinomyces canis sp. nov., isolated from dogs

Three strains of a previously undescribed catalase-positive Actinomyces-like bacterium were isolated from dogs. Biochemical testing and PAGE analysis of whole-cell proteins indicated that the strains were phenotypically highly related to each other but different from previously described Actinomyces and Arcanobacterium species. Sequencing of 16S rRNA showed that the unknown bacterium represents a new subline within a cluster of species which includes Actinomyces hyovaginalis, Actinomyces georgiae, Actinomyces meyeri, Actinomyces odontolyticus, Actinomyces radingae and Actinomyces turicensis. On the basis of phenotypic evidence and 16S rRNA sequence divergence levels (greater than 5% with recognized Actinomyces species) it is proposed that the unknown strains from canine sources be classified as a new species with the name Actinomyces canis sp. nov. The type strain of Actinomyces canis is CCUG 41706T (= CIP 106351T).

Playing at bullying : the postmodern ethic of Bully (Canis Canem edit)

This essay discusses Bully (Canis Canem Edit), considering the game's antecedents (narratives involving young people in school settings) and the features which set it apart from other teen texts. It discusses the controversy surrounding the game and comes to the conclusion that the principal reason
for unease on the part of parents and educational authorities is that Bully's postmodernist ethic evades the binaries of liberal humanism and calls into question the foundations on which conventional ethical systems are based. Tbe paper considers several episodes from the game to flesh out its arguments about how the game manifests features of postmodernist textuality in its propensity for simultaneously deploying and interrogating references to historical and contemporary cultural practices.

Top predators as biodiversity regulators : the dingo Canis lupus dingo as a case study

Top-order predators often have positive effects on biological diversity owing to their key functional roles in regulating trophic cascades and other ecological processes. Their loss has been identified as a major factor contributing to the decline of biodiversity in both aquatic and terrestrial systems. Consequently, restoring and maintaining the ecological function of top predators is a critical global imperative. Here we review studies of the ecological effects of the dingo Canis lupus dingo, Australia's largest land predator, using this as a case study to explore the influence of a top predator on biodiversity at a continental scale. The dingo was introduced to Australia by people at least 3500 years ago and has an ambiguous status owing to its brief history on the continent, its adverse impacts on livestock production and its role as an ecosystem architect. A large body of research now indicates that dingoes regulate ecological cascades, particularly in arid Australia, and that the removal of dingoes results in an increase in the abundances and impacts of herbivores and invasive mesopredators, most notably the red fox Vulpes vulpes. The loss of dingoes has been linked to widespread losses of small and medium-sized native mammals, the depletion of plant biomass due to the effects of irrupting herbivore populations and increased predation rates by red foxes. We outline a suite of conceptual models to describe the effects of dingoes on vertebrate populations across different Australian environments. Finally, we discuss key issues that require consideration or warrant research before the ecological effects of dingoes can be incorporated formally into biodiversity conservation programs.

Oxytocin enhances the appropriate use of human social cues by the domestic dog (Canis familiaris) in an object choice task

It has been postulated that the neuropeptide, oxytocin, is involved in human-dog bonding. This may explain why dogs, compared to wolves, are such good performers on object choice tasks, which test their ability to attend to, and use, human social cues in order to find hidden food treats. The objective of this study was to investigate the effect of intranasal oxytocin administration, which is known to increase social cognition in humans, on domestic dogs' ability to perform such a task. We hypothesised that dogs would perform better on the task after an intranasal treatment of oxytocin. Sixty-two (31 males and 31 females) pet dogs completed the experiment over two different testing sessions, 5-15 days apart. Intranasal oxytocin or a saline control was administered 45 min before each session. All dogs received both treatments in a pseudo-randomised, counterbalanced order. Data were collected as scores out of ten for each of the four blocks of trials in each session. Two blocks of trials were conducted using a momentary distal pointing cue and two using a gazing cue, given by the experimenter. Oxytocin enhanced performance using momentary distal pointing cues, and this enhanced level of performance was maintained over 5-15 days time in the absence of oxytocin. Oxytocin also decreased aversion to gazing cues, in that performance was below chance levels after saline administration but at chance levels after oxytocin administration.

Infecção por Giardia lamblia (Kunstler, 1882) em cães (Canis familiaris) determinada através do método de Faust e Cols. (1939) e da técnica de coloração da auramina, no município de Canoas, RS, Brasil.

Giardia lamblia é um protozoário que acomete mais comumente animais jovens e que convivem em grupos. Apesar da alta prevalência, nem todos animais apresentam a doença clínica. Mesmo assim, a giardíase tem importância epidemiológica por possuir um elevado potencial zoonótico. O presente estudo teve como objetivo determinar a freqüência de Giardia lamblia em cães no município de Canoas, RS, Brasil, através do Método de Faust e cols. (1939) e da Técnica de Coloração da Auramina. Os grupos experimentais foram divididos de acordo com a procedência e o sexo. Das 332 amostras analisadas com o Método de Faust e cols, a estimativa em ponto da freqüência obtida foi de 34,04%, podendo variar de 28,95 a 39,13%, dentro de um intervalo de confiança de 95%. Destas amostras, 40,96% foram positivas em animais de canil e 27,11% de rua. O Teste Exato de Fisher aplicado a esses dados revelou existir uma diferença significativa (p = 0,0107) entre as variáveis resultado e procedência. A variável sexo, neste método não apresentou diferença significativa em relação ao resultado (p = 0,8162) totalizando 33,11% de machos positivos e 34,08% de fêmeas infectadas com o parasita. Das 147 amostras realizadas com a Técnica de Coloração da Auramina, 23 foram positivas, totalizando 15,65%. A análise estatística através do Teste McNemar revelou existir diferença significativa entre as duas técnicas (p = 0,0004). O valor Kappa foi igual a 0,07, considerado como um grau de concordância fraco. Os resultados encontrados neste estudo nos permitem afirmar que o Método de Faust e cols. foi o mais adequado para o diagnóstico na infecção por Giardia lamblia, entre os métodos analisados.