Oviposition behavior of the mirid Macrolophus pygmaeus under risk of intraguild predation and cannibalism

Zoophytophagous mirid species, that feed and develop either on prey or plant resources, are often found simultaneously on the same host. Hence, these species can engage in both intraguild predation and cannibalism, which can pose a threat to mirid eggs. Ovipositing females may respond to such risks of predation on their eggs by reducing the number of eggs laid or selecting safer oviposition sites. We tested the oviposition behaviour of Macrolophus pygmaeus (Rambur) (Hemiptera: Miridae) females under the risk of cannibalism by M. pygmaeus males and intraguild predation by Nesidiocoris tenuis (Reuter) males (Hemiptera: Miridae) under laboratory conditions. Intraguild predators and cannibals were introduced during or after the oviposition period. The number of eggs laid (using counts of newly hatched nymphs) and their proportion on each part of a tomato plant were both measured. The results reveal that only cannibalism by M. pygmaeus males after the period of oviposition significantly decreased the number of hatched eggs. Cannibalism thus represents a greater risk to mirid eggs than intraguild predation. The M. pygmaeus female responded to the presence of potential intraguild predators (or competitors) by decreasing the number of eggs laid in the upper leaves. The results suggest that M. pygmaeus females avoid competition by N. tenuis, by laying fewer eggs on upper leaves. Cannibalism could regulate zoophytophagous predator populations under prey scarcity conditions and minimize the risk of crop damage associated with those biological control agents.info:eu-repo/semantics/acceptedVersio

Effets protecteurs du Celsior sur la fonction endothéliale d'artères coronaires porcines dans un modèle de préservation myocardique et de greffe cardiaque hétérotopique

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal

Étude pharmacologique de la réponse fonctionnelle vasculaire produite par des peptides vasoconstricteurs

Thèse numérisée par la Direction des bibliothèques de l'Université de Montréal

Une histoire du striptease japonais

La nudité est un phénomène culturel. S’il existait indiscutablement des corps nus au Japon avant la défaite, c’est pendant l’occupation américaine que virent le jour des spectacles exploitant la nudité féminine. L’analyse des formes concrètes de ces performances et de leurs évolutions permet de dégager trois périodes distinctes. L’après-guerre connaît une diffusion massive de représentations visant à érotiser le corps féminin. Dès 1947, l’insertion de « nus » sous forme de tableaux vivants dans les spectacles de revue se multiplie. C’est néanmoins à la charnière des années 1950 que la pratique se généralise avec l’apparition, à Asakusa notamment, de théâtres consacrés au striptease. Ces établissements conduisent à un « âge d’or » de l’effeuillage marqué par une inventivité, des innovations scéniques pétulantes et la consécration de vedettes. Amorcée dans les années 1960, la troisième période est quant à elle caractérisée par une intensification du contenu sexuel des performances.Nudity is a cultural phenomenon. If nude bodies were displayed before 1945, shows and entertainment exploiting female nudity as such only appeared under the American Occupation. The analysis of actual and concrete forms of such performances and their evolutions brings out three distinct periods. During the postwar period, representations eroticizing the female body spread widely. From 1947, the displaying of nudity, in the form of tableau vivant, increased in revue shows. It is around the turn of the 1950s that this kind of practice became widespread, with the appearance of theaters devoted to strip shows, especially in Asakusa. These institutions led to a “golden age” of striptease characterized byunbridled creativity, scenic innovations and the establishment of a star-system. Initiated in the 1960s, the third period is marked by an intensification of the sexual content and aspects of the performances

Le différend : la question des responsabilités de guerre et de la réorientation chez Yoshimoto Takaaki entre 1955 et 1958

La carrière de penseur critique du poète Yoshimoto Takaaki prend son essor au cours des années 1950, à travers notamment un texte remarqué sur la réorientation dans lequel il établit une équivalence entre réorientés et non-réorientés. Nous montrons que sa réflexion sur la réorientation s’inscrit dans le prolongement d’un travail polémique mené avec Takei Teruo sur la responsabilité de guerre des écrivains progressistes. En présentant le développement, le contexte intellectuel, certains protagonistes ainsi que les enjeux de cette polémique, nous tentons de cerner l’originalité de la démarche de Yoshimoto.詩人吉本隆明は1950年代半ば、とりわけ非転向者と転向者の類似性を主張し注目を浴びたエッセイ『転向論』により、思想家として頭角を現す。彼の転向論は、進歩的文学者の戦争責任についての武井昭夫との共同批評活動の延長として繰り広げられているだろう。この論争について、その展開や思想的文脈、関係する当事者たち、また問題点について論じつつ、吉本のアプローチの独自性を明らかにしたい。The poet Yoshimoto Takaaki’s career as a critical thinker took off in the 1950s, notably through a widely remarked essay on ideological conversion in which he established an equivalence between converts and non-converts. We argue that his thoughts on ideological conversion were rooted in the polemic work he engaged in – along with Takei Teruo – on the war responsibility of progressive writers. We seek to identify the originality of Yoshimoto’s approach by discussing and presenting the development of this controversy as well as its actors, implications and general intellectual context

Incidence, predictive factors and haemodynamic consequences of acute stent recoil following transcatheter aortic valve implantation with a balloon-expandable valve

Aims: The elastic behaviour (acute recoil) of a valve prosthesis stent following transcatheter aortic valve implantation (TAVI) is unknown. This study sought to determine the occurrence, severity, predictive factors and haemodynamic consequences of acute recoil following TAVI. Methods and results : A prospective angiographic analysis of the stent frame dimensions in 111 consecutive patients who underwent TAVI with a balloon-expandable valve (36 Edwards SAPIEN; 75 SAPIEN XT) was performed. Acute recoil was defined as the difference between minimal lumen diameter (MLD) at full balloon expansion and immediately after balloon deflation. MLD during balloon inflation was significantly larger than MLD after balloon deflation (23.40±2.31 mm vs. 22.29±2.21 mm, p<0.001), which represented an absolute and percent decrease in stent dimension of 1.10±0.40 mm and 4.70±1.76%, respectively. In the multivariate analysis, the predictors of larger recoil were a higher prosthesis/annulus ratio (r²=0.0624, p=0.015) and the SAPIEN XT prosthesis (r²=0.1276, p=0.001). No significant changes in haemodynamic performance were observed at discharge and follow-up in patients with larger recoil. Conclusions : TAVI with a balloon-expandable valve was systematically associated with a certain degree of valve stent recoil after balloon deflation. A higher degree of valve oversizing and the SAPIEN XT prosthesis predicted a larger degree of stent recoil

Sternal reentry in a patient with previous deep sternal wound infection managed with horizontal titanium plate fixation

Redo open-heart surgery and sternal reentry in patients with previous deep sternal wound infection (DSWI) and absence of sternal integrity can be a delicate and morbid task due the lack of a dissection plane between the heart and the surrounding soft tissues. Delayed sternal reconstruction and osteosynthesis with horizontal titanium plating fixation (Synthes) following vacuum assisted therapy (KCI) has recently been proposed and adopted for the treatment of DSWI. We present such a case of a patient who was successfully reoperated for valve replacement three years after coronary artery bypass grafting complicated by DSWI and initially treated with titanium plate fixation