Spalangia cameroni Perkins (Hymenoptera: Pteromalidae) is sold commercially as a biocontrol agent of filth flies, including the house fly, Musca domestica L. (Diptera: Muscidae). For this reason, S. cameroni is mass-reared for inundative releases to control harmful flies. However, the mass-rearing protocols include very little information on the influence of natal host on subsequent host selection by parasitoids with more than one potential host as in the genus Spalangia. Here, we report on the use of S. cameroni against M. domestica. The S. cameroni were reared using Ceratitis capitata Wiedemann (Diptera: Tephritidae) (natal host) pupae for several generations. Freeze-killed fly pupae were used in assays to determine the fecundity, number of adult progeny and sex-ratio of this parasitoid. Realized fecundity and number of adult progeny were greater when provided with house fly pupae than Mediterranean fruit fly pupae. Thus S. cameroni parasitized more house fly pupae than C. capitata pupae, even though the parasitoid was reared on Mediterranean fruit fly for many generations. These results indicate that S. cameroni reared on C. capitata can be successfully used in inundative releases against both fruit flies (agriculture) and house flies (livestock farming)., Francisco Beitia, Erik Valencia, Bernat Peris, Luis De Pedro, Josep D. Asís, José Tormos., and Obsahuje bibliografii
In Lepidoptera, larval dietary experience of volatile cues can induce adult preference for these cues. However, such induction may require several generations, depending in part on the degree of specialization of the insects. In a previous study, using species of noctuid stem borers with different diet breadths, namely the polyphagous Sesamia nonagrioides, the oligophagous Busseola fusca and monophagous Busseola nairobica, it was shown that in S. nonagrioides, one generation was enough to induce a preference for vanillin in the resulting gravid females, whereas even two generations failed to induce a response in adults of Busseola spp. In this study, we checked whether a higher number of generations of exposure to a vanillin-enriched medium could induce a significant olfactory preference for this medium in the species B. fusca and B. nairobica, which have narrower host-plant utilization ranges than S. nonagrioides. Larvae were reared to the adult stage on an artificial diet enriched with vanillin for periods of from 2 to 7 or 8 generations, followed by two-choice tests on gravid females using a Y-tube olfactometer. The results showed different responses according to the species: for the oligophagous B. fusca, there was no significant effect of the conditioning, while a significant preference for the odours emitted by this new vanillin-enriched diet was recorded for the polyphagous S. nonagrioides and monophagous B. nairobica, but after different numbers of generations. In conclusion, different diet breadths seem to be associated with different levels of plasticity in the odour preference of adults. The implication of this result for insects' adaptability in a changing landscape is discussed., Christophe Petit, Peter Ahuya, Bruno Le Ru, Laure Kaiser-Arnauld, Myriam Harry, Paul-André Calatayud., and Obsahuje bibliografii
Urban gardens can harbour a high diversity of insects, which are critically important components of urban ecosystems. In this work, we investigate the richness and diversity of a major taxon of economic and ecological importance, the aphids (Hemiptera: Aphididae), and their main insect predators, the hoverflies (Diptera: Syrphidae) and ladybirds (Coleoptera: Coccinellidae), in urban gardens. We examined how variation in environmental factors associated with urbanisation (garden host plant abundance, garden plant richness, garden size, proportion of impervious surfaces in the surrounding area) directly and indirectly (via prey and predator abundance) influence the local diversity and abundance of aphids, ladybirds, and hoverflies. Sixty-seven domestic gardens located in southern England were surveyed during the peak period of aphid abundance, and the numbers and identity of aphids and their predators were recorded. We observed 45 aphid species (179917 individuals in total), 15 hoverfly species (494 individuals) and 8 ladybird species (173 individuals). We found that aphid species richness and abundance were positively associated with utilised host plant abundance and garden plant species richness. Hoverfly abundance was positively correlated with garden plant richness. The abundance of ladybirds was positively correlated with aphid abundance and garden plant species richness, and negatively associated to the proportion of impervious surfaces in the surrounding environment. The difference in responses between the two major taxa of aphid predators may reflect differences in their behaviour and natural history. Our results indicate that overall increases in urban land cover are not favourable for ladybirds as a group, and that fine scale habitat variables that are determined by garden owners have the potential to greatly affect the diversity of aphids and their primary predators., Elise A. Rocha, Estevão N.F. Souza, Lewis A.D. Bleakley, Christopher Burley, Jade L. Mott, Gloria Rue-Glutting, Mark D.E. Fellowes., and Obsahuje bibliografii
Although financialization of housing is well known global concept, in our paper we attempt to present how financialization produces new spaces and household practises in a Central Eastern European semipheripheral context. We approach this framework through an anthropological investigation, the transformation of allotment gardens what we consider as a combination of social and spatial transformations after the 1990s. In our case study we are curious how different waves of financialization influence the formation of the transformation of an informal housing space and how informal practices of the households could be an agency against financialization.
The changing world economy since the 1970s and the decrease in welfare and deregulation in the Global North have led to an inefficient and declining stock of affordable housing. In the Global South, the need to economically catch up with the Global North has led to a lack of sustainable affordable housing policies. Social and affordable housing policies in the Global South have been either non-existent or very inefficient. The aim of this short paper is to start a discussion (and contribute to the existing ones) on how the social dynamics of informal settlements may be a source of new approaches to the provision of affordable housing in the Global North and South. Despite their illegal status and characterisation as urban blight, informal settlements are frequently illustrative examples of collaborative processes in the areas of planning and development that depend on the social connections and relationships among squatter households.
This article deals with the issue of competence of so-called vulnerable persons and the possibility of making valid informed consent. The theory of competence is here perceived as a task oriented competence. Subsequently, the capacity of the patient to give informed consent is analyzed. Here, the difference between the so-called general competence and specific competence is analyzed, as well as the difference between degree conception of competence and threshold conception of competence. The relation between competence and consequences of performed medical procedure is also specified. Finally, the article describes how these theoretical approaches are reflected in medical as well as legal practice. and Tento článek se zabývá problematikou kompetence tzv. vulnerabilních osob a možnosti učinit validní informovaný souhlas. V článku je řešena nejprve teorie kompetence, která je vnímaná jako kompetence k plnění určitého úkolu (task oriented competence). Následně je rozebírána přímo kompetence pacienta k udělení informovanému souhlasu. Rozebrán je rozdíl mezi tzv. obecnou kompetencí a specifickou kompetencí, dále rozdíl mezi stupňovitou kompetencí a kompetencí hraniční. Specifikován je i poměr mezi kompetencí a následky provedeného zdravotního výkonu. Konečně je pak popsáno, jak se tyto teoretické přístupy odrážejí do medicínské, ale i právní praxe.
Tento článek se zabývá institutem informovaného souhlasu, zásadního právního i etického institutu v oblasti medicíny. Zkoumána je jeho etymologie, jeho ontologický status, jeho normativní síla a konečně i jeho charakteru jako komunikačního aktu. Text má prokázat tezi, že informovaný souhlas je komunikačním aktem - nikoliv pouhým mentálním stavem - který má za určitých podmínek normativní sílu. Tato normativní síla se plně projeví pouze v případě splnění základních podmínek: dostatečného poučení, dostatečného porozumění, svobodné a vážné vůle a kompetence pacienta., This article deals with the institute of informed consent, a fundamental legal and ethical institute in the field of medicine. Its etymology, ontological status, its normative power and, finally, its character as a communication act are studied. The text shows that informed consent is a communicative act - not just an inner mental state and that it has significant normative power. This normative power is manifesting itself only when certain conditions are met: sufficient disclosure, sufficient understanding, voluntariness and competence of the patient., and Adam Doležal.
Článek se zaměřuje na analýzu přístupu vybraných zahraničních právních řádů (Německo, Spojené státy americké), českého právního řádu a projektu DCFR k problematice rozsahu poučení pacienta o rizicích spojených s navrhovanou léčbou. Článek se rovněž snaží zodpovědět otázku, zda je vůbec možné a vhodné rozsah rizik, o nichž je třeba pacienta informovat, konkrétně vymezit, a pokud ano, jakým způsobem., The article is focused on the analysis of the approach of particular foreign legal orders (Germany, USA) as well as the Czech legal order and the DCFR project to the issue of the extent of disclosure of risk information. The article also seeks to answer the question whether or not it is possible and appropriate to define the extent of disclosure of risk information specifically and if so, how., and Ivo Smrž.
Cerebral ischemia-reperfusion injury (CIRI) is the predominant cause of neurological disability after cardiac arrest/cardiopulmonary resuscitation (CA/CPR). The endoplasmic reticulum stress (ERs)-induced apoptosis plays an important role in neuronal survival/death in CIRI. Our previous studies reported that the extracellular signal-regulated kinase (ERK) inhibitor, PD98059, alleviates CIRI after CA/CPR. Whether ERs-induced apoptosis is involved in the neuroprotection of PD98059 remains unknown. This study aims to investigate the effects of ERK inhibition by PD98059 on ERs-induced apoptosis after CIRI in the CA/CPR rat model. The baseline characteristics of male adult Sprague-Dawley (SD) rats in all groups were evaluated before CA/CPR. The SD rats that survived from CA/CPR were randomly divided into 3 groups (n=12/group): normal saline group (1 ml/kg), dimethylsulfoxide (DMSO, the solvent of PD98059, 1 ml/kg) group, PD98059 group (0.3 mg/kg). Another 12 SD rats were randomly selected as the Sham group. Twenty-four hours after resuscitation, neural injury was assessed by survival rate, neurological deficit scores (NDS) and Nissl staining; apoptosis of brain cells was detected using terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining; mRNA expression and protein levels of ERs-related protein BIP, PERK, ATF4 and CHOP were checked with RT-PCR and Western Blot. The results showed that there were no significant differences in baseline characteristics before CA/CPR among all groups. PD98059 significantly improved survival rate and NDS, increased the Nissl bodies in neurons, reduced apoptosis, downregulated the mRNA transcription and expression levels of BIP, PERK, ATF4 and CHOP at 24 h after CA/CPR. Our results demonstrate that inhibition of ERK by PD98059 alleviates ERs-induced apoptosis via BIP-PERK-ATF4-CHOP signaling pathway and mitigates CIRI in the CA/CPR rat model.