Two blacklight traps were operated in a non-agricultural setting in Cary, North Carolina, USA, from spring through fall in 2004 and 2005 and all Coccinellidae collected and identified. More than 1300 lady beetles were collected in each of the two years, with Harmonia axyridis dominant (> 98%) and collected consistently over the course of the trapping period. Although other coccinellid species were observed in the vicinity of the traps during photophase, their appearance in blacklight traps was negligible. Harmonia axyridis exhibited a distinct diel periodicity in appearance at the traps, beginning approximately an hour after sunset and ending about midnight. Sunrise and sunset collections from flight interference and sticky traps in a local alfalfa field suggest that H. axyridis may be more flight active during the scotophase than Coleomegilla maculata, Hippodamia convergens, and Coccinella septempunctata. This study supports the suggestion that blacklight traps give a biased depiction of coccinellid species composition in a given area, and indicates that seasonal and circadian thresholds for flight activity, phototaxis, or both in H. axyridis may diverge from those in most other Coccinellidae., Christine A. Nalepa., and Obsahuje seznam literatury
The article covers the topic of women's migration from poorer countries to the so called First World to provide domestic work and care giving. On the one hand, their movement is caused by the demand for domestic labour in rich countries where double career couples resolve the dilemma of reconciliation of public and private spheres by externalization of domestic work. On the other hand, the supply is significant. Migration and provision of domestic service is often the only survival strategy available to women from developing countries due to high unemployment and few working opportunities. The practice of hiring a migrant as domestic worker creates global care chains (Hochschild, 2001) that connect women engaged in care giving - those who are postponing it and those who are providing it. Migrant women hold an unequal position in these chains. They comprise a cheap labour in the informal private sector and so are vulnerable to abusive treatment. To tackle such discrimination, the patriarchal system stereotyping both women's and men's roles has to be challenged on the both sides of the care chain: in the developed as well developing countries.
In pondering how the existing evidence pertaining to the early Slavs in Bohemia and Moravia may be assessed, the paper rejects the arguments presented by Naďa Profantová, Felix Biermann, and Andrej Pleterski, in particular the idea of a migration of the early Slavs from western Ukraine and Bukovina into Bohemia and Moravia. The chronology of assemblages of the so-called “culture with Prague-type pottery” proposed by Profantová is demonstrably wrong, while Pleterski’s idea of a specifically Slavic “kitchen culture” rests on insufficient knowledge of the changes in eating practices accompanying economic transformations in the Mediterranean region during the sixth and seventh centuries. Against Biermann’s uncritical treatment of the written sources, particularly of Fredegar, the paper argues that the text of the Chronicle of Fredegar is not to be taken at face value, but understood as a means to please Fredegar’s Austrasian audience. and V úvaze o hodnocení stávajícího dokladového materiálu vztahujícího se k raným Slovanům v Čechách a na Moravě odmítá autor tohoto textu argumenty přednesené Naďou Profantovou, Felixem Biermannem a Andrejem Pleterskim, obzvláště myšlenku příchodu prvotních Slovanů do Čech a na Moravu ze západní Ukrajiny a Bukoviny. Chronologie souborů takzvané „kultury s keramikou pražského typu“, předložená Profantovou, je prokazatelně chybná, kdežto Pleterského myšlenka specificky slovanské „kuchyňské kultury“ spočívá na nedostatečné obeznámenosti se změnami v jídelních zvycích doprovázejících ekonomické změny ve Středomoří během 6. a 7. století. Proti Biermannovu nekritickému zacházení s písemnými prameny, zvláště s Fredegarem, namítá autor, že text Fredegarovy kroniky nelze brát doslovně, nýbrž je jej třeba chápat jako snahu vyhovět Fredegarovu autrasijskému čtenářstvu.
Daily emigrations of non-native age 0 and age 1 potamodromous (fluvial) rainbow trout Oncorhynchus mykiss and brown trout Salmo trutta
were investigated in two Missouri River tributaries, USA over the period 1998-2002. The patterns of emigration for both age 0 and age 1 fish of both species were highly variable, sometimes showing bimodal (spring and fall) emigrations and other times less well defined patterns. Peak timing of age 0 emigration was also highly variable among years (up to 5 months) and more
variable than the timing of age 1 emigrations (more than two months). Emigrations were preferentially associated with increasing photoperiod before June 22, with water temperatures from 7.5 to 12.5 °C, and often followed sudden increases in stream discharge. More emigrations were associated with the new moon phase as opposed to the full moon phase. In an analysis of models of emigration (2 rivers × 2 species × 2 ages/species
× 31 model combinations for five categorical variables – year, temperature, discharge, moon phase, and photoperiod) using the information-theoretic approach, none of the models were especially effective at explaining emigrations; for the 16 models (i.e. the two with the lowest AIC per river, species and age), no corresponding multiple linear regression model explained more than 41 % of the emigration, and most other models explained considerably less. Results of this study suggest that emigrations of both brown and rainbow trout as part of their fluvial life histories are potentially influenced by a variety of environmental factors, and can be expected to show considerable variation yearly based on the complex, poorly defined genetic origins of the fish and the highly variable climatic conditions associated with the Missouri River Basin.
The article describes the approach and method of Family Housing Pathways. This process of gathering and presenting data makes it possible to include the extended family’s housing resources, the management of these resources, and the transformations of households within a family. Twenty-eight Family Housing Pathways were gathered and collected as part of an assignment given to students as part of an undergraduate course on housing problems. The exercise shed light on recurring themes in the transformation of the housing system in Poland that influence individual and family management of housing resources. Even a sample of relatively privileged families demonstrates that housing is clearly a crucial dimension, especially in times of transition, e.g. in post-communist Poland after 1989. The Family Housing Pathways approach could be a promising tool as well as an approach that combines biographical and historical housing perspectives, without losing sight of concerns of a practical and ethical nature.
The effect of water temperature and flow on the migration of fish was observed using weekly inspections of a fishpass on the lowland section of the River Elbe (Střekov, Czech Republic) from spring to fall 2003 and 2004. The effect was examined separately for immature (up to 2 years old) and adult fish and also the most abundant species (roach Rutilus rutilus, bleak Alburnus alburnus, chub Squalius cephalus, gudgeon Gobio gobio). More than 13 thousand fish from 23 species were recorded in the fishpass during both years. The highest levels of fish occurrence in the fishpass were observed during the spring spawning migrations of adults (April-May) as well as during the late summer and fall migrations of adult and immature fish (September-November). While the total number of both fish age categories was significantly related to the interaction of water temperature and flow, however, responses of individual species and age categories differed from each other. The numbers of adult bleak, chub and gudgeon increased with higher temperature. The maximum numbers of adult bleak migrated at medium values of temperature (15-20 °C) and flow (140-270 m3 s–1). The abundances of adult chub and adult plus immature gudgeon were higher with higher flow. The numbers of immature bleak and chub decreased with increasing flow. The numbers of adult and immature roach were influenced only by water flow with maximal numbers migrating under medium values of flow. Generally, we observed that immature fish and small- and middle-sized species required lower values of water flow than adult fish or large species to facilitate their movement. The exception was gudgeon, which required higher values of flow for its migration, a feature that could be related to its bottom dwelling nature or rheophily.
The article focuses on gender aspects of globalisation and global restructuring and criticises the masculine bias of mainstream theories of globalisation. It is aimed at adding a global dimension to Czech gender studies. It looks at the way in which globalisation is gendered and based on gender ideologies, and how global restructuring affects and change gender systems. Primarily economic globalisation is addressed, and the changes in the organisation of labour globally are examined. Global production is dependent on cheap women's labour in the factories of multi-national corporations in the global south. The process of rendering labour more flexible and informal is associated with its féminisation. Care work and migration are also becoming feminised on a global scale. The article also analyses domestic work performed in the United States and Western Europe by women migrants from developing countries. All these processes are occurring within the context of neo-liberal policies and the changing role of states amidst a global restructuring, which needs to be examined from a gender perspective.
This text is focused on those Volhynian Czechs who did not return back. The Volhynian Czechs are the last members of huge Czech minority in Volhynia (territory of former Volhynia gubernia in the Russian Empire). Historical literature has so far focused mostly on the history of this minority since its arrival to Volhynia in 1868 to the return of most of its members and their settlement in Czechoslovakia around 1947.