Host Specificity of Amblyomma cajennense (Fabricius, 1787) (Acari: Ixodidae) with Comments on the Drop-off Rhythm

The parasitic specificity of larval, nymph and adult Amblyomma cajennense on six different host species: Oryctolagus cuniculus, Rattus norvegicus, Gallus gallus domesticus, Anas platyrhynchus, Coturnix coturnix and Streptopelia decorata is described. In terms of the numbers of larvae and nymphs recovered, O. cuniculus was the best host species. The modal day for drop-off of larvae and nymphs was day three for the mammal hosts, but variable in the birds. We conclude that adult A. cajennense have a strong degree of specificity due to the fact that the tick failed to complete its life cycle on any of the evaluated hosts. The immature stages, on the other hand, showed a low level of specificity, most especially in the larval stage, indicating the existence of secondary hosts which probably serve as dispersers in the wild. The results also indicated a variable drop-off rhythm for larvae and nymphs in two periods, diurnal (6-18 hr) and nocturnal (18-6 hr), which differed depending upon the host.

Evolutionary ecology of learning: insights from fruit flies

Ecologically and evolutionarily oriented research on learning has traditionally been carried out on vertebrates and bees. While less sophisticated than those animals, fruit flies (Drosophila) are capable of several forms of learning, and have an advantage of a short generation time, which makes them an ideal system for experimental evolution studies. This review summarizes the insights into evolutionary questions about learning gained in the last decade from evolutionary experiments on Drosophila. These experiments demonstrate that Drosophila have the genetic potential to evolve substantially improved learning performance in ecologically relevant learning tasks. In at least one set of selected populations the improved learning generalized to another task than that used to impose selection, involving a different behavior, different stimuli, and a different sensory channel for the aversive reinforcement. This improvement in learning ability was associated with reduction in other fitness-related traits, such as larval competitive ability and lifespan, pointing out to evolutionary trade-offs of improved learning. These trade-offs were confirmed by other evolutionary experiments where reduction in learning performance was observed as a correlated response to selection for tolerance to larval nutritional stress or for delayed aging. Such trade-offs could be one reason why fruit flies have not fully used up their evolutionary potential for learning ability. Finally, another evolutionary experiment with Drosophila provided the first direct evidence for the long-standing ideas that learning can under some circumstances accelerate and in other slow down genetically-based evolutionary change. These results demonstrate the usefulness of fruit flies as a model system to address evolutionary questions about learning.

Multilocus sequence analysis reveals the genetic diversity of European fruit tree phytoplasmas and supports the existence of inter-species recombination

The genetic diversity of three temperate fruit tree phytoplasmas ‘Candidatus Phytoplasma prunorum’, ‘Ca. P. mali’ and ‘Ca. P. pyri’ has been established by multilocus sequence analysis. Among the four genetic loci used, the genes imp and aceF distinguished 30 and 24 genotypes, respectively, and showed the highest variability. Percentage of substitution for imp ranged from 50 to 68% according to species. Percentage of substitution varied between 9 and 12% for aceF, whereas it was between 5 and 6% for pnp and secY. In the case of ‘Ca P. prunorum’ the three most prevalent aceF genotypes were detected in both plants and insect vectors, confirming that the prevalent isolates are propagated by insects. The four isolates known to be hypo-virulent had the same aceF sequence, indicating a possible monophyletic origin. Haplotype network reconstructed by eBURST revealed that among the 34 haplotypes of ‘Ca. P. prunorum’, the four hypo-virulent isolates also grouped together in the same clade. Genotyping of some Spanish and Azerbaijanese ‘Ca. P. pyri’ isolates showed that they shared some alleles with ‘Ca. P. prunorum’, supporting for the first time to our knowledge, the existence of inter-species recombination between these two species.

Fruit and Vegetables

This review showed that, based on the balance of current scientific evidence, organic fruit and vegetables are no safer or more nutritious than conventionally produced varieties.

Fruit and vegetables

You’ve probably noticed that people are getting more and more into their health these days: going to the gym, buying fancy ‘functional foods’ packed with extra vitamins, calcium, and so on. That’s all great, but what people may not realise is that some of the most ordinary foods are actually quite extraordinary. Genuine ‘superfoods’, in fact. Fruit and vegetables are superfoods. Why? Because they contain awhole lot of different vitamins and minerals, they’re low in fat and calories and also have some fibre. All that, and flavour and colour for your meals as well.

Consumer Focused Review of Fruit and Vegetables

This review provides an update on the fruit and vegetable review conducted in 2007. It collates and considers the information available – academic, regulatory, public health – on the health and food safety implications of fruit and vegetables. It focuses on ready-to-eat (RTE) fresh fruit and vegetables which are consumed raw, whether whole or prepared, and includes products packaged under vacuum or in a modified atmosphere that have not undergone any treatment (chemical, physical or biological) to ensure preservation, other than chilling. The key finding was that 75% of Irish consumers are now able to identify that they should eat five portions of fruit and vegetables a day, but only a third (36%) of consumers say they are doing so. The average intake of fruit and vegetables is currently less than half that recommended, at 2.4 portions per day. Issues to do with cost, shelf life, preparation time and habit were seen by consumers as barriers to buying and consuming more fruit and vegetables. his review provides an update on the fruit and vegetable review conducted in 2007. It collates and considers the information available – academic, regulatory, public health – on the health and food safety implications of fruit and vegetables. - See more at: http://www.safefood.eu/Publications/Research-reports/Consumer-Focused-Review-of-Fruit-and-Vegetables.aspx#sthash.T98zN2UU.dpuf This review provides an update on the fruit and vegetable review conducted in 2007. It collates and considers the information available – academic, regulatory, public health – on the health and food safety implications of fruit and vegetables. It focuses on ready-to-eat (RTE) fresh fruit and vegetables which are consumed raw, whether whole or prepared, and includes products packaged under vacuum or in a modified atmosphere that have not undergone any treatment (chemical, physical or biological) to ensure preservation, other than chilling. The key finding was that 75% of Irish consumers are now able to identify that they should eat five portions of fruit and vegetables a day, but only a third (36%) of consumers say they are doing so. The average intake of fruit and vegetables is currently less than half that recommended, at 2.4 portions per day. Issues to do with cost, shelf life, preparation time and habit were seen by consumers as barriers to buying and consuming more fruit and vegetables. This review provides an update on the fruit and vegetable review conducted in 2007. It collates and considers the information available – academic, regulatory, public health – on the health and food safety implications of fruit and vegetables. It focuses on ready-to-eat (RTE) fresh fruit and vegetables which are consumed raw, whether whole or prepared, and includes products packaged under vacuum or in a modified atmosphere that have not undergone any treatment (chemical, physical or biological) to ensure preservation, other than chilling. The key finding was that 75% of Irish consumers are now able to identify that they should eat five portions of fruit and vegetables a day, but only a third (36%) of consumers say they are doing so. The average intake of fruit and vegetables is currently less than half that recommended, at 2.4 portions per day. Issues to do with cost, shelf life, preparation time and habit were seen by consumers as barriers to buying and consuming more fruit and vegetables. - See more at: http://www.safefood.eu/Publications/Research-reports/Consumer-Focused-Review-of-Fruit-and-Vegetables.aspx#sthash.T98zN2UU.dpuf This review provides an update on the fruit and vegetable review conducted in 2007. It collates and considers the information available – academic, regulatory, public health – on the health and food safety implications of fruit and vegetables. It focuses on ready-to-eat (RTE) fresh fruit and vegetables which are consumed raw, whether whole or prepared, and includes products packaged under vacuum or in a modified atmosphere that have not undergone any treatment (chemical, physical or biological) to ensure preservation, other than chilling. The key finding was that 75% of Irish consumers are now able to identify that they should eat five portions of fruit and vegetables a day, but only a third (36%) of consumers say they are doing so. The average intake of fruit and vegetables is currently less than half that recommended, at 2.4 portions per day. Issues to do with cost, shelf life, preparation time and habit were seen by consumers as barriers to buying and consuming more fruit and vegetables. - See more at: http://www.safefood.eu/Publications/Research-reports/Consumer-Focused-Review-of-Fruit-and-Vegetables.aspx#sthash.T98zN2UU.dpuf This review provides an update on the fruit and vegetable review conducted in 2007. It collates and considers the information available – academic, regulatory, public health – on the health and food safety implications of fruit and vegetables. It focuses on ready-to-eat (RTE) fresh fruit and vegetables which are consumed raw, whether whole or prepared, and includes products packaged under vacuum or in a modified atmosphere that have not undergone any treatment (chemical, physical or biological) to ensure preservation, other than chilling. The key finding was that 75% of Irish consumers are now able to identify that they should eat five portions of fruit and vegetables a day, but only a third (36%) of consumers say they are doing so. The average intake of fruit and vegetables is currently less than half that recommended, at 2.4 portions per day. Issues to do with cost, shelf life, preparation time and habit were seen by consumers as barriers to buying and consuming more fruit and vegetables. - See more at: http://www.safefood.eu/Publications/Research-reports/Consumer-Focused-Review-of-Fruit-and-Vegetables.aspx#sthash.T98zN2UU.dpuf This review provides an update on the fruit and vegetable review conducted in 2007. It collates and considers the information available – academic, regulatory, public health – on the health and food safety implications of fruit and vegetables. - See more at: http://www.safefood.eu/Publications/Research-reports/Consumer-Focused-Review-of-Fruit-and-Vegetables.aspx#sthash.T98zN2UU.dpuf

Attrition in the Swiss Household Panel: Is change associated with later drop-out?

This study examines the importance of change in characteristics and circumstances of households and household members for contact and cooperation patterns. The literature suggests that there might be an underrepresentation of change in panel studies, because respondents facing more changes would be more likely to drop out. We approach this problem by analysing whether previous changes are predictive of later attrition or temporary drop-out, using eleven waves of the Swiss Household Panel (1999-2009). Our analyses support previous findings to some extent. Changes in household composition, employment status and social involvement as well as moving are associated mainly with attrition and less with temporary drop-out. These changes affect obtaining cooperation rather than obtaining contact, and tend to increase attrition.

Consumption of vegetables, fruit and other plant foods in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohorts from 10 European countries.

OBJECTIVE To describe and compare the consumption of the main groups and sub-groups of vegetables and fruits (V&F) in men and women from the centres participating in the European Prospective Investigation into Cancer and Nutrition (EPIC). DESIGN Cross-sectional analysis. Dietary intake was assessed by means of a 24-hour dietary recall using computerised interview software and standardised procedures. Crude and adjusted means were computed for the main groups and sub-groups of V&F by centre, separately for men and women. Adjusted means by season, day of the week and age were estimated using weights and covariance analysis. SETTING Twenty-seven centres in 10 European countries participating in the EPIC project. SUBJECTS In total, 35 955 subjects (13 031 men and 22 924 women), aged 35-74 years, randomly selected from each EPIC cohort. RESULTS The centres from southern countries had the highest consumption of V&F, while the lowest intake was seen in The Netherlands and Scandinavia for both genders. These differences were more evident for fruits, particularly citrus. However, slightly different patterns arose for some sub-groups of vegetables, such as root vegetables and cabbage. Adjustment for body mass index, physical activity, smoking habits and education did not substantially modify the mean intakes of vegetables and fruits. CONCLUSIONS Total vegetable and fruit intake follows a south-north gradient in both genders, whereas for several sub-groups of vegetables a different geographic distribution exists. Differences in mean intake of V&F by centre were not explained by lifestyle factors associated with V&F intake.

Projecte de reunificació de Sarrià de Ter a partir de la transformació urbana de l’espai lliure fruit de la desaparició de l’antic accés a l’Autopista AP-7

El projecte tracta de reunificar el poble de Sarrià de Ter (Gironès) a partir de l’espai lliure existent en el cor del poble, generat a partir de la desaparició de l’antic accés a l’autopista AP-7. Planteja la reunificació del poble a partir d’aquest espai lliure, entenent que és un espai potencialment desenvolupable amb la possibilitat d’unir les dues polaritats del poble que actualment formen part d’un tot, tenint serveis i activitat a banda i banda, que es complementen. No obstant, es vol desenvolupar aquest espai no com a espai construït sinó com un espai lliure del poble, donant resposta a la memòria històrica del mateix teixit urbà i entenent que amb l’actual situació econòmica i amb el nou POUM projectat en el nucli urbà, on es preveu la urbanització de dos nous sectors en ús de sòl residencial, no és necessari més espai construït destinat a aquesta qualificació. No obstant, per tal de generar una resposta urbana real en el territori i desenvolupable pels inversors privats, s’intentarà projectar una proposta viable econòmicament però atenent a les necessitats urbanes anteriorment esmentades

Attrition in the Swiss Household Panel: Is change associated with drop-out?

This study examines the importance of change in characteristics and circumstances ofhouseholds and household members for contact and cooperation patterns. The literaturesuggests that there might be an underrepresentation of change in panel studies, becauserespondents facing more changes would be more likely to drop out. We approach this problemby analysing whether previous changes are predictive of later attrition or temporary drop-out,using eleven waves of the Swiss Household Panel (1999-2009). Our analyses supportprevious findings to some extent. Changes in household composition, employment status andsocial involvement as well as moving are associated mainly with attrition and less withtemporary drop-out. These changes affect obtaining cooperation rather than obtaining contact,and tend to increase attrition.

Determinació de la data òptima de collita de la poma 'Granny Smith' en base a paràmetres de qualitat del fruit

La varietat de poma ‘Granny Smith’ es cull actualment atenent al temps transcorregut des de la floració de l’arbre, i no als paràmetres de qualitat del fruit. Els objectius d’aquest treball són determinar la data òptima de collita segons el grau de satisfacció dels consumidors (mitjançant la realització d’un tast de consumidors), relacionar la sensibilitat a l’escaldat superficial amb els paràmetres de maduresa a collita (valorant fruit a fruit després d’un període de conservació en cambra frigorífica de 5 mesos) i la posta a punt del DA-meter com a eina per a la gestió de la collita de la ‘Granny Smith’. Les conclusions del treball han estat: els consumidors han valorat més positivament la fruita collida més verda, però aquesta presenta l’inconvenient que té una afectació per escaldat superficial molt més elevada que la collida en un estat de maduresa més avançat. Pel que fa al DA-meter, encara no està preparat per ser utilitzat com a eina per a la gestió de la collita de la ‘Granny Smith’ tal com està concebut actualment

Lactic acid bacteria from fresh fruit and vegetables as biocontrol agents of phytopathogenic bacteria and fungi

This study evaluated the efficacy of lactic acid bacteria (LAB) isolated from fresh fruits and vegetables as biocontrol agents against the phytopathogenic and spoilage bacteria and fungi, Xanthomonas campestris, Erwinia carotovora, Penicillium expansum, Monilinia laxa, and Botrytis cinerea. The antagonistic activity of 496 LAB strains was tested in vitro and all tested microorganisms except P. expansum were inhibited by at least one isolate. The 496 isolates were also analyzed for the inhibition of P. expansum infection in wounds of Golden Delicious apples. Four strains (TC97, AC318, TM319, and FF441) reduced the fungal rot diameter of the apples by 20%; only Weissella cibaria strain TM128 decreased infection levels by 50%. Cell-free supernatants of selected antagonistic bacteria were studied to determine the nature of the antimicrobial compounds produced. Organic acids were the preferred mediators of inhibition but hydrogen peroxide was also detected when strains BC48, TM128, PM141 and FF441 were tested against E. carotovora. While previous reports of antifungal activity by LAB are scarce, our results support the potential of LAB as biocontrol agents against postharvest rot. [Int Microbiol 2008; 11(4):231-236]

Is There a Crime Drop in Western Europe?

Combining data from police statistics and crime victim surveys, this article analyses the evolution of crime in Western Europe from 1988 to 2007. The results show that there is no general drop in crime. Property offences and homicide have been decreasing since the mid 1990s, while violent and drug offences have increased during the period under study. These trends highlight the limits of the explanations to the crime drop in the United States, which are based on the premise of a correlation in the evolution of all offences. The drop in property offences seems related to changes in the socioeconomic situation in Europe as well as to increases in security measures in households, and the reinforcement of private security. The increase in violent offences can be explained by the combination of several factors, including changes in youth's free time provoked by the development of the Internet, changing demographics, and the rise of episodic heavy alcohol consumption and street gangs.