Seasonal distribution and migrations of Agrotis ipsilon (Hufnagel) (Lepidoptera, Noctuidae)

The larva of the near-cosmopolitan noctuid moth Agrotis ipsi/on (Hufnagel) (-A. ypsilon, Rhyacia ypsi/on (Rott.), R. ypsilon (Warren), Scotia ipsilon (Rott.)) is popularly known as the greasy cutworm in Asia and North America, the dark sword grass in Britain, and the black cutworm in Europe. The name 'cutworm' reflects. its feeding habit of cutting off plant seedlings at the base of the stem, and the adjectives 'greasy' or 'black' describe its greasy, earthy-brown, blackish or grey-green appearance which is due to its black head, numerous dark tubercles, and dorsal longitudinal dark stripes and lateral pale ones. The greasy cutworm can be of very considerable economic importance, not only because of its prolific and often localized breeding but also because its nocturnal feeding habits often cause outbreaks to escape notice until a late stage. The sudden appearances of A. ipsilon, often in large numbers, and its seasonal disappearances, especially in India, the Celebes, Egypt and the Middle East, caused this pest to be recognized as a migrant about half a century ago. The present author has attempted to obtain additional circumstantial biogeographical evidence of major seasonal redistributions of populations on a world-wide basis, particularly over continental land masses and remote islands. This has been done by plotting historical records, obtained from museum specimens, light-traps and the scientific literature, on monthly distribution maps. This type of analysis has previously been undertaken for the armyworm moth, Spodoptera exempta (Walk.), in Africa (Betts, Haggis & Odiyo 1968), and for the Desert Locust, Schistocerca gregaria (Forsk.), throughout its vast distribution area in Africa, the Middle East and south-west Asia (Waloff 1946; Donnelly 1947; Davies 1952; Fortescue-Foulkes 1953). A further aim is to attempt an interpretation of the role of seasonal changes in the distribution of A. ipsilon as a natural means of adaptation

Digestibility and metabolizable energy of selected tropical feedstuffs estimated by in vitro and prediction equations

In vivo determination of digestible organic matter (dOM) and metabolisable energy (ME) concentrations of feeds is laborious and expensive, whereas analysis of their nutrient contents is routinely performed. Prediction equations based on the chemical composition of feeds can be a compromise. This study compared dOM and ME estimates of tropical feeds derived from selected equations (Yan and Agnew, 2004; Stergiadis et al., 2015a; Stergiadis et al., 2015b; AFRC, 1993) with those determined by the in vitro gas production method (Menke and Steingass, 1988). Samples of supplement feedstuffs (n = 12) and the herbaceous and ligneous vegetation on native pastures (n = 12) were collected in Lower Nyando, Kenya, over two seasons of one year. Samples were analysed for dry matter (DM; in % of fresh matter), crude ash, crude protein, ether extract, neutral and acid detergent fiber (NDF, ADF) (all in % of DM). Gross energy was determined by calorimetry. Nutrient concentrations varied across all samples with 8.5 – 87.9% DM, 5.2 – 16.8% crude ash, 36.7 – 74.1% NDF, 25.5 – 39.4% ADF, 3.2 – 14.2% crude protein, and 0.6 – 4.5% ether extract. The gross energy, in vitro dOM, and ME concentrations were 14.5 – 18.8 MJ/kg DM, 26.3 – 54.5%, and 3.8 – 8.4 MJ/kg DM, respectively. Compared with the in vitro method, all nutrient-based equations overestimated dOM (P 0.5). Nutrient-based equations do not sufficiently account for differences in nutrient availability, an aspect better simulated in vitro. Further development and/or validation of nutrient-based equations might be needed to more accurately predict dOM and ME of tropical feeds. AFRC. 1993. Wallingford: CAB International. Stergiadis et al. 2015a. J Dairy Sci, 98(5), 3257–3273 Stergiadis et al 2015b. Brit J Nutr, 113(10), 1571–1584. Yan and Agnew. 2004. J Anim Sci., 82, 1367–1379

Village Baseline Study: Site Analysis Report for Albertine Rift – Hoima, Uganda

The village baseline study of Kibaire village in the CCAFS benchmark site Hoima in Uganda took place from 13 to 16 July 2011. Forests are exploited at unsustainable levels in Kibaire but deforestation does not appear to be a serious threat because the tree population is still relatively high. Most of the forests have been leased to private individuals as part of the privatisation policy being implemented in Uganda. Wetlands are also increasingly subjected to overexploitation and pollution from brewing and other activities. Farming at both subsistence and commercial level is increasing at the expense of forests. Community access to forest resources is restricted. Participants identified 29 organisations working in the community, two-third of them operating from outside the locality. Participants said that they did have plenty of food in the village, and women expressed that they had never had a food crisis. Nonetheless, half of the organisations men and women identified were involved in some form of food security related activity, and notably food availability. Less than one-third of the organisations addressed natural resources management, and most of them were from outside the community. Organisations are the most significant source of information on agriculture. Farmers also get information through the many radio stations in the area that air many programs in local languages

An intensive, active surveillance reveals continuous invasion and high diversity of rhinovirus in households

We report on infection patterns in 5 households (78 participants) delineating the natural history of human rhinovirus (HRV). Nasopharyngeal collections were obtained every 3–4 days irrespective of symptoms, over a 6-month period, with molecular screening for HRV and typing by sequencing VP4/VP2 junction. Overall, 311/3468 (8.9%) collections were HRV positive: 256 were classified into 3 species: 104 (40.6%) HRV-A; 14 (5.5%) HRV-B, and 138 (53.9%) HRV-C. Twenty-six known HRV types (13 HRV-A, 3 HRV-B, and 10 HRV-C) were identified (A75, C1, and C35 being most frequent). We observed continuous invasion and temporal clustering of HRV types in households (range 5–13 over 6 months). Intrahousehold transmission was independent of clinical status but influenced by age. Most (89.0%) of HRV infection episodes were limited to <14 days. Individual repeat infections were frequent (range 1–7 over 6 months), decreasing with age, and almost invariably heterotypic, indicative of lasting type-specific immunity and low cross-type protection

Detection of infectious disease outbreaks in twenty-two fragile states, 2000-2010: a systematic review.

Fragile states are home to a sixth of the world's population, and their populations are particularly vulnerable to infectious disease outbreaks. Timely surveillance and control are essential to minimise the impact of these outbreaks, but little evidence is published about the effectiveness of existing surveillance systems. We did a systematic review of the circumstances (mode) of detection of outbreaks occurring in 22 fragile states in the decade 2000-2010 (i.e. all states consistently meeting fragility criteria during the timeframe of the review), as well as time lags from onset to detection of these outbreaks, and from detection to further events in their timeline. The aim of this review was to enhance the evidence base for implementing infectious disease surveillance in these complex, resource-constrained settings, and to assess the relative importance of different routes whereby outbreak detection occurs.We identified 61 reports concerning 38 outbreaks. Twenty of these were detected by existing surveillance systems, but 10 detections occurred following formal notifications by participating health facilities rather than data analysis. A further 15 outbreaks were detected by informal notifications, including rumours.There were long delays from onset to detection (median 29 days) and from detection to further events (investigation, confirmation, declaration, control). Existing surveillance systems yielded the shortest detection delays when linked to reduced barriers to health care and frequent analysis and reporting of incidence data.Epidemic surveillance and control appear to be insufficiently timely in fragile states, and need to be strengthened. Greater reliance on formal and informal notifications is warranted. Outbreak reports should be more standardised and enable monitoring of surveillance systems' effectiveness

The evolution of environmental assessment through storytelling – Stories from five decades of experience

This paper aims to explore the evolution of EA as a concept and as a tool through the thoughts, perspectives and reflections of those who have lived-through 50 years of EA practice. It presents findings from research informed by interviews through storytelling with 12 longstanding practitioners and scholars who have engaged with EA over five decades. The narratives collected and the emerging discourses provide useful insight into the “story” of the evolution of EA thus far, reflecting on the internal and external motivations driving EA’s evolution, and looking to where EA might go next, and how it might continue to evolve. The findings call for a return to more holistic conversations about the environment, and for greater advocacy at the heart of decision-making and institutional structures to enhance the influence of EA