scholarly journals Aedes species (Diptera: Culicidae) ecological and host feeding patterns in the north-eastern parts of South Africa, 2014–2018

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
M. M. Guarido ◽  
M. A. Riddin ◽  
T. Johnson ◽  
L. E. O. Braack ◽  
M. Schrama ◽  
...  

Abstract Background There is a paucity of recent data and knowledge on mosquito diversity and potential vectors of arboviruses in South Africa, with most of the available data dating back to the 1950s–1970s. Aedes and Culex species are the major vectors of some of the principal arboviruses which have emerged and re-emerged in the past few decades. Methods In this study we used entomological surveillance in selected areas in the north-eastern parts of South Africa from 2014 to 2018 to assess mosquito diversity, with special emphasis on the Aedes species. The impact of trap types and environmental conditions was also investigated. Identification of the blood meal sources of engorged females collected during the study period was carried out, and DNA barcodes were generated for selected species. Results Overall, 18.5% of the total Culicidae mosquitoes collected belonged to the genus Aedes, with 14 species recognised or suspected vectors of arboviruses. Species belonging to the Neomelaniconion subgenus were commonly collected in the Bushveld savanna at conservation areas, especially Aedes mcintoshi and Aedes circumluteolus. Aedes aegypti was present in all sites, albeit in low numbers. Temperature was a limiting factor for the Aedes population, and they were almost exclusively collected at temperatures between 18 °C and 27 °C. The cytochrome oxidase subunit I (COI) barcode fragment was amplified for 21 Aedes species, and for nine of these species it was the first sequence information uploaded on GenBank. Conclusion This study provides a better understanding of the diversity and relative abundance of Aedes species in the north-east of South Africa. The information provided here will contribute to future arboviral research and implementation of efficient vector control and prevention strategies. Graphical abstract

Author(s):  
Mohammad Hamed Aledamat

The study aimed to identify the extent to which educational supervisors in the North-Eastern Badia region have technical competencies in the light of quality standards from the point of view of school principals, and identify the impact of both sex, educational qualification and years of experience in this study. A questionnaire was distributed to all study population (154) principals and principals of the schools of the North-Eastern Badia Directorate. The results showed that the extent of the educational supervisors in the North-East Badia region of technical competencies in the light of quality standards School administrators rated the tool as a whole; got an average (3.57 out of 5) with a grade of (average), and at the pivot level; the focus on planning got the highest average (4.01), with a (high) grade followed by the teacher focus (3.72), The results showed that there are statistically significant differences attributed to the effect of sex in the field of the practice of electronic supervisory practice (3.52), (medium) and finally (3). In favor of males, there are no statistically significant differences attributable to other variables. In light of the results, the study recommended a set of recommendations, the most important of which are: Training workshops for educational supervisors on how to employ computer technologies in educational supervision and benefit from the services provided by the Internet and free sites such as Google Drive and others. In light of the results, a number of recommendations and suggestions were made to improve the quality of technical competencies of educational supervisors in the Eastern Badia and the whole of the Kingdom of Jordan. Including: Increasing training courses with the aim of developing educational supervisors professionally, especially in how to employ active work strategies (investigation, problem solving, critical thinking, and cooperative work), with the aim of increasing their skills in implementing cooperative and group work strategies, employing techniques and technical innovations, and working on the need to employ checks Social communication in order to activate the supervisory process


Author(s):  
Sergey B. Kuklev ◽  
Vladimir A. Silkin ◽  
Valeriy K. Chasovnikov ◽  
Andrey G. Zatsepin ◽  
Larisa A. Pautova ◽  
...  

On June 7, 2018, a sub-mesoscale anticyclonic eddy induced by the wind (north-east) was registered on the shelf in the area of the city of Gelendzhik. With the help of field multidisciplinary expedition ship surveys, it was shown that this eddy exists in the layer above the seasonal thermocline. At the periphery of the eddy weak variability of hydrochemical parameters and quantitative indicators of phytoplankton were recorded. The result of the formation of such eddy structure was a shift in the structure of phytoplankton – the annual observed coccolithophores bloom was not registered.


2017 ◽  
Vol 98 (7) ◽  
pp. 1619-1644 ◽  
Author(s):  
Alexandre Dias Pimenta ◽  
Bruno Garcia Andrade ◽  
Ricardo Silva Absalão

A taxonomic revision of the Nystiellidae from Brazil, including samples from the Rio Grande Rise, South Atlantic, was performed based on shell morphology. Five genera and 17 species were recognized. For the richest genus,Eccliseogyra, the three species previously recorded from Brazil were revised:E. brasiliensisandE. maracatu, previously known only from their respective type series, were re-examined. Newly available material ofE. maracatuexpanded the known geographic range of this species to off south-east Brazil.Eccliseogyra nitidais now recorded from north-eastern to south-eastern Brazil, as well as from the Rio Grande Rise. Three species ofEccliseogyraare newly recorded from the South Atlantic:E. monnioti, previously known from the north-eastern Atlantic, occurs off eastern Brazil and on the Rio Grande Rise; its protoconch is described for the first time, confirming its family allocation.Eccliseogyra pyrrhiasoccurs off eastern Brazil and on the Rio Grande Rise, andE. folinioff eastern Brazil. The genusIphitusis newly recorded from the South Atlantic.Iphitus robertsiwas found off northern Brazil, although the shells show some differences from the type material, with less-pronounced spiral keels. Additional new finds showed thatIphitus cancellatusranges from eastern Brazil to the Rio Grande Rise, and Iphitusnotiossp. nov. is restricted to the Rio Grande Rise.Narrimania, previously recorded from Brazil based on dubious records, is confirmed, including the only two living species described for the genus:N. azelotes, previously only known from the type locality in Florida, andN. concinna, previously known from the Mediterranean. A third species,Narrimania raquelaesp. nov. is described from eastern Brazil, diagnosed by its numerous and thinner cancellate sculpture. To the three species ofOpaliopsispreviously known from Brazil, a fourth species,O. arnaldoisp. nov., is added from eastern Brazil, and diagnosed by its very thin spiral sculpture, absence of a varix, and thinner microscopic parallel axial striae.Papuliscala nordestina, originally described from north-east Brazil, is recorded off eastern Brazil and synonymized withP. elongata, a species previously known only from the North Atlantic.


Author(s):  
H. Golezardy ◽  
I.G. Horak

During surveys on the tick burdens of various wildlife species in South Africa, nine small antelopes became available for study. Six of these were steenbok, Raphicerus campestris and three sunis, Neotragus moschatus, and their tick burdens are recorded here. The steenbok were examined in three nature reserves and harboured nine tick species. The sunis were examined in a fourth reserve and were infested with eight species. The steenbok and sunis were generally infested with the immature stages of the same tick species that infest larger animals in the same geographic regions. In addition the sunis harboured Haemaphysalis parmata, which in South Africa is present only in the eastern and north-eastern coastal and adjacent areas of KwaZulu-Natal Province. They were also infested with Rhipicephalus kochi, which in South Africa occurs only in the far north-east of the KwaZulu-Natal and Limpopo Provinces.


2019 ◽  
Vol 96 (8) ◽  
pp. 766-769 ◽  
Author(s):  
Inessa V. Averyanova ◽  
S. I. Vdovenko ◽  
A. L. Maksimov

Natural and climatic conditions of the environment of Northeast Russia and particularly Magadan region are the very factor mostly influencing adaptive responses by individuals inhabiting the region. Compensatory and adaptive responses in indigenes and newcomers of the region can be assumed to have their specific features. In 2009 there was executed the examination of the cardiovascular and respiratory systems and gas exchange in 392 cases aged of 17-19 years, including Europeans (Caucasians) born in the North in the 1st-2nd generation and indigenes. The methodologically similar study was carried out in 2014 in 265 persons, referred to the same cohorts of North-born Caucasians and Indigenes from the Magadan region. The results of the study executed in 2009 testified to a small number of physiological parameters that were reliably different in Caucasians vs. Indigene subjects. In 2014 no difference was found between the two examined cohorts throughout the observed parameters. The revealed changes in gas exchange, external respiration and cardiovascular systems demonstrated by modern young Indigenes of Northeast Russia testified to the fall in the effectiveness of their breathing. All that makes them farther from the classic “polar metabolic type” and their morphofunctional status becomes closer to European male subjects of Northeast Russia. Thus, we can observe a clear tendency towards “convergence in programs” of the adaptive changes between populations of the North residents undergoing similar natural, environmental and social factors.


Finisterra ◽  
2012 ◽  
Vol 31 (62) ◽  
Author(s):  
Andrew Pike ◽  
Mário Vale

The industrial policy in the UK and in Portugal, as in most EU countries, seeks to attract new investment capacity, to create jobs and to promote the impact of the so-called "demonstration efect" of "greenfield" development strategies pursued in the new plants of inward investors on existing or "brownfield" plants. This industrial policy focus is particularly evident in the automobile industry.This paper compares the industrial policy oriented towards the automobile industry in the UK and in Portugal. Two recent "greenfield" investments are analised: Nissan in the North-East region (UK) and Ford/VW in the Setúbal Peninsula (Portugal), as well as three "brownfield" plants: Ford Halewood and GM Vauxhall Ellesmere Port in the North-West region (UK) and Renault in Setúbal (Portugal). The first part starts with a discussion of industrial policy in the automobile sector, the role of "greenfield" development strategies and the "demonstration effect" on "brownfield" plants. Then, the limits of new inward investment are pointed out, basically their problems and restrictions. Afterwards, the structural barriers to the "demonstration effect" within "brownfield" plants are outlined and some possabilities for alternative "brownfield" development strategies are presented.


1994 ◽  
Vol 161 ◽  
pp. 21-33
Author(s):  
H.F Jepsen ◽  
J.C Escher ◽  
J.D Friderichsen ◽  
A.K Higgins

Late Archaean and Early Proterozoic crust-forming events in North-East and eastern North Greenland were succeeded by Middle Proterozoic sedimentation and volcanic activity; Late Proterozoic through Tertiary sedimentation was interrupted by several periods of tectonic activity, including the Caledonian orogeny in East Greenland and the Mesozoic deformation of the Wandel Hav mobile belt. Photogeological studies helped pinpoint areas of special interest which were investigated during the short 1993 field season. Insights gained during field work include: the nature of the crystalline basement terrain in the Caledonian fold belt, redefinition of the upper boundary of the Upper Proterozoic Rivieradal sandstones, revision of Caledonian nappe terminology, and the northern extension of the Caledonian Storstrømmen shear zone.


Author(s):  
J.R. Ellis ◽  
M.G. Pawson ◽  
S.E. Shackley

The stomach contents of ten species of elasmobranch from the north-eastern Atlantic indicate that most are generalist predators, eating a variety of polychaetes, molluscs, crustaceans and teleosts. Two species, Mustelus asterias and Squatina scjuatina were found to be specialist feeders, consuming portunid crabs and pleuronectids, respectively. Measures for both dietary breadth and dietary overlap are given and the implications of elasmobranch predation on the prey communities and on commercial species are discussed.


2020 ◽  
pp. bmjspcare-2020-002422
Author(s):  
Donna Wakefield ◽  
Elizabeth Fleming ◽  
Kate Howorth ◽  
Kerry Waterfield ◽  
Emily Kavanagh ◽  
...  

ObjectivesNational guidance recommends equality in access to bereavement services; despite this, awareness and availability appears inconsistent. The aim of this study was to explore availability and accessibility of bereavement services across the North-East of England and to highlight issues potentially applicable across the UK, at a time of unprecedented need due to the impact of COVID-19.MethodsPhase 1: an eight item, web-based survey was produced. A survey link was cascaded to all GP practices (General Practitioners) in the region. Phase 2: an email was sent to all services identified in phase 1, requesting details such as referral criteria and waiting times.ResultsAll 392 GP practices in the region were invited to participate. The response rate was 22% (85/392). Twenty-one per cent (18/85) of respondents reported that they do not refer patients, comments included ‘not aware of any services locally’. A total of 36 services were contacted with 72% responding with further information. Most bereavement specific support was reliant on charity-funded services including hospices, this sometimes required a pre-existing link with the hospice. Waiting times were up to 4 months.ConclusionsAlthough multiple different, usually charity-funded services were identified, awareness and accessibility were variable. This survey was conducted prior to the COVID-19 pandemic, where complex situations surrounding death is likely to impact on the usual grieving process and increase the need for bereavement support. Meanwhile, charities providing this support are under severe financial strain. There is an urgent need to bridge the gap between need and access to bereavement services.


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