共查询到20条相似文献,搜索用时 15 毫秒
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Nizar Jamal Haddad Adjlane Noureddine Banan Al‐Shagour Wahida Loucif‐Ayad Mogbel A. A. El‐Niweiri Eman Anaswah Wafaa Abu Hammour Dany El‐Obeid Albaba Imad Mohamed A. Shebl Abdulhusien Sehen Almaleky Abdullah Nasher Nagara Walid Mohamed Fouad Bergigui Orlando Yañez Joachim R. de Miranda 《Insect Science》2017,24(1):103-113
Three hundred and eleven honeybee samples from 12 countries in the Middle East and North Africa (MENA) (Jordan, Lebanon, Syria, Iraq, Egypt, Libya, Tunisia, Algeria, Morocco, Yemen, Palestine, and Sudan) were analyzed for the presence of deformed wing virus (DWV). The prevalence of DWV throughout the MENA region was pervasive, but variable. The highest prevalence was found in Lebanon and Syria, with prevalence dropping in Palestine, Jordan, and Egypt before increasing slightly moving westwards to Algeria and Morocco Phylogenetic analysis of a 194 nucleotide section of the DWV Lp gene did not identify any significant phylogenetic resolution among the samples, although the sequences did show consistent regional clustering, including an interesting geographic gradient from Morocco through North Africa to Jordan and Syria. The sequences revealed several clear variability hotspots in the deduced amino acid sequence, which furthermore showed some patterns of regional identity. Furthermore, the sequence variants from the Middle East and North Africa appear more numerous and diverse than those from Europe. 相似文献
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Three hominid molars were recovered from a depth of 7.0-7.1 meters in the Mumba Shelter at Lake Eyasi, northern Tanzania. Geological context of the finds and archaeological data indicate that people with a Middle Stone Age technology were using the Mumba locality intermittently whenever retreat of lake waters allowed access to the site. Uranium series dates suggest an age on the order of 130,000 years bp for the teeth and stone tools. Based on morphological analyses, the dental remains probably belonged to one individual and appear to be the crowns of two upper permanent M2s and one lower permanent M2. Crown areas are very small, even in comparison to the variation exhibited by recent African populations. Crown patterns have no archaic features. These teeth are smaller than any verifiable archaic Homo sapiens examples; thus, they may represent early anatomically modern Homo sapiens. 相似文献
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Hélène Valladas Norbert Mercier Israel Hershkovitz Yossi Zaidner Alexander Tsatskin Reuven Yeshurun Laurence Vialettes Jean-Louis Joron Jean-Louis Reyss Mina Weinstein-Evron 《Journal of human evolution》2013
The transition from the Lower to the Middle Paleolithic in the Levant is a crucial event in human evolution, since it may involve the arrival of a new human population. In the current study, we present thermoluminescence (TL) dates obtained from 32 burnt flints retrieved from the late Lower Paleolithic (Acheulo-Yabrudian) and Early Middle Paleolithic (Mousterian) layers of Misliya Cave, Mount Carmel, Israel. Early Middle Paleolithic industries rich in Levallois and laminar products were assigned mean ages ranging from ∼250 to ∼160 ka (thousands of years ago), suggesting a production of this industry during MIS 7 and the early part of MIS 6. The mean ages obtained for the samples associated with the Acheulo-Yabrudian (strengthened by an isochron analysis) indicate a production of this cultural complex ∼250 ka ago, at the end of MIS 8. According to the Misliya TL dates, the transition from the Lower to the Middle Paleolithic in the site took place at the limit MIS 8/7 or during the early part of MIS 7. The dates, together with the pronounced differences in lithic technology strongly suggest the arrival of a new population during this period. 相似文献
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Max Kasparek 《Zoology in the Middle East.》2013,59(1):25-32
Abstract The Whimbrel (Numenius phaeopus) is a scarce but regular passage visitor in Turkey. Spring migration has its peak in April, autumn migration in August/September (medians are April 23th and August 29th). Detailed information on flock size, wintering, main resting sites etc. is given and compared with other Middle East countries. 相似文献
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J. Constans Ph. Lefevre-Witier P. Richard G. Jaeger 《American journal of physical anthropology》1980,52(3):435-441
This article presents the results obtained by electrophoretic analysis of the group specific component polymorphism in more than 1,250 serum samples from populations living in the Sahara, the Middle East, and equatorial Africa. In addition to the alleles GcIF and GcIS, five variants, including one previously unknown, were found. The distribution of the alleles herein described permits speculation on exchanges and relation among the groups considered. The lowest frequencies of the gene Gc2 correspond to regions where sunlight is stronger. There is also a north-south gradient in the GcIF gene frequency. This seems to parallel the gradient seen in skin pigmentation. 相似文献
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The Red Sea has had a profound biogeographic effect on organisms with Afro-Asian distributions, resulting in complex patterns of admixture on the Arabian Peninsula. We investigate the phylogenetic affinities of a monitor lizard (Varanus yemenensis) restricted to the southwestern Arabian Peninsula by sequencing all African monitor species and several Asian monitor species for the mitochondrial gene ND2 and the nuclear marker RAG-1. We find evidence that V. yemenensis is of African origin, being most closely related to the white-throat monitor, V. albigularis, an African species complex distributed from the Horn of Africa to southern Africa. Using divergence-dating analyses, we investigate several biogeographic hypotheses to infer the likely mechanism of colonization of the Arabian Peninsula by this species. Our results reveal that both dispersal across a southern land bridge and overwater dispersal are potential explanations. The patterns observed in V. yemenensis are contrasted with other taxa having similar Afro-Arabian disjunct distributions to better understand the complex biogeographic history of this region. 相似文献
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Assefa Z 《Journal of human evolution》2006,51(1):50-75
The Middle Stone Age (MSA) sediments of Porc-Epic Cave near Dire Dawa, Ethiopia, have produced a large assemblage of archaeofaunal remains dating to the later periods of the Late Pleistocene. As one of the few MSA faunal assemblages from East Africa subject to detailed analysis, it provides rare insight into the foraging behavior of the early modern humans in this region. The MSA fauna include taxa that were not historically present in the area, with the occurrence of reduncines and alcelaphines indicating widespread grasslands and proximity to a perennial source of water. The faunal analysis examined several lines of evidence, including breakage patterns, surface modification, and skeletal-element representation. By incorporating comparisons with multiple actualistic data sets, the analysis of the assemblage demonstrates that, while the influence of carnivores and other biotic agents was evident, the faunal remains were accumulated primarily by hominid activity. The skeletal-element representation at Porc-Epic includes an abundance of high utility bones, in contrast to the predominance of "head-and-foot" elements documented at other MSA and Middle Paleolithic (MP) sites. The MSA occupants of Porc-Epic effectively exploited a wide range of prey with more emphasis on small- and medium-sized mammals. 相似文献
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BackgroundAvailability of stage information by population-based cancer registries (PBCR) remains scarce for diverse reasons. Nevertheless, stage is critical cancer control information particularly for cancers amenable to early detection. In the framework of the Global Initiative for Cancer Registry Development (GICR), we present the status of stage data collection and dissemination among registries in the Middle East and Northern Africa (MENA) region as well as the stage distribution of breast cancer patients.MethodsA web-based survey exploring staging practices and breast cancer stage was developed and sent to 30 PBCR in 18 countries of the MENA region.ResultsAmong 23 respondent PBCR, 21 collected stage data, the majority (80%) for all cancers. Fourteen registries used a single classification (9 TNM and 5 SEER), 7 used both staging systems in parallel. Out of 12,888 breast cancer patients (seven registries) 27.7% had unknown TNM stage (11.1% in Oman, 46% in Annaba). When considering only cases with known stage, 65.3% were early cancers (TNM I+II), ranging from 57.9% in Oman to 83.3% in Batna (Algeria), and 9.9% were stage IV cancers. Among the nine registries providing SEER Summary stage for breast cancer cases, stage was unknown in 19% of the cases, (0 in Bahrain, 39% in Kuwait). Stage data were largely absent from the published registry reports.ConclusionDespite wide stage data collection by cancer registries, missing information and low dissemination clearly limit informing efforts on early detection. The use of two classification systems in parallel implies additional workload and might undermine completeness. The favourable results of early cancer (TNM I+II) in two thirds of breast cancer patients needs to be interpreted with caution and followed up in time. Although efforts to improve quality of stage data are needed, our findings are particularly relevant to the WHO Global Breast Cancer Initiative. 相似文献
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《Saudi Journal of Biological Sciences》2020,27(9):2457-2478
Tuberculosis (TB) is a disease that affects one-third of the world’s population. Although currently available TB drugs have many side effects, such as nausea, headache and gastrointestinal discomfort, no new anti-TB drugs have been produced in the past 30 years. Therefore, the discovery of a new anti-TB agent with minimal or no side effects is urgently needed. Many previous works have reported the effects of medicinal plants against Mycobacterium tuberculosis (MTB). However, none have focused on medicinal plants from the Middle Eastern and North African (MENA) region. This review highlights the effects of medicinal plants from the MENA region on TB. Medicinal plants from the MENA region have been successfully used as traditional medicine and first aid against TB related problems. A total of 184 plants species representing 73 families were studied. Amongst these species, 93 species contained more active compounds with strong anti-MTB activity (crude extracts and/or bioactive compounds with activities of 0–100 µg/ml). The extract of Inula helenium, Khaya senegalensis, Premna odorata and Rosmarinus officinalis presented the strongest anti-MTB activity. In addition, Boswellia papyrifera (Del) Hochst olibanum, Eucalyptus camaldulensis Dehnh leaves (river red gum), Nigella sativa (black cumin) seeds and genus Cymbopogon exhibited anti-TB activity. The most potent bioactive compounds included alantolactone, octyl acetate, 1,8-cineole, thymoquinone, piperitone, α- verbenol, citral b and α-pinene. These compounds affect the permeability of microbial plasma membranes, thus kill the mycobacterium spp. As a conclusion, plant species collected from the MENA region are potential sources of novel drugs against TB. 相似文献
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Nicolas Brucato Veronica Fernandes Stéphane Mazières Pradiptajati Kusuma Murray P. Cox Joseph Wainaina Ng’ang’a Mohammed Omar Marie-Claude Simeone-Senelle Coralie Frassati Farida Alshamali Bertrand Fin Anne Boland Jean-Francois Deleuze Mark Stoneking Alexander Adelaar Alison Crowther Nicole Boivin Luisa Pereira François-Xavier Ricaut 《American journal of human genetics》2018,102(1):58-68
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Windborne moth migration over the Middle East 总被引:1,自引:0,他引:1
Abstract.
- 1 From 10 years' records of moths caught in a light trap at Eilat, Israel, eleven selected occasions with sudden increases in catch involving seventeen species were related to accompanying changes in wind.
- 2 At all times of the year examined, sudden increases in catch of all species were associated with winds changing direction to blow from the Nile Delta or from the Levant.
- 3 All seventeen species are inferred to be windborne over at least several hundred kilometres.
- 4 The results are consistent with huge plumes of moths streaming downwind each night from the Delta and the Levant, sometimes crossing Eilat, sometimes crossing the Mediterranean, but more often passing into the deserts.
- 5 Plumes are produced throughout the breeding season of each species.
- 6 The results are probably representative of migration elsewhere from the southern limits of breeding on rain-fed vegetation, with inferred widespread adult mortality and renewed breeding most likely after migration on brief spells of southerly winds.
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CONSTANTÍ STEFANESCU XAVIER PUIG‐MONTSERRAT BOUDJÉMA SAMRAOUI REBECA IZQUIERDO ANDREU UBACH ANTONI ARRIZABALAGA 《Ecological Entomology》2017,42(6):737-747
1. The painted lady Vanessa cardui is a long‐range migratory butterfly that performs an annual multi‐generational round‐trip between Europe and Africa. Each autumn it returns to northwest (NW) Africa, presumably to track changes in resources that follow a predictable climate‐related spatio‐temporal pattern. 2. Data on the abundance of adult and immature stages in the Maghreb in 2014–2016 are used to test several hypotheses regarding the autumn migration of this species. 3. A strong seasonal migratory strategy was confirmed by the all but total absence of the species in NW Africa at the end of summer and the arrival of huge numbers migrants in October and November. Migration was timed to coincide with an increase in host plant availability but not with any increase in nectar sources. 4. Flower abundance was the main predictor of adult abundance in autumn, with Ditrichia viscosa, Verbesina encelioides, and Medicago sativa being key resources that attracted enormous numbers of butterflies to oases, ruderal habitats, and oueds. The distribution of immature stages was strongly predicted by host plant abundance (with traditional agriculture representing the most important breeding habitat) and latitude (most breeding occurred in the south of the region). Also, both adults and immature stages were more common inland than in coastal areas. 5. Changes in age structure of the adult population were also noted. The number of fresh adults slowly increased, indicating that butterflies did not return in a single wave and that the first offspring of the first returners were already emerging when some butterflies were still arriving. 相似文献
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The taxonomic status of bent‐winged bats (Miniopterus) in the Western Palaearctic and adjacent regions is unclear, particularly in some areas of the eastern Mediterranean, Middle East and Arabia. To address this, we analysed an extensive collection of museum materials from all principal parts of this distribution range, i.e. North Africa, Europe and southwest Asia, using morphological (skull) and genetic approaches (mitochondrial DNA). Linear and geometric morphometric analysis of cranial and dental characteristics, together with molecular phylogeny, suggested that Miniopterus populations comprise four separate species: (1) M. schreibersii sensu strictissimo (s.str.) – occurring in Europe, coastal Anatolia, Levant, Cyprus, western Transcaucasia, and North Africa; (2) M. pallidus – occurring in inland Anatolia, Jordan, eastern Transcaucasia, Turkmenistan, Iran and southern Afghanistan (Kandahar); (3) a Miniopterus sp. – recorded from Nangarhar province in eastern Afghanistan, which we tentatively assign to M. cf. fuliginosus; and (4) a Miniopterus sp. with Afro‐tropic affinities confirmed from south‐western Arabia and Ethiopia, which we tentatively name M. cf. arenarius. The latter two species are well differentiated by skull morphology, while M. pallidus possesses very similar skull morphology to M. schreibersii. The results also suggest the existence of a possible new taxon (subspecies) within M. schreibersii s.str. inhabiting the Atlas Mountains of Morocco. © 2012 The Linnean Society of London 相似文献
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Eleanor M. L. Scerri 《Evolutionary anthropology》2017,26(3):119-135
The North African Middle Stone Age (NAMSA, ~300‐24 thousand years ago, or ka) features what may be the oldest fossils of our species as well as extremely early examples of technological regionalization and ‘symbolic’ material culture (d'Errico, Vanhaeren, Barton, Bouzouggar, Mienis, Richter, Hublin, McPherron, Louzouet, & Klein, 2009 ; Scerri, 2013a ; Richter, Grün, Joannes‐Boyau, Steele, Amani, Rué, Fernandes, Raynal, Geraads, Ben‐Ncer Hublin, McPherron, 2017 ). The geographic situation of North Africa and an increased understanding of the wet‐dry climatic pulses of the Sahara Desert also show that North Africa played a strategic role in continental‐scale evolutionary processes by modulating human dispersal and demographic structure (Drake, Blench, Armitage, Bristow, & White, 2011 ; Blome, Cohen, Tryon, Brooks, & Russell, 2012 ). However, current understanding of the NAMSA remains patchy and subject to a bewildering array of industrial nomenclatures that mask underlying variability. These issues are compounded by a geographic research bias skewed toward non‐desert regions. As a result, it has been difficult to test long‐established narratives of behavioral and evolutionary change in North Africa and to resolve debates on their wider significance. In order to evaluate existing data and identify future research directions, this paper provides a critical overview of the component elements of the NAMSA and shows that the timing of many key behaviors has close parallels with others in sub‐Saharan Africa and Southwest Asia. 相似文献
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