scholarly journals Wolbachia infection prevalence as common insects’ endosymbiont in the rural area of Yogyakarta, Indonesia

2020 ◽  
Vol 21 (12) ◽  
Author(s):  
Dian Aruni Kumalawati ◽  
Endah Supriyati ◽  
Mifta Pratiwi Rachman ◽  
Rizky Oktriani ◽  
Irianti Kurniasari ◽  
...  

Abstract. Kumalawati DA, Supriyati E, Rachman MP. Oktriani R, Kurniasari I, Candrasari DS, Hidayati L, Handayaningsih AE, Probowati VC, Arianto B, Wardana DS, Pramuko NB, Utari A, Tantowijoyo W, Arguni E. 2020. Wolbachia infection prevalence as common insects’ endosymbiont in the rural area of Yogyakarta, Indonesia. Biodiversitas 21: 5608-5614. Control for mosquito-borne diseases such as dengue and chikungunya using vectors is urgently required. The World Mosquito Program, a multinational collaborative research program, is currently studying for the ability of Wolbachia-infected Aedes aegypti to control dengue. Community concerns on Wolbachia's natural existence in their surrounding living area. This study presents the field study of Wolbachia pipientis in insects commonly found in rural daily life. W. pipientis is an endosymbiotic bacterium commonly found in arthropods. Insects were collected from five villages in Sleman and Bantul District, Yogyakarta Province, Indonesia, from July to December 2012 and screened for Wolbachia infection using PCR. One hundred insects, including butterflies, moths, mosquitoes, flies, were collected. The results indicated that 44.9% of identified insect species were positive for Wolbachia pipientis, which support the existing data from other regions on the spread of Wolbachia infection in insects.

2010 ◽  
Vol 7 (2) ◽  
pp. 187-189 ◽  
Author(s):  
Z. Lewis ◽  
F. E. Champion de Crespigny ◽  
S. M. Sait ◽  
T. Tregenza ◽  
N. Wedell

The endosymbiotic bacterium Wolbachia pipientis manipulates host reproduction by rendering infected males reproductively incompatible with uninfected females (cytoplasmic incompatibility; CI). CI is believed to occur as a result of Wolbachia -induced modifications to sperm during maturation, which prevent infected sperm from initiating successful zygote development when fertilizing uninfected females' eggs. However, the mechanism by which CI occurs has been little studied outside the genus Drosophila . Here, we show that in the sperm heteromorphic Mediterranean flour moth, Ephestia kuehniella , infected males transfer fewer fertile sperm at mating than uninfected males. In contrast, non-fertile apyrene sperm are not affected. This indicates that Wolbachia may only affect fertile sperm production and highlights the potential of the Lepidoptera as a model for examining the mechanism by which Wolbachia induces CI in insects.


2016 ◽  
Vol 3 (2) ◽  
pp. 200-224
Author(s):  
Bilge Deniz Çatak

Filistin tarihinde yaşanan 1948 ve 1967 savaşları, binlerce Filistinlinin başka ülkelere göç etmesine neden olmuştur. Günümüzde, dünya genelinde yaşayan Filistinli mülteci sayısının beş milyonu aştığı tahmin edilmektedir. Ülkelerine geri dönemeyen Filistinlilerin mültecilik deneyimleri uzun bir geçmişe sahiptir ve köklerinden koparılma duygusu ile iç içe geçmiştir. Mersin’de bulunan Filistinlilerin zorunlu olarak çıktıkları göç yollarında yaşadıklarının ve mülteci olarak günlük hayatta karşılaştıkları zorlukların Filistinli kimlikleri üzerindeki etkisi sözlü tarih yöntemi ile incelenmiştir. Farklı kuşaklardan sekiz Filistinli mülteci ile yapılan görüşmelerde, dünyanın farklı bölgelerinde mülteci olarak yaşama deneyiminin, Filistinlilerin ulusal bağlılıklarına zarar vermediği görülmüştür. Filistin, mültecilerin yaşamlarında gelenekler, değerler ve duygusal bağlar ile devam etmektedir. Mültecilerin Filistin’den ayrılırken yanlarına aldıkları anahtar, tapu ve toprak gibi nesnelerin saklanıyor olması, Filistin’e olan bağlılığın devam ettiğinin işaretlerinden biridir.ABSTRACT IN ENGLISHPalestinian refugees’ lives in MersinIn the history of Palestine, 1948 and 1967 wars have caused fleeing of thousands of Palestinians to other countries. At the present time, its estimated that the number of Palestinian refugees worldwide exceeds five million. The refugee experience of Palestinians who can not return their homeland has a long history and intertwine with feeling of deracination. Oral history interviews were conducted on the effects of the displacement and struggles of daily life as a refugee on the identity of Palestinians who have been living in Mersin (city of Turkey). After interviews were conducted with eight refugees from different generations concluded that being a refugee in the various parts of the world have not destroyed the national entity of the Palestinians. Palestine has preserved in refugees’ life with its traditions, its values, and its emotional bonds. Keeping keys, deeds and soil which they took with them when they departed from Palestine, proving their belonging to Palestine.


GIS Business ◽  
2019 ◽  
Vol 14 (3) ◽  
pp. 202-206
Author(s):  
SAJITHA M

Food is one of the main requirements of human being. It is flattering for the preservation of wellbeing and nourishment of the body.  The food of a society exposes its custom, prosperity, status, habits as well as it help to develop a culture. Food is one of the most important social indicators of a society. History of food carries a dynamic character in the socio- economic, political, and cultural realm of a society. The food is one of the obligatory components in our daily life. It occupied an obvious atmosphere for the augmentation of healthy life and anticipation against the diseases.  The food also shows a significant character in establishing cultural distinctiveness, and it reflects who we are. Food also reflected as the symbol of individuality, generosity, social status and religious believes etc in a civilized society. Food is not a discriminating aspect. It is the part of a culture, habits, addiction, and identity of a civilization.Food plays a symbolic role in the social activities the world over. It’s a universal sign of hospitality.[1]


Author(s):  
Yuriko Saito

This chapter argues for the importance of cultivating aesthetic literacy and vigilance, as well as practicing aesthetic expressions of moral virtues. In light of the considerable power of the aesthetic to affect, sometimes determine, people’s choices, decisions, and actions in daily life, everyday aesthetics discourse has a social responsibility to guide its power toward enriching personal life, facilitating respectful and satisfying interpersonal relationships, creating a civil and humane society, and ensuring the sustainable future. As an aesthetics discourse, its distinct domain unencumbered by these life concerns needs to be protected. At the same time, denying or ignoring the connection with them decontextualizes and marginalizes aesthetics. Aesthetics is an indispensable instrument for assessing and improving the quality of life and the state of the world, and it behooves everyday aesthetics discourse to reclaim its rightful place and to actively engage with the world-making project.


Biology ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 10
Author(s):  
Antoine Danchin ◽  
Tuen Wai Ng ◽  
Gabriel Turinici

Background: Starting late 2019, a novel coronavirus spread from the capital of the Hubei province in China to the rest of the country, then to most of the world. To anticipate future trends in the development of the pandemic, we explore here, based on public records of infected persons, how variation in the virus tropism could end up in different patterns, warranting a specific strategy to handle the epidemic. Methods: We use a compartmental model to describe the evolution of an individual through several possible states: susceptible, infected, alternative infection, detected, and removed. We fit the parameters of the model to the existing data, taking into account significant quarantine changes where necessary. Results: The model indicates that Wuhan quarantine measures were effective, but that alternative virus forms and a second propagation route are compatible with available data. For the Hong Kong, Singapore, and Shenzhen regions, the secondary route does not seem to be active. Conclusions: Hypotheses of an alternative infection tropism (the gut tropism) and a secondary propagation route are discussed using a model fitted by the available data. Corresponding prevention measures that take into account both routes should be implemented to the benefit of epidemic control.


2021 ◽  
pp. 146879762199293
Author(s):  
Michelle Duffy ◽  
Judith Mair

In their editorial for the first issue of Tourist Studies, Adrian Franklin and Mike Crang made us aware that tourism research had shifted to an exploration of the extraordinary everyday where ‘more or less everyone now lives in a world rendered or reconfigured as interesting, entertaining and attractive – for tourists’. From our standpoint 20 years later, we suggest this particular departure point has important insights to offer our understanding of a quintessential tourism event, that of the festival, which now intervenes in daily life in all manner of ways. In this commentary, we present a reflective commentary on recent scholarship that advocates for more rigour in festival studies, with greater theory development and testing within the festival context, and how this work is suggestive of future directions for festival research. We present several areas that are ripe for further research, particularly given the tumultuous nature of the world we are living in, such as the challenges of climate change and how we might socialise in a post-Covid world. Much has changed in the 20 years since the inception of Tourist Studies, but festivals remain resilient – they will re-emerge in future, perhaps not unscathed but with a renewed sense of purpose.


Genetics ◽  
2003 ◽  
Vol 165 (4) ◽  
pp. 2029-2038 ◽  
Author(s):  
Jason L Rasgon ◽  
Thomas W Scott

AbstractBefore maternally inherited bacterial symbionts like Wolbachia, which cause cytoplasmic incompatibility (CI; reduced hatch rate) when infected males mate with uninfected females, can be used in a program to control vector-borne diseases it is essential to understand their dynamics of infection in natural arthropod vector populations. Our study had four goals: (1) quantify the number of Wolbachia strains circulating in the California Culex pipiens species complex, (2) investigate Wolbachia infection frequencies and distribution in natural California populations, (3) estimate the parameters that govern Wolbachia spread among Cx. pipiens under laboratory and field conditions, and (4) use these values to estimate equilibrium levels and compare predicted infection prevalence levels to those observed in nature. Strain-specific PCR, wsp gene sequencing, and crossing experiments indicated that a single Wolbachia strain infects Californian Cx. pipiens. Infection frequency was near or at fixation in all populations sampled for 2 years along a >1000-km north-south transect. The combined statewide infection frequency was 99.4%. Incompatible crosses were 100% sterile under laboratory and field conditions. Sterility decreased negligibly with male age in the laboratory. Infection had no significant effect on female fecundity under laboratory or field conditions. Vertical transmission was >99% in the laboratory and ∼98.6% in the field. Using field data, models predicted that Wolbachia will spread to fixation if infection exceeds an unstable equilibrium point above 1.4%. Our estimates accurately predicted infection frequencies in natural populations. If certain technical hurdles can be overcome, our data indicate that Wolbachia can invade vector populations as part of an applied transgenic strategy for vector-borne disease reduction.


2011 ◽  
Vol 50-51 ◽  
pp. 521-525
Author(s):  
Xian Mei Fang

Grid is an emerging infrastructure which enables effective coordinate access to various distributed computing resources in order to serve the needs of collaborative research and work across the world. Grid resource management is always a key subject in the grid computing. We first analyze the resource management in the grid computing environment, then according to the load imbalance question in the ant colony optimization algorithm, propose an improved algorithm that suits to be used in the grid environment.


Janus Head ◽  
2011 ◽  
Vol 12 (1) ◽  
pp. 203-221
Author(s):  
David D. Dillard-Wright ◽  

Descriptions of “aesthetic arrest,” those ecstatic moments that lift the common sense subject-object dichotomy, abound in Merleau-Ponty’s writings. These special experiences, found in both artistic and mystical accounts, arise from the daily life of ordinary perception. Such experiences enable the artist, philosopher, or mystic to overturn received categories and describe phenomena in a creative way; they become dangerous when treated as the sine qua non of aesthetic experience. Aesthetic arrest, though rare in consumer society, need not be overwhelmed by the flood of information and can still provide fresh glimpses into the world as lived.


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