scholarly journals The role of spatial mobility in malaria transmission in the Brazilian Amazon: The case of Porto Velho municipality, Rondônia, Brazil (2010-2012)

PLoS ONE ◽  
2017 ◽  
Vol 12 (2) ◽  
pp. e0172330 ◽  
Author(s):  
Jussara Rafael Angelo ◽  
Tony Hiroshi Katsuragawa ◽  
Paulo Chagastelles Sabroza ◽  
Lino Augusto Sander de Carvalho ◽  
Luiz Hildebrando Pereira da Silva ◽  
...  
Keyword(s):  
Malaria Transmission ◽  
Brazilian Amazon ◽  
Spatial Mobility ◽  
Porto Velho

Narratives of Queer Migration

2020 ◽  
Author(s):  
John Gray ◽  
Mike Baynham
Keyword(s):  
The European Union ◽  
Spatial Mobility ◽  
Class Politics ◽  
Depth Migration ◽  
Different Types ◽  
Global North ◽  
Economic Necessity ◽  
The Village ◽  
The City

This chapter considers the phenomenon of queer migration from a linguistic perspective, paying particular attention to the constitutive role of spatial mobility in narrative and its role in the construction of queer migrant identities. The chapter begins by looking at the way in which queer migration has been discussed in the literature and then moves on to address three different types of queer migration in greater depth: migration within national borders from the village/countryside to the city; migration between cities in member states within the context of the European Union; and finally, asylum-seeking within the context of migration from the Global South to the Global North. The chapter concludes by suggesting that queer migration is a complex phenomenon in which the intersection of sexuality, gender identity, desire, affect, abjection, economic necessity, class, politics, and fear for one’s life combine in ways that are unique in the lives of individual migrants.

scholarly journals An increasing role of pyrethroid-resistant Anopheles funestus in malaria transmission in the Lake Zone, Tanzania

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nancy S. Matowo ◽  
Jackline Martin ◽  
Manisha A. Kulkarni ◽  
Jacklin F. Mosha ◽  
Eliud Lukole ◽  
...  
Keyword(s):  
Malaria Transmission ◽  
Anopheles Funestus ◽  
Sub Saharan Africa ◽  
North West ◽  
Vector Population ◽  
Lake Zone ◽  
Sub Saharan ◽  
Long Lasting Insecticidal Nets ◽  
Study District

AbstractAnopheles funestus is playing an increasing role in malaria transmission in parts of sub-Saharan Africa, where An. gambiae s.s. has been effectively controlled by long-lasting insecticidal nets. We investigated vector population bionomics, insecticide resistance and malaria transmission dynamics in 86 study clusters in North-West Tanzania. An. funestus s.l. represented 94.5% (4740/5016) of all vectors and was responsible for the majority of malaria transmission (96.5%), with a sporozoite rate of 3.4% and average monthly entomological inoculation rate (EIR) of 4.57 per house. Micro-geographical heterogeneity in species composition, abundance and transmission was observed across the study district in relation to key ecological differences between northern and southern clusters, with significantly higher densities, proportions and EIR of An. funestus s.l. collected from the South. An. gambiae s.l. (5.5%) density, principally An. arabiensis (81.1%) and An. gambiae s.s. (18.9%), was much lower and closely correlated with seasonal rainfall. Both An. funestus s.l. and An. gambiae s.l. were similarly resistant to alpha-cypermethrin and permethrin. Overexpression of CYP9K1, CYP6P3, CYP6P4 and CYP6M2 and high L1014S-kdr mutation frequency were detected in An. gambiae s.s. populations. Study findings highlight the urgent need for novel vector control tools to tackle persistent malaria transmission in the Lake Region of Tanzania.

scholarly journals How Does Hybrid Governance Emerge? Role of the elite in building a Green Municipality in the Eastern Brazilian Amazon

2016 ◽  
Vol 26 (5) ◽  
pp. 337-350 ◽  
Author(s):  
Cecilia Viana ◽  
Emilie Coudel ◽  
Jos Barlow ◽  
Joice Ferreira ◽  
Toby Gardner ◽  
...  
Keyword(s):  
Brazilian Amazon ◽  
Hybrid Governance

scholarly journals LB1555 Understanding the role of the mosquito GILT in malaria transmission in the skin

2018 ◽  
Vol 138 (9) ◽  
pp. B15
Author(s):  
M. Freudzon ◽  
T. Schleicher ◽  
J. Yang ◽  
E. Fikrig
Keyword(s):  
Malaria Transmission

scholarly journals The feminist critique

2017 ◽  
Vol 30 (2) ◽  
pp. 145-161
Author(s):  
Fernanda Neubauer ◽  
Michael J. Schaefer
Keyword(s):  
Brazilian Amazon ◽  
Individual Identity ◽  
Feminist Critique ◽  
Archaeological Research ◽  
Social Lives ◽  
The Past ◽  
Marajó Island ◽  
And Gender

We discuss the important role of the feminist critique in bringing awareness to gender, childhood, and identity research, and in giving voice to the perspectives of underrepresented groups. As a case study of ancient social lives and gender, we discuss a range of Marajoara identity markers interpreted through the study of ceramic tangas (female pubic coverings) from Marajó Island in the Brazilian Amazon (A.D. 400-1400). There, tangas were made and used by women as a material representation of social position, gender, and individual identity. We argue that identity constitutes a fundamentally important aspect of archaeological research, and that the strongest case studies in identity are those that encompass a variety of gendered inferences to understand social lives of the past.

scholarly journals Species Composition and Role of Anopheles Mosquitoes in Malaria Transmission Along Badagry Axis of Lagos Lagoon, Lagos, Nigeria

2010 ◽  
Vol 2 ◽  
pp. IJIS.S4698 ◽  
Author(s):  
I.O. Oyewole ◽  
C.A. Ibidapo ◽  
O.O. Okwa ◽  
A.O. Oduola ◽  
G.O. Adeoye ◽  
...  
Keyword(s):  
Species Composition ◽  
Malaria Transmission ◽  
Control Programme ◽  
Anopheles Mosquitoes ◽  
Vector Control Programme ◽  
Baseline Information ◽  
Falciparum Sporozoite ◽  
Lagos Lagoon ◽  
Sporozoite Infection

Three communities along Badagry axis of the Lagos lagoon were sampled for indoor resting Anopheles mosquitoes in order to determine their species composition, relative abundance, density and contribution to malaria transmission in the coastal ecosystem. A total of 1938 adult female Anopheles mosquitoes collected from 2005 to 2007 constituted three species viz Anopheles gambiae, An melas and An. nili. The Polymerase Chain Reaction (PCR)–-based tests indicated that more than three-fourth of the An. gambiae s.l (75.8%) population belongs to An. gambiae s.s the remaining were An. melas. Further analysis showed that all the An. gambiae s.s was the M form. ELISA-based analyses indicated that An. gambiae s.s and An. melas were the main vectors of malaria in this area with an overall P. falciparum sporozoite infection rate of 4.8% and 6.5% respectively. Both species also maintained relatively high EIR indicating their prominent roles in malaria transmission in the study area. All the An. nili tested were negative for P. falciparum sporozoite infection. This study provides baseline information for planning vector control programme relevant to reduction of malaria transmission in the coastal areas of Nigeria.

scholarly journals Role of a patatin-like phospholipase in Plasmodium falciparum gametogenesis and malaria transmission

2019 ◽  
Vol 116 (35) ◽  
pp. 17498-17508 ◽  
Author(s):  
Pallavi Singh ◽  
Aditi Alaganan ◽  
Kunal R. More ◽  
Audrey Lorthiois ◽  
Sabine Thiberge ◽  
...  
Keyword(s):  
Plasmodium Falciparum ◽  
Malaria Transmission ◽  
Membrane Remodeling ◽  
Gene Encoding ◽  
Conditional Deletion ◽  
Male Gametes ◽  
Complex Process ◽  
Intracellular Vesicles ◽  
Vesicle Secretion

Transmission of Plasmodium falciparum involves a complex process that starts with the ingestion of gametocytes by female Anopheles mosquitoes during a blood meal. Activation of gametocytes in the mosquito midgut triggers “rounding up” followed by egress of both male and female gametes. Egress requires secretion of a perforin-like protein, PfPLP2, from intracellular vesicles to the periphery, which leads to destabilization of peripheral membranes. Male gametes also develop flagella, which assist in binding female gametes for fertilization. This process of gametogenesis, which is key to malaria transmission, involves extensive membrane remodeling as well as vesicular discharge. Phospholipase A2 enzymes (PLA2) are known to mediate membrane remodeling and vesicle secretion in diverse organisms. Here, we show that a P. falciparum patatin-like phospholipase (PfPATPL1) with PLA2 activity plays a key role in gametogenesis. Conditional deletion of the gene encoding PfPATPL1 does not affect P. falciparum blood stage growth or gametocyte development but reduces efficiency of rounding up, egress, and exflagellation of gametocytes following activation. Interestingly, deletion of the PfPATPL1 gene inhibits secretion of PfPLP2, reducing the efficiency of gamete egress. Deletion of PfPATPL1 also reduces the efficiency of oocyst formation in mosquitoes. These studies demonstrate that PfPATPL1 plays a role in gametogenesis, thereby identifying PLA2 phospholipases such as PfPATPL1 as potential targets for the development of drugs to block malaria transmission.

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