Aleurocanthus woglumi (citrus blackfly).

Author(s):  
Ru Nguyen

Abstract Feeding by A. woglumi damages new leaf growth, reducing nitrogen levels in infested leaves. Sooty mould growing on honeydew deposits blocks light and air from the leaves, reducing photosynthesis. This can reduce fruit set by up to 80% or more (Eberling, 1954). Crop losses of limes due to A. woglumi were recorded at 25% by Watts and Alam (1973). In Mexico, citrus blackfly is regarded as a threat to citrus crops and to other crops such as mangoes, pears or coffee grown adjacent to heavily infested citrus groves. A. woglumi is a constant menace to citrus and other crops in the USA and Venezuela. It has been recorded seriously affecting citrus in India (David and Subramaniam, 1976). Le Pelley (1968) mentions it as a severe pest of coffee in the New World.

2018 ◽  
Vol 23 (5) ◽  
pp. 946
Author(s):  
Fabio A. Hernandes ◽  
Than J. Boves ◽  
Alix E. Matthews

Four new feather mite species of the genus Amerodectes Valim & Hernandes, 2010 (Proctophyllodidae: Pterodectinae) are described from New World warblers (Passeriformes: Parulidae) of USA: Amerodectes ischyros sp. nov. from Setophaga caerulescens (Gmelin, 1789), A. charitomenos sp. nov. from S. dominica (Linnaeus, 1766), A. protonotaria sp. nov. from Protonotaria citrea (Boddaert, 1783), and A. jonesborensis sp. nov. from Parkesia noveboracensis (Gmelin, 1789). Information on the DNA barcode sequence of these four species was also analyzed.


2022 ◽  
Author(s):  
Novum Drone

This is why the Novum Drone could be improved, with relative resistance and very little autonomy. Speaking of the battery, it is this which ensures a greater or lesser autonomy. It has now been two good years that Novum Droneare among the most sold electronic objects in the USA but also throughout the world. They meet this need to be able to take the place of the bird and to be able to discover new places. Using this device it really feels like you are in the air and entering a new world. It is also an object that attracts the curiosity of people who see it flying. You will thus be able to fly over houses, explore places inaccessible on foot, in short have new sensations. So how does it work? Well, you have to know several things. First of all, it's an object that flies through four propellers. This is why the drone is also called a quadcopter which literally means four propellers. Note that some models may have more propellers. To make these propellers work, you need a motor and it needs to be powerful enough to allow the whole drone to fly. This motor is powered by a battery which provides energy to the assembly. Consideration should also be given to the materials used to build the drone. Solid materials must be used so that the machine can withstand wind, rain and shocks. However, the drone must not be too heavy at the risk of not being able to fly. Elevation is actually the same setting as range, because it is cumulative with horizontal distance. So, when you choose a drone, you need to know if you plan to fly it high up or especially horizontally, that is to say over a length. Note that some Novum Droneare dedicated to drone racing, which are more and more popular. More and more professionals are using drones. And this is particularly the case in the audiovisual world. Whether it is for capturing film shots, making reports and more, a drone is very practical. If you try to go too high, you may lose your drone's signal and have some issues. The speed of the drone is expressed in km / h as for a car or any other vehicle. Welcome to Novum Drone this website will allow you to know everything about the drone. There you will find a buying guide, reviews and tests. But also advice on how to use your drone properly. SPACILITY LIGHTWEIGHT, FREE FLYING PACK: At less than 249g, it weighs as much as an apple and fits in the palm of your hand. Compact and practical, Novum Drone is your perfect travel companion, transforming the way you capture your favorite memories. Read for more info visit official website click here :- https://ipsnews.net/business/2021/12/04/novum-drone-reviews-performance-features-price-scam/ https://paper.li/Novum-Drone https://acrochat.com/read-blog/81907 https://coldnetwork.net/threads/novum-drone-reviews.56428/ https://sites.google.com/view/novum-drone/home https://writeupcafe.com/novum-drone-review-how-does-it-work-price-scam-or-legit/ https://bigkis.com/read-blog/38605


2016 ◽  
Vol 20 (4) ◽  
pp. 395-401
Author(s):  
Andrei V Grinëv ◽  
Richard L Bland

This article is dedicated to an analysis of Russian cultural borrowings from the Natives of Alaska and Aleutian Islands during the second half of the 18th century until 1867, when these territories were sold to the USA. As this research shows, the Russians, in the process of their colonization of the New World, borrowed objects of a predominantly utilitarian character in the sphere of material culture. Most of these borrowings took place in the 18th century, when the Russians had weak connections with the metropolis and there was a scarcity of European goods. The spiritual culture of the Natives, with the exception of some linguistic borrowings, chiefly of a toponymic character, remained outside the cultural circle of the immigrants from Russia.


2000 ◽  
Vol 10 (1) ◽  
pp. 120-126 ◽  
Author(s):  
Bruce W. Wood

There is increasing evidence of substantial pollination related crop losses by pecan [Carya illinoensis (Wangenh.) K. Koch] orchards. These most likely occur in block-type orchards consisting of only one or two cultivars, but can also occur at locations with a great number of different genotypes nearby. Main crop cultivars should generally be within about two rows of pollinizers to ensure cross-pollination. Thus, block widths exceeding about four rows between pollinizers are especially likely to exhibit serious pollination problems. Scattered trees of off-type genotypes are potentially of major importance as backup orchard pollinizers. Tree age/size and spring temperatures influence the characteristics of flower maturity windows and are probably primary factors contributing to pollination-related fruit-set losses in many block-type orchards. Flower maturity tends to be earlier in older/larger trees while warmer springs accelerate catkin development relative to that of pistillate flowers. Because of substantial variability in relative differences associated with initiation and duration of flower maturity windows within either protandrous or protogynous flowering types (i.e., Type I or II), selection of complementary pollinizers should be based on the relatively high resolution 30-class flowering classification system rather than the traditional low resolution 2-class system. Other factors sometime causing pollination related crop losses are either abnormally wet weather or strong dry winds during the pollination period or abnormally warm or cool springs. Pollination problems can be visually detected by noting premature non insect related post pollination fruit drop or diminishing fruit set with increasing distance from pollinator trees or off-type genotypes within the orchard.


Viruses ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 398 ◽  
Author(s):  
Rafaela S. Fontenele ◽  
Andrew M. Salywon ◽  
Lucas C. Majure ◽  
Ilaria N. Cobb ◽  
Amulya Bhaskara ◽  
...  

Cactaceae comprise a diverse and iconic group of flowering plants which are almost exclusively indigenous to the New World. The wide variety of growth forms found amongst the cacti have led to the trafficking of many species throughout the world as ornamentals. Despite the evolution and physiological properties of these plants having been extensively studied, little research has focused on cactus-associated viral communities. While only single-stranded RNA viruses had ever been reported in cacti, here we report the discovery of cactus-infecting single-stranded DNA viruses. These viruses all apparently belong to a single divergent species of the family Geminiviridae and have been tentatively named Opuntia virus 1 (OpV1). A total of 79 apparently complete OpV1 genomes were recovered from 31 different cactus plants (belonging to 20 different cactus species from both the Cactoideae and Opuntioideae clades) and from nine cactus-feeding cochineal insects (Dactylopius sp.) sampled in the USA and Mexico. These 79 OpV1 genomes all share > 78.4% nucleotide identity with one another and < 64.9% identity with previously characterized geminiviruses. Collectively, the OpV1 genomes display evidence of frequent recombination, with some genomes displaying up to five recombinant regions. In one case, recombinant regions span ~40% of the genome. We demonstrate that an infectious clone of an OpV1 genome can replicate in Nicotiana benthamiana and Opuntia microdasys. In addition to expanding the inventory of viruses that are known to infect cacti, the OpV1 group is so distantly related to other known geminiviruses that it likely represents a new geminivirus genus. It remains to be determined whether, like its cactus hosts, its geographical distribution spans the globe.


2020 ◽  
Vol 7 (3) ◽  
pp. 288-299
Author(s):  
P. I. Pashkovsky ◽  
E. V. Kryzhko

The phenomenon of «children’s» movements has historical analogs, which traditionally were the result of thoughtful technologies of adults, which were aimed at realizing their interests and achieving specific goals. The use of geopolitical and civilizational approaches has led to the consideration of the phenomenon of «children’s» eco-strikes as a political technology of the initiators of a New World Order. The genesis, essence and purpose of the «Greta Thunberg project» and mass environmental actions in the context of the formation of a New World Order and the interests of Russia have been characterized. It is shown that the initiators of this technology are the «old» globalist and neoliberal elites of Western states, part of the American establishment, international big capital and powerful corporations in the non-material digital sphere. To achieve their goals of neutralizing opponents in the economic and political spheres, they use the protest potential of the «greens», which over the past few decades have actually become part of the Western neoliberal elite. In the context of efforts to create a New World Order, these actors seek to maintain and strengthen their power, continue to exploit third world countries, suppress existing anti-system movements and weaken their main geopolitical competitors – mainly China and Russia, which are looking for safe transport routes and new sources of resources. Therefore, on the initiative of the globalist and neoliberal elites, projects are being put forward to create ecozones in resource-rich «disputed areas» and, as a result, to preserve the prospects for economic activity there. The image of «children’s» eco-strikes, which is presented by the media, reproduces a new social idea and stimulates support from the electorate for the purpose of the transformation of the World Order, which is confirmed by the fact that the movement is massive in various countries of the world. Youth strikes with environmental slogans help to shift the dominant positions from the traditional industrial-resource elite to the digital elite, opening up new financial and economic opportunities and prospects for global leadership for the latter. The intensification of this movement coincided in time with the USA claims to the Northern Sea Route and the development of Arctic resources, which directly affects the interests of Russia.


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