scholarly journals Bontia daphnoides (white alling).

Author(s):  
Jeanine Vélez-Gavilán

Abstract Bontia daphnoides is a shrub species native to the Caribbean and South America, which has been introduced to Cuba and the USA. B. daphnoides is considered invasive in Cuba, but Oviedo Prieto et al. (2006) provide conflicting information about the species occurrence in the country. They report it as only rarely seen in mangroves in the west part of the country, but later in the same document they list it as invasive in that same area. More information is needed to determine the invasiveness of this species in Cuba. The species is not considered invasive in the two states where it has been introduced in the USA (Florida and Hawaii).

1996 ◽  
Vol 86 (5) ◽  
pp. 617-628 ◽  
Author(s):  
D.J. Williams

AbstractThe mealybug Maconellicoccus hirsutus (Green) occurs in many tropical and subtropical parts of the Old World and extends into some temperate areas. It has now reached the West Indies where it is causing extensive damage to plants. There is concern that it may be introduced to the southern USA and to Central and South America. A brief account is given of reported damage caused by M. hirsutus to some commercial and food crops in Asia and Africa and the species is redescribed. M. multipori (Takahashi), now known from a wide area in southern Asia, is redescribed, and M. ramchensissp. n. from Nepal, is described as new. These two species are closely related to M. hirsutus and can easily be mistaken for it. M. hirsutus and M. multipori are sometimes intercepted at quarantine inspection of plants and plant produce in the USA and Europe. In order to aid identification, a key is provided to the eight species presently included in the genus Maconellicoccus Ezzat.


2021 ◽  
Author(s):  
Jo Anne Crouch

Abstract Basil downy mildew was first identified from Uganda during 1932 and 1937, resulting in significant crop losses (Hansford, 1933; Hansford, 1939). Following these original outbreaks, the disease was reported sporadically in Africa during the twentieth century: in Tanzania in 1960 (Riley, 1960), then again in Benin during 1998 (Gumedzoe et al., 1998). The disease was first identified outside of Africa in 2001, when it was reported from Switzerland (Belbahri et al., 2005). Unlike the intermittent African outbreaks of the twentieth century, the twenty-first century outbreaks of basil downy mildew are persistent, and the geographic range of P. belbahrii continues to expand. Since 2001, P. belbahrii has spread throughout Europe, North America, Asia, and parts of Africa, Central and South America, and the Caribbean. Losses incurred due to basil downy mildew in the USA alone are estimated to reach tens of millions of dollars (Wyenandt et al., 2015).


Itinerario ◽  
2000 ◽  
Vol 24 (2) ◽  
pp. 126-145
Author(s):  
Jochen Meibner

This article is specifically concerned with ‘American’ agriculture between 1820 and 1930. Let me emphasise straight away how unusual and problematic such an approach is. After all, it covers such disparate phenomena as plantation agriculture in the southern states of the US, the Caribbean, or Brazil, rural household economies working at subsistence level in New England or in the highlands of the Andes in South America, extensive cattle farming in the frontier regions of the southern part of South America, in the west of the USA, and in the north of Mexico and so on. The most varied geographical and climatic conditions for agricultural production can be found in the Americas, ranging from the North American plains to the Argentine Pampa, the highlands of the Andes region and Mexico to the coastal regions on the Atlantic and Pacific including the Caribbean. The extension of this subject becomes all the more apparent when we realise how wide the range of changes really was: in the USA, for example, this era is defined by the transition from an agricultural to an industrial society, in agricultural technology from the simple wooden plough to the tractor, and with regard to work systems, to name just one example, the end of slavery.


1984 ◽  
Vol 44 (1) ◽  
pp. 1-26 ◽  
Author(s):  
David W. Galenson

Indentured servitude appeared in Virginia by 1620. Initially a device used to transport European workers to the New World, over time servitude dwindled as black slavery grew in importance in the British colonies. Indentured servitude reappeared in the Americas in the mid-nineteenth century as a means of transporting Asians to the Caribbean sugar islands and South America following the abolition of slavery. Servitude then remained in legal use until its abolition in 1917. This paper provides an economic analysis of the innovation of indentured servitude, describes the economic forces that caused its decline and disappearance from the British colonies, and considers why indentured servitude was revived for migration to the West Indies during the time of the great free migration of Europeans to the Americas.


Author(s):  
Randy M. Browne

The Guianas span some nine hundred miles of Atlantic coast in northern South America, from the Orinoco River in the west to the Amazon River delta in the east. The name, from an indigenous word meaning “land of many waters,” is fitting for a region dissected by thousands of rivers and where most people live along the coast. Far off the tourist paths of the Caribbean Sea and Latin America, the Guianas are also understudied, despite having been the scene of intense European imperial rivalries, colonialism, and slavery for several centuries. Though geographically part of South America, the Guiana colonies have historically and culturally been considered part of the circum-Caribbean. Today, the Guianas are made up of three major political territories: the independent Republic of Guyana (formerly British Guiana and composed of Berbice, Demerara, and Essequibo), the Republic of Suriname (a former Dutch colony first established by the English), and French Guiana or Guyane (once a colony and now an overseas department of France and part of the European Union). Home to numerous and diverse indigenous societies, including Arawakan-speaking groups who migrated to the Caribbean islands, the Guianas were “discovered” by Columbus in 1498 on his third voyage to the Americas, but they became the site of sustained European exploration and conquest only in the early 17th century. In the wake of Sir Walter Ralegh’s wildly exaggerated account of his 1594–1595 voyage, which advanced the myth of a city said to be ruled by a golden king named “El Dorado,” English, Dutch, and French explorers jockeyed for access to the vast region between Spanish claims in the west and Portuguese Brazil in the east. The Dutch were the most successful early colonizers, establishing trading posts and eventually colonies along the Demerara, Essequibo, and Berbice Rivers. They also captured Suriname from the English. Much of the scholarship on the Guianas understandably concentrates on Dutch colonialism and especially on Suriname, where the Dutch established a major slave society by the early 18th century. There is also a growing body of scholarship on Berbice, Demerara, and Essequibo, both under Dutch rule and during the period when the colonies were controlled by Great Britain (1803–1966), when the slave system expanded rapidly until emancipation (1834) and where planters responded to the post-slavery labor crisis by importing large numbers of indentured laborers, primarily from India. The experience of indentured Asian laborers, who also immigrated to Suriname after slavery was abolished there, has also been the subject of much study, both by historians of the Indian diaspora and by Caribbean historians. Overall, scholarship on the Guianas is uneven and linguistically fractured, with a large number of works on the Dutch Guianas and especially Suriname, most of which are written in Dutch; a smaller but sizable body of work on British Guiana is in English, and relatively little scholarship has been done on French Guiana, almost of all of which is in French. The historiography of the Guianas thus reflects the region’s historical divisions along imperial and linguistic lines and the persistent effects of colonialism.


2021 ◽  
Author(s):  
Judith K. Brown

Abstract Cowpea mild mottle virus (CPMMV) infects a wide range of cultivated legumes. It causes severe mosaic and/or necrosis on the leaves, stems and pods of beans (Phaselous), cowpea (Vigna) and soyabean (Glycine max). Yield losses of 64-80% have been recorded in groundnuts in Kenya (Bock et al., 1976, 1977) and 10-100% in soyabean in Brazil and Argentina (Brown and Rodrigues, 2017). The virus is transmitted in a non-persistent manner by the whitefly, Bemisia tabaci. CPMMV is considered endemic to Africa, but has spread to India, South-East Asia, South America, the Caribbean, Puerto Rico and Mexico. Introduction of the virus to Puerto Rico, and possibly also Mexico, is thought to have been through infected seed from South America and perhaps Africa. The virus poses a threat to soyabean production in the USA and, if introduced into mainland USA, CPMMV has potential to spread through seed, on infected ornamental or vegetable transplants, and by the viruliferous whitefly, itself if previously associated with a virus-infected host.


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