scholarly journals Seasonal Migrations of Pantala flavescens (Odonata: Libellulidae) in Middle Asia and Understanding of the Migration Model in the Afro-Asian Region Using Stable Isotopes of Hydrogen

Insects ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 890
Author(s):  
Sergey N. Borisov ◽  
Ivan K. Iakovlev ◽  
Alexey S. Borisov ◽  
Mikhail Yu. Ganin ◽  
Alexei V. Tiunov

In Middle Asia, the dragonfly Pantala flavescens makes regular seasonal migrations. In spring, sexually mature dragonflies (immigrants) arrive in this region for reproduction. Dragonflies of the aboriginal generation (residents) develop in about two months, and migrate south in autumn. Residents of Middle Asia have significantly lower δ2H values (−123.5 (SD 17.2)‰, n = 53) than immigrants (−64.4 (9.7)‰, n = 12), as well as aboriginal dragonfly species from Ethiopia (−47.9 (10.8)‰, n = 4) and the Sahel zone (−50.1 (15.5)‰, n = 11). Phenological data on P. flavescens in the Afro-Asian region and a comparison with published isotopic data on migratory insects from this region suggest that (i) the probable area of origin of P. flavescens immigrants is located in tropical parts of East Africa and/or the Arabian Peninsula and (ii) the autumn migration of Middle Asian residents to the south may also pass through the Indian Ocean. We assume that in the Afro-Asian region, there is an extensive migration circle of P. flavescens covering East Africa, Central Asia and the Indian subcontinent with a total length of more than 14,000 km.

1992 ◽  
Vol 20 (4) ◽  
pp. 5-38 ◽  
Author(s):  
Thomas D. Boston

Prior to the sixteenth century, the Indian Ocean trading network was one of the wealthiest commercial regions in the world. It included states of East Africa, the Arabian peninsula, the Indian subcontinent, Southeast Asia, China and Japan. By circumnavigating Africa, Portugal was the first European nation to gain access to the region. Through the exercise of naval superiority, blockading of strategic shipping lanes, imposition of duties and expulsion of Swahili and Muslim merchants, Portugal exercised a mercantile monopoly which ultimately led to the region's rapid economic decline. Using rare historical documents from Portugal and Africa, this study traces the effects of Portuguese expansion on the economies of East Africa and trade in the Indian Ocean.


1982 ◽  
Vol 13 (2) ◽  
pp. 349-386
Author(s):  
Hermann Kellenbenz

This study is intended to give a short survey on the development of shipping and trade between two main German ports and the Indian Ocean from the early years of the Bismarck period to the beginning of the First World War. The study deals with the area from East Africa to East India and from Indochina to Indonesia. China, the Philippines, and Australia will not be considered. It is based on an analysis of published material.


1922 ◽  
Vol 59 (5) ◽  
pp. 200-212
Author(s):  
Robert R. Walls

Portuguese Nyasaland is the name given to the most northern part of Portuguese East Africa, lying between Lake Nyasa and the Indian Ocean. It is separated from the Tanganyika territory in the north by the River Rovuma and from the Portuguese province of Mozambique in the south by the River Lurio. The territory measures about 400 miles from east to west and 200 miles from north to south and has an area of nearly 90,000 square miles. This territory is now perhaps the least known part of the once Dark Continent, but while the writer was actually engaged in the exploration of this country in 1920–1, the Naval Intelligence Division of the British Admiralty published two handbooks, the Manual of Portuguese East Africa and the Handbook of Portuguese Nyasaland, which with their extensive bibliographies contained practically everything that was known of that country up to that date (1920). These handbooks make it unnecessary in this paper to give detailed accounts of the work of previous explorers.


Author(s):  
FRANCISCO APELLÁNIZ

Abstract This article presents and discusses a source of unique importance for our knowledge of early modern global exchanges. Produced in 1503 by the Egyptian administration and found among the records of a Venetian company with global commercial interests, the document records hitherto unknown connections between the Arabian Peninsula, the Indian Subcontinent and Southeast Asia, followed by cargo figures. By sending the Memorandum to the head office in Venice, the Company's agents in Egypt were labouring to solve the most important concern of Venice's information network, that of coordinating Indian with Mediterranean trading seasons. By analysing the document's context, namely, a company involved in the export of central European metals to Asia, this article focuses on the capacity of its agents to gather information through collaboration, networking and ultimately, friendship with Muslim partners and informers. The story of the 1503 Memorandum and its transmission raises questions about the mixed networks underpinning global exchanges, the role of information and the drive of the late Mamluk sultanate into the world of the Indian Ocean.


Author(s):  
Edward A. Alpers

Almost forty years ago, the author published an article on Gujarat and East Africa from the sixteenth to the nineteenth centuries. Although several other scholars had written serious historical works either about or including Indian traders in eastern Africa in the modern period, at the time it was a pioneering piece for historians of East Africa. While the author has written and continues to write about the African diaspora in the Indian Ocean world and, more recently, the islands of this vast oceanic space now referred to as Indian Ocean Africa, he has not again written anything specifically about Gujarat and the Indian Ocean, nor about Gujarati traders in East Africa. This chapter attempts to review the last forty years of scholarship written in English on Gujarat and the Indian Ocean with a focus on transregional trade and traders. What is hoped from this overview is a sense of how current debates have developed over these decades and where further research is called for.


Author(s):  
Nathan Marvin ◽  
Blake Smith

France was a latecomer to the Indian Ocean among European powers. After some tentative and short-lived initiatives by private merchants, the first French East India Company was founded in 1664 by a French monarchy eager to catch up with England and the Netherlands, which had founded companies of their own at the beginning of the 17th century. Competing with the English and Dutch to replace the Portuguese as the preeminent European power in the Indian Ocean, France gradually established a network of colonial holdings that included the island colonies of the Mascarenes in the southwestern Indian Ocean (Réunion and Mauritius) as well as a network of trading posts along the shores of the Indian subcontinent. Plans to expand this colonial empire to Madagascar, however, met with repeated failure. Established as a regional power by the middle of the 18th century, France would be reduced by the century’s end to the role of a spectator of Britain’s rising hegemony. Nevertheless, France held on to some of its Indian Ocean territories, including Réunion and Pondicherry in South Asia. These outposts of French imperialism would inspire nostalgia, regret, and new colonial ambitions among metropolitan observers, and they would become sites of cultural hybridity and exchange. Indeed, while France’s empire in the Indian Ocean is often overshadowed by the emergence of British dominance in the 19th century, or by the intensity of French investment in the Caribbean, the Indian Ocean was a key area of French military, diplomatic, economic, and cultural interest in the 17th and 18th centuries, and beyond.


Author(s):  
Sue Peabody

During Furcy’s lawsuit more than half a century after the fact, two receipts were offered as proof that his mother, Madeleine, had been sold as a child slave by Portuguese traders in the French trading center at Chandernagor in Bengal, India, in the 1760s. Although these receipts may be forgeries, they offer plausible details consistent with the prevalence of children in the Indian Ocean slave trade in the eighteenth century. Frequent famines caused parents to pawn their children into debt bondage. European traders took slaves, including kidnapped children, from the Indian subcontinent to overseas colonies, thus separating families permanently. Madeleine’s mistress, Anne Despense de la Loge, was an unusual single French woman living in Chandernagor, who may have been part of an informal religious community.


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