Studies on the Life-History of Aëdes (Skusea) Pembaensis (Theobald) (Diptera, Culicidae)

1961 ◽  
Vol 52 (2) ◽  
pp. 257-261 ◽  
Author(s):  
C. Brooke Worth ◽  
Jacinto de Sousa ◽  
M. Paul Weinbren

SummaryThe observation in Kenya that Aëdes (Skusea) pembaensis (Theo.) associates with the crab, Sesarma meinerti, was duplicated in Lumbo, on the northern coast of Mozambique. Eggs were seen abundantly on crabs inhabiting certain colonies among mangroves at the edge of a tidal estuary. Females of A. pembaensis were caught in gradually decreasing abundance at collecting sites progressively further inland from the head of the estuary, while males were almost totally confined to the breeding area. Swarms of males were not seen, and it was suspected that mating took place within crab burrows.Populations of A. pembaensis in 1959 and 1960 were approximately equivalent at Lumbo, whereas some other mosquito species with fresh-water larval stages were reduced in 1960 owing to failure of the rains. The estuarine environment, regulated by the tides, is apparently more stable than are terrestrial habitats. Cycles of A. pembaensis may therefore be less variable than among dry-land forms.Females of A. pembaensis disturbed at a crab colony were found to bite spontaneously in the day-time. Captured specimens showed a marked discrimination in biting preference for one human out of three tested. The preferred individual experienced a severe reaction to the bites, while the other two had none whatsoever.Precipitin tests indicated human beings as the only source of blood in A. pembaensis, although the method of collection probably lends bias to this observation. Eight strains of an apparently new virus were isolated from females of A. pembaensis in 1959 and four in 1960. In addition, two strains of a virus of the Bunyamwera group were isolated in 1960. The source of these viruses and their significance in A. pembaensis require further investigation.

ZooKeys ◽  
2017 ◽  
Vol 671 ◽  
pp. 119-130 ◽  
Author(s):  
Ralph E. Harbach ◽  
Thom Dallimore ◽  
Andrew G. Briscoe ◽  
C. Lorna Culverwell ◽  
Alexander G.C. Vaux ◽  
...  

We report the discovery of Aedesnigrinus (Eckstein, 1918) in the New Forest of southern England, bringing to 36 the number of mosquito species recorded in Britain. Because it seems that this species has been misidentified previously in Britain as the morphologically similar Aedessticticus (Meigen, 1838), the two species are contrasted and distinguished based on distinctive differences exhibited in the adult and larval stages. The pupa of Ae.nigrinus is unknown, but the pupa of Ae.sticticus is distinguished from the pupae of other species of Aedes by modification of the most recent key to British mosquitoes. The history of the mosquito fauna recorded in the UK is summarized and bionomical information is provided for the two species.


2020 ◽  
Vol 2 ◽  
pp. 1-18
Author(s):  
Tuncay Şur ◽  
Betül Yarar

This paper seeks to understand why there has been an increase in photographic images exposing military violence or displaying bodies killed by military forces and how they can freely circulate in the public without being censored or kept hidden. In other words, it aims to analyze this particular issue as a symptom of the emergence of new wars and a new regime of their visual representation. Within this framework, it attempts to relate two kinds of literature that are namely the history of war and war photography with the bridge of theoretical discussions on the real, its photographic representation, power, and violence.  Rather than systematic empirical analysis, the paper is based on a theoretical attempt which is reflected on some socio-political observations in the Middle East where there has been ongoing wars or new wars. The core discussion of the paper is supported by a brief analysis of some illustrative photographic images that are served through the social media under the circumstances of war for instance in Turkey between Turkish military troops and the Kurdish militants. The paper concludes that in line with the process of dissolution/transformation of the old nation-state formations and globalization, the mechanism and mode of power have also transformed to the extent that it resulted in the emergence of new wars. This is one dynamic that we need to recognize in relation to the above-mentioned question, the other is the impact of social media in not only delivering but also receiving war photographies. Today these changes have led the emergence of new machinery of power in which the old modern visual/photographic techniques of representing wars without human beings, torture, and violence through censorship began to be employed alongside medieval power techniques of a visual exhibition of tortures and violence.


2019 ◽  
Vol 9 (3) ◽  
pp. 184-196
Author(s):  
Deepshikha Rathore ◽  
Geetanjali ◽  
Ram Singh

Background: The history of traditional systems of medicine goes parallel with the history of human beings. Even today people have faith in traditional systems of medicine based on medicinal plants to meet primary health care needs. Hence, the scientific evaluation and documentation of extracts and active ingredients of medicinal plants always play a supportive role in their medicinal applications. Objective: This review aims to present the phytochemicals isolated from the genus Bombax and their pharmacological applications. Methods: The literature from research and review papers was analyzed and the information was compiled to present the pharmacological applications of various secondary metabolites from genus Bombax. Results: The genus Bombax belongs to the family Malvaceae and known for its therapeutic applications. The crude, semi-purified and purified extracts of different parts of this plant have shown potential therapeutic applications. A total of 96 articles including research and review papers were referred for the compilation of isolated phytochemicals and their chemical structures. Conclusion: We systematically summarized 176 isolated compounds from the genus Bombax. The findings show that this plant shows potential towards pharmacological activities. The activities were found more from extracts than the single isolated compounds.


Author(s):  
Bart J. Wilson

What is property, and why does our species happen to have it? The Property Species explores how Homo sapiens acquires, perceives, and knows the custom of property, and why it might be relevant for understanding how property works in the twenty-first century. Arguing from some hard-to-dispute facts that neither the natural sciences nor the humanities—nor the social sciences squarely in the middle—are synthesizing a full account of property, this book offers a cross-disciplinary compromise that is sure to be controversial: All human beings and only human beings have property in things, and at its core, property rests on custom, not rights. Such an alternative to conventional thinking contends that the origins of property lie not in food, mates, territory, or land, but in the very human act of creating, with symbolic thought, something new that did not previously exist. Integrating cognitive linguistics with the philosophy of property and a fresh look at property disputes in the common law, this book makes the case that symbolic-thinking humans locate the meaning of property within a thing. The provocative implications are that property—not property rights—is an inherent fundamental principle of economics, and that legal realists and the bundle-of-sticks metaphor are wrong about the facts regarding property. Written by an economist who marvels at the natural history of humankind, the book is essential reading for experts and any reader who has wondered why people claim things as “Mine!,” and what that means for our humanity.


Author(s):  
Liubov Vetoshkina ◽  
Yrjö Engeström ◽  
Annalisa Sannino

By skillfully shaping and producing objects human beings externalize and make real their future-oriented imaginaries and visions. Material objects created by skilled performance make human lifeworlds durable. From the point of view of history making, wooden boat building is a particularly rich domain of skilled performance. This chapter is based on two research sites, one in Finland and the other in Russia. The analysis is divided into four layers or threads of history making, namely personal history, the history of the wooden boat community, the political history of the nations and their relations, and the history of the boats themselves as objects of boat-building activity. The chapter ends by discussing our findings and their implications for the understanding of skilled performance and history making in work activities and organizations.


Author(s):  
Eleonore Stump

The doctrine that Christ has saved human beings from their sins, with all that that salvation entails, is the distinctive doctrine of Christianity. Over the course of many centuries of reflection on the doctrine, highly diverse understandings have been proposed, many of which have also raised strong positive or negative emotions in those who have reflected on them. In this book, in the context of this history of interpretation, Eleonore Stump considers this theological doctrine with philosophical care. The central question of the book is the nature of the atonement. That is, what is it that is accomplished by the passion and death of Christ (or the life, passion, and death, of Christ)? Whatever exactly it is, it is supposed to include a solution to the problem of the post-Fall human condition, with its guilt and shame. This volume canvasses major interpretations of the doctrine of the atonement that attempt to explain this solution, and it argues that all of them have serious shortcomings. In their place, Stump employs an extension of a Thomistic account of love and forgiveness to argue for a relatively novel interpretation of the doctrine, which she calls ‘the Marian interpretation.’ Stump argues that this Marian interpretation makes better sense of the doctrine of the atonement than other interpretations do, including Anselm’s well-known theory. In the process of constructing the Marian interpretation, she also discusses love, union, guilt, shame, forgiveness, retribution, punishment, shared attention, mind-reading, empathy, and various other issues in moral psychology and ethics.


Multilingua ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Pirjo Kristiina Virtanen ◽  
Francisco Apurinã ◽  
Sidney Facundes

Abstract This article looks at what origin stories teach about the world and what kind of material presence they have in Southwestern Amazonia. We examine the ways the Apurinã relate to certain nonhuman entities through their origin story, and our theoretical approach is language materiality, as we are interested in material means of mediating traditional stories. Analogous to the ways that speakers of many other languages who distinguish the entities that they talk to or about, the Apurinã make use of linguistic resources to establish the ways they interact with different entities. Besides these resources, the material means of mediating stories is a crucial tool to narrate the worlds of humans and nonhumans. Storytelling requires material mediation, and a specific context of plant substances. It also involves community meeting as a space of trust in order to become a communicative practice and effectively introduce the history of the people. Our sources are ethnography, language documentation, and autoethnography.


1990 ◽  
Vol 3 ◽  
pp. 214-256 ◽  
Author(s):  
Conrad C. Labandeira ◽  
Bret S. Beall

Since the late Paleozoic, insects and arachnids have diversified in the terrestrial world so spectacularly that they have become unquestionably the most diverse group of organisms to ever inhabit the planet. In fact, this 300 million year interval may appropriately be referred to as the age of arthropods. What is the origin and history of terrestrial arthropods? How is arthropod diversity maintained on land? In this rhetorical context we will discuss (1) the degree to which terrestriality is found in arthropods, (2) the physiological barriers to terrestrialization that arthropod clades confronted, (3) the historical record of arthropod diversity on land based on paleobiological, comparative physiological and zoogeographical evidence, and (4) some tentative answers to the “why” of terrestrial arthropod success. We are providing a geochronologic scope to terrestriality that includes not only the early history of terrestrial arthropods, but also the subsequent expansion of arthropods into major terrestrial habitats.


2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Andrea A. Conti

Medical rehabilitation is the process targeted to promote and facilitate the recovery from physical damage, psychological and mental disorders, and clinical disease. The history of medical rehabilitation is closely linked to the history of disability. In the ancient western world disabled subjects were excluded from social life. In ancient Greece disability was surmounted only by means of its complete removal, and given that disease was considered a punishment attributed by divinities to human beings because of their faults and sins, only a full physical, mental, and moral recovery could reinsert disabled subjects back in the society of “normal” people. In the Renaissance period, instead, general ideas functional for the prevention of diseases and the maintaining of health became increasingly technical notions, specifically targeted to rehabilitate disabled individuals. The history of medical rehabilitation is a fascinating journey through time, providing insights into many different branches of medicine. When modern rehabilitation emerges, around the middle of the twentieth century, it derives from a combination of management approaches focusing on the orthopaedic and biomechanical understanding of patterns of movement, on the mastering of neuropsychological mechanisms, and on the awareness of the social-occupational dimension of everyday reality.


Parasitology ◽  
1946 ◽  
Vol 37 (3-4) ◽  
pp. 192-201 ◽  
Author(s):  
J. F. A. Sprent

A description is given of the processes of copulation, formation of the egg and spermatozoon, cleavage, embryogeny and hatching in B. phlebotomum. These processes were found to be essentially similar to those in other strongyle nematodes.The anatomy of the first three larval stages is described and the observations of Conradi & Barnette (1908) and Schwartz (1924) were largely confirmed.Penetration of the skin of calves by the infective larva was observed histologically. The larvae were found to have reached the dermis within 30 min. and to have penetrated the cutaneous blood vessels within 60 min. of application to the skin. The larvae were found in the lung where the third ecdysis was in progress 10 days after penetration of the skin. A description is given of the growth of the third-stage larva in the lung, the changes which take place during the third ecdysis, and the anatomy of the fourth-stage larva.The fourth-stage larvae exsheath in the lungs and travel to the intestine. After a period of growth in which sexual differentiation takes place, the fourth ecdysis occurs and the adult parasite emerges. The time required for the attainment of maturity was found to be somewhere between 30 and 56 days after penetration of the skin.This paper was written at the Ministry of Agriculture and Fisheries Veterinary Laboratories, Wey-bridge, and the writer would like to express his gratitude to the Director, Prof. T. Dalling, also to Dr W. R. Wooldridge, chairman of the Council of the Veterinary Educational Trust for their help and encouragement. The writer's thanks are also due to Dr H. A. Baylis, Prof. R. T. Leiper and Dr E. L. Taylor for their advice and help on technical points, and to Mr R. A. O. Shonekan, African laboratory assistant, for his able co-operation.


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