scholarly journals Pest Control Potential of Social Wasps in Small Farms and Urban Gardens

Insects ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 192 ◽  
Author(s):  
Prezoto ◽  
Maciel ◽  
Detoni ◽  
Mayorquin ◽  
Barbosa

In environments undergoing constant transformation due to human action, such as deforestation and urbanization, the emergence of pests has become a challenge for agriculture and human welfare. In Brazil, over a thousand tonnes of pesticides are used annually, causing serious environmental damage such as the decline of insect populations. It is necessary to search for control alternatives in order to reduce the environmental impact caused by insecticides. This review aims to describe the use of social wasps as agents of biological control, focusing on the perspectives of their use in small farms and urban gardens, and to discuss the benefits of using this method. Studies have shown that 90–95% of the prey captured by wasps in small crops is made of leaf-eating caterpillars. In urban gardens, wasps diversify their prey, among which potential disease vectors, such as dipterans, stand out. We outline techniques for managing social wasp colonies in small farm and urban garden settings, including the use of artificial shelters. Among the advantages of using wasps as control agents, we highlight the practicality of the method, the low operational cost, the absence of prey resistance and the decrease of the use of insecticides.

Sociobiology ◽  
2020 ◽  
Vol 67 (2) ◽  
pp. 129
Author(s):  
Marcos Magalhães de Souza ◽  
Gabriel Silva Teófilo-Guedes ◽  
Ederson Tadeu Bueno ◽  
Lucas Rocha Milani ◽  
Alex Sandro Barros De Souza

The present study was developed aiming to evaluate the richness and biogeography of social wasp species in the Brazilian savanna, Cerrado. In order to do so, we gathered data from specialized literature and field samplings performed at Sempre-Vivas National Park, northeastern Minas Gerais state. 18 genera and 137 species were recorded, with 4 endemic species of the Mischocytiarus genus. The results showed that Cerrado houses 40% of Brazilian Polistinae fauna and that Sempre-Vivas National Park is responsible for around 29% of this value, which makes it an important refuge for conservation of social wasps from Cerrado, as well as Mato Grosso state, due to its large number of restricted occurrence and endemic species. Nonetheless, there are Brazilian states and conservation units still lacking information for the taxon, making a bigger sampling effort in the Cerrado biome necessary, as it has been rapidly deteriorating due to human action.


2020 ◽  
Vol 19 (9) ◽  
pp. 1550-1613
Author(s):  
O.E. Akimova ◽  
S.K. Volkov ◽  
E.A. Gladkaya ◽  
I.M. Kuzlaeva

Subject. The article discusses the sustainability of regional economy development, its definition, and the substance of sustainable development. Objectives. We aim at performing a comprehensive analysis of indicators of sustainability and adaptability of regional development in the context of digitalization, formulating a strategy for economic behavior that takes into account the multidimensional nature of regional inequality and is focused on boosting the economic potential of regions. Methods. The study draws on dialectic and systems approaches, general scientific methods of retrospective, situational, economic and statistical, and comparative analysis. Results. The sustainability of the region focuses on improving the human welfare over long time horizon. This happens in three areas, i.e. maximizing the efficiency of resource use; ensuring justice and democracy; minimizing resource consumption and environmental damage. The stability of the region can be assessed by using one parameter, or by combining the parameters in accordance with the type of region and expected results. Conclusions. The adaptation of a region to changing conditions depends on its type (‘adapted’, ‘adaptive’, and ‘non-adapted’). Regional inequality has two main components: difference in economic potential and social satisfaction of residents. Another component, affecting the stability and adaptability of regions, is the level of their digitalization. However, some regions have only formally embarked on the path of digitalization. Moreover, a focus on smart technologies, solutions and digitalization often leads to ignoring the goals of sustainable development. Smart technologies should be aimed at ensuring sustainability within the framework of the smart sustainable city concept.


Author(s):  
David O. Carpenter

The world economy has been growing by an average of 3.5% a year. Continued global development is sustainable if overall social assets remain constant or rise over time, including manufactured, human, and environmental capital. Sustainable development requires that society not decrease its overall assets. But unregulated global trade may result in long-term loss of environmental capital. Multilateral governance is needed. Classical business models tend to view environmental damage as an externality—an impact on a third party's welfare that is neither compensated nor appropriated. The Rio Declaration on Environment and Development clearly states that economic development must err on the side of environmental integrity. Whereas UN Environmental Program policy requires precaution in the face of scientific uncertainty, World Trade Organization policy requires scientific certainty before precaution can be used. The conflict is obvious. In fact, there is gross lack of policy coordination across institutions. This article looks at some environmental strains and concludes that trade policy must address all aspects of human welfare, not merely the economic.


2019 ◽  
Vol 25 (1) ◽  
Author(s):  
Lúcio Flávio Freire Lima ◽  
Lúcio Flávio Freire Lima

In this work, we carried out an inventory of social wasps (Hymenoptera, Polistinae) from remnants of Caatinga and Atlantic Forest from the central-south region of the state of Bahia. Nest sampling was carried out in the period from March 2010 to June 2011, using the method of active search. We obtained 90 nests and identified 22 species, three subspecies and one morphospecies of social wasp belonging to ten genera and eight subgenera. Five species were recorded for the first time in the state of Bahia, and the genus Polybia was the most frequent one, with seven identified species. The obtained results confirmed the diversity of the Atlantic Forest, and point to a rich fauna of social wasps in the Caatinga.


1979 ◽  
Vol 11 (1) ◽  
pp. 57-59 ◽  
Author(s):  
Ben L. Perry

West is to be commended for (1) the organization of his discussion, (2) the careful delineation of the research areas, (3) the thoroughness of his research and the excellent documentation of the research efforts of social scientists in treating the problem/s of the small-farm operator, and (4) the development of a means-end schema of “what is,” “what ought to be” with implications for future research, programs, and public policy.As West indicates, there is need for a redefinition of small farm. The $20,000 gross sales limit is inadequate. Most definitions do not include the value added of products produced and consumed by the family. Some states, for example Florida, use figures much lower than $20,000 to characterize small farms. The distinction between full-time and part-time farmers and their incomes is not clearly delineated. A national concern should be the redefinition of the term, “small farm.” Heterogeneous characteristics of small farms should not inhibit the generation of profile information by geographic regions.


2008 ◽  
Author(s):  
Margo Hayes

There are more small farms in Australia than there are large, and this trend continues as an increasing number of larger farms are subdivided into smaller parcels. A growing demand for lifestyle blocks, in Australia and overseas, is fuelling an interest in the quieter, smaller breeds of cattle which have particular appeal as they are more manageable to control and maintain. Small Cattle for Small Farms is ideal for those people considering buying a small farm for lifestyle or commercial purposes. Written in response to the many questions the author was asked by those seeking to purchase small cattle, this practical and easy to understand guide provides an excellent introduction to small farming. The book assumes no prior experience with cattle, and covers all the basics to help you set up your small farm, including: types of cattle available, how to select your stock and care for them, stocking rates, fencing needs, vaccination requirements, methods of identification, and government requirements for land and stockowners. For those wishing to show their cattle, there is a chapter explaining how to prepare for competitions. A section on marketing details how to make a successful entry into the commercial beef industry, and a list of cattle organisations directs readers to more specific information for their chosen breeds.


1980 ◽  
Vol 12 (2) ◽  
pp. 77-85 ◽  
Author(s):  
Luther Tweeten ◽  
G. Bradley Cilley ◽  
Isaac Popoola

The trend toward larger and fewer farms has alarmed many persons who view the small farm as an integral part of American society. Advocates of the small farm have called for policies to halt the continuing decline in the number of small farms in the United States. In evaluating the merits of potential policies, understanding the composition of small farms in the U.S. is critical.Appropriate public policy would be very different if small farms were operated solely by households with substantial off-farm income and who need no public assistance, solely by households pursuing an alternative to urban-industrial society's lifestyle and who want no public assistance, or solely by households who are aged and disabled and who want and need public assistance to avoid absolute deprivation.


1983 ◽  
Vol 19 (4) ◽  
pp. 341-347 ◽  
Author(s):  
R. Vernon ◽  
J. M. H. Parker

SUMMARYTwo sets of experiments examined the effects of weeds on maize yields using weeding methods typical of small farms in Zambia where oxen are used for cultivation. Maize yield losses of 30% due to weeds were evident with common weeding practices. A critical period of competition, during which the crop should be kept clean, was demonstrated from 10 to 30 days after emergence. This is a period of peak labour demand and the prospect of using chemical weed control to ease the situation is considered. The value of weed competition data, given its variability between sites, is discussed.


Sociobiology ◽  
2015 ◽  
Vol 62 (3) ◽  
pp. 439 ◽  
Author(s):  
Gabriel De Castro Jacques ◽  
Marcos Magalhães Souza ◽  
Heslander Júnio Coelho ◽  
Lucas Oliveira Vicente ◽  
Luis Claudio Paterno Silveira

Studies on the diversity of social wasps in agricultural environments represent an important step to identifying the ideal species to be used in biological pest control programs. There is a growing effort to acknowledge the diversity of such Hymenoptera in the state of Minas Gerais, but information on anthropized environments is still rare. The objective of this study was to obtain data on the diversity of social wasps in the Instituto Federal de Educação, Ciências e Tecnologia de Minas Gerais (IFMG), Bambuí campus, Minas Gerais, Brazil. Sampling was conducted from July 2012 to July 2014 with two methodologies: attractive traps and active search. This work confirms that a well diversified environment, even if anthropized, is rich in social wasp species. In addition, the great number of collected species, shows the importance of a long-term survey and the use of more than one method of collection. The high rate of collections of Polistes versicolor in a predominantly agricultural environment, coupled with other studies on this species as a predator of lepidopteran caterpillars, suggests the use of this species as a tool in the biological control of pests.


Sociobiology ◽  
2017 ◽  
Vol 64 (2) ◽  
pp. 225
Author(s):  
Christopher K Starr

The social wasp Polybia quadricincta is observed preying opportunistically on workers of the termite Nasutitermes corniger in Trinidad, West Indies.  Several Polybia spp. and other social wasps are known to prey on winged reproductive, but this appears to be the first report of any preying on workers.


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