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Author: Chuan Quing Ruan
Publisher: Cuvillier Verlag
ISBN: 3736931093
Category : Science
Languages : en
Pages : 152
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Book Description
The current research aimed to study biological control of pest thrips Frankliniella occidentalis (PERGANDE) (Thy., Thripidae), Thrips tabaci LINDEMAN (Thy., Thripidae) and Gynaikothrips ficorum (MARCHAL) (Thy., Phlaeothripidae) using predatory bug species: Geocoris ochropterus FABR. (Het., Lygaeidae), Montandoniola moraguesi (PUTON) (Het., Anthocoridae), Orius similis ZHENG (Het., Anthocoridae) and Scipinia subula HSIAO et REN (Het., Reduviidae). Firstly, the biology and prey consumption of the four predatory bug species were experimented at temperature 25oC. In further research, G. ochropterus, which displayed high prey consumption, fecundity and long longevity, was selected to study its biology and prey consumption at temperatures 18 and 30oC. After that, its prey consumption in changing prey offer, the effect of extreme temperatures, its prey preference for prey ages and species, the effect of the different nutritions, as well as its cannibalism and the intraguild predation with O. similis were determined at temperature 25oC. Finally, greenhouse experiments were conducted to confirm the efficiency of G. ochropterus for the biological control of the pest thrips. Under laboratory conditions, the results showed that all the tested predators, except S. subula, were able to complete their life cycles with the three pest thrips species as prey at temperature 25oC. Among them, G. ochropterus was the most superior in terms of prey consumption, fecundity and longevity. Further experiments revealed that G. ochropterus displayed shorter life cycle, lower mortality, higher fecundity and daily prey consumption at temperature 30oC than at 18oC. In addition, G. ochropterus showed the adaptability to changing prey offer. It also developed well with considerably high prey consumption at extremely high constant and changing temperatures (35 and 35/25oC). Under extremely low temperature 3 and 6oC, the adults of G. ochropterus showed high tolerance. Moreover, G. ochropterus could exhibit prey preference for certain life stages of thrips, and clearly preferred pest thrips to the non-thrips prey species. Different nutritions affected the development and survival period of G. ochropterus, with the adult predators living for a considerable period of time on 10% honey emulsion. Its cannibalism and intraguild predation with O. similis occurred in the experiments, and reduced with sufficient prey availability. Under greenhouse conditions, releasing a pair of G. ochropterus adults per plant caused up to 92.1, 85.7, and 83.7% reductions in the populations of F. occidentalis, T. tabaci and G. ficorum, respectively.
Author: Chuan Quing Ruan
Publisher: Cuvillier Verlag
ISBN: 3736931093
Category : Science
Languages : en
Pages : 152
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Book Description
The current research aimed to study biological control of pest thrips Frankliniella occidentalis (PERGANDE) (Thy., Thripidae), Thrips tabaci LINDEMAN (Thy., Thripidae) and Gynaikothrips ficorum (MARCHAL) (Thy., Phlaeothripidae) using predatory bug species: Geocoris ochropterus FABR. (Het., Lygaeidae), Montandoniola moraguesi (PUTON) (Het., Anthocoridae), Orius similis ZHENG (Het., Anthocoridae) and Scipinia subula HSIAO et REN (Het., Reduviidae). Firstly, the biology and prey consumption of the four predatory bug species were experimented at temperature 25oC. In further research, G. ochropterus, which displayed high prey consumption, fecundity and long longevity, was selected to study its biology and prey consumption at temperatures 18 and 30oC. After that, its prey consumption in changing prey offer, the effect of extreme temperatures, its prey preference for prey ages and species, the effect of the different nutritions, as well as its cannibalism and the intraguild predation with O. similis were determined at temperature 25oC. Finally, greenhouse experiments were conducted to confirm the efficiency of G. ochropterus for the biological control of the pest thrips. Under laboratory conditions, the results showed that all the tested predators, except S. subula, were able to complete their life cycles with the three pest thrips species as prey at temperature 25oC. Among them, G. ochropterus was the most superior in terms of prey consumption, fecundity and longevity. Further experiments revealed that G. ochropterus displayed shorter life cycle, lower mortality, higher fecundity and daily prey consumption at temperature 30oC than at 18oC. In addition, G. ochropterus showed the adaptability to changing prey offer. It also developed well with considerably high prey consumption at extremely high constant and changing temperatures (35 and 35/25oC). Under extremely low temperature 3 and 6oC, the adults of G. ochropterus showed high tolerance. Moreover, G. ochropterus could exhibit prey preference for certain life stages of thrips, and clearly preferred pest thrips to the non-thrips prey species. Different nutritions affected the development and survival period of G. ochropterus, with the adult predators living for a considerable period of time on 10% honey emulsion. Its cannibalism and intraguild predation with O. similis occurred in the experiments, and reduced with sufficient prey availability. Under greenhouse conditions, releasing a pair of G. ochropterus adults per plant caused up to 92.1, 85.7, and 83.7% reductions in the populations of F. occidentalis, T. tabaci and G. ficorum, respectively.
Author: Chuan Qing Ruan
Publisher:
ISBN: 9783869551098
Category :
Languages : en
Pages : 136
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Book Description
Author: Manika Gupta
Publisher: Anchor Academic Publishing
ISBN: 396067189X
Category : Science
Languages : en
Pages : 393
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Book Description
India is especially suitable for agricultural products, its vast plains containing alluvial soil with rich natural contents. The major economy of India is based on agricultural products. The green revolution in India brought high hopes for Indian farmers. Several new scientific information helped crop production to grow by leaps and bounds: the more researches, the more intricacies. Further knowledge of pests makes scientists consider several new solutions. The use of chemicals was immediately adopted to decimate the population of pests and, at first, good results were obtained. But later on, harmful effects of the pesticides became known. It was realized later on that the regular use of chemicals in pesticides is extremely dangerous for human health. Generally, chemical pesticides are used to curb the harmful effects of insects and pests. But the immediate gain of this process has an adverse effect on the environment in the long run. Regular use of chemicals leads to insecticide resistance. Then, biodiversity is distributed by pest resurgence and pesticide residues. So, the immediate gain of one generation creates serious problems for the next generation. To sustain agriculture towards its natural mode some new solutions are to be traced. The solution to reduce pesticides is present in the preference for biological management. Predators and parasitoids may be used as natural enemies. In order to gain control over the thrips pests by less harmful means for the agricultural crops, more research work needs to be done. Certain other methods have to be explored in favour of the environment, biodiversity and other useful flora and fauna. We need to maintain the tritrophic interactions in which eating relationships between several species may be traced for biological control.
Author: K. Sahayaraj
Publisher: Daya Books
ISBN: 9788170353409
Category : Nature
Languages : en
Pages : 360
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Book Description
This book presents the pest management by using predatory insects. It elucidates the characteristics features of predatory insects and their utility value in the field of Biological control and integrates them in Integrated Pest Management (IPM). During the last five to six decades voluminous scientific work on various aspects of predatory insects has been done at different Research Institutions and Universities in India. Since the scientific literature lies scattered in various journals, and not yet has been published in book form, it is considered desirable and essential to provide a concise account in a book form. The book entitled Indian Insect Predators in Biological Control is the first of its kind in our country. It has the following distinguished features: (1) Enlighted the distribution and diversity of insect predators in various agroecosystem. (2) Provide updated coverage of ethology, biology and life table parameters of predators. (3) Di and tri tropic interaction of crop-pest-predators. (4) Biological control potential of predators in laboratory, pots, controlled field cage and natural field conditions are elaborated. (5) Biosefty of synthetic and biopesticides are discussed. (6) Mass production with natural, faciated and oligidic diets are explained. (7) Text is illustrated with photographs, line drawings, tables and graphs to make the material more interesting to the students. (8) This book is intended as a text for use in teaching the concept of biological control to undergraduate and post graduate students of biology and agriculture. (9) This also immensely helps the researchers who are engaged in pest management, crop production and protection by using various natural predators. Contents Chapter 1: Insect Predators and Pest Control by K Sahayaraj; Chapter 2: Behavioral and Ecological Features of Mantids that Confer as Prospective Biocontrol Agents by M C Muralirangan, K P Sanjayan & N Senthikumar; Chapter 3: Dragonflies and Damselflies in Biological Control by F K Kakkassery; Chapter 4: Feeding Adaptations and Semiochemical Perception in Predatory Heteroptera by Pathipati Usha Rani; Chapter 5: Anthocorid Predators and their Biocontrol Potential by M Nasser & U C Abdurahiman; Chapter 6: How Efficient are Geocorid Bugs (Heteroptera: Insecta) as Crop Pest Managers? by Ananda Mukhopadhyay & Soma Das; Chapter 7: Reduviids in Biological Control by K Sahayaraj; Chapter 8: Biology and Behaviours of Coccinellid Beetles by T V Sathe; Chapter 9: Mass Production and Biological Control Potential of Coccinellids in India by Jagmohan Singh & K S Brar; Chapter 10: Syrphids: As an Important Predators of Aphids in India by T V Sathe & Sangit Visherad; Chapter 11: Indian Insect Predators on Insect Pests of Rice by K S Behera & A Prakash; Chapter 12: Role of Predators in the Control of Horticultural Crop Pests of India by M Mani & A Krishnamoorthy.
Author: R. Ridgway
Publisher: Springer Science & Business Media
ISBN: 1468428713
Category : Science
Languages : en
Pages : 480
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Book Description
The protection of agricultural crops, forest, and man and his domestic animals from annoyance and damage by various kinds of pests remains a chronic problem. As we endeavor to improve pro duction processes and to develop more effective and acceptable tactics for achieving this protection, we must give high priority to all potentially useful techniques for the control and management of insects. Pest control is recognized as an acceptable and necessary part of modern agriculture. Methods employed vary greatly and tend to reflect compromises involving 3 determining factors: technological capability, economic feasibility, and social acceptability. How ever, these factors are also subject to change with time since each involves value judgments that are based on available information, cost, benefit considerations, the seriousness of the pest problem, and the political climate. Whatever method is chosen, energy resources continue to dwindle under the impact of increasing popu lation, and it is inevitable that greater reliance must be placed upon renewable resources in pest management. One alternative is the use of a pest management method that uses the energy of the pest's own biomass to fuel a self-perpetuating control system. The use of biological control agents for the control of pests has long been an integral part of the pest management strategy in crop production and forestry and in the protection of man and animals. The importance and unique advantages of the method are well recognized; numerous treatises deal with accomplishments and methodologies.
Author: Opender Koul
Publisher: CRC Press
ISBN: 0203302567
Category : Science
Languages : en
Pages : 204
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Book Description
Their natural enemies largely determine the population size and dynamic behavior of many plant-eating insects. Any reduction in enemy number can result in an insect outbreak. Applied biological control is thus one strategy for restoring functional biodiversity in many agroecosystems. Predators and Parasitoids addresses the role of natural enemies i
Author: Daniel Carrillo
Publisher: Springer
ISBN: 3319150421
Category : Science
Languages : en
Pages : 337
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Book Description
The history of biological control of harmful organisms by mites is marked by outstanding achievements with a few premiere natural enemies. Early works concentrated on the use of predatory mites for the control of synanthropic flies, More recently, the focus has been mostly on mites of the family Phytoseiidae for the control of plant feeding mites. This is an important family of acarine predators of plant pest mites, which are effectively used in agriculture worldwide. Besides the vast knowledge in several species in this family, there are as well many opportunities for biological control, represented in an array of organisms and through the improvement of management techniques, which are constantly explored by researchers worldwide. This has resulted in an increasing interest in predatory mite species within the families Stigmaeidae, Ascidae, Laelapidae, Rhodacaroidea, Macrochelidae, Erythraeidae and Cheyletidae, among others. This book will compile important developments with predatory mite species within these families, which are emerging as important tools for integrated pest management. New developments with predatory insects and pathogenic organisms attacking mites will also be a subject of this book. Finally, the potential and gaps in knowledge in biological control of acarine plant pests will be addressed.
Author: Ann E. Hajek
Publisher: Cambridge University Press
ISBN: 9780521653855
Category : Gardening
Languages : en
Pages : 396
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Book Description
Publisher Description
Author: Bruce L. Parker
Publisher: Springer Science & Business Media
ISBN: 1489914099
Category : Science
Languages : en
Pages : 606
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Book Description
Thrips (fhysanoptera) are very small insects, widespread throughout the world with a preponderance of tropical species, many temperate ones, and even a few living in arctic regions. Of the approximately 5,000 species so far identified, only a few hundred are crop pests, causing serious damage or transmitting diseases to growing crops and harvestable produce in most countries. Their fringed wings confer a natural ability to disperse widely, blown by the wind. Their minute size and cryptic behavior make them difficult to detect either in the field or in fresh vegetation transported during international trade of vegetables, fruit and ornamental flowers. Many species have now spread from their original natural habitats and hosts to favorable new environments where they often reproduce rapidly to develop intense damaging infestations that are costly to control. Over the past decade there have been several spectacular examples of this. The western flower thrips has expanded its range from the North American continent to Europe, Australia and South Africa. Thrips palmi has spread from its presumed origin, the island of Sumatra, to the coast of Florida, and threatens to extend its distribution throughout North and South America. Pear thrips, a known orchard pest of Europe and the western United States and Canada has recently become a major defoliator of hardwood trees in Vermont and the neighboring states. Local outbreaks of other species are also becoming problems in field and glasshouse crops as the effectiveness of insecticides against them decline.
Author: Pedro A. Barbosa
Publisher: Elsevier
ISBN: 0080529801
Category : Nature
Languages : en
Pages : 420
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Book Description
This volume is a comprehensive treatment of how the principles of ecology and conservation biology can be used to maximize biological control. Conservation Biological Control presents various means to modify or manipulate the environment to enhance the activities of natural enemies of pests. It establishes a conceptual link between ecology and the agricultural use of agents for biological control, and discusses both theoretical issues as well as practical management concerns. Certain to be interesting to ecologists and entomologists, this volume will also appeal to scientists, faculty, researchers and students interested in pest management, horticulture, plant sciences, and agriculture. - Contains chapters by an international team of leading authorities - Establishes a conceptual link between ecology and the agricultural use of agents for biological control - Discusses both theoretical issues as well as practical management concerns - Provides specific examples of how conservation principles are used to maximize the biological control of pests
