Agrobiodiversity: from Definition to Application

Total Page:16

File Type:pdf, Size:1020Kb

Agrobiodiversity: from Definition to Application Agrobiodiversity: from definition to application Filipa Monteiro [email protected]/[email protected] cE3c, Faculty of Sciences, University of Lisbon LEAF, School of Agriculture, University of Lisbon TRAINING COURSE: USE OF AGROBIODIVERSITY INFORMATION 28, 29 AND 30 JUNE '17 IN GBIF AND OTHER DATABASES Outline The importance of AgroBiodiversity Components of Agrobiodiversity Prominence of traits incorporated in species consumed/produced Safeguarding Biological diversity Agrobiodiversity utilization and conservation: socioeconomic considerations TRAINING COURSE: USE OF AGROBIODIVERSITY INFORMATION 28, 29 AND 30 JUNE '17 IN GBIF AND OTHER DATABASES Why is Agricultural Biodiversity Important? Biodiversity and agriculture are strongly interdependent Biodiversity Agriculture Origin of all species of crops and domesticated livestock and the variety within them. It is also the foundation of ecosystem services essential to sustain agriculture and human well-being. Today's crop and livestock biodiversity are the result of many thousands years of human intervention. Biodiversity and agriculture are strongly interrelated because while biodiversity is critical for agriculture, agriculture can also contribute to conservation and sustainable use of biodiversity. Sustainable agriculture both promotes and is enhanced by biodiversity. Biodiversity is essential to: - ensure the production of food, fibre, fuel, fodder; - maintain other ecosystem services; - allow adaptation to changing conditions - including climate change - sustain rural peoples' livelihoods . TRAINING COURSE: USE OF AGROBIODIVERSITY INFORMATION 28, 29 AND 30 JUNE '17 IN GBIF AND OTHER DATABASES What is Agrobiodiversity? Agricultural biodiversity includes all components of biological diversity of relevance to food and agriculture, and all components of biological diversity that constitute the agricultural ecosystems: the variety and variability of animals, plants and micro-organisms, at the genetic, species and ecosystem levels, which are necessary to sustain key functions of the agroecosystem. Agrobiodiversity is the outcome of the interactions among genetic resources, the environment and the management systems and practices used by farmers and herders. It has developed over millennia, as a result of both natural selection and human interventions.. Published by: Understanding agrobiodiversity At a time when a growing world population needs to be fed What is agrobiodiversity? on limited resources in a changing climate, the conserva- tion and sustainable use of agricultural biological diversity Agricultural biodiversity includes all components of bio- gains utmost importance. Agrobiodiversity plays a crucial logical diversity of relevance to food and agriculture, and all role in food security and nutrition, as well as in the provision components of biological diversity that constitute the agri- of environmental services and livelihoods. It is critical to the cultural ecosystems: the variety and variability of animals, sustainability, resilience and adaptability of agricultural pro- plants and micro-organisms, at the genetic, species and eco- duction systems. To promote awareness and share knowledge system levels, which are necessary to sustain key functions on conservation and the sustainable use of agrobiodiversity, of the agro-ecosystem. Agrobiodiversity is the outcome of the Deutsche Gesellschaft für Internationale Zusammenarbeit the interactions among genetic resources, the environment (GIZ) GmbH, on behalf of the German Federal Ministry for and the management systems and practices used by farmers Economic Cooperation and Development (BMZ), has published and herders. It has developed over millennia, as a result of this series of agrobiodiversity factsheets. both natural selection and human interventions. The present factsheet presents the basics of agrobiodiversity – what it is, why it is important, what causes it to diminish and These constitute the main units of production in agri- why this is happening so rapidly, how it can be developed, and culture, and include cultivated and domesticated species, its relation to traditional knowledge and local innovations. It managed wild plants and animals, as well as wild relatives also covers gender issues, the global and national governance of cultivated and domesticated species. of agrobiodiversity, in situ and ex situ conservation methods, 2. Components of biodiversity that support ecosystem and, finally, options for action for conservation and sustain- services upon which agriculture is based (Note: Ecosystem able use of agrobiodiversity in development cooperation. services are processes by which the environment produces benefits useful to people). These include a diverse range According to the Convention of Biodiversity (CBD), agrobiodi- of organisms that contribute to nutrient cycling, pest and versity is comprised of four dimensions: disease regulation, pollination, pollution and sediment regulation, maintenance of the hydrological cycle, erosion 1. Genetic resources for food and agriculture: control, carbon sequestration and climate regulation. TRAINING COURSE:Plant USE geneticOF AGROBIODIVERSITY resources, including INFORMATION crops, wild plants 3. Abiotic factors, such as local climatic and chemical28, 29 AND factors 30 JUNE '17 IN GBIF AND OTHERharvested DATABASES and managed for food, trees on farms, pas- and the physical structure and functioning of ecosystems, ture and rangeland species. which have a determining effect on agrobiodiversity. Animal genetic resources, including domesticated 4. Socio-economic and cultural factors. Agrobiodiversity animals, wild animals hunted for food, wild and farmed is largely shaped and maintained by human activities Componentsfish and other aquatic organisms. of Agrobiodiversity and management practices, and a large number of people Microbial and fungal genetic resources. depend on agrobiodiversity for sustainable livelihoods. Agrobiodiversity is an important part of biodiversity • Agro-ecosystems • Crop species and varieties Biodiversity • Livestock species and breeds • Plant/animal germplasm • Soil organisms in cultivated areas • Biocontrol agents for crop/livestock pests • Wild relatives of crop and livestock species • Traditional knowledge on agrobiodiversity Agrobiodiversity Adapted from: FAO, 2005 Functional Agrobiodiversity Functional agrobiodiversity (FAB) refers to ‘those elements of biodiversity on the scale of agricultural fields or landscapes, which provide ecosystem services that support sustainable agricultural production and can also deliver benefits to the regional and global environment and the public at large’. TRAINING COURSE: USE OF AGROBIODIVERSITY INFORMATION 28, 29 AND 30 JUNE '17 IN GBIF AND OTHER DATABASES The Convention on Biological Diversity was inspired by the world community's growing commitment to sustainable development. It represents the conservation of biological diversity, the sustainable use of its components, and sharing of benefits arising from the use of genetic resources. According to CBD, agrobiodiversity is comprised of four dimensions TRAINING COURSE: USE OF AGROBIODIVERSITY INFORMATION 28, 29 AND 30 JUNE '17 IN GBIF AND OTHER DATABASES Components of Agrobiodiversity 1. Genetic resources for food and agriculture: PLANT Plant genetic resources, including crops, wild plants harvested and managed for food, trees on farms, pasture and rangeland species The International Treaty on Plant Genetic Resources for Food and Agriculture- 2001 The Treaty aims at: 1. recognizing the enormous contribution of farmers to the diversity of crops that feed the world; 2. establishing a global system to provide farmers, plant breeders and scientists with access to plant genetic materials; 3. ensuring that recipients share benefits they derive from the use of these genetic materials with the countries where they have been originated. The Treaty facilitates access to the genetic materials of the 64 crops in the Multilateral System for research, breeding and training for food and agriculture. TRAINING COURSE: USE OF AGROBIODIVERSITY INFORMATION 28, 29 AND 30 JUNE '17 IN GBIF AND OTHER DATABASES Components of Agrobiodiversity 1. Genetic resources for food and agriculture: ANIMAL Animal genetic resources (AnGR) is used to include all animal species, breeds and strains that are of economic, scientific and cultural interest to humankind in terms of food and agricultural production for the present or the future. Another equivalent term increasingly used is farm animal genetic resources. More than 40 species of animals that have been domesticated (or semi-domesticated) during the past 10 to 12 thousand years which contribute directly (through animal products used for food and fibre) and indirectly (through functions and products such as draft power, manure, transport, store of wealth etc.) Source: http://agtr.ilri.cgiar.org/index.php?option=com_content&view=article&id=240&Itemid=298 TRAINING COURSE: USE OF AGROBIODIVERSITY INFORMATION 28, 29 AND 30 JUNE '17 IN GBIF AND OTHER DATABASES Components of Agrobiodiversity 1. Genetic resources for food and agriculture: MICROBIAL and FUNGI Microorganisms include all living organisms other than plants and animals and are mostly microscopic cellular organisms that include bacteria, mycoplasmas, protozoa, fungi and some algae. Lack of information of microorganism diversity combined to lack of research programs related to their role in ecosystem functions. It is difficult to detect early changes in ecosystems without
Recommended publications
  • Companion Planting and Insect Pest Control
    Chapter 1 Companion Planting and Insect Pest Control Joyce E. Parker, William E. Snyder, George C. Hamilton and Cesar Rodriguez‐Saona Additional information is available at the end of the chapter http://dx.doi.org/10.5772/55044 1. Introduction There is growing public concern about pesticides’ non-target effects on humans and other organisms, and many pests have evolved resistance to some of the most commonly-used pesticides. Together, these factors have led to increasing interest in non-chemical, ecologically- sound ways to manage pests [1]. One pest-management alternative is the diversification of agricultural fields by establishing “polycultures” that include one or more different crop varieties or species within the same field, to more-closely match the higher species richness typical of natural systems [2, 3]. After all, destructive, explosive herbivore outbreaks typical of agricultural monocultures are rarely seen in highly-diverse unmanaged communities. There are several reasons that diverse plantings might experience fewer pest problems. First, it can be more difficult for specialized herbivores to “find” their host plant against a back‐ ground of one or more non-host species [4]. Second, diverse plantings may provide a broader base of resources for natural enemies to exploit, both in terms of non-pest prey species and resources such as pollen and nectar provided by the plant themselves, building natural enemy communities and strengthening their impacts on pests [4]. Both host-hiding and encourage‐ ment of natural enemies have the potential to depress pest populations, reducing the need for pesticide applications and increasing crop yields [5, 6]. On the other hand, crop diversification can present management and economic challenges for farmers, making these schemes difficult to implement.
    [Show full text]
  • Tibor Bukovinszky TAILORING COMPLEXITY Multitrophic
    TAILORING COMPLEXITY Multitrophic interactions in simple and diversified habitats Promotoren: Prof. Dr. J.C. van Lenteren Hoogleraar in de Entomologie Prof. Dr. L.E.M. Vet Hoogleraar in de Evolutionaire Ecologie Promotiecomissie: Prof. Dr. H.C.J. Godfray NERC, Imperial College at Silwood Park, Ascot, UK Prof. Dr. Ir. W.H. van der Putten Nederlands Instituut voor Ecologie, Heteren Prof. Dr. M. J. Kropff Wageningen Universiteit Prof. Dr. M. Dicke Wageningen Universiteit Dit onderzoek is uitgevoerd binnen de onderzoekschool Production Ecology and Resource Conservation. Tibor Bukovinszky TAILORING COMPLEXITY Multitrophic interactions in simple and diversified habitats Proefschrift ter verkrijging van de graad van doctor op gezag van de rector magnificus van Wageningen Universiteit, Prof. Dr. Ir. L. Speelman, in het openbaar te verdedigen op maandag 28 juni 2004 des namiddags te 13.30 uur in de Aula Bukovinszky, Tibor (2004) Tailoring complexity Multitrophic interactions in simple and diversified habitats Thesis Wageningen University - with references with summary in Dutch ISBN: 90-8504-049-3 Contents Abstract CHAPTER 1 General Introduction - Cross-scale management of functional diversity for 3 sustainable pest control in agro-ecosystems T. Bukovinszky CHAPTER 2 Influence of intercropping Brussels sprout with malting barley on 21 abundance of insect herbivores and natural enemies T. Bukovinszky, H. Tréfás, J. Twardowski, J.C. van Lenteren and L.E.M. Vet CHAPTER 3 Plant competition in pest-suppressive intercropping systems 37 complicates evaluation of herbivore responses T. Bukovinszky, H. Tréfás, J.C. van Lenteren, L.E.M. Vet and J. Fremont CHAPTER 4 The role of foraging behaviour in the spatial dynamics of herbivores in 53 heterogeneous habitats T.
    [Show full text]
  • Reproductive Biology of Diadegma Semiclausum Hellen (Hymenoptera: Ichneumonidae)
    Copyright is owned by the Author of the thesis. Permission is given for a copy to be downloaded by an individual for the purpose of research and private study only. The thesis may not be reproduced elsewhere without the permission of the Author. Reproductive biology of Diadegma semiclausum Hellen (Hymenoptera: Ichneumonidae) A thesis submitted in partial fulfilment of the requirements for the degree of Master of Science (MSc) in Plant Protection at Massey University Palmerston North, New Zealand Diwas Khatri 2011 Abstract The ichneumonid Diadegma semiclausum Hellen has been recorded in many parts of the world as an important parasitoid of diamondback moth, Plutella xylostella (Linnaeus), a serious pest of brassica vegetable crops worldwide. Some aspects of reproductive biology were studied in controlled laboratory conditions of 21±1°C, 16:8 h (light:dark) and 50-60% RH. Diadegma semiclausum adults emerge only during the photophase. It has a protandrous emergence pattern because the male developmental time is shorter than the female. Most males emerge in the first half of the photophase whereas females emerge during the second half. Both males and females become sexually mature in <12 h after emergence. When paired with 3-d-old virgin mates, more newly emerged females (<12-h-old) mate, compared to newly emerged males. Females, immediately after eclosion (<1-h-old), do not carry mature eggs in their ovaries, and hence this is a strong synovigenic species. Maternal age affects the egg load, which reaches the maximum by 8 d after emergence. Egg resorption occurs in host deprived females and the number of mature eggs declines with age when >20 d.
    [Show full text]
  • Program and Contributions of the Colloquium As View-PDF
    Food and Nutrition Security of the World: The Role of Biotechnology Honoring the 80th Anniversary of Ehrensenator Dr. Dr. h.c. Hermann Eiselen 2006 Herausgeber: Kompetenzzentrum Pflanzenzüchtung Universität Hohenheim 70599 Stuttgart Redaktion: Gerd Weber e-mail: [email protected] Food and Nutrition Security of the World: The Role of Biotechnology Honoring the 80th Anniversary of Ehrensenator Dr. Dr. h.c. Hermann Eiselen May 10-11, 2006 Program 10.05.2006 Aula (Schloss-Mittelbau) Opening Remarks Chair: Prof. Dr. Gerd Weber 13:00 Prof. Dr. Hans-Peter Liebig, Rektor, Universität Hohenheim Prof. Dr. Peter Frankenberg, Minister für Wissenschaft, Forschung und Kunst, Baden-Württemberg Scientific Presentations Introduction to the Program Gerd Weber, (convener) Kompetenzzentrum Pflanzenzüchtung, Forschungs- schwerpunkt Biotechnologie u. Pflanzenzüchtung, Universität Hohenheim 14:00 - 14:35 Biotechnology to fight hunger-vision or reality? Wilhelm Gruissem, ETH Zürich, Switzerland 14:35 - 15:10 The Hohenheim Research Center of Biotechnology and Plant Breeding: Highlights from two decades (1985 – 2005) Hartwig H. Geiger, Universität Hohenheim, Germany 15:10 - 15:45 Molecular approaches for improving water-stress tolerance of cereals and legumes in the semi-arid tropics David Hoisington, ICRISAT, India 15:45 - 16:15 Coffee Break Chair: Albrecht E. Melchinger 16:15 -16:50 New genetic variation for wheat improvement in developing countries Susanne Dreisigacker, CIMMYT, Mexico 16:50 - 17:25 Stress tolerant maize making a difference to African farmers Marianne Bänziger, CIMMYT, Kenya 17:25 - 18:00 Can biotechnology straighten the bent future of bananas? Laszlo Sagi, Katholieke Universiteit Leuven, Belgium Balkonsaal / Grosses Foyer (Schloss-Mittelbau) 19:00 Opening of the buffet Prof.
    [Show full text]
  • Multitrophic Interactions on a Range-Expanding Plant Species
    Multitrophic interactions on a range-expanding plant species Taiadjana Filipa Marques Fortuna Thesis committee Promotors Prof. Dr Louise E. M. Vet Professor of Evolutionary Ecology Wageningen University Prof. Dr Jeffrey A. Harvey Professor of Nature Conservation and Environmental Advocacy VU University Amsterdam Other members: Prof. Dr Harro J. Bouwmeester, Wageningen University Dr Tom de Jong, Leiden University Dr Jacqui Shykoff, Paris-Sud XI University, France Prof. Dr Nicole M. van Dam, Radboud University, Nijmegen This research was conducted under the auspices of the Graduate School of Production Ecology and Resource Conservation (PE&RC) Multitrophic interactions on a range-expanding plant species Taiadjana Filipa Marques Fortuna Thesis submitted in fulfilment of the requirements for the degree of doctor at Wageningen University by the authority of the Rector Magnificus Prof. Dr M.J. Kropff, in the presence of the Thesis Committee appointed by the Academic Board to be defended in public on Tuesday 19 November 2013 at 11a.m. in the Aula. Taiadjana Filipa Marques Fortuna Multitrophic interactions on a range-expanding plant species, 229 pages PhD thesis, Wageningen University, Wageningen, NL (2013) With references, with summaries in English, Dutch and Portuguese ISBN 978-94-6173-765-6 The path of a PhD is like an insect metamorphosis. A young caterpillar emerged from the egg of knowledge passes through several phases in the quest for results, reaches a pupal phase while writing and writing and writing And in the end, it emerges as a butterfly with wings to fly.. (Taia 2013) À minha mãe, guerreira e sonhadora.. Abstract Studies on the ecological impacts of exotic invasive plants have mainly focused on inter- continental invasions.
    [Show full text]
  • Diamondback Moth in the Philippines and Its Control with Diadegma
    30 Diamondback Moth in the Philippines and its Control with Diadegma semiclausum Andreas Poelking Philippine-German Biological Plant Protection Project, Manila, Deutsche Gesellschaft fuer Technische Zusammenarbeit (GTZ), Federal Biological Research Centre for Agriculture and Forestry, Messeweg 11/12, D-3300 Braunschweig, Germany Abstract Diamondback moth, Plutella xylostella (L.), is the most destructive pest of crucifer crops in the Philippines. Life cycle, population dynamics and biological control with the larval parasitoid Diadegma semiclausum have been studied (1988-90)in the mountains of Northern Luzon. One generation of the diamondback moth requires 24.7 days, therefore about 15 generations of the pest may occur during 1 year. The average life expectancy of the females is 16.7 days, during which an average of 233 eggs (maximum 639) are deposited. The continuous monitoring of the diamondback moth field population with light and pheromone traps proved that during the rainy season (June- October) only 5-10 moths/week were found; during population peaks (January and February) almost 3000 moths/week were found. Only one natural enemy - Cotesia plutellae (Kurdjumov) has a certain importance in controlling the pest. The parasitism reaches 70% but its efficacy is reduced by hyperparasitism to 80% by a group of six hymenopterans. Starting in March 1989 D. semiclausum was imported from Taiwan. The performance of D. semiclausum was evaluated in field experiments with screen- covered cabbage plots. The parasitism reached 95%, and in two of three experiments the yield of cabbage was significantly higher than in the control. In an open-field experiment the parasitoid was established with rates of parasitism from 12 to 15% increasing to 64% at harvest time.
    [Show full text]
  • Forest Health Technology Enterprise Team
    Forest Health Technology Enterprise Team TECHNOLOGY TRANSFER Biological Control September 12-16, 2005 Mark S. Hoddle, Compiler University of California, Riverside U.S.A. Forest Health Technology Enterprise Team—Morgantown, West Virginia United States Forest FHTET-2005-08 Department of Service September 2005 Agriculture Volume I Papers were submitted in an electronic format, and were edited to achieve a uniform format and typeface. Each contributor is responsible for the accuracy and content of his or her own paper. Statements of the contributors from outside of the U.S. Department of Agriculture may not necessarily reflect the policy of the Department. The use of trade, firm, or corporation names in this publication is for the information and convenience of the reader. Such use does not constitute an official endorsement or approval by the U.S. Department of Agriculture of any product or service to the exclusion of others that may be suitable. Any references to pesticides appearing in these papers does not constitute endorsement or recommendation of them by the conference sponsors, nor does it imply that uses discussed have been registered. Use of most pesticides is regulated by state and federal laws. Applicable regulations must be obtained from the appropriate regulatory agency prior to their use. CAUTION: Pesticides can be injurious to humans, domestic animals, desirable plants, and fish and other wildlife if they are not handled and applied properly. Use all pesticides selectively and carefully. Follow recommended practices given on the label for use and disposal of pesticides and pesticide containers. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, sexual orientation, or marital or family status.
    [Show full text]
  • Hymenopterous Parasitoids Associated with Diamondback Moth
    25 Hymenopterous Parasitoids Associated with Diamondback Moth: the Taxonomic Dilemma Mike Fitton and Annette Walker¹ Natural History Museum, London and 'International Institute of Entomology, London, SW7 5BD, England Abstract Attempts to control diamondback moth Plutella xylostella (L.) using insect parasitoids have not been entirely successful. Parasitoids which have been utilized include Diadegma species and Cotesia plutellae. A better understanding of the systematics of these Hymenoptera could lead to their more effective exploitation in biological control. Diadegma is a very large and difficult genus of lchneumonidae. There are no completely satisfactory taxonomic treatments, and from the limited work that has been done we know that some distinct biological species are almost impossible to separate using traditional, morphological characters. Nine putative species of Diadegma attack diamondback moth. So far no studies have adequately considered the taxonomic questions which are important in relation to their parasitism of this widespread pest. The microgastrine braconid Cotesia plutellae has been used with limited success in controlling diamondback moth, but recent field studies have raised suspicions that it is a complex of two or more species. We present a review of our knowledge of Diadegma and Cotesia and other microgastrines associated with diamondback moth, and attempt to outline a strategy for solving the taxonomic problems, leading to a better understanding of relationships with this host. The other parasitoids which we consider reliably recorded from diamondback moth are also noted. Introduction This paper concentrates on Diadegma and Cotesia, but briefly touches on other hymenopterous parasitoids of diamondback moth (DBM), Plutella xylostella (L.) (Lepidoptera; Yponomeutidae). In each of these three sections, the current taxonomic situation, related questions of biology, and strategies for the future are considered.
    [Show full text]
  • Seasonal Occurrence and Abundance of Diamondback Moth, Plutella Xylostella
    R.to'ott SEASONAL OCCURRBNCE AND ABUNDANCE OF DIAMONDBACK MOTH, ?LUTELIA, XYLOSTELLA (L.), AND ITS MAJOR PARASITOIDS ON BRASSICACEOUS PLANTS IN SOUTH AUSTRALIA by BIJAN HATAMI Thesis submitted for the degree of DOCTOR OF PHILOSOPHY The University of Adelaide Department of Crop Protection Faculty of Agricultural and Natural Resources October 1996 To my late brother Siavash Hatami For his spiritual inspiration and support ll TABLE OF CONTENTS Page LIST OF FIGURES vl LIST OF TABLES x SUMMARY xii DECLARATION xv ACKNOWLEDGMENTS xvi LIST OF PUBLICATIONS xviii ABBREVIATIONS xix CHAPTER 1 Introduction. 1 CHAPTER 2. Literature review 4 2.1. The pest species Plutella ryIostella (L.) 4 2.2. Parasitoids of diamondback moth. t4 2.3. Measurement of parasitism. 19 2.4. Management of diamondback moth 23 CHAPTER 3. Assessment of parasitism in the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae). 25 3.1. Introduction. 25 3.2. Materials and methods. 26 3.3. Results. 34 3.4. Discussion 46 llt CHAPTER 4 Seasonal occulrence of Plutella ryIostella (Lepidoptera: Plutellidae) and its parasitoids on brassicaceous weeds in the Adelaide region. 58 4.1. Introduction. 58 4.2. Materials and methods 59 4.3. Results. 62 4.4. Discussion. 67 CHAPTER 5 Adult activity of the diamondback moth in the Adelaide 73 regron. 5.1. Introduction. 73 5.2. Materials and methods 74 5.3. Results. 77 5.4. Discussion 80 CHAPTER 6. Parasitism by Diadegma semiclausum: effects of diamondback moth larval instars. 84 6.t. Introduction. 84 6.2. Materials and methods. 85 6.3. Results. 87 6.4. Discussion 88 CHAPTER 7.
    [Show full text]
  • Diadegma Species (285)
    Pacific Pests, Pathogens and Weeds - Online edition Diadegma species (285) Common Name Parasitic wasp Scientific Name Diadegma semiclausum, an ichneumonid (previously known as Diadegma euerophaga, Diadegma xylostellae, Angita cerophaga). The wasps belong to the family Ichneumonidae. Distribution Diadegma semiclausum is native to Europe, but has been introduced into many countries in Photo 1. Diadegma seeking its host. Asia, Africa, Oceania. It is established in Australia and New Zealand, but it has not established in other Pacific islands except Papua New Guinea where it is established in the highlands. The wasp has also been introduced into the highlands of India, Indonesia, Laos, Malaysia, the Philippines, Taiwan, Thailand, and Vietnam. In tropical countries, it does not survive below about 800 m. Prey Diamondback moth, Plutella xylostella. Description & Life Cycle Photo 2. Diadegma has located a second stage Diadegma is most commonly found parasitising diamondback moth, although it has been diamondback moth caterpillar. reared from other species. It is a larval parasitoid, preferring to lay its eggs in small larvae, those that have just left their egg masses on Brassica leaves. When the wasp approaches (Photos 1&2), the moth larvae may react with jerky movements, or drop from the leaf on silken threads to escape attack. Those that remain become the target of the wasp which quickly inserts a single egg into each larva (Photos 3&4). The larvae are parasitised once only as the wasp can tell if the diamondback moth larvae have already been attacked. Parasitised moth larvae develop normally, and outwardly look the same as those that are Photo 3.
    [Show full text]
  • Biology of the Diamondback Moth (Plutella Xylostella) and Its Future Impact in Swedish Oilseed Rape Production – a Literature Review
    Department of Ecology Biology of the Diamondback moth (Plutella xylostella) and its future impact in Swedish oilseed rape production – a literature review Kålmalens biologi och dess framtida inverkan på svensk oljeväxtproduktion – en litteratursammanställning Joakim Hermansson Agriculture Programme – Soil/Plant Bachelor’s thesis Uppsala 2016 Independent project/Degree project / SLU, Department of Ecology 2016:15 Biology of the Diamondback moth, (Plutella xylostella) and its future impact in Swedish oilseed rape production – a literature review Kålmalens biologi och dess framtida inverkan på svensk oljeväxtproduktion – en litteratursammanställning Joakim Hermansson Supervisor: Barbara Ekbom, Swedish University of Agricultural Sciences, Department of Ecology Examiner: Riccardo Bommarco, Swedish University of Agricultural Sciences, Department of Ecology Credits: 15 hec Level: G2E Course title: Independent project in biology – bachelor project Course code: EX0689 Programme/education: Agriculture Programme – Soil/Plant Place of publication: Uppsala Year of publication: 2016 Cover picture: Joakim Hermansson Title of series: Independent project/Degree project / SLU, Department of Ecology Part of: 2016:15 Online publication: http://stud.epsilon.slu.se Keywords: Diamondback moth, Plutella xylostella, overwintering, climate, canola, oilseed rape, cosmopolitan pest, resistance, Brassica napus Sveriges lantbruksuniversitet Swedish University of Agricultural Sciences Faculty of Natural Resources and Agricultural Sciences, Department of Ecology Table
    [Show full text]
  • Hymenoptera: Braconidae) on Plutella Xylostella (L.) (Lepidoptera: Plutellidae)
    International Journal of Agricultural Technology 2019 Vol. 15(4): 557-566 Available online http://www.ijat-aatsea.com ISSN 2630-0192 (Online) Effects of honey and flower on the longevity and parasitization of Cotesia vestalis Haliday (Hymenoptera: Braconidae) on Plutella xylostella (L.) (Lepidoptera: Plutellidae) Chau, N. N. B.1*, Kieu, N. T. P.2 and Dung, N. V. T.2 1Department of Agricultural Biotechnology, Faculty of Biotechnology, Ho Chi Minh City Open University, Vietnam; 2Department of Plant Protection, Faculty of Agronomy, Nong Lam University, Vietnam. Chau, N. N. B., Kieu, N. T. P. and Dung, N. V. T. (2019). Effects of honey and flower on the longevity and parasitization of Cotesia vestalis Haliday (Hymenoptera: Braconidae) on Plutella xylostella (L.) (Lepidoptera: Plutellidae). International Journal of Agricultural Technology 15(4): 557-566. Abstract Potential effects of honey and yellow cosmos (Cosmos sulphureus) on the longevity and parasitization of Cotesia vestalis were investigated. Results showed that when comparing diets from different honey-diluted solutions to water, 50% honey-diluted solution significantly increased longevity for both male and female parasitoid Cotesia vestalis. Mean longevities of male and female parasitoids were 10.16 ± 0.59 days and 10.8 ± 0.76 days, respectively. Similar results were obtained when using yellow cosmos flower (C. sulphureus), 50% honey-diluted solution, mixed honey and pollen, and honey-pollen to evaluate the longevity of C. vestailis parasitoids. Moreover, honey-pollen treatment significantly increased the parasitism efficiency of C. vestalis on the diamondback moth Plutella xylostella (L.) larvae, which gave the highest mean number of emergent parasitoids per day compared to the control.
    [Show full text]