Download or read book A Survey of the Predators and Parasitoids of Aphids in Manitoba with Emphasis on the Interaction Between the Thirteen Spotted Lady Beetle Hippodamia Trecimpunctata L and the Pea Aphid Acyrthosiphon Pisum Harris written by Barbara Alison Batulla and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Survey of the Predators and Parasitoids of Aphids in Manitoba with Emphasis on the Interaction Between the Thirteen Spotted Lady Beetle Hippodamia Trecimpunctata L and the Pea Aphid Acyrthosiphon Pisum Harris written by Barbara Alison Batulla and published by . This book was released on 1983 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Entomological Society of Manitoba written by Entomological Society of Manitoba and published by . This book was released on 1982 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for 1945-1966 consist of papers and minutes; 1967-1979 consist chiefly of minutes, 1980- consist of papers and minutes.
Download or read book Factors Affecting the Numbers of Aphids on Grain Crops in Manitoba with Observations on Aphid Predators and Parasites written by Michael Ronald Malyk and published by . This book was released on 1971 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various biotic and abiotic factors prevented aphids on grain crops from reaching their potential on fields under observation in Manitoba in 1968 and 1969. These included wind, rain, predators, parasites and fungus disease. In some cases wind or rain or a combination of wind and rain with other factors caused population decline before plants ripened. Laboratory studies on the effectiveness of the common lady beetle species found preying on aphids on grain crops in Manitoba revealed that Hippodamia tredecimpunctata tibialis and H. convergens were effective aphid predators. They had a high voracity and fecundity and they developed on all the five main aphid species studied. In field collections, the former made up 52% in 1968 and 62.4% in 1969 of all lady beetle species found, and the latter constituted 43.8% and 14.62%. Surveys of aphid predators and parasites in the field revealed that Coccinellids were the most abundant aphid predaors fo11owed by Syrphids and Chrysopids. The most commonly found primary parasites of aphids on grain crops were Aphelinus mali, Aphidius avenaphis and Lysiphlebus testaceipes. The effectiveness of primary parasites was reduced by the hyperparasites Asaphes fletcheri, Pachyneuron siphonophorae, Charips sp., Lygocerus sp., and Alloxysta sp.
Download or read book The Known Predaceous and Parasitic Enemies of the Pea Aphid Illinoia Pisi Kalt in North America with Special Reference to the Syrphidae written by Charles Lewis Fluke and published by . This book was released on 1928 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology and Ecology of Aphids written by Andreas Vilcinskas and published by CRC Press. This book was released on 2016-02-22 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most people know of aphids as garden pests, infesting the soft green tissues of plants in vast numbers and killing them by sucking out the sap. Indeed, among the 4000 or so known species of aphids about 250 are pests, and in temperate regions several are economically important agricultural pests that damage crops directly during feeding or act as v
Download or read book Aphid Predators written by Graham E. Rotheray and published by Naturalists' Handbooks. This book was released on 2024-06 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aphids and their colonies are excellent arenas in which to observe predators in action. A range of insects come to eat or parasitise the aphids or to drink their honeydew. Hoverflies, lacewings, ladybirds and parasitic wasps are some of the most abundant and powerful natural enemies of aphids.
Download or read book Aphid Predators written by Graham E. Rotheray and published by . This book was released on 1989 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focusses on the behavioural interactions between hoverflies and ladybirds and other insects that eat or parasitise aphids or drink their honeydew. Information and ideas needed to plan simple investigations and practical guidance are given.
Download or read book Mechanisms of Non consumptive Effects of Parasitoid Wasps on Aphid Populations written by Kathryn Suzanne Ingerslew and published by . This book was released on 2016 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Predators are typically evaluated for their potential effectiveness as natural biological control agents by examining traits related to their consumptive relationship with an herbivore. For example, voracious predators with a high prey attack rate or predators that specialize in consuming a particular pest species are considered ideal for biological control. However, there is a growing body of research demonstrating that predators also influence herbivore population size through non-consumptive interactions. Non-consumptive interactions include changes in prey behavior, morphology, or life-history traits in response to the presence of a predator that allow prey to survive a predator encounter but result in declines in prey fitness due to reduced availability of resources or expending energy that would have been otherwise used for growth or reproduction. The existence of non-consumptive effects is significant because it raises the possibility that a non-lethal organism (i.e. non-enemy) in the environment can also contribute to herbivore suppression if an herbivore inaccurately perceives an organism as a threat and engages in a defensive response. The goal of my dissertation research was to determine whether non-enemies contribute to natural biological control and enhance herbivore suppression beyond levels accomplished by consumptive natural enemies alone. Previous work in our lab demonstrated that pea aphids Acyrthosiphon pisum (Harris) respond to the non-enemy wasp Aphidius colemani Viereck by stopping feeding and dropping off of their host plant, resulting in a decline in pea aphid abundance even though pea aphids are not a host for A. colemani. My work evaluated whether this behavioral suppression of pea aphid populations by the non-enemy wasp is complementary with pea aphid suppression by the consumptive enemy Aphidius ervi Haliday. I investigated 1) the mechanisms responsible for and the magnitude of the non-consumptive effects of A. colemani and A. ervi on pea aphid populations, 2) the contributions of non-consumptive interactions to short-term and long-term suppression of aphid populations in the presence of consumptive natural enemies, and 3) the feasibility of increasing plant diversity in the field to enhance pea aphid suppression by facilitating behavioral non-consumptive interactions. I found that pea aphids respond to interactions with both wasp species, but they more frequently engaged in defensive behaviors such as dropping in the presence of the enemy A. ervi than the non-enemy A. colemani. The behavioral response of the pea aphid to the presence of the non-enemy was strong enough for A. colemani to suppress pea aphid populations in the short term, but this suppression was not maintained over the long term. When the non-enemy A. colemani was combined with the consumptive enemy A. ervi, there was some evidence for antagonism between the wasps over the short term. However, the non-enemy and enemy were complementary in their suppression of pea aphid populations over the long term, with more consistent and stable suppression when both wasps were present. I also demonstrated that increasing plant diversity in a field setting enhances suppression of pea aphid populations by promoting interactions between pea aphids and non-enemies. My work demonstrates that non-lethal organisms, or non-enemies, in the environment have an important role to play in influencing herbivore abundance, and that the addition of non-enemies to a community of lethal predators and parasitoids can lead to greater and more consistent suppression of herbivores in the long term.
Download or read book Population Consequences of Predator Avoidance Behavior in the Pea Aphid written by Erik Healy Nelson and published by . This book was released on 2003 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology of Aphid Parasites Hymenoptera Aphidiidae with Respect to Integrated Control written by P. Starý and published by Springer. This book was released on 1970-06-30 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Competitive Interactions Between the Pea Aphid Parasitoids Aphidius Ervi and Praon Pequodorum Hymenoptera Aphidiidae microform Influence on Guild Composition in Southern British Columbia written by Troy Philip Danyk and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1993 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Variation in the Effects of Host Plant on the Pea Aphid Acyrthosiphon Pisum Harris Homptera aphididae written by S. M. Chandrasiri Subasinghe and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Pea Aphid Acyrthosiphon Pisum Harris Hom Aphididae written by and published by . This book was released on 1963 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Pea Aphid Acyrthosiphon Pisum Harris Hom Aphididae with Specialreference to the Differences in Te Biology of the Green and Red Forms written by M. Markkula and published by . This book was released on 1963 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Control of Insect and Mite Pests in Iran written by Javad Karimi and published by Springer Nature. This book was released on 2021-04-28 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a reference to biological control of arthropod pests in agriculture and of public health importance in Iran. A quick glance over the literature shows a long history of biocontrol attempts in the country. Some historically important events highlighting the interest of Iranian academic, research and extension fields to the natural enemies and their applied aspects are provided. Iran, with an exception of the former USSR, was a pioneer in both basic and applied biocontrol in West Asia. The book consists of four parts: three parts for predators, parasitoids and pathogens, and last part for other approaches and analyses of the current state of biological control in Iran. The book provides the most up-to-date information on pest control and related topics of entomology in Iran. The chapters are written by scholars from major Universities and research centers in Iran.
