Long photoperiods and high temperatures induce them to become virginoparae, the reverse conditions, oviparae. SORENSON, C. E. BLACKMAN, R. L. } Life Cycle, This very polyphagous aphid can attack almost all protected crops. Feature Flags last update: Wed Nov 25 2020 01:58:55 GMT+0000 (Coordinated Universal Time) Close this message to accept cookies or find out how to manage your cookie settings. FIGUEROA, C. C. This chapter describes the principal photoperiodic phenomena observed in insects. Render date: 2020-11-25T02:39:59.350Z In laboratory experiments, the responses to short photoperiod (10 h) of clones of Myzus persicae (Sulz.) Loxdale, H. D. RAMÍREZ, C. C. Red clones were predominant in regions where aphids overwinter parthenogenetically on weeds or winter crops. Tarr, I. J. 1 Description; 2 Hosts; 3 Damage; 4 Life Cycle; 5 Control; 6 Originally compiled from; Description. Mandrioli, Mauro Fenton, Brian Get access to the full version of this content by using one of the access options below. The overall pattern of life-cycle variation can be explained largely on the basis of climatic differences between zones, and the effects of these differences on gene and genotype frequencies within the species. "lang": "en" Each has its own “counter” mechanism. A. Martin, I. Blanco 2010. "comments": false, Males of androcyclic clones were able to transmit their partially anholocyclic character through the sexual phase. ), Action de la photopériode sur la production des gynopares ailées de Dysaphis plantaginea Pass, Zur Frage der Überwinterung von Myzodes persicae Sulz. Le cycle biologique de Myzus persicae varie selon les conditions climatiques. Margaritopoulos, J.T. Individual development, survival, and fecundity, its population parameters, and lower developmental threshold (TL = 6.4 ± 0.5 ∘ C) and development DD = 171 ± 1), were similar to those of other aphid species of temperate regions (Campbell, ... Consequently, the proportion of holocyclic individuals is likely to be greater in regions with cooler climates such as regions C and N. Active individuals can benefit from continued development and reproduction if winter temperatures are favourable, whereas diapausing cold-hardy eggs are critical for overwintering in cool climates van Emden & Harrington, 2007). Sannino, L. The environmental factors involved in the determination of sexual morphs are considered. In glasshouses, it can transmit both viruses to various plant species (melon, marrow, tomato, egg plant, red pepper) and to wild plants which will act as reservoirs. Both timers measure the duration of the scotophase and “run fast” unless preceded by a photophase of more than 8 h. “Early” interruptions of the scotophase reset the ovipara timer but only appear to halt the progress of the male timer for the duration of the interruption. Total loading time: 0.697 The life cycle of green peach aphid varies considerably, and largely depends on winter temperatures. Reproductive polyphenism, which allows one genotype to produce sexual and asexual morphs, is an extreme case of phenotypic plasticity and is commonly observed in aphids. The bacteria Bacillus amyloliquefaciens is recognized as a producer of a variety of bioactive compounds. TAPIA, Daniel H. Tsitsipis, J.A. KAWAKAMI, K. The environmental factors involved in the determination of sexual morphs are considered. and ZARPAS, Kostas D. Imperial College Field Station, Silwood Park, Ascot, Berkshire, England, https://doi.org/10.1017/S0007485300047830. 2 : fundatrix (virginiparous, viviparous, apterous). During the years 1995–1999 the life cycle category of 2797 clones of Myzus persicae (Sulzer) was examined. "clr": false, 2005. Genetic diversity is determinant for pest species' success and vector competence. "lang": "en" 2007. Margaritopoulos, J.T. Instead Myzus ascalonicus is cold-hardy, ... Myzus persicae is a major pest on its summer hosts including potatoes, sugar beet, lettuce, brassicas and legumes, mainly because it transmits a number of important plant viruses. Here we show that the generalist aphid pest M. persicae is able to colonise diverse host plant species in the absence of genetic specialisation. nightlength to be below or above the inductive level. established from random samples of summer populations in southern England were generally stable and characteristic for each clone, and were of four distinct categories: (i) holocyclic, with clones terminated under short photoperiod by production of male and female sexual forms, (ii) intermediate, with a mixed response involving alatae intermediate between gynoparae and virginoparae, (iii) androcyclic, with production of some males along with continued parthenogenesis, and (iv) truly anholocyclic, with no significant response to short photoperiod. winged females are restless and take flight readily, which is typical of a post-teneral migratory phase that could carry them to a winter host. and Massonnet, B. Tauber, Maurice J. Blackman2 1Laboratory of Entomology and Agricultural Zoology, Faculty of Crop and Animal Production, University of Thessaly, Fytokou Str. This data will be updated every 24 hours. in different parts of the world is reviewed. Castañera, P. } "openAccess": "0", Access scientific knowledge from anywhere. }. Goundoudaki, Stavroula Copyright © Cambridge University Press 2002, Hostname: page-component-57c975d4c7-9dlk2 (Hom., Aphididae) in different parts of the world, in relation to genotype and environment June 1974 Bulletin of entomological research 63(04):595 - 607 Lenoir, Camille J. G. View all Google Scholar citations The photoperiodic response of the potato aphid and resulting emigration explain the population decline in flax, which occurs in mid-August each year regardless of the growth stage of the crop, population density, or average temperature at the time of the photoperiodic cue. and Populations of this aphid are highest in flax when the weather is warm and dry in July. SIMON, J.‐C. "metrics": true, 5 Our model suggests that climate warming is not the sole factor involved. View all Google Scholar citations and Pairwise distances of COI and EF-1α fragments between samples belonging to species complexes Adelges laricis – A. tardus, Dreyfusia nordmannianae – D. piceae, Sacchiphantes viridis – S. abietis, Gilletteella cooleyi – G. coweni and Pineus orientalis – P. pini suggest each species complex being a single species. The ecological aspects of life cycle variation are discussed. The progression of determination can be explained in terms of the competence of embryos in different stages of growth to respond to alternative maternal stimuli. II. - Winter eggs hatch in April, giving rise to the fundatrix, a viviparous parthenogenetic wingless female. 1978. Life-cycle variation, involving alternative methods of overwintering (holocycly and anholocycly), is found in many important pest aphids, and may have considerable ecological, genetic and economic significance.
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