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اولين فراخوان نوزدهمين کنگره گياه پزشکی ايران | |
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محل: موسسه تحقيقات گياه پزشکی کشور، تهران
زمان: 9 الی 12 مرداد 1389
برگزارکنندگان: انجمن حشره شناسی ايران، انجمن بيماری شناسی گياهی ايران، انجمن علوم علفهای هرز ايران و موسسه تحقيقات گياه پزشکی کشور
هيات رئيسه: دکتر علی رضوانی (رئيس)، دکتر کاوه بنانج (دبير) و مهندس احمد پروين (خزانه دار)
زمان ارسال مقاله: آخرين زمان ارسال مقاله 31 فروردين 1389 پيش بينی شده است. نحوه ارسال مقاله از طريق سايت کنگره و به صورت الکترونيکی خواهد بود که جزئيات آن در فراخوان بعدی به زودی اعلام خواهد شد.
هزينه ثبت نام: شرکت کنندگان عادی: پانصد هزار ریال - دانشجويان: دويست و پنجاه هزار ريال
شماره حساب جهت واريز هزينه ثبت نام: حساب 60668 بانک تجارت، شعبه دانشگاه شهيد بهشتی تهران (کد 3420) بنام انجمن حشره شناسی ايران
اسکان: امکان اسکان بصورت خوابگاه دانشجويی مجردی بوده و هزينه آن برای هر نفر در هر شب يکصد هزار ريال در نظر گرفته شده است.
آدرس دبيرخانه دائمی کنگره های گياه پزشکی ايران: تهران، موسسه تحقيقاات گياه پزشکی کشور، صندوق پستی 331-19615 تلفکس: 22427037 و 22174060 (021)
سايت کنگره: |
روزنامه ايران > شماره 4398 9/10/88 > صفحه 5
In 2009 the world’s macrophotographers- both amateur and professional- continued to capture breathtaking images of the arthropod microscape. I’ve been bookmarking insect photos from around the web that catch my eye, and after spending some time this week reviewing the candidates I’ve selected nine favorites. Wow. These are the images from fellow photographers that most captured my imagination over the past year.
Last year’s picks are here.
Why is this important? Because the common fruit fly (Drosophila melanogaster) is one of the bugs that cannot survive freezing and the little creature just so happens to share much of the same genetic makeup as humans, therefore finding a way to freeze them for research purposes is a top priority for geneticists the world over (about 75 per cent of known human disease genes have a recognizable match in the genetic code of fruit flies).
And why the large microscope?
"It's the only one in the world that's set up for this kind of imaging on insects," says lead researcher Brent Sinclair of his team's use of the Advanced Photon Source (APS), located near Chicago, Illinois. The APS generates high-energy x-rays that allow Sinclair and his collaborators to film the formation and spread of ice in real time as the maggots freeze.
An assistant professor in Western's Department of Biology, Sinclair explains that the physical processes of ice formation seem to be consistent among species that do and don't survive freezing. However, it seems that the insects that survive freezing have some control over the process of ice formation. They freeze at consistently higher temperatures than those that don't.
Sinclair says this implies that the main adaptations required to survive freezing are at the cellular or biochemical level, rather than because of fundamental structural differences.
"We're comparing Chymomyza amoena, an insect native to Ontario that survives freezing, with Drosophila melanogaster, because they're very close relatives," says Sinclair. "The idea is to find the magic bullet which allows some bugs to survive freezing and some don't. That's the goal here."
The Western-led research was published in the journal PLoS ONE, an peer-reviewed, open-access resource from the Public Library of Science.
Journal Reference:

Synchrotron x-ray visualisation of ice formation in insects during lethal and non-lethal freezing. (Credit: Image courtesy of University of Western Ontario)
Since 1996, crop plants genetically modified to produce bacterial proteins that are toxic to certain insects, yet safe for people, have been planted on more than 200 million hectares worldwide. The popularity of these Bt crops, named after the bacterium Bacillus thuringiensis, comes from their ability to kill some major pests, allowing farmers to save money and lessen environmental impacts by reducing insecticide sprays.
However, since insects can evolve resistance to toxins, strategies must be implemented to ensure that Bt crops remain effective. A new study published in the December issue of Journal of Economic Entomology entitled "Field-Evolved Insect Resistance to Bt Crops: Definition, Theory, and Data" (hhttp://www.entsoc.org/btcrops.pdf) analyzes insect resistance data from five continents, as reported in 41 studies, and concludes that existing theories and strategies can be used to predict, monitor, and manage insect resistance to Bt crops.
According to lead author Dr. Bruce E. Tabashnik, "Resistance is not something to be afraid of, but something that we expect and can manage if we understand it. Dozens of studies monitoring how pests have responded to Bt crops have created a treasure trove of data showing that resistance has emerged in a few pest populations, but not in most others. By systematically analyzing the extensive data, we can learn what accelerates resistance and what delays it. With this knowledge, we can more effectively predict and thwart pest resistance."
Among the authors' conclusions are:
With Bt crop acreage increasing worldwide, incorporating enhanced understanding of observed patterns of field-evolved resistance into future resistance management strategies can help to minimize the drawbacks and maximize the benefits of current and future generations of transgenic crops.
The full article is available at http://www.entsoc.org/btcrops.pdf
Source: Richard Levine
Entomological Society of America
A team of University of Minnesota researchers have discovered how PTTH, a hormone produced by the brain, controls the metamorphosis of juvenile insects into adults.
The finding, published in the Dec. 4 issue of Science, will help scientists understand how insect body size is programmed in response to developmental and environmental cues and offers the opportunity to develop a new generation of more environmentally safe ways to control agricultural pests as well as insects that carry human pathogens.
Scientists have known for 100 years that a brain-derived neuropeptide known as PTTH controls metamorphosis and although its specific sequence was identified 20 years ago, the way it signaled endocrine tissue has remained elusive until now.
"Understanding the signaling pathway that controls metamorphosis has been a long-term goal for many insect physiologists," says lead author Michael O'Connor, professor of genetics, cell biology and development at the University of Minnesota's College of Biological Sciences, where he holds the Ordway Chair in Developmental Biology.
Although humans don't undergo metamorphosis, passage from childhood through puberty and development of adult sexual characteristics is also regulated by a brain-derived neuropeptide that is controlled by genetics, environment and nutrition. Understanding how this process works in insects sheds light on human development.
"In its overall design, insect metamorphosis is very much like passage through puberty," O'Connor says. "From a biological point of view, both puberty and metamorphosis accomplish the same goal - to provide reproductive capacity for the species at the appropriate developmental time." The brain hormone becomes active when insects have reached a threshold body weight, which is also a trigger for human puberty.
Fruit flies and silk moths were used for the study; however, all insects that undergo complete metamorphosis appear to use this signaling system, O'Connor says. His next step is to learn how environmental and nutritional cues regulate the production of PTTH (prothoracicotropic hormone).
O'Connor is one of the University of Minnesota's most distinguished researchers working in the biological sciences. In addition to holding the Ordway Chair, he is an Investigator with the Howard Hughes Medical Institute. After earning a B.S. in biochemistry from Brown University and his Ph.D. from Tufts University School of Medicine, he conducted postdoctoral studies in the laboratory of Welcome Bender at Harvard Medical School. The O'Connor lab focuses on determining how signaling systems control animal development and studies the roles of several different types of growth factors in both insects and mice.
Co-authors for the Science paper are U of M postdoctoral researchers Kim Rewitz and Naoki Yamanaka and Lawrence Gilbert, who is an emeritus biology professor at the University of North Carolina.
Source: Patty Mattern
University of Minnesota
Vol. 29 (1), September 2009
Papers in Persian with English summary:
Mollashahi, M., Sahragard, A. and Hosseini, R.
A comparative study on the population growth parameters of Coccinella septempunctata (Col.: Coccinellidae) and melon aphid, Aphis gossypii (Hem.: Aphididae) under laboratory conditions
Ojie Ardebilie, M. M. and Nozari, J.
Study on the effect of digital calling songs of Cicada orni and Okanagana rimosa (Hemiptera: Cicadidae) for attracting house sparrows, Passer domesticus (Passeriformes: Passeridae)
Khajehzadeh, Y., Hasany Moghadam, M., Baghery, S. and Keyhanian, A. A.
Determination of economic injury level of Lipaphis erysimi (Hemiptera: Aphididae) on canola var. Hayola 401 in Khuzestan
Karimpour, Y., Fathipour, Y., Talebi, A. A., Moharramipour, S. and Sedaratian, A.
Determination of the larval feeding indices of Hyles euphorbiae (Lep.: Sphingidae) on different species of weedy spurges
(Short communications)
Karimpour, Y. and Razmi, M.
Pegomya bicolor (Dip.: Anthomyiidae), a species new to Iran fauna
Gheibi, M., Ostovan, H., Kamali, K. and Gilasian, E.
The first report of six tachinid flies from Iran (Diptera: Tachinidae)
Kishani Farahani, H., Goldansaz, S. H. and Sabahi, G.
Report of two fly parasitoids of carob moth, Ectomyelois ceratoniae (Lepidoptera: Pyralidae)
Papers in English:
Latif, M. A., Rahman, M. M., Alam, M. Z., Hossain, M. M. and Solaiman, A. R. M.
Threshold based spraying of flubendiamide for the management of brinjal shoot and fruit borer, Leucinodes orbonalis (Lep.: Pyralidae)
Fekrat, L., Shishehbor, P., Manzari, S. and Soleiman Nejadian, E.
Comparative development, reproduction and life table parameters of three populations of Thrips tabaci (Thysanoptera: Thripidae) on onion and tobacco
Naseri, B., Fathipour, Y., Moharramipour, S. and Hosseininaveh, V.
Life table parameters of the cotton bollworm, Helicoverpa armigera (Lep.: Noctuidae) on different soybean cultivars
(Short communications)
Moghaddam, M., Ram, P., Kamali, H. and Bazoobandi, M.
Polystomophora orientalis (Hemiptera: Coccoidea: Pseudococcidae), a new genus and species record for Iran
Alipanah, H., Buszko, J. and Zibaiee, K.
Swammerdamia pyrella (Lep.: Yponomeutidae), a genus and species new to Iran fauna
The 6th International Conference on the Biology of Butterflies will take place June 29 to July 2, 2010, in Edmonton, Alberta, Canada and is sponsored by the Department of Biological Sciences, University of Alberta.
The long-standing theme of this conference series, the biology of butterflies, focuses attention on recent developments in biology that rely on butterflies as research models, particularly in ecology and evolutionary biology.
The conference will include both invited symposia and contributed papers and posters.
Deadlines:
Early Registration – March 31, 2010
Abstract Submission – May 17, 2010
We are frequently updating our website HERE. Please check back for the most recent information on symposia and organized tours!
The Australian Entomological Society’s 41st AGM & Scientific Conference
Entomology for Australia’s future
26 - 30 September 2010
The Vines Resort, Swan Valley, Perth WA
www.aes2010.org/
On behalf of the organising committee, we extend a warm invitation to you to attend our meeting in Perth.
All intending delegates are encouraged to submit an “Expression of Interest Form” as soon as possible to assist the organising committee in the early stages of the conference planning.
Symposia details will also be available in February 2010 together with the
Call for Abstracts, Registration and accommodation
EXPRESSION OF INTEREST please click here
Sally Brown, Conference Secretariat
PO Box 108, Kenmore, QLD 4069, Australia
Sally.brown@uq.net.au