On the chromosome number of Lymnaea (Fossaria) truncatula (Muller)
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چکیده
منابع مشابه
survey on the rule of the due & hindering relying on the sheikh ansaris ideas
قاعده مقتضی و مانع در متون فقهی کم و بیش مستند احکام قرار گرفته و مورد مناقشه فقهاء و اصولیین می باشد و مشهور معتقند مقتضی و مانع، قاعده نیست بلکه یکی از مسائل ذیل استصحاب است لذا نگارنده بر آن شد تا پیرامون این قاعده پژوهش جامعی انجام دهد. به عقیده ما مقتضی دارای حیثیت مستقلی است و هر گاه می گوییم مقتضی احراز شد یعنی با ماهیت مستقل خودش محرز گشته و قطعا اقتضاء خود را خواهد داشت مانند نکاح که ...
15 صفحه اولInfluence of low temperatures on the cercarial shedding of Paramphistomum daubneyi from the snail Lymnaea truncatula.
Lymnaeids in nature are subjected to temperature fluctuations that may have an influence on the shedding of cercariae. Thus, experimental infections of Lymnaea truncatula by Paramphistomum daubneyi were performed to determine whether a sudden fall in temperature--daily dipping of infected snails into spring water at 14-15 degrees C, or at 6-8 degrees C--followed by its increase at 20 degrees C ...
متن کاملA New Amphistome Cercaria from Lymnaea Truncatula in Europe
Most of the authors working on the species composition of fam. Paramphistomidae (genus Paramphistomum) consider 5 valid species distributed in Europe, namely Paramphistomum cervi (Zeder, 1790)1, P. ichikawai Fukui, 1922, P. microboihrium Fischoeder, 19012, P. daubrteyi Dinnik, 19623 and P. gotoi Fukui, 1922 (cf. Kamburov, 1977 ; Sey, 1978, 1979, 1980, 1982 ; Odening and Gräfner, 1979, Odening, ...
متن کاملthe effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
The influence of different food sources on cercarial production in Lymnaea truncatula experimentally infected with Digenea.
Experimental infections of Lymnaea truncatula with a digenean species (Fasciola gigantica, F. hepatica, or Paramphistomum daubneyi) were performed under laboratory conditions to study the effect of four sources of food (microalgae, romaine lettuce, wheat germs, or modified Boray diet) on cercarial production. The mean number of F. hepatica, F. gigantica, or P. daubneyi cercariae was significant...
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ژورنال
عنوان ژورنال: Medical Entomology and Zoology
سال: 1956
ISSN: 0424-7086,2185-5609
DOI: 10.7601/mez.7.109_2