STUDIES ON THE TREMATODE FAMILY MICROPHALLIDAE TRAVASSOS, 1921
نویسندگان
چکیده
منابع مشابه
Genetic and environmental determinants of host use in the trematode Maritrema novaezealandensis (Microphallidae).
Factors constraining host specificity are poorly understood. Intraspecific variation in host preferences in generalist parasites may reveal which factors affect patterns of host use, and thus the evolution of specialization. Here, laboratory experiments examined genetic variation in host preferences and the effect of a refugium against infection on host use. Firstly, 6 cercarial clones of the t...
متن کاملThe Dentists' Act, 1921
new profession by the possible student. The professional status of the Dentist, which was to have been made secure by the Act, was so affected by the unprofessional conduct, such as advertising and canvassing, of the uneducated and unregistered, that few could be found to enter the profession, and so what the Act set out to secure for the protection of the public, it failed to obtain, in that i...
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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 اولredescription of the lutztrema (lutziella) microacetabularae rohde, 1966 trematode of the family dicrocoelidae (looss, 1899).
background: a known species lutztrema (lutziella) microacetabularae rhode, 1966 is being described for the first time from pakistan. this species is characterized by having body long and slender, oral sucker subterminal, acetabulum smaller than oral sucker lying in anterior third of the body, pharynx small, esophagus promi-nent which become gradually wider and bifurcates in to two rudimentary c...
متن کاملFamily studies on hanseniasis cases.
Examination of intrafamilial contacts among the first degree relatives of 400 hanseniasis patients, revealed an additional 101 cases. Distribution pattern of disease types detected in the contacts, in relation to that found in the index cases, are analysed. An attempt has been made to evaluate the role of genetic factor in determining the type of hanseniasis in a patient.
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ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1940
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1537900