Use of transponders for individual marking of Unio crassus Philipsson, 1788 (Bivalvia: Unionidae) in mountain rivers
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چکیده
منابع مشابه
Occurrence of Unio Crassus (Bivalvia, Unionidae) Depending on Water Chemistry in the Foreland of the Polish Carpathians
Thick shelled river mussel Unio crassus (included in IUCN Red Data List) is a benthic, filter-feeding animal very susceptible to any changes of water chemistry. In this paper we report on the new sites of this species in the Małopolska region – an area of strong anthropogenic pressure. Physical and chemical parameters have been compared between 8 rivers inhabited and not inhabited by the mussel...
متن کاملHost specificity and metamorphosis of the glochidium of the freshwater mussel Unio tumidiformis (Bivalvia: Unionidae).
The glochidium larvae of freshwater mussels of the family Unionidae need to find suitable hosts to attach themselves and metamorphose into free-living juveniles. The specificity of the host-parasite relationship was investigated for the Iberian Unio tumidiformis Castro, 1885 by means of experimental infections and also by analyzing naturally infected fish. The process of encapsulation of glochi...
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abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...
15 صفحه اولMarking penguins with implanted transponders
Individual marking of birds is required in many studies. Lance Richdale pioneered marking of penguins in the 1930s (Richdale 195 1, 1957). His most reliable method was punching holes in the feet, but he also used homemade aluminium leg bands which had to be replaced every three years because of wear. Subsequently, researchers reported that leg bands used on Antarctic penguins caused injuries an...
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this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
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ژورنال
عنوان ژورنال: Folia Malacologica
سال: 2017
ISSN: 1506-7629
DOI: 10.12657/folmal.025.010