نتایج جستجو برای: taxonomic significance
تعداد نتایج: 246736 فیلتر نتایج به سال:
The genus Carassius is a genus of the family Cyprinidae, that its species are important part of the ornamental fish industry in Iran. Due to the recent changes in the taxonomic status of the genus Carassius, it is necessary to review the taxonomic statues of its recorded populations in Iran. Therefore, the present study was conducted to provide an overview of the taxonomic status of the genus C...
The potential for obtaining a true mass spectrometric protein identification result depends on the choice of algorithm as well as on experimental factors that influence the information content in the mass spectrometric data. Current methods can never prove definitively that a result is true, but an appropriate choice of algorithm can provide a measure of the statistical risk that a result is fa...
BACKGROUND Nowadays, molecular techniques are widespread tools for the identification of biological entities. However, until very few years ago, their application to taxonomy provoked intense debates between traditional and molecular taxonomists. To prevent every kind of disagreement, it is essential to standardize taxonomic definitions. Along these lines, we introduced the concept of Integrate...
The structure of the chaetom and microsculpture abdominal tergites surface are analyzed for 60 species Scolytinae from different tribes genera. typi¬fication nomenclature these structures proposed first time. Eight types microsculptural elements five setae recognized. taxonomic significance is discussed.
The U.S. Endangered Species Act (ESA) allows listing of subspecies and other groupings below the rank of species. This provides the U.S. Fish and Wildlife Service and the National Marine Fisheries Service with a means to target the most critical unit in need of conservation. Although roughly one-quarter of listed taxa are subspecies, these management agencies are hindered by uncertainties about...
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