نتایج جستجو برای: coi

تعداد نتایج: 3827  

Journal: :European Journal of Open, Distance and E-Learning 2020

2015
Yuan Jiang Zhongqi Yang Xiaoyi Wang Yuxia Hou

The species belonging to Sclerodermus (Hymenoptera: Bethylidae) are currently the most important insect natural enemies of wood borer pests, mainly buprestid and cerambycid beetles, in China. However, some sibling species of this genus are very difficult to distinguish because of their similar morphological features. To address this issue, we conducted phylogenetic and genetic analyses of cytoc...

2018
Rawadee Kumlert Kittipong Chaisiri Tippawan Anantatat Alexandr A Stekolnikov Serge Morand Anchana Prasartvit Benjamin L Makepeace Sungsit Sungvornyothin Daniel H Paris

BACKGROUND Conventional gold standard characterization of chigger mites involves chemical preparation procedures (i.e. specimen clearing) for visualization of morphological features, which however contributes to destruction of the arthropod host DNA and any endosymbiont or pathogen DNA harbored within the specimen. METHODOLOGY/PRINCIPAL FINDINGS In this study, a novel work flow based on autof...

2011
Robert Klitzman

UNLABELLED Conflicts of interest (COIs) in research have received increasing attention, but many questions arise about how Institutional Review Boards (IRBs) view and approach these. METHODS I conducted in-depth interviews of 2 hours each with 46 US IRB chairs, administrators, and members, exploring COI and other issues related to research integrity. I contacted leaders of 60 IRBs (every four...

2012
Ibrahim A. Arif Haseeb A. Khan Joseph B. Williams Mohammad Shobrak Waad I. Arif

Populations of Houbara Bustards have dramatically declined in recent years. Captive breeding and reintroduction programs have had limited success in reviving population numbers and thus new technological solutions involving molecular methods are essential for the long term survival of this species. In this study, we sequenced the 694 bp segment of COI gene of the four specimens of Asian Houbara...

2016
V Prasad S V Rajkumar

The management of financial conflict of interest (COI) in academic medicine has again been thrust in the spotlight, with some writers contending that current COI policies—largely a mandate to disclose conflicts, and, on rare occasion, recusal from academic opportunities or divestiture of the conflict—may perversely stifle biomedical innovation. Others have argued in opposition, noting that loss...

2011
Mari Carmen Pineda Susanna López-Legentil Xavier Turon

Genetic tools have greatly aided in tracing the sources and colonization history of introduced species. However, recurrent introductions and repeated shuffling of populations may have blurred some of the genetic signals left by ancient introductions. Styela plicata is a solitary ascidian distributed worldwide. Although its origin remains unclear, this species is believed to have spread worldwid...

2017
Karina Wieczorek Dorota Lachowska-Cierlik Łukasz Kajtoch Mariusz Kanturski

The Chaitophorinae is a bionomically diverse Holarctic subfamily of Aphididae. The current classification includes two tribes: the Chaitophorini associated with deciduous trees and shrubs, and Siphini that feed on monocotyledonous plants. We present the first phylogenetic hypothesis for the subfamily, based on molecular and morphological datasets. Molecular analyses were based on the mitochondr...

2017
Edward Pfeiler Nestor O. Nazario-Yepiz Fernan Pérez-Gálvez Cristina Alejandra Chávez-Mora Mariana Ramírez Loustalot Laclette Eduardo Rendón-Salinas Therese Ann Markow

Population genetic variation and demographic history in Danaus plexippus (L.), from Mexico were assessed based on analyses of mitochondrial cytochrome c oxidase subunit I (COI; 658 bp) and subunit II (COII; 503 bp) gene segments and 7 microsatellite loci. The sample of 133 individuals included both migratory monarchs, mainly from 4 overwintering sites within the Monarch Butterfly Biosphere Rese...

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