نتایج جستجو برای: to wild populations

تعداد نتایج: 10681020  

Journal: :journal of arthropod-borne diseases 0
parviz parvizi molecular systematics laboratory, department of parasitology, pasteur institute of iran, tehran, iran. farzaneh fardid molecular systematics laboratory, department of parasitology, pasteur institute of iran, tehran, iran and department of microbiology, islamic azad university of qom-branch, qom, iran. somaieh soleimani molecular systematics laboratory, department of parasitology, pasteur institute of iran, tehran, iran and department of microbiology, islamic azad university of qom-branch, qom, iran.

b ac k gr o und: w o lbachia pipientis is maternally inherited endoparasitic bacterium belonging to the α-proteobacteria, infecting 20–75% of all insect species including sand flies. the wolbachia surface protein ( wsp ) was employed as an appropriate marker for strain typing. the objective of our research was to find the possibility of detection of w. p ipientis in phlebotomus perfiliewi trans...

Gholam Ali Ghorbani Kazem Ahmadi,

Background: Decay of vaccine–induced antibody titres without boosting of the wild measles virus has been well documented. Revaccination against measles has reduced the prevalence of the disease worldwide. Revaccination may cause IgE induced anaphylaxis. Objective: To study measles IgG antibody in revaccinated populations and its relation to IgE induced hypersensitivity. Methods: Blood samples w...

Journal: :علوم باغبانی 0
محسن کافی نیر اعظم خوش خلق سیما عبدالمجید لیاقت

decrease in genome content may play a role in environmental adaptation. many studies were reported significant correlation between genome size, weather condition and germination percentage. relative genome content and its correlation with seedling establishment of 14 populations of tall fescue collected from various regions in iran and two commercial tall fescue cultivars were studied under dro...

Journal: :Molecular ecology 2008
Christian Roberge Eric Normandeau Sigurd Einum Helga Guderley Louis Bernatchez

Large annual escapees of farmed Atlantic salmon enhance the risk of extinction of wild populations through genetic and ecological interactions. Recently, we documented evolutionary change in gene transcription between farmed and wild Atlantic salmon after only five generations of artificial selection. While differences for most quantitative traits are expected to gradually dilute through repeat...

2012
Le Wang Xiaofeng Shi Yongquan Su Zining Meng Haoran Lin

The large yellow croaker (Larimichthys crocea) is the most important mariculture fish species in China and the wild stocks of this croaker have collapsed in the past decades due to high fishing pressure and habitat degradation. Due to a lack of wild croaker samples, however, studies concerning the genetic changes of the cultured croaker stocks compared to their wild counterparts were never cond...

Journal: :American journal of botany 1999
A Casas J Caballero A Valiente-Banuet J A Soriano P Dávila

Morphological variation was analyzed in wild, managed in situ, and cultivated populations of the columnar cactus Stenocereus stellatus in central Mexico. The purpose was to evaluate whether morphological divergence between manipulated and wild populations has resulted from domestication processes. Variation of 23 morphological characters was analyzed among 324 individuals from 19 populations of...

2014
O. M. Popoola Omoniyi Michael Popoola Emmanuel Adedayo Fasakin John Idowu Awopetu

Three wild populations of Clarias gariepinus from Esaodo (River Osun), Owena (River Owena), and Agbabu (River Oluwa), and three farmed populations, viz: Akure, Ilesa and Ado-Ekiti, in Southwest Nigeria, were analysed for their genetic differences using Random amplified polymorphic DNA (RAPD) analysis. Live specimens comprising 40 individuals (680 ± 3.28 g) from each location were collected and ...

Journal: :caspian journal of environmental sciences 2011
m. khoshkholgh m. pourkazemi s. nazari l. azizzadeh pormehr

the persian sturgeon, acipenser persicus (borodin, 1897), is an economically important species, which mainly inhabits the caspian sea. however, little is known about its population genetic structure. in this study, variation in nucleotide sequences of the mitochondrial dna (mtdna) control region of wild stock persian sturgeon was determined to assess the genetic diversity among different natura...

2013
Peter Civáň Zuzana Ivaničová Terence A. Brown

We used supernetworks with datasets of nuclear gene sequences and novel markers detecting retrotransposon insertions in ribosomal DNA loci to reassess the evolutionary relationships among tetraploid wheats. We show that domesticated emmer has a reticulated genetic ancestry, sharing phylogenetic signals with wild populations from all parts of the wild range. The extent of the genetic reticulatio...

2012
Y. Tunginba Singh Sudeshna Mazumdar-Leighton Mahaswetta Saikia Prashant Pant Sochanngam Kashung Kartik Neog Rajen Chakravorty Suresh Nair Javaregowda Nagaraju Cheerukeri Raghavendra Babu

A. assamensis is a phytophagous Lepidoptera from Northeast India reared on host trees of Lauraceae family for its characteristic cocoon silk. Source of these cocoons are domesticated farm stocks that crash frequently and/or wild insect populations that provide new cultures. The need to reduce dependence on wild populations for cocoons necessitates assessment of genetic diversity in cultivated a...

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