نتایج جستجو برای: inter and intra species variation

تعداد نتایج: 16961769  

2016
Marta Borgi Bonaventura Majolo

Background. Physical, visual, chemical, and auditory cues signalling fighting ability have independently evolved in many animal taxa as a means to resolve conflicts without escalating to physical aggression. Facial width-to-height ratio (fWHR, i.e., the relative width to height of the face) has been associated with dominance-related phenotypes both in humans and in other primates. In humans, fa...

2003
Marlène Elias Catherine Potvin

Trunk carbon (C) concentrations were assessed for 32 species of tropical trees to understand sources of variation. The main effect of species accounted for 38% of the total variance in C concentration (p < 0.0001). Tectona grandis demonstrated the greatest C concentration (49.4%), while Ormosia macrocalyx displayed the lowest C concentration (44.4%). We also observed significant differences amo...

Journal: :international journal of mathematical modelling and computations 0
n. ali santabrata chakravarty visva-bharati university india

the present article deals with the inter specific competition and intra-specific competition among predator populations of a prey-dependent three component food chain model consisting of two competitive predator sharing one prey species as their food. the behaviour of the system near the biologically feasible equilibria is thoroughly analyzed. boundedness and dissipativeness of the system are e...

2003
R. A. M. WATTIER L. L. GATHERCOLE S. J. ASSINDER C. J. GLIDDON K. L. DEAHL D. S. SHAW D. I. MILLS

The potato late-blight disease is caused by the pseudofungus Phytophthora infestans (Oomycetes). This pathogen was of historical importance as it caused the Irish Potato Famine. There is currently a worldwide resurgence of the disease. Following worldwide migrations as well as being able to discriminate P. infestans from related species are key issues. We present sequence variation of five inte...

Journal: :iranian journal of parasitology 0
a shahbazi tabriz research center of infectious and tropical diseases, tabriz university of medical sciences, tabriz, iran m akbarimoghaddam department of medical parasitology and mycology, tabriz university of medical sciences, tabriz, iran s izadi national institute of health research, tehran, iran a ghazanchaii department of medical parasitology and mycology, tabriz university of medical sciences, tabriz, iran n jalali national institute of health research, tehran, iran a bazmani tabriz research center of infectious and tropical diseases, tabriz university of medical sciences, tabriz, iran

background:  fascioliasis is considered as the most important helminthic infection of cattle and sheep. traditional approaches using morphological and biologic characters cannot cause a cer­tainty in the accurate and precise identification and intra-specific differences of fasciola spp. in this study, we identified fasciola species using its-1 marker and described genetic variation of each spec...

Journal: :Bioinformatics 2008
Bram Slabbinck Peter Dawyndt M. Martens Paul De Vos Bernard De Baets

UNLABELLED Selection of optimal biomarkers for the identification of different operational taxonomic units (OTUs) may be a hard and tedious task, especially when phylogenetic trees for multiple genes need to be compared. With TaxonGap we present a novel and easy-to-handle software tool that allows visual comparison of the discriminative power of multiple biomarkers for a set of OTUs. The compac...

Journal: :American journal of botany 2003
Jill S Miller Pamela K Diggle

Quantitative analyses of sexual expression show extensive interspecific variation in the strength of andromonoecy (proportions of hermaphroditic and staminate flowers) among Solanum species in the monophyletic section Lasiocarpa. The roles of phenotypic plasticity and inter- and intra-inflorescence architecture in the diversification of andromonoecy within this small clade were analyzed. Four s...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1376

saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...

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