Journal of Ecosystem & Ecography
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Species Rarity
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Species Rarity
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Species Rarity
A species is rare because it has relatively few individuals; it is very uncommon or scarce. Rarity is a relative concept and is related to the physical size of the individuals as well as the pattern of their distribution. A species may be rare because it has a limited range, existing only in certain patches of habitat scattered across an area -- common in those locations but rare in the overall scheme of things.species abundances is so regularly observed among different taxonomic sets in geographically diverse systems is a question that has received considerable theoretical and empirical investigation.
Related Journals of Species Rarity
Journal of Aquaculture Research & Development, Journal of Biodiversity & Endangered Species, Journal of Earth Science & Climatic Change, Journal of Fisheries & Livestock Production, Poultry, Fisheries & Wildlife Sciences , Mammalian Species, Plant Species Biology, Marine Fisheries Review, Marine Mammal Science, Marine Pollution Bulletin, New Zealand Journal of Marine and Freshwater Research, Russian Journal of Marine Biology.
Species Rarity
Speaker PPTs
- K Mulkijanyan
Plant biopolymers from Boraginaceae family species and their synthetic derivatives: Prospective pharmacological agents
PPT Version | PDF Version - Yosef Yarden
Classically, the 3ââ¬â¢untranslated region (3ââ¬â¢UTR) is that region in eukaryotic protein-coding genes from the translation termination codon to the polyA signal. It is transcribed as an integral part of the mRNA encoded by the gene. However, there exists another kind of RNA, which consists of the 3ââ¬â¢UTR alone, without all other elements in mRNA such as 5ââ¬â¢UTR and coding region. The importance of independent 3ââ¬â¢UTR RNA (referred as I3ââ¬â¢UTR) was prompted by results of artificially introducing such RNA species into malignant mammalian cells. Since 1991, we found that the middle part of the 3ââ¬â¢UTR of the human nuclear factor for interleukin-6 (NF-IL6) or C/EBP gene exerted tumor suppression effect in vivo. Our subsequent studies showed that transfection of C/EBP 3ââ¬â¢UTR led to down-regulation of several genes favorable for malignancy and to up-regulation of some genes favorable for phenotypic reversion. Also, it was shown that the sequences near the termini of the C/EBP 3ââ¬â¢UTR were important for its tumor suppression activity. Then, the C/EBP 3ââ¬â¢UTR was found to directly inhibit the phosphorylation activity of protein kinase CPKC in SMMC-7721, a hepatocarcinoma cell line. Recently, an AU-rich region in the C/EBP 3ââ¬â¢UTR was found also to be responsible for its tumor suppression. Recently we have also found evidence that the independent C/EBP 3ââ¬â¢UTR RNA is actually exists in human tissues, such as fetal liver and heart, pregnant uterus, senescent fibroblasts etc. Through 1990ââ¬â¢s to 2000ââ¬â¢s, world scientists found several 3ââ¬â¢UTR RNAs that functioned as artificial independent RNAs in cancer cells and resulted in tumor suppression. Interestingly, majority of genes for these RNAs have promoter-like structures in their 3ââ¬â¢UTR regions, although the existence of their transcribed products as independent 3ââ¬â¢UTR RNAs is still to be confirmed. Our studies indicate that the independent 3ââ¬â¢UTR RNA is a novel non-coding RNA species whose function should be the regulation not of the expression of their original mRNA, but of some essential life activities of the cell as a whole.
PPT Version | PDF Version - Chioma Nwakanma
FISH SPECIES IDENTIFICATION AND BIODIVERSIFICATION IN ENUGU METROPOLIS RIVER BY DNA BARCODING
PPT Version | PDF Version - Paul W Sammarco
Geomorphological relief on mesophotic banks of the northern Gulf of Mexico, including geographic patterns and relationship to benthic species diversity
PPT Version | PDF Version - Ballagere Puttaraju Harini
Distribution and divergence of few common termites species: A study at Jnanabharathi
PPT Version | PDF Version - Anna Lange-Consiglio
AMNIOTIC DERIVED PROGENITOR CELLS IN DIFFERENT ANIMAL SPECIES IN VIEW OF CELL THERAPY APPLICATIONS
PPT Version | PDF Version - Iqbal Parwez
Genetic diversity and molecular declining population of four Channid species from North India and possible strategies
PPT Version | PDF Version - V.Barbakadze
Novel biologically active caffeic acid-derived biopolymer from different species of Boraginaceae family with potential therapeutic effect
PPT Version | PDF Version - Maria Teresa Mascellino
Candida bloodstream infections: species distribution and antifungal resistance in General Medicine wards and in Intensive Care Units (ICUs)
PPT Version | PDF Version