* DNA barcoding of elasmobranchs from Indian coast and its reliability in delineating geographically widespread specimens.
- Identification of elasmobranchs by conventional taxonomy is difficult due to similarities in morphological characters. Species-specific molecular markers are good choice for identifying species irrespective of it's life stage. Recently, mitochondrial cytochrome c oxidase subunit I (COI) gene got global recognition as a barcode gene to discriminate all animals up-to species level. In this study, mitochondrial COI partial gene was used to develop DNA barcodes for 18 species of elasmobranchs (10 species of sharks and 8 species of rays). The COI barcodes clearly distinguished all the species with high interspecific distance values than intraspecific values. The average interspecific and intraspecific distance values are 8.6% and 0.3% for sharks, respectively and 12.4% and 0.63% for rays, respectively using K2P method. The Neighbor-Joining tree showed distinct clusters shared by the species of same genera. The COI barcodes were also used to estimate allopatric divergences for selected species across broad geographical locations and found that Sphyrna lewini, Aetobatus narinari and Neotrygon kuhlii have cryptic diversity.
=>特有の, 特効薬, 明確な, 特定の, 種の, はっきりした
Overview of noun specific
The noun specific has 2 senses (no senses from tagged texts)
1. particular, specific -- (a fact about some part (as opposed to general); "he always reasons from
the particular to the general")
2. specific -- (a medicine that has a mitigating effect on a specific disease; "quinine is a
specific for malaria")
Overview of adj specific
The adj specific has 4 senses (first 2 from tagged texts)
1. (39) specific -- ((sometimes followed by `to') applying to or characterized by or distinguishing
something particular or special or unique; "rules with specific application"; "demands specific to
the job"; "a specific and detailed account of the accident")
2. (5) specific -- (stated explicitly or in detail; "needed a specific amount")
3. specific -- (relating to or distinguishing or constituting a taxonomic species; "specific
characters")
4. specific -- (being or affecting a disease produced by a particular microorganism or condition;
used also of stains or dyes used in making microscope slides; "quinine is highly specific for
malaria"; "a specific remedy"; "a specific stain is one having a specific affinity for particular
structural elements")
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