Sentences with phrase «species identification methods»
Even the species identification methods are deficient, regardless of the fact that gelatinous zooplankton can be abundant in the ecosystem and have a major effect on both the upper and lower levels of the food web,» says Majaneva.
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Larvae of different species can appear nearly identical, and traditional identification methods are based on detailed microscopic examination, a process that can take a long time.
«DNA sequence - based methods of identification enabled us to differentiate among species of fungi and to conclude that the diversity of fungi is highly dependent on the body site rather than the person who is sampled,» said Dr. Kong.
«Alternative identification methods for threatened species urged.»
«It is our goal to establish DNA barcoding in the international guidelines as a method for the unique identification of the species used in the tests.
«Our IHC method is a breakthrough in hatchling sex identification in leatherback turtles, a species whose reproductive system differentiates more slowly than on other sea turtle species.»
Though the evolutionary biologists don't expect their new combined approach to be applicable to all species, they believe it offers a pathway to future researchers looking to negotiate the territory between traditional identification methods and powerful new genetic techniques.
The efficiency of the method hinges on the degree of sequence divergence among species and species - level identifications are relatively straightforward when the average genetic distance among individuals within a species does not exceed the average genetic distance between sister species.
DNA barcoding aims to provide an efficient method for species - level identifications using an array of species specific molecular tags derived from the 5 ′ region of the mitochondrial cytochrome c oxidase I (COI) gene.
The photo identification method has many advantages over tagging methods as its low cost and doesn't directly affect the target species.