Taxonomy ‘taxis’ ‘nomos’ arrangement law



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AIMS OF A TAXONOMIST
Blackwelder & Boyden, 1952 ; Ehrlich, 1964 ;
Blackwelder, 1967 ; Mayr, 1969)
➢ To catalogue the diversity of life on earth & to preserve large samples (both of extant and extinct organisms) drawn from diversity in various sorts of collection To differentiate the various kinds of organisms and to point out their characteristics (both qualitatively & quantitatively) through descriptions, keys, illustrations etc To provide names for each kind of organism To develop a set of principles regarding the choice & relative importance of characters with the ultimate aim of arranging species in hierarchy of higher categories
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➢ To estimate genetic & phylogenetic relationships among organisms To contribute towards the understanding of evolutionary process To integrate data from all fields of biology and to detect and summarize significant patterns To document & preserve specimens to provide a useful reservoir of data To help in clarifying the place of taxonomy or systematics in general biology by revising their aims and priorities
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WHAT TAXONOMIST DO ?
Obtain specimens by collection, exchange, purchase, going
to museum or all
Obtain literature research papers/articles obtained on
request or exchange from authors or books from
libraries/stores etc.
Study specimens detailed study of all characters
Study of literature knowledge of previous published work
Identify specimens may be known or new species
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Publish conclusions in form of keys, new descriptions etc.
Propose new names for new things only
Classify species into genera, tribes, subfamily, family,
order, class, phylum
Maintain collection permanent collection has to be
maintained/preserved properly
Study new methods new techniques/ways to assist in
classifying species
Study nomenclature study rules for the work i.e. follow set
of rules of zoological nomenclature
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Why should we care about correctly identifying species Here's an excellent overview of the importance of phylogenetic systematics from the University of California at Berkeley Museum of Paleontology. Understanding classification at the alpha, beta and gamma levels can save you and the ecosystems around you.
The Evil Weevil
• In the s, Hawaiian forest preserves' fern populations were severely threatened by the invasion of an exotic fern weevil
(Syagrius fulvitarsis).
• No one knew where it came from, but it was prolific and difficult to control without massive amounts of pesticides (harmful to rare birds and other endemic wildlife In 1921, systematist Pemberton identified a single museum specimen of S. fulvitarsis - labeled with locality - as Australian The beetle's natural predators from Australia were then determined and (after careful study) were successfully used as biological control.
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