CODING MULTISTATE CHARACTERS, WITH SPECIAL REFERENCE TO THE USE OF PARASITES AS CHARACTERS OF THEIR HOSTS
CODING MULTISTATE CHARACTERS, WITH SPECIAL REFERENCE TO THE USE OF PARASITES AS CHARACTERS OF THEIR HOSTS
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DOI:
10.2307/2413066
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发表时间:
1987-09-01
期刊:
影响因子:
--
通讯作者:
DEETS, GB
中科院分区:
文献类型:
--
作者:
OGRADY, RT;DEETS, GB
This paper examines four methods of representing multistate transformation series with a numerical code. The three that have the broadest applications are Additive Binary Coding, Redundant Linear Coding, and Nonredundant Linear Coding. The fourth method, internal rooting, has specialized applications for coding basally dichotomous series. The first three methods are capable of unambiguously representing multistate trees with or without specified nodal values. The Nonredundant Linear Coding method is recommended because it produces the most efficient code. The Redundant Linear Coding method can produce unjustified weighting of areas of a multistate tree. We examine coding procedures for working with multistate transformation series of intrinsic organic characters of their hosts. Use of the inculsive ORing technique to code for the occurrence of more than one parasite taxon per host taxon can result in the distortion of phylogenetic information and the drawing of incorrect inferences of relationships.