''Parduczia'' is a genus of
karyorelict ciliates
The ciliates are a group of alveolates characterized by the presence of hair-like organelles called cilia, which are identical in structure to eukaryotic flagella, but are in general shorter and present in much larger numbers, with a different ...
in the family Geleiidae.
''Parduczia'' species are filiform to serpentiform ciliates characterized by their giant size (1.2 to 2.5 mm on average) and their very long buccal split.
The genus name is a
taxonomic patronym honoring the protistologist Béla Párducz (1911–1964).
Systematics
Five species are currently described in the genus ''Parduczia''.
* ''
Parduczia arcachonense''
(Nouzarède, 1965) Dragesco, 1999
* ''
Parduczia filiformis''
(Nouzarède, 1977) Dragesco, 1999
* ''
Parduczia martinicense''
(Nouzarède, 1977) Dragesco, 1999
* ''
Parduczia murmanica''
(Raikov, 1962) Dragesco, 1999
* ''
Parduczia orbis''
(Fauré-Fremiet, 1950) Dragesco, 1999 is the type species of the genus.
Phylogeny
Comparison and
phylogenetic analysis
In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical data ...
of
18S rRNA
18S ribosomal RNA (abbreviated 18S rRNA) is a part of the ribosomal RNA in eukaryotes. It is a component of the Eukaryotic small ribosomal subunit (40S) and the cytosolic homologue of both the 12S rRNA in mitochondria and the 16S rRNA in plas ...
sequences showed that ''Parduczia orbis'' is the
sister group
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree.
Definition
The expression is most easily illustrated by a cladogram:
Taxon A and ...
to ''
Corlissina maricaensis''. In turn, these two genera form a
clade
In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach t ...
with ''
Geleia
''Geleia'' is a genus of karyorelict ciliates in the family Geleiidae.
The genus name is a taxonomic patronym honoring the Hungarian protistologist József von Gelei (1885-1952).
Systematics
17 species are currently described in the genus ...
''.
Alternative genetic code
An alternative
genetic code
Genetic code is a set of rules used by living cell (biology), cells to Translation (biology), translate information encoded within genetic material (DNA or RNA sequences of nucleotide triplets or codons) into proteins. Translation is accomplished ...
is used by the
nuclear genome
Nuclear DNA (nDNA), or nuclear deoxyribonucleic acid, is the DNA contained within each cell nucleus of a eukaryotic organism. It encodes for the majority of the genome in eukaryotes, with mitochondrial DNA and plastid DNA coding for the rest. It ...
of ''Parduczia'' sp.
This code corresponds to the
translation table 27 and involves the unusual reassignment of the three standard termination codons to sense codons:
Notes
References
{{Taxonbar, from=Q89577854
Ciliate genera
Karyorelictea
Taxa described in 1999