Dataset Information

Phylogenetic Status and Morphological Characters of Rhabditolaimus anoplophorae (Rhabditida: Diplogastridae).

ABSTRACT: Rhabditolaimus anoplophorae Kanzaki and Futai was re-isolated from its type host (carrier), the cerambycid beetle Anoplophora malasiaca, collected in an experimental field of the Forestry and Forest Products Research Institute, Tsukuba, Ibaraki, Japan. The nematode was cultured on nematode growth medium plates seeded with Escherichia coli OP50, and its morphological characters and molecular profile were examined to modernize the description. Scanning electron microscopic and light microscopy revealed the presence of four stomatal flaps, a very long gymnostom, a single ventral papilla in males, and a horizontal slit-like vulval opening in females. The positions of the deirids, hemizonids, phasmids, and rectal glands are additionally described, and the absence of a male bursa was confirmed. Phylogenetically, the genus forms a well-supported clade in the family Diplogastridae. Rhabditolaimus anoplophorae is a member of the monophyletic Rhabditolaimus clade and is closely related to R. leuckarti and several undescribed species.

SUBMITTER: Kanzaki N

PROVIDER: S-EPMC3957571 | biostudies-literature | 2014 Mar

REPOSITORIES: biostudies-literature

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Publications

Phylogenetic Status and Morphological Characters of Rhabditolaimus anoplophorae (Rhabditida: Diplogastridae).

Kanzaki Natsumi N Giblin-Davis Robin M RM

Journal of nematology 20140301 1

Rhabditolaimus anoplophorae Kanzaki and Futai was re-isolated from its type host (carrier), the cerambycid beetle Anoplophora malasiaca, collected in an experimental field of the Forestry and Forest Products Research Institute, Tsukuba, Ibaraki, Japan. The nematode was cultured on nematode growth medium plates seeded with Escherichia coli OP50, and its morphological characters and molecular profile were examined to modernize the description. Scanning electron microscopic and light microscopy rev ...[more]

PMID: 24644370

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Project description:The construction of morphological character matrices is central to paleontological systematic study, which extracts paleontological information from fossils. Although the word information has been repeatedly mentioned in a wide array of paleontological systematic studies, its meaning has rarely been clarified nor specifically defined. It is important, however, to establish a standard to measure paleontological information because fossils are hardly complete, rendering the recognition of homologous and homoplastic structures difficult. Here, based on information theory, we show the deep connections between paleontological systematic study and communication system engineering. Information is defined as the decrease of uncertainty and it is the information in morphological characters that allows distinguishing operational taxonomic units (OTUs) and reconstructing evolutionary history. We propose that concepts in communication system engineering such as source coding and channel coding, correspond to the construction of diagnostic features and the entire character matrices in paleontological studies. The two coding strategies should be distinguished following typical communication system engineering, because they serve dual purposes. With character matrices from six different vertebrate groups, we analyzed their information properties including source entropy, mutual information, and channel capacity. Estimation of channel capacity shows character saturation of all matrices in transmitting paleontological information, indicating that, due to the presence of noise, oversampling characters not only increases the burden in character scoring, but also may decrease quality of matrices. We further test the use of information entropy, which measures how informative a variable is, as a character weighting criterion in parsimony-based systematic studies. The results show high consistency with existing knowledge with both good resolution and interpretability.

Dataset Information

Phylogenetic Status and Morphological Characters of Rhabditolaimus anoplophorae (Rhabditida: Diplogastridae).

Publications

Phylogenetic Status and Morphological Characters of Rhabditolaimus anoplophorae (Rhabditida: Diplogastridae).

Similar Datasets

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