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- W4214894635 abstract "Pristionchus pacificus is a nematode model for the developmental genetics of morphological polyphenism, especially at the level of individual cells. Morphological polyphenism in this species includes an evolutionary novelty, moveable teeth, which have enabled predatory feeding in this species and others in its family (Diplogastridae). From transmission electron micrographs of serial thin sections through an adult hermaphrodite of P. pacificus, we three-dimensionally reconstructed all epithelial and myoepithelial cells and syncytia, corresponding to 74 nuclei, of its face, mouth, and pharynx. We found that the epithelia that produce the predatory morphology of P. pacificus are identical to Caenorhabditis elegans in the number of cell classes and nuclei. However, differences in cell form, spatial relationships, and nucleus position correlate with gross morphological differences from C. elegans and outgroups. Moreover, we identified fine-structural features, especially in the anteriormost pharyngeal muscles, that underlie the conspicuous, left-right asymmetry that characterizes the P. pacificus feeding apparatus. Our reconstruction provides an anatomical map for studying the genetics of polyphenism, feeding behavior, and the development of novel form in a satellite model to C. elegans." @default.
- W4214894635 created "2022-03-05" @default.
- W4214894635 creator A5017044626 @default.
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- W4214894635 date "2022-03-01" @default.
- W4214894635 modified "2023-09-27" @default.
- W4214894635 title "Comparative reconstruction of the predatory feeding structures of the polyphenic nematode <i>Pristionchus pacificus</i>" @default.
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- W4214894635 doi "https://doi.org/10.1111/ede.12397" @default.
- W4214894635 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35239990" @default.
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