Tetranychidae

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Tetsuo Gotoh - One of the best experts on this subject based on the ideXlab platform.

  • phylogeny of the spider mite sub family tetranychinae acari Tetranychidae inferred from rna seq data
    PLOS ONE, 2018
    Co-Authors: Tomoko Matsuda, Toshinori Kozaki, Kazuo Ishii, Tetsuo Gotoh
    Abstract:

    Phylogenetic trees of spider mites were previously obtained using 18S and 28S rRNA genes. Because some of the bootstrap values were relatively low, these trees were unable to completely resolve the phylogeny. Here, we obtained RNA-Seq data for the 72 known species (73 strains) of spider mites to analyze the phylogeny of the sub-family Tetranychinae. The data were de novo assembled into a total alignment length of 790,047 bases corresponding to 264,133 amino acid residues in 652 genes. The sequence dataset was 200 times larger than the data used in the previous study. The new trees were much more robust and more clearly defined the clades of the tribes and the genera of the sub-family Tetranychinae. The tribe Tetranychini was polyphyletic because a monophyletic clade of Eurytetranychini was placed inside it. The six genera from which two or more species were sampled appeared to be monophyletic, but four genera (Schizotetranychus, Eotetranychus, Oligonychus and Tetranychus) appeared to be polyphyletic. These results strongly support the previous molecular inference of the polyphyletic tribes and genera, although the molecular phylogeny of the sub-family Tetranychinae does not fully agree with the current morphology-based taxonomy. The taxonomy of the sub-family Tetranychinae should be revised according to the molecular relationships revealed by this study.

  • phylogenetic analysis of the spider mite sub family tetranychinae acari Tetranychidae based on the mitochondrial coi gene and the 18s and the 5 end of the 28s rrna genes indicates that several genera are polyphyletic
    PLOS ONE, 2014
    Co-Authors: Tomoko Matsuda, Maiko Morishita, Norihide Hinomoto, Tetsuo Gotoh
    Abstract:

    The spider mite sub-family Tetranychinae includes many agricultural pests. The internal transcribed spacer (ITS) region of nuclear ribosomal RNA genes and the cytochrome c oxidase subunit I (COI) gene of mitochondrial DNA have been used for species identification and phylogenetic reconstruction within the sub-family Tetranychinae, although they have not always been successful. The 18S and 28S rRNA genes should be more suitable for resolving higher levels of phylogeny, such as tribes or genera of Tetranychinae because these genes evolve more slowly and are made up of conserved regions and divergent domains. Therefore, we used both the 18S (1,825–1,901 bp) and 28S (the 5′ end of 646–743 bp) rRNA genes to infer phylogenetic relationships within the sub-family Tetranychinae with a focus on the tribe Tetranychini. Then, we compared the phylogenetic tree of the 18S and 28S genes with that of the mitochondrial COI gene (618 bp). As observed in previous studies, our phylogeny based on the COI gene was not resolved because of the low bootstrap values for most nodes of the tree. On the other hand, our phylogenetic tree of the 18S and 28S genes revealed several well-supported clades within the sub-family Tetranychinae. The 18S and 28S phylogenetic trees suggest that the tribes Bryobiini, Petrobiini and Eurytetranychini are monophyletic and that the tribe Tetranychini is polyphyletic. At the genus level, six genera for which more than two species were sampled appear to be monophyletic, while four genera (Oligonychus, Tetranychus, Schizotetranychus and Eotetranychus) appear to be polyphyletic. The topology presented here does not fully agree with the current morphology-based taxonomy, so that the diagnostic morphological characters of Tetranychinae need to be reconsidered.

  • A new species of the genus Bryobia Koch (Acari: Tetranychidae) from Iran
    International Journal of Acarology, 2008
    Co-Authors: Mohammad Khanjani, Tetsuo Gotoh, Yasuki Kitashima
    Abstract:

    Abstract A new mite, Bryobia mirmoayedii n. sp. (Tetranychidae), is described and illustrated based on females, a male and larvae collected from the grass, Poa bulbosa L. (Poaceae), in Rijabin Kermanshah Province, Iran.

  • Nucleus–cytoplasm interactions causing reproductive incompatibility between two populations of Tetranychus quercivorus Ehara et Gotoh (Acari: Tetranychidae)
    Heredity, 1995
    Co-Authors: Tetsuo Gotoh, Hiroyuki Oku, Kazuaki Moriya, Masanori Odawara
    Abstract:

    Nucleus–cytoplasm interactions causing reproductive incompatibility between two populations of Tetranychus quercivorus Ehara et Gotoh (Acari: Tetranychidae)

Tomoko Matsuda - One of the best experts on this subject based on the ideXlab platform.

  • phylogeny of the spider mite sub family tetranychinae acari Tetranychidae inferred from rna seq data
    PLOS ONE, 2018
    Co-Authors: Tomoko Matsuda, Toshinori Kozaki, Kazuo Ishii, Tetsuo Gotoh
    Abstract:

    Phylogenetic trees of spider mites were previously obtained using 18S and 28S rRNA genes. Because some of the bootstrap values were relatively low, these trees were unable to completely resolve the phylogeny. Here, we obtained RNA-Seq data for the 72 known species (73 strains) of spider mites to analyze the phylogeny of the sub-family Tetranychinae. The data were de novo assembled into a total alignment length of 790,047 bases corresponding to 264,133 amino acid residues in 652 genes. The sequence dataset was 200 times larger than the data used in the previous study. The new trees were much more robust and more clearly defined the clades of the tribes and the genera of the sub-family Tetranychinae. The tribe Tetranychini was polyphyletic because a monophyletic clade of Eurytetranychini was placed inside it. The six genera from which two or more species were sampled appeared to be monophyletic, but four genera (Schizotetranychus, Eotetranychus, Oligonychus and Tetranychus) appeared to be polyphyletic. These results strongly support the previous molecular inference of the polyphyletic tribes and genera, although the molecular phylogeny of the sub-family Tetranychinae does not fully agree with the current morphology-based taxonomy. The taxonomy of the sub-family Tetranychinae should be revised according to the molecular relationships revealed by this study.

  • phylogenetic analysis of the spider mite sub family tetranychinae acari Tetranychidae based on the mitochondrial coi gene and the 18s and the 5 end of the 28s rrna genes indicates that several genera are polyphyletic
    PLOS ONE, 2014
    Co-Authors: Tomoko Matsuda, Maiko Morishita, Norihide Hinomoto, Tetsuo Gotoh
    Abstract:

    The spider mite sub-family Tetranychinae includes many agricultural pests. The internal transcribed spacer (ITS) region of nuclear ribosomal RNA genes and the cytochrome c oxidase subunit I (COI) gene of mitochondrial DNA have been used for species identification and phylogenetic reconstruction within the sub-family Tetranychinae, although they have not always been successful. The 18S and 28S rRNA genes should be more suitable for resolving higher levels of phylogeny, such as tribes or genera of Tetranychinae because these genes evolve more slowly and are made up of conserved regions and divergent domains. Therefore, we used both the 18S (1,825–1,901 bp) and 28S (the 5′ end of 646–743 bp) rRNA genes to infer phylogenetic relationships within the sub-family Tetranychinae with a focus on the tribe Tetranychini. Then, we compared the phylogenetic tree of the 18S and 28S genes with that of the mitochondrial COI gene (618 bp). As observed in previous studies, our phylogeny based on the COI gene was not resolved because of the low bootstrap values for most nodes of the tree. On the other hand, our phylogenetic tree of the 18S and 28S genes revealed several well-supported clades within the sub-family Tetranychinae. The 18S and 28S phylogenetic trees suggest that the tribes Bryobiini, Petrobiini and Eurytetranychini are monophyletic and that the tribe Tetranychini is polyphyletic. At the genus level, six genera for which more than two species were sampled appear to be monophyletic, while four genera (Oligonychus, Tetranychus, Schizotetranychus and Eotetranychus) appear to be polyphyletic. The topology presented here does not fully agree with the current morphology-based taxonomy, so that the diagnostic morphological characters of Tetranychinae need to be reconsidered.

Shahriar Jafari - One of the best experts on this subject based on the ideXlab platform.

M Benito - One of the best experts on this subject based on the ideXlab platform.

  • occupational allergy due to spider mites tetranychus urticae koch and panonychus citri koch
    Clinical & Experimental Allergy, 1996
    Co-Authors: E Burches, Ana I Pelaez, C Morales, J V Braso, A Rochina, Susana Perez Lopez, M Benito
    Abstract:

    BACKGROUND Allergy to both house dust and storage mites is well established, but information about other species of mites is scant. OBJECTIVE One hundred and fifty patients directly exposed to an occupational environment were studied to assess whether spider mites (Tetranychidae) caused their allergic symptoms. We also studied a group of 50 patients from an urban environment, who were not occupationally exposed to spider mites, with a strong sensitization to Dermatophagoides pteronyssinus (RAST class 4). METHODS Case history (including questions about work-related symptoms), skin tests, RAST and conjunctival provocation tests were performed in both groups using Tetranychus urticae and Panonychus citri extracts as allergens. Cross-reactivity between spider mites and D. Pteronyssinus was determined by RAST inhibition. RESULTS Fifty-four of 150 rural workers were positive to Tetranychidae and in all cases there was an associated sensitization to D. pteronyssinus. All individuals belonging to the urban group were positive to spider mites. RAST inhibition demonstrated a significant cross-reactivity between Tetranychidae and D. pteronyssinus. Five of fifty-four rural workers sensitized to spider mites developed symptoms only when they handled plants or fruits infested with spider mites and they became asymptomatic when exposure ceased. CONCLUSION In the rural population studied, 36% of workers were found to be sensitized to spider mites and 10% had symptoms associated with occupational exposure. Since specific IgE antibodies to spider mites could not be detected in the absence of the specific IgE antibodies to D. pteronyssinus, and as all the affected workers were RAST positive to D. pteronyssinus, prior sensitization to house dust mites may be a risk factor for occupational allergy to spider mites.

Carlos H W Flechtmann - One of the best experts on this subject based on the ideXlab platform.