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  1. Article ; Online: Development and Reproduction of a Japanese Strain of Ctenolepisma calvum (Ritter, 1910) at Room Temperature

    Hiroki Watanabe / Megumi Shimada / Yoshinori Sato / Rika Kigawa

    Insects, Vol 14, Iss 563, p

    2023  Volume 563

    Abstract: Ctenolepisma calvum (Ritter, 1910) (Zygentoma: Lepismatidae) is a primitive wingless insect that causes damage to paper, and it is regarded as a pest of collections in museums, archives, and libraries. This species was recently discovered in Japan for ... ...

    Abstract Ctenolepisma calvum (Ritter, 1910) (Zygentoma: Lepismatidae) is a primitive wingless insect that causes damage to paper, and it is regarded as a pest of collections in museums, archives, and libraries. This species was recently discovered in Japan for the first time and may have already spread over large areas of Japan, but, currently, no information is available on the biological characteristics of C. calvum in Japan. In this study, we observed the processes of development and reproduction of C. calvum found in Japan at room temperature. Oviposition was observed from April to November, with a peak in early June. The average egg period was 56.9 days at average temperatures above 24.0 °C, and was 72.4 days at average temperatures below 24.0 °C. The 1st, 2nd, and 3rd instars lasted 4.7 days, 13.2 days, and 26.1 days on average, respectively, at average temperatures above 22.0 °C. Average instar periods were 23–28 days in 4th–7th instars and tended to increase in later instars. Instar periods also increased when the average temperature was 22.0 °C or lower. In individual rearing, the longest-living individual lived for approximately two years, up to the 15th instar. The head width grew at an approximate ratio of 1.1 per molt. First oviposition occurred at the 10th or 11th instar. Individually observed females oviposited once or twice a year, laying 6–16 eggs at one time, but females at least two years old laid 78.2 eggs per year on average in a mass-culture cage. Through this study, only females were found, and the mature females produced their progenies parthenogenetically.
    Keywords Ctenolepisma calvum ; Lepismatidae ; insect development ; head width ; reproduction ; museum pests ; Science ; Q
    Subject code 590
    Language English
    Publishing date 2023-06-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: New records of Ctenolepisma calvum (Ritter,1910) (Zygentoma, Lepismatidae) from Japan

    Megumi Shimada / Hiroki Watanabe / Yukio Komine / Rika Kigawa / Yoshinori Sato

    Biodiversity Data Journal, Vol 10, Iss , Pp 1-

    2022  Volume 10

    Abstract: Silverfish are known as one of the major pests which feed on paper and starch-based materials and can cause serious problems in museums, libraries and archives.Ctenolepisma calvum (Ritter, 1910) was first recorded from Ceylon (now Sri Lanka) and has also ...

    Abstract Silverfish are known as one of the major pests which feed on paper and starch-based materials and can cause serious problems in museums, libraries and archives.Ctenolepisma calvum (Ritter, 1910) was first recorded from Ceylon (now Sri Lanka) and has also been known from Central American countries including Guyana and Cuba. Recently, its rapid spread to European countries, including Austria, Czech, Germany and Norway, has been reported. In addition, there are unverified records of C. calvum from 17 more countries in the on-line citizen-science platforms iNaturalist.We report C. calvum in Japan for the first time, from Hokkaido, Miyagi, Tokyo, Fukuoka and Nagasaki Prefectures. The specimens in Japan were observed in detail by stereomicroscope, optical microscope and scanning electron microscope. The occurrence of this species is a serious problem from the viewpoint of protection of cultural properties. We also registered their mitochondrial cytochrome oxidase I (COI) gene in EMBL/GenBank/DDBJ.
    Keywords Ctenolepisma calvum ; Japan ; COI ; EMBL/GenBa ; Biology (General) ; QH301-705.5
    Subject code 950
    Language English
    Publishing date 2022-11-01T00:00:00Z
    Publisher Pensoft Publishers
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article: Two new Cladophialophora species, C. tumbae sp. nov. and C. tumulicola sp. nov., and chaetothyrialean fungi from biodeteriorated samples in the Takamatsuzuka and Kitora Tumuli

    Kiyuna, Tomohiko / Chie Sano / Junta Sugiyama / Kwang-Deuk An / Rika Kigawa

    The Mycological Society of Japan Mycoscience. 2018 Jan., v. 59, no. 1

    2018  

    Abstract: During dismantling and relocation of the Takamatsuzuka Tumulus stone chamber, many Cladophialophora and chaetothyrialean black fungi, such as Exophiala and Phialophora, were isolated from samples taken from the joints between the stone walls. However, ... ...

    Abstract During dismantling and relocation of the Takamatsuzuka Tumulus stone chamber, many Cladophialophora and chaetothyrialean black fungi, such as Exophiala and Phialophora, were isolated from samples taken from the joints between the stone walls. However, inside the stone chamber of the Kitora Tumulus, after intermittent UV irradiation in 2009, these black fungi were also isolated from samples taken from the stone walls. Molecular phylogenetic analyses based on only nrLSU and the concatenated (nrLSU D1/D2 + ITS) sequences revealed that the 35 Takamatsuzuka and Kitora Tumuli isolates of Cladophialophora and the chaetothyrialean black fungi were divergent. Two new species of Cladophialophora are described herein: C. tumulicola from the viscous gels and various substrates on the stone walls of the Takamatsuzuka and Kitora Tumuli and C. tumbae from black substances on the plastic cover over the “thief hole,” soil and plaster pieces between the stone walls, and the exterior of the Takamatsuzuka Tumulus chamber. Also, molecular phylogenetic placements for the remaining eight Takamatsuzuka and Kitora Tumuli isolates of chaetothyrialean black fungi have been determined or suggested.
    Keywords Exophiala ; fungi ; gels ; internal transcribed spacers ; new species ; Phialophora ; phylogeny ; plaster ; soil ; ultraviolet radiation
    Language English
    Dates of publication 2018-01
    Size p. 75-84.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 1285813-4
    ISSN 1618-2545 ; 1340-3540
    ISSN (online) 1618-2545
    ISSN 1340-3540
    DOI 10.1016/j.myc.2017.08.008
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Microbial deterioration of tsunami-affected paper-based objects: A case study

    Sato, Yoshinori / Mutsumi Aoki / Rika Kigawa

    International Biodeterioration & Biodegradation. 2014 Mar., v. 88

    2014  

    Abstract: Huge numbers of cultural objects were damaged by microorganisms after having been soaked with seawater from the tsunami that followed the Great East Japan Earthquake on March 11, 2011. Among the cultural objects that were damaged, paper-based objects in ... ...

    Abstract Huge numbers of cultural objects were damaged by microorganisms after having been soaked with seawater from the tsunami that followed the Great East Japan Earthquake on March 11, 2011. Among the cultural objects that were damaged, paper-based objects in the tsunami area were severely affected. In the present study, a culture-based analysis and on-site investigations were carried out to determine the extent of the microbial deterioration of paper-based objects (i.e., administrative documents and historical documents). Dark-colored fungi were isolated from black-spotted paper as Stachybotrys chartarum, which was observed to grow significantly in mineral salt medium supplemented with cellulose as the sole nutrient source; growth was shown in 10% NaCl. Two isolates from light red-spotted paper were related to Streptomyces sp. and Myxotrichum sp., respectively. These isolates generated red pigments in the mycelia and on the culture plates. Penicillium-related isolates were dominant in the sample tested, and they showed a higher level of NaCl tolerance. From the results of our on-site investigations, a unique discoloration, mainly black- and light red-spotted alterations caused by microbes, was observed on many paper-based objects that had been left wet for several months. The adhesive tape method applied to the black-spotted and red-spotted areas on damaged documents, Stachybotrys, Chaetomium and Cladosporium, and Actinomycetales bacterium were observed, respectively. With regard to the discoloration found on tsunami-affected paper-based objects, Stachybotrys and Streptomyces sp. seem to be responsible for the black- and red-spotted paper alterations, respectively.
    Keywords bacteria ; case studies ; cellulose ; Chaetomium ; Cladosporium ; color ; discoloration ; earthquakes ; fungi ; mycelium ; Myxotrichum ; paper ; pigments ; salt tolerance ; seawater ; sodium chloride ; Stachybotrys chartarum ; Streptomyces ; tsunamis ; Japan
    Language English
    Dates of publication 2014-03
    Size p. 142-149.
    Publishing place Elsevier Ltd
    Document type Article
    ISSN 0964-8305
    DOI 10.1016/j.ibiod.2013.12.007
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  5. Article: Noteworthy anamorphic fungi, Cephalotrichum verrucisporum, Sagenomella striatispora, and Sagenomella griseoviridis, isolated from biodeteriorated samples in the Takamatsuzuka and Kitora Tumuli, Nara, Japan

    Kiyuna, Tomohiko / Chie Sano / Junta Sugiyama / Kwang-Deuk An / Rika Kigawa

    The Mycological Society of Japan Mycoscience. 2017 Sept., v. 58, no. 5

    2017  

    Abstract: Phenotypic and genotypic characteristics of five isolates of Cephalotrichum and Sagenomella from various samples collected while dismantling the Takamatsuzuka Tumulus stone chamber were found to represent Cephalotrichum verrucisporum and Sagenomella ... ...

    Abstract Phenotypic and genotypic characteristics of five isolates of Cephalotrichum and Sagenomella from various samples collected while dismantling the Takamatsuzuka Tumulus stone chamber were found to represent Cephalotrichum verrucisporum and Sagenomella striatispora. In addition to these, one isolate from the ceiling stone surface in the adjacent small room of the Kitora Tumulus was assignable to Sagenomella griseoviridis. Colonization on biodeteriorated plaster and stone walls as substrata or habitats of these fungi is noteworthy. Physiologically Sagenomella isolates solubilized CaCO3 and may be involved in the deterioration of the plaster walls inside the stone chamber. Cephalotrichum verrucisporum is a new addition to Japan.
    Keywords anamorphs ; calcium carbonate ; fungi ; habitats ; inventories ; phenotype ; plaster ; solubilization ; villages ; Japan
    Language English
    Dates of publication 2017-09
    Size p. 320-327.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 1285813-4
    ISSN 1618-2545 ; 1340-3540
    ISSN (online) 1618-2545
    ISSN 1340-3540
    DOI 10.1016/j.myc.2017.02.003
    Database NAL-Catalogue (AGRICOLA)

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  6. Article: Prototheca tumulicola sp. nov., a novel achlorophyllous, yeast-like microalga isolated from the stone chamber interior of the Takamatsuzuka Tumulus

    Nagatsuka, Yuka / Chie Sano / Junta Sugiyama / Rika Kigawa / Tomohiko Kiyuna

    The Mycological Society of Japan Mycoscience. 2017 Jan., v. 58, no. 1

    2017  

    Abstract: Two achlorophyllous microalgal strains were isolated from the soil and white moldy colony collected inside the stone chamber of the Takamatsuzuka Tumulus in Japan. Phylogenetic analyses of the small subunit ribosomal RNA (SSU rRNA) and Dl/D2 large ... ...

    Abstract Two achlorophyllous microalgal strains were isolated from the soil and white moldy colony collected inside the stone chamber of the Takamatsuzuka Tumulus in Japan. Phylogenetic analyses of the small subunit ribosomal RNA (SSU rRNA) and Dl/D2 large subunit ribosomal RNA (LSU rRNA) gene sequences, and concatenated gene sequences of the SSU and D1/D2 LSU rRNA genes indicated that our two isolates were the members of the non-photosynthetic, yeast-like microalgal Chlorellaceous genus Prototheca (Chlorellales, Trebouxiophyceae, Chlorophyta) but well distinguished from known species. Based on phenotypic and genotypic characteristics, isolates T6713-13-10T and T61213-7-11 are proposed to represent a novel species in Prototheca, P. tumulicola, with the type strain JCM 31123T (isolate T6713-13-10T).
    Keywords genes ; microalgae ; new species ; nucleotide sequences ; phenotype ; phylogeny ; Prototheca ; ribosomal RNA ; soil ; Japan
    Language English
    Dates of publication 2017-01
    Size p. 53-59.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 1285813-4
    ISSN 1618-2545 ; 1340-3540
    ISSN (online) 1618-2545
    ISSN 1340-3540
    DOI 10.1016/j.myc.2016.09.005
    Database NAL-Catalogue (AGRICOLA)

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  7. Article: “Black particles”, the major colonizers on the ceiling stone of the stone chamber interior of the Kitora Tumulus, Japan, are the bulbilliferous basidiomycete fungus Burgoa anomala

    Kiyuna, Tomohiko / Chie Sano / Junta Sugiyama / Kwang-Deuk An / Rika Kigawa / Sadatoshi Miura

    The Mycological Society of Japan Mycoscience. 2015 May, v. 56, no. 3

    2015  

    Abstract: Integrated analysis of phenotypic and genotypic characteristics of 20 isolates of “black particles” (“Kuro-tsubu” in Japanese), that mainly appeared on the plaster wall of the ceiling tuff stone surface of the Kitora Tumulus stone chamber interior in ... ...

    Abstract Integrated analysis of phenotypic and genotypic characteristics of 20 isolates of “black particles” (“Kuro-tsubu” in Japanese), that mainly appeared on the plaster wall of the ceiling tuff stone surface of the Kitora Tumulus stone chamber interior in Asuka village, Nara, Japan, has identified them as the bulbilliferous basidiomycetous anamorphic fungus Burgoa anomala. Our 28S rRNA gene D1/D2 (28S) and internal transcribed spacer (ITS) regions sequence-based phylogenies indicated that the 20 isolates displayed no genetic divergence and firmly clustered with the authentic strain B. anomala CBS 130.38. These isolates and B. anomala CBS 130.38 grouped together with species of the teleomorphic genus Sistotrema and its allies in the Cantharelloid clade. Colonization of biodeteriorated murals, plaster, and stone walls as the substrata or habitats by this fungus colonized, are noteworthy. Additionally, B. anomala is recorded for the first time from Japan.
    Keywords anamorphs ; fungi ; genes ; genetic variation ; habitats ; internal transcribed spacers ; phenotype ; phylogeny ; plaster ; ribosomal RNA ; Sistotrema ; teleomorphs ; transcription (genetics) ; tuff ; villages ; Japan
    Language English
    Dates of publication 2015-05
    Size p. 293-300.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 1285813-4
    ISSN 1618-2545 ; 1340-3540
    ISSN (online) 1618-2545
    ISSN 1340-3540
    DOI 10.1016/j.myc.2014.08.005
    Database NAL-Catalogue (AGRICOLA)

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