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Anodontia

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Emily A Glover – 1st expert on this subject based on the ideXlab platform

  • ctenidial structure and three bacterial symbiont morphotypes in Anodontia euAnodontia ovum reeve 1850 from the great barrier reef australia bivalvia lucinidae
    Journal of Molluscan Studies, 2009
    Co-Authors: Alexander Ball, Emily A Glover, Kevin J Purdy, John D Taylor

    Abstract:

    The structure of the ctenidia of the Indo-West Pacific chemosymbiotic lucinid bivalve Anodontia (EuAnodontia) ovum was investigated by electron microscopy. Ctenidial filaments are similar in general morphology to those described from other Lucinidae, with a ciliated zone, a short intermediary zone and a thick abfrontal zone composed largely of bacteriocytes separated by narrow intercalary cells. The bacteriocyte zones of adjacent filaments are fused in the distal part to form short cylindrical channels. The apices of intercalary cells project as cytoplasmic protrusions in the form of spiky tufts, with sheets and tendrils spreading over adjacent bacteriocytes. Compared with other lucinids A. ovum lacks abfrontal granule cells, mucocytes are infrequent and the bacteriocyte channels are short. Three morphotypes of symbiotic bacteria were detected, associated with the bacteriocyte zone of the ctenidial filaments: (1) all bacteriocytes contained abundant bacteria 3-5 mu m long and 0.5-1.0 mu m wide, enclosed in single vacuoles; (2) some bacteriocytes possessed spherical vesicles enclosing masses of smaller rod-shaped bacteria c. 1.0 mu m long; (3) probable spirochaete bacteria, 8-10 mu m long and 0.3 mu m wide, were abundant within the apical cytoplasmic protrusions of the intercalary cells. Preliminary molecular analysis using 16S rRNA gene sequences has so far identified only one bacterial symbiont, from the gamma division of Proteobacteria grouping in a cluster of symbiotic thiotrophs. This symbiont of A. ovum is closely similar to a symbiont previously reported from the western Atlantic lucinid Anodontia schrammi (originally cited as A. philippiana).

  • cryptic diversity of chemosymbiotic bivalves a systematic revision of worldwide Anodontia mollusca bivalvia lucinidae
    Systematics and Biodiversity, 2005
    Co-Authors: John D Taylor, Emily A Glover

    Abstract:

    Abstract Marine bivalves of the family Lucinidae possess a likely obligate chemosymbiosis with sulphide‐oxidising bacteria from which they derive much of their nutrition. Molecular analysis has shown that species of the ’Anodontia’ group form a distinct clade within the monophyletic Lucinidae. Species identification of the largely tropical ’Anodontia’ group, has been confused because of the white, sub‐spherical, smooth, toothless shells, with the name Anodontia edentula used uncritically for most Indo‐West Pacific species. Preliminary morphological analysis also showed that the group was much more diverse than previously realised. The present systematic revision of the world Anodontia species, based on museum collections, field sampling, anatomical and molecular data, now recognises 25 species (eight of these new). These species are divided into eight subgenera (four of these, EuAnodontia, Afrophysema, Crytophysema and Bythosphaera are new) on the basis of shell morphology, corroborated by some molecular …

V Subba V Reddy – 2nd expert on this subject based on the ideXlab platform

  • hypohidrotic ectodermal dysplasia with total Anodontia a case report
    Journal of Clinical and Experimental Dentistry, 2011
    Co-Authors: K K Shashibhushan, Revathy Viswanathan, Sathyajith N Naik, V Subba V Reddy

    Abstract:

    Ectodermal dysplasia is a hereditary disorder that occurs as a consequence of disturbances in the ectoderm of the developing embryo. The triad of nail dystrophy, alopecia or hypotrichosis and palmoplantar hyperkeratosis is usually accompanied by a lack of sweat glands and a partial or complete absence of primary and/ or permanent dentition. A case report illustrating the prosthetic rehabilitation of a seven year old boy with hypohidrotic ectodermal dysplasia associated with total Anodontia is presented.

Rochmady Rochmady – 3rd expert on this subject based on the ideXlab platform

  • nisbah kelamin dan ukuran pertama matang gonad kerang lumpur Anodontia edentula linnaeus 1758 di pesisir pulau buton kecamatan wakorumba kabupaten muna
    Agrikan: Jurnal Ilmiah Agribisnis dan Perikanan, 2014
    Co-Authors: Rochmady Rochmady, Abdul Rakhfid

    Abstract:

    Penelitian dilakukan di pesisir Pulau Buton Kecamatan Wakorumba Kabupaten Muna dengan tujuan untuk menganalisis nisbah kelamin dan ukuran pertama matang gonad kerang lumpur. Data nisbah kelamin dianalisis menggunakan Metode Chi-square (X2) dan ukuran pertama matang gonad dianalisis menggunakan Metode Spearmen-Karber (Udupa, 1986). Nisbah kelamin kerang lumpur Anodontia edentula Linnaeus, 1758 berdasarkan waktu pengambilan sampel berada pada proporsi seimbang (nilai X2 19,6447>4,3027), sementara menurut stasiun pengamatan (plot) berada pada proporsi yang tidak seimbang dimana jenis jantan lebih banyak dibanding jenis betina (nilai X2 0,7185>4,3027). Ukuran pertama matang gonad kerang lumpur Anodontia edentula Linnaeus, 1758 jenis kelamin jantan memiliki rata-rata panjang cangkang sebesar 38,60 mm (38,14-39,06 mm), sementara jenis kelamin betina mencapai rata-rata panjang cangkang sebesar 34,14 mm (33,56-34,73 mm). Kerang lumpur di pesisir Pulau Buton, ukuran pertama matang gonad sebenarnya untuk jenis kelamin jantan sebesar 39,7 mm dan jenis kelamin betina sebesar 38,0 mm.

  • nisbah kelamin dan ukuran pertama matang gonad kerang lumpur Anodontia edentula linnaeus 1758 di pesisir pulau buton kecamatan wakorumba kabupaten muna sex ratio and first size gonad mature mudclams Anodontia edentula linnaeus 1758 in the soast of bu
    , 2014
    Co-Authors: Rochmady Rochmady, Dan Rakhfid

    Abstract:

    Indonesian Abstract: Penelitian dilakukan di pesisir Pulau Buton Kecamatan Wakorumba Kabupaten Muna dengan tujuan untuk menganalisis nisbah kelamin dan ukuran pertama matang gonad kerang lumpur. Data nisbah kelamin dianalisis menggunakan Metode Chi-square (X2) dan ukuran pertama matang gonad dianalisis menggunakan Metode Spearmen-Karber (Udupa, 1986). Nisbah kelamin kerang lumpur Anodontia edentula Linnaeus, 1758 berdasarkan waktu pengambilan sampel berada pada proporsi seimbang (nilai X2 19,6447>4,3027), sementara menurut stasiun pengamatan (plot) berada pada proporsi yang tidak seimbang dimana jenis jantan lebih banyak dibanding jenis betina (nilai X2 0,7185>4,3027). Ukuran pertama matang gonad kerang lumpur Anodontia edentula Linnaeus, 1758 jenis kelamin jantan memiliki rata-rata panjang cangkang sebesar 38,60mm (38,14-39,06 mm), sementara jenis kelamin betina mencapai rata-rata panjang cangkang sebesar 34,14mm (33,56-34,73 mm). Kerang lumpur di pesisir Pulau Buton, ukuran pertama matang gonad sebenarnya untuk jenis kelamin jantan sebesar 39,7 mm dan jenis kelamin betina sebesar 38,0 mm.
    English Abstract: The study was conducted on the coast of Buton Island District Wakorumba Muna Regency with the aim to analyze the sex ratio and the first size of mature mud gonad shells. The sex ratio data were analyzed using Chi-square Method (X2) and the first size of ripe gonads were analyzed using the Spearmen-Karber Method (Udupa, 1986). The sex ratio of Anodontia edentula Linnaeus mud shell, 1758 based on sampling time was in proportional proportion (X2 value 19,6447> 4,3027), while according to station observation (plot) was in unbalanced proportion where more males than females (Value X2 0.7185> 4.3027). The first size of mature gonads of Anodontia edentula Linnaeus mud oyster, 1758 male sexes had an average shell length of 38.60mm (38.14-39.06 mm), while the female gender reached an average shell length of 34.14mm ( 33.56-34.73 mm). Mussel shells on the coast of Buton Island, the first size of true gonad for male sex of 39.7 mm and female gender of 38.0 mm.