scholarly journals Electrical Collection of Membrane-intact and Dehydrogenase-positive Symbiotic Bacteria from the Deep-sea Bivalve Calyptogena Okutanii

2016 ◽  
Vol 84 (5) ◽  
pp. 358-360 ◽  
Author(s):  
Sumihiro KOYAMA ◽  
Takao YOSHIDA
Keyword(s):  
Deep Sea ◽  
Symbiotic Bacteria

The escal light gland of the deep-sea anglerfish Haplophryne mollis (Pisces: Ceratioidei) with observations on luminescence control

1994 ◽  
Vol 74 (4) ◽  
pp. 747-763 ◽  
Author(s):  
Peter J. Herring ◽  
Ole Munk
Keyword(s):  
Deep Sea ◽  
Light Emission ◽  
Light And Electron Microscopy ◽  
Symbiotic Bacteria ◽  
Uniform Structure ◽  
Basal Cells ◽  
Bacterial Luciferase ◽  
The Right

The escal light gland of three different-sized specimens of the deep-sea anglerfish Haplophryne mollis (family Linophrynidae) has been examined by light and electron microscopy. The light gland has a central cavity, with diverging branched ducts which ramify into numerous tightly-packed radial tubules. In the two largest specimens all glandular lumina contain symbiotic bacteria. Except for a thin-walled part of the typical radiating tubules, the epithelial walls of the light gland are of a uniform structure, consisting of flattened basal cells, situated next to the basal lamina, and tall cells extending to the lumen.In the smallest specimen examined the various parts of the light gland were not fully differentiated and only a very few symbiotic bacteria were present; its glandular epithelium differed from that of the two larger specimens by containing many goblet cells, the secretion of which may be important for the initial establishment of the right strain of symbiotic bacteriaObservations on the luminescence of live specimens have shown that the light emission can be rapidly modulated from within the esca. The in vivo flash kinetics are considerably slower than those of Dolopichthys longicornis, but similar to those of both the caruncle exudate of Ceratias holboelli and in vitro anglerfish bacterial luciferase.

scholarly journals Effects of Hemagglutination Activity in the Serum of a Deep-Sea Vent Endemic Crab, Shinkaia Crosnieri, on Non-Symbiotic and Symbiotic Bacteria

2015 ◽  
Vol 30 (3) ◽  
pp. 228-234 ◽  
Author(s):  
So Fujiyoshi ◽  
Hiroaki Tateno ◽  
Tomoo Watsuji ◽  
Hideyuki Yamaguchi ◽  
Daisuke Fukushima ◽  
...  
Keyword(s):  
Deep Sea ◽  
Symbiotic Bacteria ◽  
Hemagglutination Activity

Rhaptothyreus typicus Hope & Murphy, 1969 (Nematoda: Rhaptothyreidae): an anatomical study of an unusual deep-sea nematode

Nematology ◽  
2006 ◽  
Vol 8 (1) ◽  
pp. 1-20 ◽  
Author(s):  
Dmitry M. Miljutin ◽  
Alexei V. Tchesunov ◽  
Duane W. Hope
Keyword(s):  
Light Microscopy ◽  
Reproductive System ◽  
Deep Sea ◽  
Phylogenetic Relationships ◽  
Anatomical Study ◽  
Symbiotic Bacteria ◽  
Solid Mass ◽  
Oral Aperture ◽  
Anterior Circle

Abstract Descriptions are given for the males of Rhaptothyreus typicus, a morphologically unique and incompletely investigated deep-sea nematode, using light microscopy, TEM, and SEM. The cephalic sensilla are arranged in two circles: an anterior circle consisting of six pairs of papilliform sensilla and a posterior circle consisting of four papilliform sensilla. The fovea of the giant, oblong, amphid is covered with cuticle bearing minute perforations. The actual amphidial aperture, revealed only by TEM, is minute and slitlike. The apical oral aperture is reduced to a simple pore and the vestigial pharynx is devoid of an internal lumen and musculature. The mid-gut is a trophosome consisting of a solid mass of irregularly-shaped cells filled with rod-shaped structures that are assumed to be intracellular symbiotic bacteria. There is no evidence of even a vestige of a reproductive system except for the presence of the single spiculum. The phylogenetic relationships of Rhaptothyreus remain unknown.

scholarly journals Monoclonal antibodies that recognize symbiotic bacteria and hemocytes in the deep-sea vesicomyid clam Phreagena okutanii

2018 ◽  
Vol 26 (0) ◽  
pp. 75-83
Author(s):  
Kazue Ohishi ◽  
Yoshimitsu Nakamura ◽  
Chiho Kusaka ◽  
Yukiko Nagai ◽  
Masatoshi Nakazawa ◽  
...  
Keyword(s):  
Monoclonal Antibodies ◽  
Deep Sea ◽  
Symbiotic Bacteria ◽  
Vesicomyid Clam

scholarly journals Exclusive localization of carbonic anhydrase in bacteriocytes of the deep-sea clam Calyptogena okutanii with thioautotrophic symbiotic bacteria

2013 ◽  
Vol 216 (23) ◽  
pp. 4403-4414 ◽  
Author(s):  
Y. Hongo ◽  
Y. Nakamura ◽  
S. Shimamura ◽  
Y. Takaki ◽  
K. Uematsu ◽  
...  
Keyword(s):  
Carbonic Anhydrase ◽  
Deep Sea ◽  
Symbiotic Bacteria

scholarly journals Whole-mount fluorescence in situ hybridization to visualize symbiotic bacteria in the gills of deep‑sea mussels

2012 ◽  
Vol 14 (2) ◽  
pp. 135-140 ◽  
Author(s):  
M Fujinoki ◽  
T Koito ◽  
Y Fujiwara ◽  
M Kawato ◽  
Y Tada ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Fluorescence In Situ Hybridization ◽  
Deep Sea ◽  
Symbiotic Bacteria ◽  
Whole Mount

scholarly journals Endosymbionts escape dead hydrothermal vent tubeworms to enrich the free-living population

2015 ◽  
Vol 112 (36) ◽  
pp. 11300-11305 ◽  
Author(s):  
Julia Klose ◽  
Martin F. Polz ◽  
Michael Wagner ◽  
Mario P. Schimak ◽  
Sabine Gollner ◽  
...  
Keyword(s):  
Deep Sea ◽  
Hydrothermal Vent ◽  
Symbiotic Bacteria ◽  
Free Living ◽  
Rapid Turnover ◽  
Large Numbers ◽  
Limited Dispersal ◽  
In Situ Observations ◽  
Horizontal Acquisition

Theory predicts that horizontal acquisition of symbionts by plants and animals must be coupled to release and limited dispersal of symbionts for intergenerational persistence of mutualisms. For deep-sea hydrothermal vent tubeworms (Vestimentifera, Siboglinidae), it has been demonstrated that a few symbiotic bacteria infect aposymbiotic host larvae and grow in a newly formed organ, the trophosome. However, whether viable symbionts can be released to augment environmental populations has been doubtful, because (i) the adult worms lack obvious openings and (ii) the vast majority of symbionts has been regarded as terminally differentiated. Here we show experimentally that symbionts rapidly escape their hosts upon death and recruit to surfaces where they proliferate. Estimating symbiont release from our experiments taken together with well-known tubeworm density ranges, we suggest a few million to 1.5 billion symbionts seeding the environment upon death of a tubeworm clump. In situ observations show that such clumps have rapid turnover, suggesting that release of large numbers of symbionts may ensure effective dispersal to new sites followed by active larval colonization. Moreover, release of symbionts might enable adaptations that evolve within host individuals to spread within host populations and possibly to new environments.

scholarly journals Inside or out? Clonal thiotrophic symbiont populations occupy deep-sea mussel bacteriocytes with pathways connecting to the external environment

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Tetsuro Ikuta ◽  
Yuka Amari ◽  
Akihiro Tame ◽  
Yoshihiro Takaki ◽  
Miwako Tsuda ◽  
...  
Keyword(s):  
Deep Sea ◽  
Cellular Localization ◽  
External Environment ◽  
Cellular Level ◽  
Symbiotic Bacteria ◽  
Apical Surface ◽  
Almost All ◽  
Novel Model ◽  
Level Process ◽  
Symbiont Acquisition

AbstractDeep-sea Bathymodiolus mussels are generally thought to harbour chemosynthetic symbiotic bacteria in gill epithelial cells called bacteriocytes. However, previously observed openings at the apical surface of bacteriocytes have not been conclusively explained and investigated as to whether the Bathymodiolus symbiosis is intracellular or extracellular. In this study, we show that almost all the membranous chambers encompassing symbionts in a single bacteriocyte of Bathymodiolus septemdierum are interconnected and have pathways connecting to the external environment. Furthermore, the symbiont population colonising a single bacteriocyte is mostly clonal. This study hypothesises on a novel model of cellular localization at the interface between extra- and intracellular symbiosis, and the cellular-level process of symbiont acquisition in Bathymodiolus mussels.

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