Genomic and phylogenetic characterization of luminous bacteria symbiotic with the deep-sea fish Chlorophthalmus albatrossis (aulopiformes: Chlorophthalmidae)

Article Abstract:

A study was conducted to test the evolutionary relationships of bacteria isolated from the perirectal light organ of Chloropthamus albatrosis. The result demonstrates that luminous bacteria symbiotic with Chlorophthalmus albatrossis, together with certain other strains of luminous bacteria, form a clade, designated the kishitanii clade, that is related to but evolutionary distinct from Photobacterium phosphoreum.

author: Dunlap, Paul V., Ast, Jennifer C.
Genetic aspects, Albatrosses, Bacteria, Luminous, Luminous bacteria

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Unexpected mechanism of symbiont-induced reversal of insect sex: feminizing Wolbachia continuously acts on the butterfly Eurema hecabe during larval development

Article Abstract:

Larval insects are fed a Eurema hecabe antibiotic-containing diet beginning at different developmental stages until pupation to understand how and when Wolbachia endosymbiont feminizes genetically male insects. It is suggested that the sexually intermediate traits are caused by attenuated feminization due to suppression of the Wolbachia endosymbiont by the antibiotic treatment.

author: Fukatsu, Takema, Kageyama, Daisuke, Narita, Satoko, Nomura, Masashi
Physiological aspects, Genetically modified animals, Larval development

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Secondary intracellular symbiotic bacteria in aphids of the genus Yamatocallis (Homoptera: Aphididae: Drepanosiphinae)

Article Abstract:

A bacterium from the gamma-Proteobacteria has been found in aphids of the genus Yamatocallis that has been tentatively named Yamatocallis secondary mycetocyte symbiont (YSMS). It is found in cells surrounded by mycetocytes carrying the other symbiont, Buchnera. YSMS was probably acquired in the Miocene epoch of the Tertiary period, between 13 million and 26 million years ago.

author: Fukatsu, Takema
Endosymbiosis, Aphididae, Aphids

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subjects list: Research
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