Abstract
Under natural conditions, eukaryote cells may contain bacteria. Arthropods such as ticks, insects or mites are a group particularly favoured by the obligate intracellular bacteria. While arthropods are vectors for some of them, other bacteria inhabit invertebrate host cells having entered mutualistic interactions. Such endosymbionts dwell usually in the host cell vacuoles or cytoplasm but have been also reported from tick oocyte mitochondria. The microorganisms contribute to mitochondria degradation, but their colonies are not eliminated from the tick cells affected. So far, such bacteria have been detected in three research centres. The Italian centre has reported on results of microscope and molecular analyses, while the Polish centre published molecular data. The Danish centre registered a 16S rRNA gene fragment in GenBank. Independent comparisons of the 16S rRNA gene sequences, carried out in the Italian and Polish centres, confirmed that the nucleotide sequences of the Ixodes ricinus endosymbionts formed a single clade with certain non-identified tick bacterium species isolated from the tick Haemaphysalis wellingtoni. On the other hand, pathogenic species of the genera Anaplasma, Ehrlichia and Rickettsia detected in I. ricinus as well as symbionts of the genus Wolbachia present in Culex pipiens and Drosophila simulans have been placed at a different site on the phylogenetic tree.
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References
Baer JG (1952) Ecology of animal parasites, 2nd (edn). The University of Illinois Press, Urbana, IL
Beninati T, Lo N, Sacchi L, Genchi C, Noda H, Bandi C (2004) A novel alpha-proteobacterium resides in the mitochondria of ovarian cells of the ticks I. ricinus. Appl Environ Microbiol 70:2596–2602
De Puytorac P, Grain J (1972) Bactéries intramitochondriales et particularités de l’ultrastructure cytostomo-pharyngienne chez le Cilié Urotricha ovata Kalh. CR Soc Biol 4–5:604–607
Kimura M (1980) A simple method for estimating evolutionary rates of base substitutions through comparative studies of nucleotide sequences. J Mol Evol 16:111–120
Lewis D (1979) The detection of Rickettsia-like microorganism within the ovaries of female Ixodes ricinus ticks. Z Parasitenkd 59:295–298
Margulis L (1981) Symbiosis and Cell Evolution. Freeman, San Francisco, CA
Noda H, Munderloh UG, Kurtti TJ (1997) Endosymbionts of ticks and their relationship Wolbachia spp. and tick-borne pathogens of humans and animals. Appl Environ Microbiol 63:3926–3932
Rymaszewska A, Skotarczak B (2006) Evidence and molecular analysis of Rickettsia spp. from the tick Ixodes ricinus in Poland. Ekologija 2:44–50
Sacchi L, Bigliardi E, Corona S, Beninati T, Lo N, Franceschi A (2004) A symbiont of the tick Ixodes ricinus invades and consumes mitochondria in a mode similar to that of the parasitic bacterium Bdellovibrio bacteriovorus. Tissue Cell 36:43–53
Skarphédinsson S, Jensen PM, Kristiansen K (2005) Survey of tickborne infections in Denmark. Emerg Infect Dis 11:1055–1061
Southamer R, Breeuwer JAJ, Hurst GDD (1999) Wolbachia pipiens: microbial manipulator of arthropod reproduction. Annu Rev Microbiol 53:71–102
von Dohlen CD, Kohler S, Alsop ST, Mc Manus WR (2001) Mealybug β-proteobacterial endosymbionts contain γ-proteobacterial symbionts. Nature 412:433–435
Zhu Z, Aeschlimann A, Gern L (1992) Rickettsia-like microorganisms in the ovarian primordia of molting Ixodes ricinus (Acari: Ixodidae) larvae and nymphs. Ann Parasitol Hum Comp 67:99–110
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Rymaszewska, A. Symbiotic bacteria in oocyte and ovarian cell mitochondria of the tick Ixodes ricinus: biology and phylogenetic position. Parasitol Res 100, 917–920 (2007). https://doi.org/10.1007/s00436-006-0412-8
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DOI: https://doi.org/10.1007/s00436-006-0412-8