Symbioses between Worms and Bacteria in Shallow Marine Sediments
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Shallow marine sediments are of great importance for thecycling of carbon, nitrogen, sulfur and other elements of organicmatter. The degradation processes by which these elements arere-circulated are performed mainly by bacteria. Some of thesebacteria are involved in symbioses with tiny marine roundworms,i.e. nematodes, living inside their hosts as endosymbionts orattached to the worm cuticle, as ectosymbionts. In some cases thesymbiosis goes so far as the entire gut of the host is completelyreplaced by bacteria and consequently the worms live exclusively atthe expense of their symbionts. Moreover, considering that eachnematode host carries more than one million bacteria, and thatthese nematodes are abundant in sediments, their bacterialsymbionts play also a significant role in the cycling of carbon andsulfur. This book offers an insight into the structure, diversityand dynamics of microbial communities of marine sandy sediments andpresents new and exciting findings about specificity and identityof the endosymbionts of mouthless nematode Astomonema, and of theectosymbionts of gut-bearing nematodes, Leptonemella.
| Autor: | Musat, Niculina |
| Nakladatel: | VDM Verlag Dr. Müller |
| Rok vydání: | 2008 |
| Jazyk : | Angličtina |
| Vazba: | Paperback / softback |
| Počet stran: | 140 |
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