title: Involvement of dietary salt in shaping bacterial communities in European sea bass (Dicentrarchus labrax).
abstract: Bacteria associated with the digestive tract of multicellular organisms have been shown to play a major role in their hosts' functioning. In fish, it has been proposed that food fermentation occurs inside the pyloric ceca, pouch like organs found in their digestive tract. However, this notion remains controversial. Furthermore, changes in pyloric cecal bacterial populations under different diets have yet to be demonstrated in fish. In this study, we explore the changes occurring in the bacterial community residing in the pyloric ceca of carnivorous fish fed different diets, which were shown to induce different growth rates. Our results revealed that different diets do indeed induce distinct bacterial compositions within the pyloric ceca. We found that, when salt was added to a low fish meal diet, the bacterial changes were accompanied by a significant enhancement in weight gain, hinting at a possible involvement of the bacterial community in energy harvest.
authors.affiliation: Department of Ruminant Sciences, Institute of Animal Science, Agricultural Research Organization, Bet-Dagan, Israel.
authors.forename: Haifeng
authors.initials: H
authors.lastname: Sun
authors.forename: Elie
authors.initials: E
authors.lastname: Jami
authors.forename: Sheenan
authors.initials: S
authors.lastname: Harpaz
authors.forename: Itzhak
authors.initials: I
authors.lastname: Mizrahi
mesh_terms: D000818:Animals; D018407:Bacterial Physiological Phenomena; D001492:Bass / Q000378:metabolism* / Q000382:microbiology*; D059013:Microbial Consortia; D011708:Pylorus / Q000378:metabolism* / Q000382:microbiology*; D017673:Sodium Chloride, Dietary / Q000378:metabolism*
chemical_list: D017673:Sodium Chloride, Dietary
references.citation: Environ Microbiol. 2011 Jun;13(6):1467-76
references.pmid: 21635673
references.citation: Appl Environ Microbiol. 2007 Jan;73(2):659-62
references.pmid: 17122397
references.citation: Nature. 2006 Dec 21;444(7122):1027-31
references.pmid: 17183312
references.citation: Science. 2008 Jun 20;320(5883):1647-51
references.pmid: 18497261
references.citation: Acta Physiol Scand Suppl. 1997;638:67-80
references.pmid: 9421581
references.citation: Proc Natl Acad Sci U S A. 2004 Nov 2;101(44):15718-23
references.pmid: 15505215
references.citation: Lipids. 2003 Jan;38(1):39-44
references.pmid: 12669818
references.citation: Nature. 2009 Jan 22;457(7228):480-4
references.pmid: 19043404
references.citation: Appl Environ Microbiol. 2001 Oct;67(10):4479-87
references.pmid: 11571146
references.citation: Lipids. 1994 Jul;29(7):527-8
references.pmid: 7968276
references.citation: Anaerobe. 2012 Jun;18(3):338-43
references.pmid: 22546373
references.citation: Future Microbiol. 2012 Jan;7(1):91-109
references.pmid: 22191449
references.citation: Proc Natl Acad Sci U S A. 2005 Aug 2;102(31):11070-5
references.pmid: 16033867
references.citation: Proc Natl Acad Sci U S A. 1986 Oct;83(20):8012-4
references.pmid: 3464017
references.citation: Microb Ecol. 2009 Apr;57(3):550-61
references.pmid: 18797955
references.citation: Appl Environ Microbiol. 1999 Oct;65(10):4630-6
references.pmid: 10508099
references.citation: Nature. 2006 Dec 21;444(7122):1022-3
references.pmid: 17183309
references.citation: Am J Physiol. 1987 Jan;252(1 Pt 1):G65-76
references.pmid: 3812690
references.citation: ISME J. 2011 Oct;5(10):1595-608
references.pmid: 21472014
references.citation: Anat Embryol (Berl). 1982 Sep;165(1):97-111
references.pmid: 7149278
references.citation: J Appl Microbiol. 2001 Feb;90(2):294-300
references.pmid: 11168733