CR Biologies

Damien Olivier

Gilles Lepoint

Rosalia Aguilar-Medrano

Angel Humberto Ruvalcaba Díaz

Alberto Sánchez-González

Nicolas Sturaro

Ecomorphology, trophic niche, and distribution divergences of two common damselfishes in the Gulf of California

Edmundo González-Santillán

Marcial Antonio Galán-Sánchez

Laura Leticia Valdez-Velázquez

A new species of <i>Centruroides</i> (Scorpiones, Buthidae) from Colima, Mexico

Pascal Jouquet

Ajay Harit

Sougueh Cheik

Saran Traoré

Nicolas Bottinelli

258 Insects: Friends, foes, and models/Insectes : amis, ennemis et modèles / C. R. Biologies 342 (2020) 247–278
Disclosure of interest The author declares that she has no
competing interest.
References
[1] F. Müller, Ituna and Thyridia: A remarkable case of mimicry
in butterflies, Proc. Entomol. Soc. Lond. (1879), xx–xxix.
[2] M. Elias, M. Joron, Mimicry in Heliconius and Ithomiini but-
terflies: the profound consequences of an adaptation, Bio
Web of Conferences 4 (2015) 00008.
[3] M. McClure, C. Clerc, C. Desbois, A. Meichanetzoglou, M. Cau,
L. Bastin-Héline, et al., Why has transparency evolved in
aposematic butterflies? Insights from the largest radiation
of aposematic butterflies, the Ithomiini, Proc. Biol. Sci. 286
(2019) 20182769.
https://doi.org/10.1016/j.crvi.2019.09.010
Session III. Social insects and other
10
Supergene, sex and sociality
Laurent Keller
Faculté de biologie et médecine, Département d’écologie et
évolution, Groupe Keller, Lausanne University, CH-1015,
Lausanne, Switzerland
E-mail address: laurent.keller@unil.ch
Intraspecific variability in social organization is common, yet
the underlying causes are rarely known. I will show that the
existence of two divergent forms of social organization in six
ant species is under the control of a pair of heteromorphic
chromosomes that have many of the key properties of sex
chromosomes. In particular, this social chromosome contains
a large (13 megabases) region in which recombination is com-
pletely suppressed via three large inversions (Fig. 1). These
findings highlight how genomic rearrangements can maintain
divergent adaptive social phenotypes involving many genes
acting together by locally limiting recombination.
Fig. 1 Fine scale mapping and BAC-FISH analysis of social
chromosome.
Disclosure of interest The author declares that he has no com-
peting interest.
Further reading
T. Schwander, R. Libbrecht, & L. Keller. Supergenes and complex
phenotypes, Curr. Biol. 24 (2014) R288–R294.
J. Wang, Y. Wurm, M. Nipitwanttanaphon, O. Riba-Grognuz, Y.-
C. Huang, D. Shoemaker & L. Keller. A Y-like social chromosome
causes alternative colony organization in fire ants, Nature 493
(2013) 664-668.
A.C. LeBoeuf, R. Benton & L. Keller, The molecular basis of social
behavior: models, methods and advances, Curr. Opin. Neurobiol.
23 (2013) 3-10.
https://doi.org/10.1016/j.crvi.2019.09.011
11
Termites: Soil engineers for
ecological engineering
Pascal Jouquet1,∗, Ajay Harit2, Sougueh Cheik1,3,
Saran Traoré4, Nicolas Bottinelli 1,3
1 UMR iEES-Paris, Centre IRD, Bondy, France
2 School of Environmental Sciences, Mahatma Gandhi University,
Kottayam, Kerala, India
3 Soils and Fertilizers Research Institute, Dong Ngac, Tu Liem,
Hanoi, Vietnam
4 UFR-ST, Université Nazi Boni (UNB), Bobo, Burkina Faso
∗ Corresponding author.
E-mail address: pascal.jouquet@ird.fr (P. Jouquet)
This communication assesses advances in our knowledge of
the beneficial influences of termites on ecosystem functioning
and services. Termites are amongst the main macroinverte-
brate decomposers in arid and semi-arid environments and
exert additional impacts through the creation of biostructures
(mounds, galleries, sheetings, etc.) with different soil physical
and chemical properties. Unfortunately, the positive ‘or bright’
role of termites is often overshadowed by their dark side, i.e.
their status as pests threatening agriculture in the tropics (635
vs. 164 articles referenced in WoS with termites and either pest
or ecosystem engineer as keywords. Source: WoS, April 2019).
Termite impacts on soil properties and water dynamics can
be differentiated at four different scales: (i) at the landscape
scale, where termites act as heterogeneity drivers; (ii) at the
soil profile scale, where termites act as soil bioturbators; (iii) at
the aggregate scale, where they act as aggregate reorganizers;
(iv) and last, at the clay mineral scale, where they can act as
weathering agents [1].
In this communication, two examples of ecosystem services
provided by termites are given.
The first describes the positive impact of termites on water
infiltration and nutrient guidance at small scale through the
production of foraging galleries in soil [2] and how this activity
can be used to improve agro-ecosystem functioning in arid and
semi-arid environments [3].
The second example deals with the construction of mounds and
sheeting by termites in “natural” environments [4] and how
these “patches of biodiversity and fertility” can be used in the
lower Mekong Basin to reduce food insecurity and to provide a
better access to health [5] (Fig. 1).
Finally, the perception of termite mounds in Southern Indian
rural environments (Fig. 2) is discussed and used as example
of the cultural services that can be provided by termites in
some circumstances. The story of Valmiki, the author of the
Ramayana, is explained and used as a parable for highlighting
the interconnection between the “bright” and “dark” sides of
termites, and more generally that to get the bright we also need
the dark.


Termites: Soil engineers for ecological engineering

Harshal S. Bhosale

Gaurang G. Gowande

Zeeshan A. Mirza

A new species of fossorial natricid snakes of the genus <i>Trachischium</i> Günther, 1858 (Serpentes: Natricidae) from the Himalayas of northeastern India

CV2 - Editorial Board/Français

Philippe Lherminier

La prédation informative : vers un nouveau concept d’espèce

Karina Bivar Xavier

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C. R. Biologies 341 (2018) 300
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16ratum
acterial interspecies quorum sensing in the mammalian gut
icrobiota [C. R. Biologies 341 (2018) https://doi.org/
0.1016/j.crvi.2018.03.006]
arina Bivar Xavier
tituto Gulbenkian de Ciência, Oeiras, Portugal
ailable online 21 May 2018
In the paper entitled ‘‘Bacterial interspecies quorum
nsing in the mammalian gut microbiota’’, published in
mptes rendus Biologies, the primary literature was not
operly cited in following sentence:
‘‘Since its discovery, many studies have shown that AI-2
gulates a variety of behaviours which are typically
gulated by quorum sensing such as bioluminescence in
brio harveyi, biofilm formation and virulence in Vibrio
olerae, formation of oral biofilms in Streptococcus
rdonii, phage dispersal in Enterococcus faecalis, and
otility and cell aggregation in Escherichia coli [7–9].’’
The sentence with the proper citations should read as
llows:
‘‘Since its discovery, many studies have shown that AI-2
gulates a variety of behaviours which are typically
gulated by quorum sensing such as bioluminescence in
brio harveyi [1,2], biofilm formation and virulence in
brio cholerae [3–5], formation of oral biofilms in
reptococcus gordonii [6–8], phage dispersal in Enterococ-
s faecalis [9], and motility and cell aggregation in
cherichia coli [10–14], reviewed in [15].’’
ferences
] B.L. Bassler, M. Wright, R.E. Showalter, M.R. Silverman, Intercellular
signalling in Vibrio harveyi: sequence and function of genes regulating
expression of luminescence, Mol. Microbiol. 9 (1993) 773–786.
] B.L. Bassler, M. Wright, M.R. Silverman, Multiple signalling systems
controlling expression of luminescence in Vibrio harveyi: sequence and
function of genes encoding a second sensory pathway, Mol. Microbiol.
13 (1994) 273–286.
] M.B. Miller, K. Skorupski, D.H. Lenz, R.K. Taylor, B.L. Bassler, Parallel
quorum sensing systems converge to regulate virulence in Vibrio
cholerae, Cell 110 (2002) 303–314.
[4] J. Zhu, M.B. Miller, R.E. Vance, M. Dziejman, B.L. Bassler, J.J. Mekalanos,
Quorum-sensing regulators control virulence gene expression in Vibrio
cholerae, Proc. Natl. Acad. Sci. USA 99 (2002) 3129–3134.
[5] B.K. Hammer, B.L. Bassler, Quorum sensing controls biofilm formation
in Vibrio cholerae, Mol. Microbiol. 50 (2003) 101–104.
[6] R. McNab, S.K. Ford, A. El-Sabaeny, B. Barbieri, G.S. Cook, R.J. Lamont,
LuxS-based signaling in Streptococcus gordonii: autoinducer-2 controls
carbohydrate metabolism and biofilm formation with Porphyromonas
gingivalis, J. Bacteriol. 185 (2003) 274–284.
[7] G.C. Saenz, D. Rao, A. Underwood, S.A. Belapure, S.R. Campagna, Z. Sun,
S. Tammariello, A.H. Rickard, Autoinducer-2 influences interactions
amongst pioneer colonizing streptococci in oral biofilms, Microbiology
158 (2012) 1783–1795. , http://dx.doi.org/10.1099/mic.0.057182-0.
[8] X. Wang, X. Li, J. Ling, Streptococcus gordonii LuxS/autoinducer-2 quo-
rum-sensing system modulates the dual-species biofilm formation
with Streptococcus mutans, J. Basic Microbiol. 57 (2017) 605–616.
[9] F.S. Rossmann, T. Racek, D. Wobser, J. Puchalka, E.M. Rabener, M. Reiger,
A.P. Hendrickx, A.K. Diederich, K. Jung, C. Klein, J. Huebner, Phage-
mediated dispersal of biofilm and distribution of bacterial virulence
genes is induced by quorum sensing, PLoS Pathog. 11 (2) (2015)
e1004653.
[10] A.F. Gonzalez Barrios, R. Zuo, Y. Hashimoto, L. Yang, W.E. Bentley, T.K.
Wood, Autoinducer 2 controls biofilm formation in Escherichia coli
through a novel motility quorum-sensing regulator (MqsR, B3022), J.
Bacteriol. 188 (2006) 305–316.
[11] T. Bansal, P. Jesudhasan, S. Pillai, T.K. Wood, A. Jayaraman, Temporal
regulation of enterohemorrhagic Escherichia coli virulence mediated by
autoinducer-2, Appl. Microbiol. Biotechnol. 78 (2008) 811–819.
[12] M. Hegde, D.L. Englert, S. Schrock, W.B. Cohn, C. Vogt, T.K. Wood, M.D.
Manson, A. Jayaraman, Chemotaxis to the quorum-sensing signal AI-2
requires the Tsr chemoreceptor and the periplasmic LsrB AI-2-binding
protein, J. Bacteriol. 193 (2011) 768–773.
[13] L. Laganenka, R. Colin, V. Sourjik, Chemotaxis towards autoinducer
2 mediates autoaggregation in Escherichia coli, Nat. Commun. 7 (2016)
12984.
[14] S. Jani, A.L. Seely, V.G.L. Peabody, A. Jayaraman, M.D. Manson, Chemo-
taxis to self-generated AI-2 promotes biofilm formation in Escherichia
coli, Microbiology 163 (2017) 1778–1790. , http://dx.doi.org/10.1099/
mic.0.000567.
[15] C.S. Pereira, J.A. Thompson, K.B. Xavier, AI-2-mediated signalling in
bacteria, FEMS Microbiol. Rev. 37 (2013) 156–181.
DOI of original article: https://doi.org/10.1016/j.crvi.2018.03.006
Email address: kxavier@igc.gulbenkian.pt.
Contents lists available at ScienceDirect
Comptes Rendus Biologies
w ww.s c ien ced i rec t . c o m
ps://doi.org/10.1016/j.crvi.2018.04.00431-0691/C 2018 Published by Elsevier Masson SAS on behalf of Académie des sciences.


Bacterial interspecies quorum sensing in the mammalian gut microbiota

Bacterial interspecies quorum sensing in the mammalian gut microbiota [C. R. Biologies 341 (2018) https://doi.org/10.1016/j.crvi.2018.03.006]

Krystyna Makowska

Liliana Rytel

Piotr Lech

Adam Osowski

Ewa Kruminis-Kaszkiel

Slawomir Gonkowski

Cocaine- and amphetamine-regulated transcript (CART) peptide in the enteric nervous system of the porcine esophagus

Fatima Nouayti

Abdessalem Tahiri

Ilham Madani

Abdelali Blenzar

Rachid Lahlali

Comparison of RNA extraction methods for the detection of BNYVV rhizomania virus from roots of sugar beet

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