1,689 results match your criteria Comptes Rendus Biologies[Journal]


Aromatase immunolocalization and activity in the lizard's brain: Dynamic changes during the reproductive cycle.

C R Biol 2019 Jan 29. Epub 2019 Jan 29.

Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università degli Studi della Campania "L. Vanvitelli", Caserta, Italy.

The purpose of the present study is to highlight the role of aromatase in the neuroendocrine control of the reproductive cycle of the male lizard Podarcis sicula during the three significant phases, i.e. the pre-reproductive, reproductive, and post-reproductive stages. Read More

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http://dx.doi.org/10.1016/j.crvi.2019.01.002DOI Listing
January 2019
1 Read

Adrenal cortex disorders in a new model of obesity, Gerbillus gerbillus, exposed to a high carbohydrate diet.

C R Biol 2019 Jan 24. Epub 2019 Jan 24.

LBPO/Nutrition-métabolisme, FSB/USTHB, BP 32, El Alia, 16111 Alger, Algeria.

Obesity is associated with several endocrine disorders, including hypersensitivity of the hypothalamic-pituitary-adrenal axis. The aim of this study was to investigate the effects of a high carbohydrate diet on structural and ultrastructural features of steroidogenic tissue, as well to evaluate adrenocorticotropic hormone (ACTH), cortisol, and insulin levels in the blood and steroidogenic acute regulatory protein (StAR) expression in the adrenals of gerbils. In electron microscopy, the most pronounced effect of the hypercaloric diet was observed in the zona fasciculata. Read More

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http://dx.doi.org/10.1016/j.crvi.2019.01.001DOI Listing
January 2019
1 Read

The cave population of Chaerilus Simon, 1877 from Palawan, Philippines, and description of a new species (Scorpiones: Chaerilidae).

C R Biol 2018 Dec 27. Epub 2018 Dec 27.

Museo di Storia Naturale dell'Università di Firenze, Sezione di Zoologia "La Specola", Dipartimento di Entomologia, via Romana 17, 50125 Florence, Italy. Electronic address:

The study of an important collection of scorpions, belonging to the genus Chaerilus, recently collected from a cave in the Palawan Island, Philippines, allows the clarification of the identity of this population, often misidentified with Chaerilus chapmani Vachon & Lourenço, 1985 known from caves in the Gunong Mulu National Park in Sarawak (Borneo). Chaerilus agnellivanniorum sp. n. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.12.001DOI Listing
December 2018
1 Read

Uprising the antioxidant power of Argania spinosa L. callus through abiotic elicitation.

C R Biol 2018 Dec 28. Epub 2018 Dec 28.

Laboratoire de biotechnologie et bio-ingénierie moléculaire, Faculté des sciences et techniques, Université Cadi Ayad, Guéliz, 40000 Marrakech, Morocco.

This study was carried out in order to investigate the ability of tissues of Argania spinosa (L.) to undergo unlimited cell divisions by triggering their proliferative potential via callogenesis. Axenic cultures were efficiently established using axillary buds cultured on half-strength Murashige and Skoog (MS) medium after 20min of surface sterilization with sodium hypochlorite 6% (v/v). Read More

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http://dx.doi.org/10.1016/j.crvi.2018.11.001DOI Listing
December 2018
1 Read

Role of AMPK in mammals reproduction: Specific controls and whole-body energy sensing.

C R Biol 2018 Dec 20. Epub 2018 Dec 20.

Faculty of Biology-Agricultural Engineering, Quy Nhon University, Binh Dinh, Viet Nam; Physiologie de la Reproduction et des Comportements, INRA, Nouzilly, France. Electronic address:

AMP-activated protein kinase (AMPK) is a key enzyme involved in linking the energy sensing to metabolic pathways. As such, it plays a central role at the whole-body level to translate endocrine communications into adapted responses aimed either at saving energy when food is scarce or at allocating it to various functions, particularly reproduction, when food is available. AMPK also plays major roles in the energy individual cells use in order to realize their specific functions. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.10.003DOI Listing
December 2018
1 Read

Stepwise response of MeJA-induced genes and pathways in leaves of C. roseus.

C R Biol 2018 Nov - Dec;341(9-10):411-420. Epub 2018 Oct 26.

Department of Genetics, Faculty of Agriculture, Ain Shams University, Cairo, Egypt.

Catharanthus roseus is a perennial herb known for the production of important terpenoid indole alkaloids (TIAs) in addition to a variety of phenolic compounds. The goal of the present work was to detect the prolonged effects of MeJA (6 uM) treatment across time (up to 24 days) in order to detect the stepwise response of MeJA-induced genes and pathways in leaves of C. rouses. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S16310691183017
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http://dx.doi.org/10.1016/j.crvi.2018.10.001DOI Listing
January 2019
19 Reads
0.981 Impact Factor

[The sacred forests of Guinea: Between ecology and conservation].

C R Biol 2018 Nov - Dec;341(9-10):433-443. Epub 2018 Nov 11.

Laboratoire de recherche forestière (LRF), Université de Lomé, BP 1515, Lomé, Togo.

Guinea has very little ecological data available regarding its sacred forests. This study shows the important conservation role of these forests in a local context of strong human impacts. We present four representative case studies from the Sudano-Guinean zone in Upper Guinea. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.09.001DOI Listing
January 2019
12 Reads

Almost a century of oblivion: Integrative taxonomy allows the resurrection of the longnose skate Zearaja brevicaudata (Marini, 1933) (Rajiformes; Rajidae).

C R Biol 2018 Nov - Dec;341(9-10):454-470. Epub 2018 Nov 10.

Laboratorio de Biotaxonomia Morfológica y Molecular de Peces, Instituto de Investigaciones Marinas y Costeras (IIMYC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata-CONICET, CC1260, Funes 3350, 7600 Mar del Plata, Argentina. Electronic address:

Zearaja chilensis has been reported from Southern Brazil in the Southwest Atlantic (SWA) to northern Chile in the Southeast Pacific (SEP), and it was listed as vulnerable by the IUCN. Recent molecular studies have called into question the conspecificity between specimens from these opposite coasts of South America, which can have implications for the conservation status of the species. To verify the identity of specimens identified as Z. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.10.002DOI Listing
January 2019
1 Read

[Beech (Fagus sylvatica) germination and seedling growth under climatic and allelopathic constraints].

C R Biol 2018 Nov - Dec;341(9-10):444-453. Epub 2018 Oct 23.

BioGeCo, université de Bordeaux, Inra, 33615 Pessac, France. Electronic address:

Recruitment is a key process for forest sustainability, especially in warm margin of distribution area. The influence of climate (temperate or warm), of soil water availability, and of allelopathic interactions from different forest species have been tested on the germination of Fagus sylvatica in controlled climatic conditions. Germination rates of non-dormant Fagus seeds were improved by relatively warm temperatures (20°C), but reversibly stopped under heat constraint (27°C). Read More

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https://linkinghub.elsevier.com/retrieve/pii/S16310691183017
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http://dx.doi.org/10.1016/j.crvi.2018.09.003DOI Listing
January 2019
9 Reads

From depth to regional spatial genetic differentiation of Eunicella cavolini in the NW Mediterranean.

C R Biol 2018 Nov - Dec;341(9-10):421-432. Epub 2018 Oct 11.

Aix Marseille University, Avignon Université, CNRS, IRD, IMBE, Marseille, France; Aix Marseille University, Université de Toulon, CNRS, IRD, MIO UM 110, 13288 Marseille, France. Electronic address:

Connectivity studies in the marine realm are of great importance to understand the evolutionary potential of populations in a context of growing pressures on the marine environment. Here, we investigated the effect of the local, regional, and depth spatial scale on the population genetic structure of the yellow gorgonian Eunicella cavolini, one of the most common octocoral species of the Mediterranean hard-bottom communities. This species, along with other sessile metazoans typical of coralligenous ecosystems, plays an important role in supporting biodiversity, but is also impacted by direct and indirect consequences of human activities, such as physical destruction or mortality events due to thermal anomalies. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.09.002DOI Listing
January 2019
7 Reads

[Variation in Thaumetopoea pityocampa infestation rate of Aleppo pine: Effect on dendrometric parameters in the Djelfa region forests (Saharan Atlas, Algeria)].

C R Biol 2018 Sep - Oct;341(7-8):380-386. Epub 2018 Aug 31.

Équipe « Désertification et climat », laboratoire de mécanique, université Amar-Telidji-Laghouat, BP 37, 03000 Laghouat, Algérie. Electronic address:

The forests of the Saharan Atlas represent the southern edge of the natural range of the Aleppo pine (Pinus halepensis Mill.). These are exposed to climatic stress in relation to drought and attacks of the pine processionary moth (Thaumetopoea pityocampa Schiff. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.08.002DOI Listing
November 2018
1 Read

Notes on the distribution and phylogeography of two rare small Gerbillinae (Rodentia, Muridae) in Morocco: Gerbillus simoni and Gerbillus henleyi.

C R Biol 2018 Sep - Oct;341(7-8):398-409. Epub 2018 Aug 25.

Laboratory 'Biodiversity, Ecology and Genome', Research Center 'Plant and Microbial Biotechnology, Biodiversity and Environment', Faculty of Sciences, Mohammed V University in Rabat, 4, avenue Ibn-Battouta, B.P. 1014 RP, Rabat, Morocco.

Even though Gerbillinae rodents represent an important part of the mammalian fauna in North Africa, many gaps remain in our understanding of the distribution, ecology, evolution, and systematics of some lesser known species in this family. We present in this study the most recent findings on two of these species. The first species, Gerbillus simoni Lataste, 1881, is a short-tailed, small gerbil, endemic to North Africa. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.08.001DOI Listing
November 2018
14 Reads

Role of estrogen receptors, P450 aromatase, PCNA and p53 in high-fat-induced impairment of spermatogenesis in rats.

C R Biol 2018 Sep - Oct;341(7-8):371-379. Epub 2018 Aug 24.

Department of Biology, University Federico II, 80134 Napoli, Italy.

Obesity and overweight are frequently associated with male subfertility. To address new findings on the players involved in the obesity-induced impairment of spermatogenesis, we used a high-fat diet-induced overweight-rat model. Following four weeks of high-fat diet, the organization of seminiferous epithelium was affected, and tubules lumen showed immature/degenerated cells, typical signs of hormonal imbalance and testicular damage. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S16310691183015
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http://dx.doi.org/10.1016/j.crvi.2018.07.002DOI Listing
November 2018
11 Reads

First description of a new uncultured purple sulfur bacterium colonizing marine mangrove sediment in the Caribbean: Halochromatium-like PSB from Guadeloupe.

C R Biol 2018 Sep - Oct;341(7-8):387-397. Epub 2018 Aug 7.

Sorbonne Universités, UPMC Université Paris-6, Université des Antilles, CNRS, Évolution Paris Seine-Institut de biologie Paris Seine (EPS-IBPS), 75005 Paris, France.

Here, we report the first description of a marine purple sulfur bacterium (PSB) from sulfide-rich sediments of a marine mangrove in the Caribbean. TEM shows that this new isolate contains intracytoplasmic vesicular membrane systems (containing bacteriochlorophyll a) and larger internal sulfur granules, confirmed by EDXS analyses performed using ESEM. The sulfur distribution and mapping obtained for this PSB strain has allowed us to conclude that elemental sulfur is formed as an intermediate oxidation product and stored intracellularly. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.07.001DOI Listing
November 2018
1 Read

Scorpions at high altitudes: A new species of Scorpiops Peters, 1861 (Scorpiones: Scorpiopidae) from the Taxkorgan Reserve, Xinjiang, China.

C R Biol 2018 Jul - Aug;341(6):362-369. Epub 2018 Jul 2.

Muséum national d'histoire naturelle, Sorbonne Universités, Institut de systématique, évolution, bodiversité (ISYEB), UMR7205 CNRS, MNHN, UPMC, EPHE, CP 53, 57, rue Cuvier, 75005 Paris, France. Electronic address:

Although scorpions have been described from China since the 19th century, it was only in the early 2000s that this fauna has seen a noticeable improvement in terms of the number and diversity of the described taxa. Some regions of China have been extensively prospected, while others remain largely unexplored. The latter is the case for the Province of Xinjiang, in the Extreme West of the country. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.06.002DOI Listing
October 2018
4 Reads

Alkaloid secretion inhibited by antibiotics in Aphaenogaster ants.

C R Biol 2018 Jul - Aug;341(6):358-361. Epub 2018 Jun 30.

IRBI, Institut de recherche sur la biologie de l'insecte, Université de Tours, Faculté des sciences, parc de Grandmont, 37200 Tours, France. Electronic address:

Although alkaloids are frequent in the poison glands of ants of the genus Aphaenogaster, this is not the case for A. iberica. Hypothesizing that in the genus Aphaenogaster, alkaloids are produced by symbiotic bacteria, except for A. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.06.004DOI Listing
October 2018
11 Reads

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

C R Biol 2018 Jul - Aug;341(6):343-348. Epub 2018 Jun 29.

Phytopathology Unit, Department of Plant Protection, École nationale d'agriculture de Meknès, Km 10, route Haj Kaddour, BP S/40, Meknès 50001, Morocco. Electronic address:

Rhizomania is one of serious threat to sugar beet production in Morocco and in several parts of the world. This disease led to a statistically significant decrease in the quality and yield of sugar beet plantations. Therefore, this study aimed at comparing the efficacy of six commonly used RNA extraction methods for the detection, recovery of RNA of beet necrotic yellow vein virus (BNYVV) and removal of amplification inhibitors by reverse transcription-polymerase chain reaction (RT-PCR). Read More

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http://dx.doi.org/10.1016/j.crvi.2018.06.003DOI Listing
October 2018
9 Reads

Genetic diversity of the toll-like receptor 2 (TLR2) in hare (Lepus capensis) populations from Tunisia.

C R Biol 2018 Jul - Aug;341(6):315-324. Epub 2018 Jul 7.

Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna, Savoyenstrasse 1, 1160 Vienna, Austria.

Toll-like receptors (TLRs) are a major group of proteins that recognize molecular components of infectious agents, known as pathogen associated molecular patterns (PAMPs). The structure of these genes is similar and characterized by the presence of an ectodomain, a signal transmembrane segment and a highly conserved cytoplasmic domain. The latter domain is homologous to the human interleukin-1 receptor (IL1R) and human IL-18 receptor (IL-18R) and designated TIR domain. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.06.005DOI Listing
October 2018
2 Reads

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

C R Biol 2018 Jul - Aug;341(6):325-333. Epub 2018 Jul 5.

Department of Clinical Physiology, Faculty of Veterinary Medicine, University of Warmia and Mazury, Oczapowskiego Street 13, 10718 Olsztyn, Poland.

Cocaine- and amphetamine-regulated transcript peptide (CART) is widely distributed within the central and peripheral nervous system. In the brain, CART is considered as the main anorectic peptide involved in the regulation of food intake. Contrary to the central nervous system, a lot of aspects connected with the distribution and functions of CART within the enteric nervous system (ENS) still remain unknown. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.06.006DOI Listing
October 2018
2 Reads

Symbiosis and cohabitation.

C R Biol 2018 May - Jun;341(5):275

Sorbonne University and Institut Pasteur, Paris, France.

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http://dx.doi.org/10.1016/j.crvi.2018.06.001DOI Listing
June 2018
13 Reads

Endosymbiosis as a source of immune innovation.

C R Biol 2018 May - Jun;341(5):290-296. Epub 2018 Jun 2.

Université de Lyon, INSA-Lyon, Inra, BF2i, UMR0203, 69621 Villeurbanne, France. Electronic address:

Some years ago, Lynn Margulis proposed to envision symbiosis as a source of evolutionary innovation. Here we revisit this concept in the context of insect nutritional endosymbiosis, and discuss recent data suggesting that host-endosymbiont coevolution has led to the selection of innovative strategies towards endosymbiont maintenance and control by the host immune system. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.03.005DOI Listing
October 2018
2 Reads

Influence of organic and inorganic sources of nutrients on the functional diversity of microbial communities in the vegetable cropping system of the Indo-Gangetic plains.

C R Biol 2018 Jul - Aug;341(6):349-357. Epub 2018 May 31.

ICAR-Indian Institute of Vegetable Research, Jakhini, Sahanshapur, 221305 Varanasi, Uttar Pradesh, India.

The aim of the present study was to assess the effects of different organic and inorganic fertilizers on the functional diversity of soil microbial community under a vegetable production system. The Biolog Eco-plate technique and indices, such as average well-colour development (AWCD), McIntosh and Shannon diversity were employed to study the diversity of soil microorganisms. The AWCD, i. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.05.002DOI Listing
October 2018
2 Reads

Spectral lights trigger biomass accumulation and production of antioxidant secondary metabolites in adventitious root cultures of Stevia rebaudiana (Bert.).

C R Biol 2018 Jul - Aug;341(6):334-342. Epub 2018 May 30.

Centre for Biotechnology and Microbiology, University of Swat, 19200 Swat, Pakistan. Electronic address:

Stevia rebaudiana (S. rebaudiana) is the most important therapeutic plant species and has been accepted as such worldwide. It has a tendency to accumulate steviol glycosides, which are 300 times sweeter than marketable sugar. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S16310691183008
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http://dx.doi.org/10.1016/j.crvi.2018.05.003DOI Listing
October 2018
10 Reads
0.980 Impact Factor

[Strengths, weaknesses, and opportunities of French research in trophic ecology].

C R Biol 2018 Jul - Aug;341(6):301-314. Epub 2018 May 30.

GDR CNRS 3716 GRET, Groupe de recherche en écologie trophique, 63170 Aubière, France; Université Clermont Auvergne, CNRS, LMGE, 63000 Clermont-Ferrand, France.

The French National Institute of Ecology and Environment (INEE) aims at fostering pluridisciplinarity in Environmental Science and, for that purpose, funds ex muros research groups (GDR) on thematic topics. Trophic ecology has been identified as a scientific field in ecology that would greatly benefit from such networking activity, as being profoundly scattered. This has motivated the seeding of a GDR, entitled "GRET". Read More

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https://linkinghub.elsevier.com/retrieve/pii/S16310691183008
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http://dx.doi.org/10.1016/j.crvi.2018.05.001DOI Listing
October 2018
3 Reads

Aberrant growth of maxillary canine teeth in male babirusa (genus Babyrousa).

C R Biol 2018 Apr 23;341(4):245-255. Epub 2018 May 23.

Royal (Dick) School of Veterinary Studies and the Roslin Institute, Easter Bush Campus, The University of Edinburgh, Roslin, Midlothian EH25 9RG, Scotland; Royal Zoological Society of Scotland, 134, Corstorphine Road, Edinburgh EH12 6TS, Scotland. Electronic address:

A worldwide survey of babirusa skulls curated in museum and private collections located 431 that were from adult males and had retained at least one maxillary canine tooth. Eighty-three of these skulls were identified as exhibiting aberrant maxillary canine tooth growth. Twenty-four of the skulls represented babirusa from Buru and the Sula Islands, and forty-five skulls represented babirusa from Sulawesi and the Togian Islands. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.04.003DOI Listing
April 2018
2 Reads

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

C R Biol 2018 May - Jun;341(5):300. Epub 2018 May 21.

Instituto Gulbenkian de Ciência, Oeiras, Portugal. Electronic address:

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http://dx.doi.org/10.1016/j.crvi.2018.04.004DOI Listing
May 2018
2 Reads

Maxillary tooth growth in the adult male babirusa (genus Babyrousa).

C R Biol 2018 Apr 8;341(4):235-244. Epub 2018 May 8.

Royal (Dick) School of Veterinary Studies and the Roslin Institute, Easter Bush Campus, The University of Edinburgh, Roslin, EH25 9RG Midlothian, Scotland.

The growth of the maxillary canine teeth of the babirusa (genus Babyrousa) was studied on a sample of 149 adult male babirusa skulls from twenty-two international museum and private collections. Skulls from Buru, Sulawesi and the Togian Islands were represented. The continuous growth process was summarised into five stages ('A'-'E') according to the position of the tip of the tooth over the bones of the skull. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.04.002DOI Listing
April 2018
2 Reads

Xenopus laevis oocyte as a model for the study of the cytoskeleton.

C R Biol 2018 Apr 26;341(4):219-227. Epub 2018 Apr 26.

Department of Biology, University of Naples Federico II, Napoli, Italy.

At the beginning of diplotene, the oocyte of Xenopus laevis is a cell of about 10-20 microns destined to increase 10,000-fold its size when the oocyte becomes filled with yolk platelets and has accumulated a great number of pigment granules in a half of its periphery. Its internal architecture is gradually accomplished during growth because of several factors, especially because of cytoskeletal changes. In the fully-grown oocyte, the cytoskeleton appears to sustain the eccentrically located germinal vesicle through arms radiating from the cortex to the germinal vesicle, a unique organization not to be found in other Amphibians. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.04.001DOI Listing
April 2018
3 Reads

Response of epilithic diatom communities to environmental gradients along an Ecuadorian Andean River.

C R Biol 2018 Apr 11;341(4):256-263. Epub 2018 Apr 11.

Universidade de Santa Cruz do Sul (UNISC), Rio Grande do Sul, Brazil.

Epilithic diatom communities are particularly suitable for the evaluation of freshwater quality. In Ecuador, however, no water quality index includes this biotic parameter. This work is the first attempt in the country to determine the composition of epilithic diatom communities associated with different degrees of eutrophication. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.03.008DOI Listing
April 2018
6 Reads

How does an animal behave like a plant? Physiological and molecular adaptations of zooxanthellae and their hosts to symbiosis.

C R Biol 2018 May - Jun;341(5):276-280. Epub 2018 Apr 9.

UMR 7138 EPS, Sorbonne Universités, UPMC Université Paris-6, université des Antilles, université Nice-Sophia-Antipolis, CNRS, laboratoire évolution Paris-Seine, institut de Biologie Paris-Seine (EPS-IBPS), Parc Valrose, 28, avenue Valrose, BP71, 06108 Nice cedex 02, France. Electronic address:

Cnidarians (corals and sea anemones) harbouring photosynthetic microalgae derive several benefits from their association. To allow this association, numerous symbiotic-dependent adaptations in both partners, resulting from evolutionary pressures, have been selected. The dinoflagellate symbionts (zooxanthellae) are located inside a vesicle in the cnidarian host cell and are therefore exposed to a very different environment compared to the free-living state of these microalgae in terms of ion concentration and carbon content and speciation. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.03.007DOI Listing
October 2018
8 Reads

The impact of the intestinal microbiota in therapeutic responses against cancer.

C R Biol 2018 May - Jun;341(5):284-289. Epub 2018 Apr 7.

U1015 INSERM, université Paris-11, Saclay, Institut Gustave-Roussy, 114, rue Édouard-Vaillant, 94800 Villejuif, France. Electronic address:

Accumulating evidence points to the impact of the gut microbiota in regulating various chronic inflammatory disorders such as cancers. The intestinal microbiome is not only influencing the spontaneous course of colon malignancies but also acts at distant sterile sites of neoplasia, mostly playing a detrimental role. By providing microbial-associated molecular patterns and potentially antigens sharing molecular mimicry with tumor antigens, our commensals modulate the local and the systemic immune tonus, eventually influencing tumor microenvironment. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.03.004DOI Listing
October 2018
9 Reads

The microbiota, a necessary element of immunity.

Authors:
Gérard Eberl

C R Biol 2018 May - Jun;341(5):281-283. Epub 2018 Apr 7.

Institut Pasteur, Microenvironment & Immunity Unit, 75724 Paris, France; INSERM U1224, 75724 Paris, France. Electronic address:

The intestinal microbiota is essential for digestion, the production of physiological metabolites, and defense. More than 10 bacteria are present in the intestine, inspiring awe as well as fear of potential infections. By definition, the immune system protects us from infection, and is given the task to recognize dangerous pathogens from useful mutualists. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.03.003DOI Listing
October 2018
6 Reads

Bacterial interspecies quorum sensing in the mammalian gut microbiota.

C R Biol 2018 May - Jun;341(5):297-299. Epub 2018 Apr 7.

Instituto Gulbenkian de Ciência, Oeiras, Portugal. Electronic address:

The mammalian gastrointestinal tract harbors a diverse and complex resident bacterial community, which interacts with the host in many beneficial processes required for optimal host health. We are studying the importance of bacterial cell-cell communication mediated by the interspecies quorum-sensing signal autoinducer-2 (AI-2) in the beneficial properties of the gut microbiota. Our recent work provided the first evidence that AI-2 produced by Escherichia coli can influence the species composition of this community in the mouse gut. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.03.006DOI Listing
October 2018
5 Reads

The genus Vietbocap Lourenço & Pham, 2010 in the Thien Duong cave, Vietnam: A possible case of subterranean speciation in scorpions (Scorpiones: Pseudochactidae).

C R Biol 2018 Apr 31;341(4):264-273. Epub 2018 Mar 31.

Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam; Hanoi Center for preventive medicine, 70, Nguyen Chi Thanh, Dong Da, Hanoi, Vietnam.

Two new species of scorpion belonging to the family Pseudochactidae and to the genus Vietbocap are described based on specimens collected in the Thien Duong cave, which belongs to the Vom cave system, in the Phong Nha-Ke Bang National Park, Quang Binh Province, Vietnam. The previously described species from this cave, Vietbocap thienduongensis Lourenço & Pham, 2012 was collected in the initial section of the cave (1500 to 1800m from the cave entrance) and proved to be a true troglobitic element. The diagnosis of this species, only known from males, is completed based on females collected at 750m from the cave entrance. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.03.002DOI Listing
April 2018
5 Reads

[Informative predation: Towards a new species concept].

C R Biol 2018 Apr 30;341(4):209-218. Epub 2018 Mar 30.

Château du Fontenil, 61300 L'Aigle, France. Electronic address:

We distinguish two types of predations: the predation of matter-energy equals the food chain, and the informative predation is the capture of the information brought by the sexual partners. The cell or parent consumes energy and matter to grow, multiply and produce offspring. A fixed amount of resources is divided by the number of organisms, so individual growth and numerical multiplication are limited by depletion resources of the environment. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S16310691183004
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http://dx.doi.org/10.1016/j.crvi.2018.02.004DOI Listing
April 2018
8 Reads

First evidence of DAAM1 localization in mouse seminal vesicles and its possible involvement during regulated exocytosis.

C R Biol 2018 Apr 21;341(4):228-234. Epub 2018 Mar 21.

Dipartimento di Medicina Sperimentale, Sez, Fisiologia Umana e Funzioni Biologiche Integrate, Università degli studi della Campania "Luigi Vanvitelli", Via Costantinopoli, 16, 80138 Napoli, Italy. Electronic address:

Dishevelled-associated activator of morphogenesis 1 (DAAM1) is a protein belonging to the formin family, which regulates, together with the small GTPase RhoA, the nucleation and the assembly of actin fibres through Wnt-Dishevelled PCP pathway. Its role has been investigated in essential biological processes, such as cell polarity, movement and adhesion during morphogenesis and organogenesis. In this work, we studied the expression of DAAM1 mRNA and protein by PCR and Western blot analyses and its co-localization with actin in adult mouse seminal vesicles by immunofluorescence. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.03.001DOI Listing
April 2018
3 Reads

Ants impact the composition of the aquatic macroinvertebrate communities of a myrmecophytic tank bromeliad.

C R Biol 2018 Mar 19;341(3):200-207. Epub 2018 Mar 19.

Université Clermont Auvergne, CNRS, LMGE, 63000 Clermont-Ferrand, France.

In an inundated Mexican forest, 89 out of 92 myrmecophytic tank bromeliads (Aechmea bracteata) housed an associated ant colony: 13 sheltered Azteca serica, 43 Dolichoderus bispinosus, and 33 Neoponera villosa. Ant presence has a positive impact on the diversity of the aquatic macroinvertebrate communities (n=30 bromeliads studied). A Principal Component Analysis (PCA) showed that the presence and the species of ant are not correlated to bromeliad size, quantity of water, number of wells, filtered organic matter or incident radiation. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.02.003DOI Listing
March 2018
4 Reads

StAR protein and steroidogenic enzyme expressions in the rat Harderian gland.

C R Biol 2018 Mar 10;341(3):160-166. Epub 2018 Mar 10.

Department of Environmental, Biological, and Pharmaceutical Sciences & Technologies, University of Campania "L. Vanvitelli", Caserta, Italy. Electronic address:

The Harderian gland (HG) of the rat (Rattus norvegicus) secretes copious amounts of lipids, such as cholesterol. Here we report a study of the expressions of the StAR protein and key steroidogenic enzymes in the HG of male and female rats. The objective of the present investigation was to ascertain (a) whether the rat HG is involved in steroid production starting with cholesterol, and (b) whether the pattern of gene and protein expressions together with the enzymatic activities display sexual dimorphism. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.02.001DOI Listing
March 2018
5 Reads

An arboreal spider protects its offspring by diving into the water of tank bromeliads.

C R Biol 2018 Mar 9;341(3):196-199. Epub 2018 Mar 9.

EcoLab, Université de Toulouse, CNRS, INPT, UPS, Toulouse, Toulouse, France; CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 97310 Kourou, France.

Cupiennius salei (Ctenidae) individuals frequently live in association with tank bromeliads, including Aechmea bracteata, in Quintana Roo (Mexico). Whereas C. salei females without egg sacs hunt over their entire host plant, females carrying egg sacs settle above the A. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.02.002DOI Listing
March 2018
5 Reads

Formation of banded vegetation patterns resulted from interactions between sediment deposition and vegetation growth.

C R Biol 2018 Mar 2;341(3):167-181. Epub 2018 Mar 2.

Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing 102206, PR China.

This research investigates the formation of banded vegetation patterns on hillslopes affected by interactions between sediment deposition and vegetation growth. The following two perspectives in the formation of these patterns are taken into consideration: (a) increased sediment deposition from plant interception, and (b) reduced plant biomass caused by sediment accumulation. A spatial model is proposed to describe how the interactions between sediment deposition and vegetation growth promote self-organization of banded vegetation patterns. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.01.008DOI Listing
March 2018
7 Reads

[On the extinction of populations with several types in a random environment].

Authors:
Nicolas Bacaër

C R Biol 2018 Mar 26;341(3):145-151. Epub 2018 Feb 26.

Unité UMMISCO, Les Cordeliers, Institut de recherche pour le développement, 75006 Paris, France. Electronic address:

This study focuses on the extinction rate of a population that follows a continuous-time multi-type branching process in a random environment. Numerical computations in a particular example inspired by an epidemic model suggest an explicit formula for this extinction rate, but only for certain parameter values. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.01.009DOI Listing
March 2018
6 Reads

A mimetic nesting association between a timid social wasp and an aggressive arboreal ant.

C R Biol 2018 Mar 23;341(3):182-188. Epub 2018 Feb 23.

CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 97310 Kourou, France. Electronic address:

In French Guiana, the arboreal nests of the swarm-founding social wasp Protopolybia emortualis (Polistinae) are generally found near those of the arboreal dolichoderine ant Dolichoderus bidens. These wasp nests are typically protected by an envelope, which in turn is covered by an additional carton 'shelter' with structure resembling the D. bidens nests. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.01.006DOI Listing
March 2018
6 Reads

Genetic diversity and population structure of a protected species: Polygala tenuifolia Willd.

C R Biol 2018 Mar 22;341(3):152-159. Epub 2018 Feb 22.

Ningxia Medical University Pharmacy College, 750004 Yinchuan, Ningxia, China; Ningxia Research Center of Modern Hui Medicine Engineering and Technology, 750004 Yinchuan, Ningxia, China. Electronic address:

Polygala tenuifolia Willd. is an important protected species used in traditional Chinese medicine. In the present study, amplified fragment length polymorphism (AFLP) markers were employed to characterize the genetic diversity in wild and cultivated P. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.01.007DOI Listing
March 2018
9 Reads
0.980 Impact Factor

Redescription of Paradiscocyrtus neglectus Mello-Leitão, 1927 (Opiliones: Gonyleptidae), with the designation of a neotype and two synonymies.

C R Biol 2018 Mar 17;341(3):189-195. Epub 2018 Feb 17.

Departamento de Invertebrados, Museu Nacional/UFRJ, Quinta da Boa Vista, São Cristóvão, 20.940-040, Rio de Janeiro, RJ, Brazil. Electronic address:

Paradiscocyrtus neglectus Mello-Leitão, 1927 is here redescribed and for the first time illustrated. A neotype is proposed to clarify the taxonomic status of this species and to differentiate it from the other two species of Paradiscocyrtus and related genera (e.g. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.01.005DOI Listing
March 2018
10 Reads

Species identification of polygonati rhizoma in China by both morphological and molecular marker methods.

C R Biol 2018 Feb 7;341(2):102-110. Epub 2018 Feb 7.

College of Life Science, Northwest A&F University, Yangling, 712100 Shaanxi, China. Electronic address:

Morphological markers as well as two types of molecular markers, inter-sample sequence repeat (ISSR) and start codon targeted (SCoT) are suitable for species identification of the polygonati rhizoma germplasms. In this paper, we adopted these methods for the identification of rhizomes collected from 47 areas in China. Based on their morphological characters, the collected germplasms were classified into two populations, one with alternate leaf arrangement and the other with verticillate leaf arrangement, and they were comprised of five species and fourteen subgroups. Read More

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http://dx.doi.org/10.1016/j.crvi.2017.10.004DOI Listing
February 2018
7 Reads

Neotrygon indica sp. nov., the Indian Ocean blue-spotted maskray (Myliobatoidei, Dasyatidae).

C R Biol 2018 Feb 4;341(2):120-130. Epub 2018 Feb 4.

Institut de recherche pour le développement (IRD), UMR 250 "Écologie marine tropicale des océans Pacifique et Indien", Nouméa, New Caledonia. Electronic address:

The blue-spotted maskray, previously N. kuhlii, consists of up to eleven lineages representing separate species. Nine of these species (N. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.01.004DOI Listing
February 2018
6 Reads
0.981 Impact Factor

A euryhaline fish, lost in the desert: The unexpected metapopulation structure of Coptodon guineensis (Günther, 1862) in the Sebkha of Imlili.

C R Biol 2018 Feb 3;341(2):75-84. Epub 2018 Feb 3.

ISEM, CNRS, Université de Montpellier, IRD, EPHE, 34005 Montpellier, France; Institut de recherche pour le développement, BP 1857, Yaoundé, Cameroon.

Euryhaline Cichlid fish of the species Coptodon guineensis are present in different water holes situated in a dried depression in the desert in the extreme South of Morocco, the Sebkha of Imlili. A genetic survey of this population, using complete sequences of the ND2 gene (mtDNA) and sixteen microsatellite loci, revealed that the fish in the sebkha did not form a single population, but rather a metapopulation. This metapopulational structure may be regarded as good news from the point of view of the conservation of fish in the sebkha. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.01.002DOI Listing
February 2018
13 Reads
0.981 Impact Factor

Dysomma alticorpus, a new species of cutthroat eel from the Gulf of Aqaba, Red Sea (Teleostei: Synaphobranchidae).

C R Biol 2018 Feb 3;341(2):111-119. Epub 2018 Feb 3.

Senckenberg Forschungsinstitut und Naturmuseum, Sektion Ichthyologie, Senckenberganlage 25, 60325 Frankfurt am Main, Germany; Senckenberg Biodiversität und Klima Forschungszentrum, Forschungsbereich Ökosystemleistungen und Klima, 25, 60325 Frankfurt am Main, Germany.

The cutthroat eel Dysomma alticorpus n. sp. is described based on a single specimen collected in a trammel net at a depth of 350m off Eilat, Israel, Gulf of Aqaba, Red Sea. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S16310691183000
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http://dx.doi.org/10.1016/j.crvi.2017.10.005DOI Listing
February 2018
15 Reads

Responses of rice (Oryza sativa L.) genotypes to different levels of submergence.

C R Biol 2018 Feb 3;341(2):85-96. Epub 2018 Feb 3.

Department of Genetics & Plant Breeding, Bangladesh Agricultural University, 2202 Mymensingh, Bangladesh. Electronic address:

The study aims at identifying some submergence-tolerant rice genotypes through morphological and molecular characterization and their genetic variability analysis. Ten rice genotypes including two submergence-tolerant checks, two susceptible varieties and six advanced lines were evaluated for submergence tolerance in the laboratory and in the field during January-December 2015. The experiment was conducted in the field following randomized complete block design in a two-factor arrangement using five replications. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.01.001DOI Listing
February 2018
6 Reads

The potency of lemon (Citrus limon L.) essential oil to control some fungal diseases of grapevine wood.

C R Biol 2018 Feb 2;341(2):97-101. Epub 2018 Feb 2.

Laboratoire of chimie agro-industrielle (LCA), Université de Toulouse, INRA, INPT, 31030 Toulouse, France; Université Paul-Sabatier, IUT A, Département de génie biologique, 24, rue d'Embaquès, 32000 Auch, France. Electronic address:

This study aimed to evaluate the in vitro antifungal activity (AA) of the essential oil (EO) of lemon (Citrus limon L.) against three pathogenic fungi attacking grapevine wood. The composition of the EO was also studied. Read More

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http://dx.doi.org/10.1016/j.crvi.2018.01.003DOI Listing
February 2018
7 Reads