|   | 
Détails
   web
Enregistrements
Auteur Barberan, A.; Fernandez-Guerra, A.; Auguet, J.C.; Galand, P.E.; Casamayor, E.O.
Titre Phylogenetic ecology of widespread uncultured clades of the Kingdom Euryarchaeota Type Article scientifique
Année 2011 Publication Revue Abrégée Mol Ecol
Volume 20 Numéro 9 Pages 1988-1996
Mots-Clés 16S/genetics Sequence Analysis; Biodiversity Databases; dna; Genetic *Ecosystem Environment Euryarchaeota/*classification/*genetics Genes; Ribosomal; rRNA/*genetics Phylogeny RNA
Résumé Despite its widespread distribution and high levels of phylogenetic diversity, microbes are poorly understood creatures. We applied a phylogenetic ecology approach in the Kingdom Euryarchaeota (Archaea) to gain insight into the environmental distribution and evolutionary history of one of the most ubiquitous and largely unknown microbial groups. We compiled 16S rRNA gene sequences from our own sequence libraries and public genetic databases for two of the most widespread mesophilic Euryarchaeota clades, Lake Dagow Sediment (LDS) and Rice Cluster-V (RC-V). The inferred population history indicated that both groups have undergone specific nonrandom evolution within environments, with several noteworthy habitat transition events. Remarkably, the LDS and RC-V groups had enormous levels of genetic diversity when compared with other microbial groups, and proliferation of sequences within each single clade was accompanied by significant ecological differentiation. Additionally, the freshwater Euryarchaeota counterparts unexpectedly showed high phylogenetic diversity, possibly promoted by their environmental adaptability and the heterogeneous nature of freshwater ecosystems. The temporal phylogenetic diversification pattern of these freshwater Euryarchaeota was concentrated both in early times and recently, similarly to other much less diverse but deeply sampled archaeal groups, further stressing that their genetic diversity is a function of environment plasticity. For the vast majority of living beings on Earth (i.e. the uncultured microorganisms), how they differ in the genetic or physiological traits used to exploit the environmental resources is largely unknown. Inferring population history from 16S rRNA gene-based molecular phylogenies under an ecological perspective may shed light on the intriguing relationships between lineage, environment, evolution and diversity in the microbial world.
Adresse
Auteur institutionnel Thèse
Editeur Lieu de Publication Éditeur
Langue Langue du Résumé Titre Original
Éditeur de collection Titre de collection Titre de collection Abrégé
Volume de collection Numéro de collection Edition
ISSN ISBN Médium
Région Expédition Conférence
Notes Approuvé pas de
Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 1305
Lien permanent pour cet enregistrement
 

 
Auteur Mancusi, C.; Baino, R.; Fortuna, C.; De Sola, L.G.; Morey, G.; Bradai, M.N.; Kallianotis, A.; Soldo, A.; Hemida, F.; Saad, A.A.; Dimech, M.; Peristeraki, P.; Bariche, M.; Clo, S.; De Sabata, E.; Castellano, L.; Garibaldi, F.; Lanteri, L.; Tinti, F.; Pais, A.; Sperone, E.; Micarelli, P.; Poisson, F.; Sion, L.; Carlucci, R.; Cebrian-Menchero, D.; Seret, B.; Ferretti, F.; El-Far, A.; Saygu, I.; Shakman, E.A.; Bartoli, A.; Guallart, J.; Damalas, D.; Megalofonou, P.; Vacchi, M.; Colloca, F.; Bottaro, M.; Di Sciara, G.N.; Follesa, M.C.; Cannas, R.; Kabasakal, H.; Zava, B.; Cavlan, G.; Jung, A.; Abudaya, M.; Kolitari, J.; Barash, A.; Joksimovic, A.; Cetkovic, I.; Marceta, B.; Gonzalez Vilas, L.; Tiralongo, F.; Giovos, I.; Bargnesi, F.; Lelli, S.; Barone, M.; Moro, S.; Mazzoldi, C.; Charis, C.; Abella, A.J.; Serena, F.
Titre MEDLEM database, a data collection on large Elasmobranchs in the Mediterranean and Black seas Type Article scientifique
Année 2020 Publication Revue Abrégée Mediterr. Mar. Sci.
Volume 21 Numéro 2 Pages 276-288
Mots-Clés 1st records; basking shark; by-catch; Bycatch; carcharhinidae; carcharodon-carcharias linnaeus; cetorhinus-maximus gunnerus; coast; conservation; databases; geographical distribution; lamniformes cetorhinidae; large elasinobranchs; Mediterranean and Black seas; plumbeus chondrichthyes; sharks
Résumé The Mediterranean Large Elasmobranchs Monitoring (MEDLEM) database contains more than 3,000 records (with more than 4,000 individuals) of large elasmobranch species from 21 different countries around the Mediterranean and Black seas, observed from 1666 to 2017. The principal species included in the archive are the devil ray (1,868 individuals), the basking shark (935 individuals), the blue shark (622 individuals), and the great white shark (342 individuals). In the last decades, other species such as the thresher shark (187 individuals), the shortfin mako (180 individuals), and the spiny butterfly ray (138) were reported with increasing frequency. This was possibly due to increased public awareness on the conservation status of sharks, and the consequent development of new monitoring programs. MEDLEM does not have homo-geneous reporting coverage throughout the Mediterranean and Black seas and it should be considered as a database of observed species presence. Scientific monitoring efforts in the south-eastern Mediterranean and Black seas arc generally lower than in the northern sectors and the absence of some species in our database does not imply their actual absence in these regions. However, the available data allowed us to analyse the frequency and spatial distribution of records, the size frequencies for a few selected the available data allowed us to analyse the frequency and spatial distribution of records, the size frequencies for a few selected species, the overall area coverage, and which species are involved as bycatch by different fishing gears.
Adresse
Auteur institutionnel Thèse
Editeur Lieu de Publication Éditeur
Langue English Langue du Résumé Titre Original
Éditeur de collection Titre de collection Titre de collection Abrégé
Volume de collection Numéro de collection Edition
ISSN 1108-393x ISBN Médium
Région Expédition Conférence
Notes WOS:000563186800002 Approuvé pas de
Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2870
Lien permanent pour cet enregistrement