Consulta: subjectFacets:"Madrepora oculata"
Registros recuperados: 6
Data/hora: 06/06/2024 09:20:45

Ecologie et cartographie des coraux d’eau froide du canyon de Lacaze-Duthiers en Méditerranée; Données de la campagne CALADU 2019
Provedor de dados: 5
Autores: Sanchez, Pierre; Fabri, Marie-claire.
This work aimed to study populations of cold-water corals in the Lacaze-Duthiers canyon, a French canyon in the western part of the Gulf of Lion. the study was carried out using photos and videos of the wire-Remote Operated Vehicle: the HROV Ariane. Analysis of photos and videos allowed us to obtain information on the general biodiversity, on the spatial and vertical distribution and on the population density of the coldwater coral communities of the canyon but also on the size ranges and of colors of these species. Thus, it was noted that Madrepora oculata was the most represented species. This species has been observed in abundance ten times greater than the Lophelia pertusa species, which presented very dense distributions in places and then almost...
Tipo: Text
Palavras-chave: Canyon; Mer Méditerranée; Coraux d’eau froide; Cartographie d’habitats; Distribution spatiale; Madrepora oculata; Desmophyllum pertusum (Lophelia pertusa); Biodivesrsité.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00644/75634/76497.pdf

Low incidence of clonality in cold water corals revealed through the novel use of standardized protocol adapted to deep sea sampling
Provedor de dados: 5
Autores: Becheler, Ronan; Cassone, Anne-laure; Noel, Philippe; Mouchel, Olivier; Morrison, Cheryl L.; Arnaud-haond, Sophie.
Sampling in the deep sea is a technical challenge, which has hindered the acquisition of robust datasets that are necessary to determine the fine-grained biological patterns and processes that may shape genetic diversity. Estimates of the extent of clonality in deep-sea species, despite the importance of clonality in shaping the local dynamics and evolutionary trajectories, have been largely obscured by such limitations. Cold-water coral reefs along European margins are formed mainly by two reef-building species, Lophelia pertusa and Madrepora oculata. Here we present a fine-grained analysis of the genotypic and genetic composition of reefs occurring in the Bay of Biscay, based on an innovative deep-sea sampling protocol. This strategy was designed to be...
Tipo: Text
Palavras-chave: Cold-water coral; Lophelia pertusa; Madrepora oculata; Clonality; Fine-grained spatial genetic structure; Standardized sampling.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00300/41117/40291.pdf

Patterns of bacteria-host associations suggest different ecological strategies between two reef building cold-water coral species
Provedor de dados: 5
Autores: Meistertzheim, Anne. -leila; Lartaud, Franck; Arnaud-haond, Sophie; Kalenitchenko, Dimitri; Bessalam, Manon; Le Bris, Nadine; Galand, Pierre E.
Cold-water corals (CWC) are main ecosystem engineers of the deep sea, and their reefs constitute hot-spots of biodiversity. However, their ecology remains poorly understood, particularly, the nature of the holobiont formed by corals with their associated bacterial communities. Here, we analysed Madrepora oculata and Lophelia pertusa samples, collected from one location in a Mediterranean canyon in two different seasons (autumn and spring), in order to test for species specificity and temporal stability of the host-bacteria associations. The 16S rRNA sequencing revealed host-specific patterns of bacterial communities associated with L. pertusa and M. oculata, both in terms of community composition and diversity. All analyzed M. oculata polyps exhibited...
Tipo: Text
Palavras-chave: Deep-Sea corals; Madrepora oculata; Lophelia pertusa; Bacterial communities; Bacterial ecology; Mediterranean Sea; Microbe-microbe and microbe-host interactions.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00332/44362/43965.pdf

Two “pillars” of cold-water coral reefs along Atlantic European margins: Prevalent association of Madrepora oculata with Lophelia pertusa, from reef to colony scale
Provedor de dados: 5
Autores: Arnaud-haond, Sophie; Van Den Beld, Inge; Becheler, Ronan; Orejas, C.; Menot, Lenaick; Frank, N.; Grehan, A.; Bourillet, Jean-francois.
The scleractinian coral Lophelia pertusa has been the focus of deep-sea research since the recognition of the vast extent of coral reefs in North Atlantic waters two decades ago, long after their existence was mentioned by fishermen. These reefs where shown to provide habitat, concentrate biomass and act as feeding or nursery grounds for many species, including those targeted by commercial fisheries. Thus, the attention given to this cold-water coral (CWC) species from researchers and the wider public has increased. Consequently, new research programs triggered research to determine the full extent of the corals geographic distribution and ecological dynamics of “Lophelia reefs”. The present study is based on a systematic standardised sampling design to...
Tipo: Text
Palavras-chave: Lophelia pertusa; Madrepora oculata; False-chimaera colonies; Cold water corals (CWC); Bay of Biscay; Ireland; Iceland.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00274/38530/37048.pdf

Out of the Mediterranean? Post‐glacial colonization pathways varied among cold‐water coral species
Provedor de dados: 5
Autores: Boavida, Joana; Becheler, Ronan; Choquet, Marvin; Frank, Norbert; Taviani, Marco; Bourillet, Jean-francois; Meistertzheim, Anne‐leila; Grehan, Anthony; Savini, Alessandra; Arnaud-haond, Sophie.
Aim To infer cold‐water corals’ (CWC) post‐glacial phylogeography and assess the role of Mediterranean Sea glacial refugia as origins for the recolonization of the northeastern Atlantic Ocean. Location Northeastern Atlantic Ocean and Mediterranean Sea. Taxon Lophelia pertusa, Madrepora oculata. Methods We sampled CWC using remotely operated vehicles and one sediment core for coral and sediment dating. We characterized spatial genetic patterns (microsatellites and a nuclear gene fragment) using networks, clustering and measures of genetic differentiation. Results Inferences from microsatellite and sequence data were congruent, and showed a contrast between the two CWC species. Populations of L. pertusa present a dominant pioneer haplotype, local haplotype...
Tipo: Text
Palavras-chave: Cold-water corals; Deep-sea; Glacial marine refugia; Last Glacial Maximum; Lophelia pertusa; Madrepora oculata; Marine phylogeography.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00487/59864/63140.pdf

Madrepora oculata
Provedor de dados: 23
Autores: Robert, K.
Digital still collected as part of CODEMAP
Tipo: Image
Palavras-chave: Scleractinia (Stony corals); Madrepora oculata.
Ano: 2009
URL: http://archive.serpentproject.com/2319/