Results 101 to 110 of about 1,652 (201)

The genome of the contractile demosponge Tethya wilhelma and the evolution of metazoan neural signalling pathways

, 2017
Porifera are a diverse animal phylum with species performing important ecological roles in aquatic ecosystems, and have become models for multicellularity and early-animal evolution.
Steven H.D. Haddock, Marcin Adamski, Gert Wörheide, Michael Eitel, Stefan Krebs, Sergio Vargas, Warren R. Francis, Dirk Erpenbeck, Helmut Blum   +8 more
core   +1 more source

Transcriptome profiling of the demosponge Amphimedon queenslandica reveals genome-wide events that accompany major life cycle transitions [PDF]

, 2012
Background: The biphasic life cycle with pelagic larva and benthic adult stages is widely observed in the animal kingdom, including the Porifera (sponges), which are the earliest branching metazoans.
Degnan, Bernard M, Degnan Sandie M, Degnan Bernard M, Arcila Mary, Degnan, Sandie M, Degnan, Sandie M., Bernard M Degnan, Mary Arcila, Hongjun Zhou, Cecilia Conaco, Neveu Pierre, Kosik, Kenneth S, Kosik, Kenneth S., Sandie M Degnan, Conaco Cecilia, Kenneth S Kosik, Degnan, Bernard M., Kosik Kenneth S, Conaco, Cecilia, Arcila, Mary, Arcila, Mary L., Zhou, Hongjun, Zhou Hongjun, Pierre Neveu, Neveu, Pierre   +24 more
core   +1 more source

The demosponge Leptomitus cf. L. lineatus, first occurence from the Middle Cambrian of Spain (Murero Formation, Western Iberian Chain)

, 2021
The Middle Cambrian Murero Formation in the Iberian Chain (NE Spain) has yielded a small collection of softbodied fossils (palaeoscolecid worms, onychophorans, algae), a host of fossils from organisms with mineralized skeletons such as trilobites and ...
Consejo Superior de Investigaciones Científicas (Espanya), García-Bellido Capdevila, D.   +1 more
core  

Swedish marine demosponge fauna (Porifera: Demospongiae) sampled 80 years after Jägerskiöld’s inventory

European Journal of Taxonomy
It has been 80 years since Leonard Axel Jägerskiöld’s thorough marine faunistic inventory of the Swedish west coast (1921-1938), which represents the latest update of the Swedish sponge marine fauna. In this study, we present an update of the demosponge
Raquel PEREIRA, Mats LARSSON, Paco CÁRDENAS, Mikael THOLLESSON   +3 more
doaj   +1 more source

Selenium affects biosilica formation in the demosponge Suberites domuncula

, 2005
Selenium is a trace element found in freshwater and the marine environment. We show that it plays a major role in spicule formation in the demosponge Suberites domuncula.
Mueller, I.M., Mueller, W.E.G., Borejko, A., Schroeder, H.C., Brandt, D., Xupeng, C., Ushijima, H., Osinga, R., Hamer, B., Krasko, A.   +9 more
core   +1 more source

Checklist of sponges (Porifera) at the shelf-break front of Argentina, SW Atlantic Ocean, with data on their settlement substrata

The European Zoological Journal
A checklist of the sponges recorded in Argentina’s shelf-break front between 37° and 45°S as well as the settlement substrates they used is provided here.
L. Schejter, C. Bremec, C. Cerrano, M. Bertolino, B. Calcinai   +4 more
doaj   +1 more source

FIG. 2. — Iophon terranovae n in Four new demosponge species from Terra Nova Bay (Ross Sea, Antarctica)

, 2000
FIG. 2. — Iophon terranovae n. sp.; A, paratype; B, C, thick ectosomal layer of vertically arranged acanthostyles (arrow) supported by the choanosomal reticulation; D, E, unequal ended bipocilla; F, G, bifid and hooked extremities of acanthostyles; H-J ...
Calcinai, Barbara, Pansini, Maurizio
core   +1 more source

Depth regulation in demosponge parenchymella larvae

, 1997
To assess factors that influence depth regulation of sponge larvae, we documented ontogenetic changes In larval size and shape, lipid and protein content, skeletal development, and photoresponse in Sigmadocia caerulea, a shallow-water demosponge in the
Young, Craig M., Maldonado, Manuel, Vaquerizo, Isabel, George, Sophie B.   +3 more
core  

Comparative CO2 and SiO2 hydratase activity of an enzyme from the siliceous demosponge Suberites domuncula [PDF]

Silicase, an enzyme that catalyzes the hydrolysis of silicon-oxygen bonds, is a crucial player in breaking down silicates into silicic acid, particularly in organisms like aquatic sponges with siliceous skeletons.
Clemente Capasso, Viviana De Luca, Andrea Angeli, Claudiu T. Supuran, Luigi Di Costanzo   +4 more
core   +1 more source

The cells of the ectosome of Demosponges

, 1975
No ...
openaire   +1 more source