Results 1 to 10 of about 1,483 (201)

Filtration Rates and Scaling in Demosponges [PDF]

open access: yesJournal of Marine Science and Engineering, 2022
Demosponges are modular filter-feeding organisms that are made up of aquiferous units or modules with one osculum per module. Such modules may grow to reach a maximal size.
Hans Ulrik Riisgård, Poul S. Larsen
doaj   +4 more sources

New genus and species of lithistid demosponges from submarine caves in Nuku Hiva (Marquesas Islands) and Tahiti Iti (Society Islands), French Polynesia [PDF]

open access: yesThe European Zoological Journal, 2021
Lithistid demosponges are well known from limestone caves of karstic origin in the Mediterranean Sea. However, they have never been reported from submarine caves of volcanic origin in the South Pacific. Here, we describe and provide DNA barcodes for four
Astrid Schuster   +2 more
exaly   +3 more sources

Brominated Skeletal Components of the Marine Demosponges, Aplysina cavernicola and Ianthella basta: Analytical and Biochemical Investigations

open access: yesMarine Drugs, 2013
Demosponges possess a skeleton made of a composite material with various organic constituents and/or siliceous spicules. Chitin is an integral part of the skeleton of different sponges of the order Verongida.
Hendrik Niemann   +2 more
exaly   +5 more sources

Deceptive Desmas: Molecular Phylogenetics Suggests a New Classification and Uncovers Convergent Evolution of Lithistid Demosponges [PDF]

open access: yesPLoS ONE, 2015
Reconciling the fossil record with molecular phylogenies to enhance the understanding of animal evolution is a challenging task, especially for taxa with a mostly poor fossil record, such as sponges (Porifera).
Astrid Schuster   +2 more
exaly   +4 more sources

On the Mechanical Properties of Microfibre-Based 3D Chitinous Scaffolds from Selected Verongiida Sponges [PDF]

open access: yesMarine Drugs, 2023
Skeletal constructs of diverse marine sponges remain to be a sustainable source of biocompatible porous biopolymer-based 3D scaffolds for tissue engineering and technology, especially structures isolated from cultivated demosponges, which belong to the ...
Tomas Duminis   +9 more
doaj   +2 more sources

Cytotoxic Compounds of Two Demosponges (Aplysina aerophoba and Spongia sp.) from the Aegean Sea

open access: yesBiomolecules, 2021
The class of demosponges is the biggest and most diverse of all described sponge species and it is reported to produce a plethora of chemically different metabolites with interesting biological activities.
Maria Orfanoudaki   +9 more
doaj   +2 more sources

Identification and Current Palaeobiological Understanding of “Keratosa”-Type Nonspicular Demosponge Fossils in Carbonates: With a New Example from the Lowermost Triassic, Armenia [PDF]

open access: yesLife, 2022
Structures similar to fossilized nonspicular demosponges have been reported in carbonates throughout the Phanerozoic and recently in rocks dating back to 890 Ma ago.
Cui Luo   +4 more
doaj   +2 more sources

Lithistid Demosponges of Deep-Water Origin in Marine Caves of the North-Eastern Mediterranean Sea

open access: yesFrontiers in Marine Science, 2021
Desmas-bearing demosponges known as lithistids have heavily silicified skeleton and occur typically in bathyal environments of warm and tropical areas but may be found in certain shallow marine caves.
Andrzej Pisera   +2 more
exaly   +3 more sources

First report of fossil “keratose” demosponges in Phanerozoic carbonates: preservation and 3-D reconstruction

open access: yesDie Naturwissenschaften, 2014
Fossil record of Phanerozoic non-spicular sponges, beside of being important with respect to the lineage evolution per se, could provide valuable references for the investigation of Precambrian ancestral animal fossils.
Cui Luo   +2 more
exaly   +2 more sources

miRNA Repertoires of Demosponges Stylissa carteri and Xestospongia testudinaria. [PDF]

open access: yesPLoS ONE, 2016
MicroRNAs (miRNAs) are small regulatory RNAs that are involved in many biological process in eukaryotes. They play a crucial role in modulating genetic expression of their targets, which makes them integral components of transcriptional regulatory ...
Yi Jin Liew   +3 more
doaj   +2 more sources

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