Results 71 to 80 of about 1,652 (201)

Coralline demosponges ; a geobiological portrait

, 2001
The polyphyletic coralline demosponges possess a calcareous basal skeleton of 4 major morphotypes. Each has its own phylogenetic history, with different mechanisms of formation. One extant taxon of each skeletal type has been investigated, and its biochemical (e.g., intracrystalline organic matrix proteins), geochemical (e.g., stable isotopes), and ...
Reitner, Joachim, Wörheide, Gert, Lange, Robert, Schumann-Kindel, Gabriela   +3 more
openaire   +2 more sources

Cytotoxicity and Glycan-Binding Properties of an 18 kDa Lectin Isolated from the Marine Sponge <em>Halichondria </em><em>o</em><em>kadai</em>

Toxins, 2012
A divalent cation-independent lectin—HOL-18, with cytotoxic activity against leukemia cells, was purified from a demosponge, <em>Halichondria okadai</em>. HOL-18 is a 72 kDa tetrameric lectin that consists of four non-covalently bonded 18 kDa
Yasuhiro Ozeki, Jiharu Hamako, Taei Matsui, Kazuo Nitta, Masahiro Hosono, Shigeki Sugawara, Chang Hun Im, Yukiko Ogawa, Hidetaro Yasumitsu, Robert A. Kanaly, Sarkar M. A. Kawsar, Yuki Fujii, Ryo Matsumoto, Chihiro Iwahara, Imtiaj Hasan, Yasuhiro Koide   +15 more
doaj   +1 more source

Sponge community of the western Black Sea shallow water caves: diversity and spatial distribution [PDF]

PeerJ, 2018
Marine caves possess unique biocoenotic and ecological characteristics. Sessile benthic species such as sponges associated with cave habitats typically show a marked zonation from the cave entrance towards the end of the cave.
Alexander Ereskovsky, Oleg A. Kovtun, Konstantin K. Pronin, Apostol Apostolov, Dirk Erpenbeck, Viatcheslav Ivanenko   +5 more
doaj   +2 more sources

A Comprehensive DNA Barcode Reference Library for the Macroinvertebrates of Scottish Seagrass Beds Using Oxford Nanopore Flongle Flowcells

Ecology and Evolution, Volume 15, Issue 10, October 2025.
In this study we use ONT Flongle Flowcells to produced DNA barcodes for 146 seagrass associated marine invertebrate OTUs collected from four seagrass beds in Scotland, targeting COI and 18S V4 regions. We generate the first DNA barcode reference library for seagrass beds in Scotland to support future biomonitoring of these priority habitats.
E. G. Ross, S. B. Piertney, J. D. Sigwart, N. F. Crook, A. Moreau, K. K. S. Layton   +5 more
wiley   +1 more source

FIG. 7. — Microxina lanceolata n in Four new demosponge species from Terra Nova Bay (Ross Sea, Antarctica)

, 2000
FIG. 7. — Microxina lanceolata n. sp.; A, straight oxeas; B, sigmas; C, oxea extremities. Scale bars: A, 100 µm; B, C, 50 µm.Published as part of Calcinai, Barbara & Pansini, Maurizio, 2000, Four new demosponge species from Terra Nova Bay (Ross Sea ...
Calcinai, Barbara, Pansini, Maurizio
core   +1 more source

Genome-wide analysis of the sox family in the calcareous sponge Sycon ciliatum: multiple genes with unique expression patterns

EvoDevo, 2012
Background Sox genes are HMG-domain containing transcription factors with important roles in developmental processes in animals; many of them appear to have conserved functions among eumetazoans.
Fortunato Sofia, Adamski Marcin, Bergum Brith, Guder Corina, Jordal Signe, Leininger Sven, Zwafink Christin, Rapp Hans, Adamska Maja   +8 more
doaj   +1 more source

Developmental expression of transcription factor genes in a demosponge: insights into the origin of metazoan multicellularity

, 2006
Demosponges are considered part of the most basal evolutionary lineage in the animal kingdom. Although the sponge body plan fundamentally differs from that of other metazoans, their development includes many of the hallmarks of bilaterian and eumetazoan ...
Milena Gongora, Danielle Liubicich, Worheide, Gert, Hinman, Veronica F., Claire Larroux, Leys, Sally P., Gongora, Milena, Larroux, Claire, Bryony Fahey, Liubicich, Danielle, Bernard M. Degnan, Gert Wörheide, Gauthier, Marie, Veronica F. Hinman, Kathryn Green, Degnan, Bernard M., Marie Gauthier, Sally P. Leys, Green,Kathryn, Fahey, Bryony   +19 more
core   +1 more source

Body Polarity and Mineral Selectivity in the Demosponge Chondrosia reniformis

The Biological Bulletin, 1998
The skeleton of the common Mediterranean demosponge Chondrosia reniformis lacks endogenous spicules; but exogenous siliceous material is selectively incorporated into its collagenous ectosome, strengthening this layer. Nevertheless, the settling of sponge buds during asexual reproduction necessitates an active incorporation of the calcareous substratum
BAVESTRELLO, GIORGIO, BENATTI, UMBERTO, CALCINAI B., CATTANEO VIETTI R., CERRANO C., GIOVINE, MARCO, GIOVINE M., LANZA S., PRONZATO, ROBERTO, SARÀ M.   +9 more
openaire   +5 more sources

3D Chitin Scaffolds of Marine Demosponge Origin for Biomimetic Mollusk Hemolymph-Associated Biomineralization Ex-Vivo

Marine Drugs, 2020
Structure-based tissue engineering requires large-scale 3D cell/tissue manufacture technologies, to produce biologically active scaffolds. Special attention is currently paid to naturally pre-designed scaffolds found in skeletons of marine sponges, which
Marcin Wysokowski, Tomasz Machałowski, Iaroslav Petrenko, Christian Schimpf, David Rafaja, Roberta Galli, Jerzy Ziętek, Snežana Pantović, Alona Voronkina, Valentine Kovalchuk, Viatcheslav N. Ivanenko, Bert W. Hoeksema, Cristina Diaz, Yuliya Khrunyk, Allison L. Stelling, Marco Giovine, Teofil Jesionowski, Hermann Ehrlich   +17 more
doaj   +1 more source

Post‐Embryonic Development and Formation of the Heterocoelic Aquiferous System in Two Species of Calcareous Sponges (Calcarea, Porifera)

Molecular Reproduction and Development, Volume 92, Issue 10, October 2025.
ABSTRACT We characterized the morphogenetic processes of larval metamorphosis and the development of the olynthus and heterocoelic aquiferous system (AS) in Sycettusa hastifera (syconoid) and Paraleucilla magna (leuconoid) (Porifera, Calcarea). Metamorphosis and development up to the olynthus were similar in both species.
Emilio Lanna, Michelle Klautau
wiley   +1 more source