Results 41 to 50 of about 790 (166)
Molecular and morphological congruence of three new cryptic Neopetrosia spp. in the Caribbean [PDF]
PeerJ, 2019 Neopetrosia proxima (Porifera: Demospongiae: Haplosclerida) is described as a morphologically variable sponge common on shallow reefs of the Caribbean. However, the range of morphological and reproductive variation within putative N.
Jan Vicente +3 more
doaj +2 more sources
Seventeen new complete mtDNA sequences reveal extensive mitochondrial genome evolution within the Demospongiae. [PDF]
PLoS ONE, 2008 Two major transitions in animal evolution--the origins of multicellularity and bilaterality--correlate with major changes in mitochondrial DNA (mtDNA) organization.
Xiujuan Wang, Dennis V Lavrov
doaj +1 more source
Sedimentology, EarlyView.ABSTRACT Filamentous, anastomosing spar‐filled networks in Phanerozoic carbonates have been interpreted as the mineralised remains of keratose (non‐spiculate) sponges, yet their recognition remains contested because fabrics of broadly similar appearance may arise from microbial, diagenetic or physical processes. This study combines direct fossil–modern
Jeong‐Hyun Lee +2 more
wiley +1 more source
Biopolymers, Volume 117, Issue 5, September 2026.The two phosphorylation sites within the Gab1 fragment 142‐203 exhibit distinct structural characteristics. Tyr162 is in a disordered region, Y183 in a helical segment. ABSTRACT The biological function of intrinsically disordered proteins is frequently coupled to short linear motifs, which serve as protein binding sites.
Anne Dietrich +5 more
wiley +1 more source
Deceptive desmas: molecular phylogenetics suggests a new classification and uncovers convergent evolution of lithistid demosponges. [PDF]
PLoS 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 +6 more
doaj +1 more source
Rethinking Plasticity in Sponges
Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, Volume 346, Issue 6, Page 431-446, September 2026.This systematic review critiques the conceptual confusion caused by the indiscriminate use of “plasticity” in Porifera literature, revealing that researchers often overlook genetic variability and fail to distinguish between real‐time environmental responses and natural selection.
Laura Oliveira, Emilio Lanna
wiley +1 more source
Reproduction and Development in Calcareous Sponges: A Panorama of the Last Two Centuries
Molecular Reproduction and Development, Volume 93, Issue 7, July 2026.ABSTRACT Nearly 200 years ago, scientists began examining reproductive cells in calcareous sponges (Calcarea, Porifera). Since then, 238 studies have been published, encompassing descriptions of gametes and embryos (including ultrastructural studies), life history, asexual reproduction, regeneration, and molecular aspects of development.
Bruno Cajado, Emilio Lanna
wiley +1 more source
CO I barcoding reveals new clades and radiation patterns of Indo-Pacific sponges of the family Irciniidae (Demospongiae: Dictyoceratida). [PDF]
PLoS ONE, 2010 DNA barcoding is a promising tool to facilitate a rapid and unambiguous identification of sponge species. Demosponges of the order Dictyoceratida are particularly challenging to identify, but are of ecological as well as biochemical importance.Here we ...
Judith Pöppe +4 more
doaj +1 more source
On the dissolution of sponge silica: Assessing variability and biogeochemical implications
Frontiers in Marine Science, 2022 The dissolution of the biogenic silica that constitutes the skeletons of silicifying organisms is an important mechanism for regenerating dissolved silicon in the ocean.
Manuel Maldonado +8 more
doaj +1 more source