Results 81 to 90 of about 4,207 (201)

Localization and Characterization of Ferritin in Demospongiae: A Possible Role on Spiculogenesis [PDF]

open access: yesMarine Drugs, 2014
Iron, as inorganic ion or as oxide, is widely used by biological systems in a myriad of biological functions (e.g., enzymatic, gene activation and/or regulation). In particular, marine organisms containing silica structures—diatoms and sponges—grow preferentially in the presence of iron. Using primary sponge cell culture from S. domuncula–primmorphs—
Filipe Natalio   +4 more
openaire   +3 more sources

A New Diketopiperazine, Cyclo-(4-S-hydroxy-R-proline-R-isoleucine), from an Australian Specimen of the Sponge Stelletta sp.

open access: yesMarine Drugs, 2011
While investigating the cytotoxic activity of the methanol extract of an Australian marine sponge Stelletta sp. (Demospongiae), a new diketopiperazine, cyclo-(4-S-hydroxy-R-proline-R-isoleucine) (1), was isolated together with the known bengamides; A (2),
Dianne M. Tapiolas   +6 more
doaj   +1 more source

Two new Auletta Schmidt, 1870 (Axinellidae; Demospongiae; Porifera) from Brazil

open access: yes, 2017
Cavalcanti, Thaynã, Recinos, Radharanne, Pinheiro, Ulisses (2017): Two new Auletta Schmidt, 1870 (Axinellidae; Demospongiae; Porifera) from Brazil. Zootaxa 4273 (1): 121-130, DOI: https://doi.org/10.11646/zootaxa.4273.1.
Pinheiro, Ulisses   +5 more
core   +1 more source

Transcriptomic Insights Into the Immune Repertoire of an Antarctic Sponge

open access: yesEcology and Evolution, Volume 15, Issue 12, December 2025.
Antarctic marine sponges are essential components of the benthic fauna, playing a crucial role in structuring this ecosystem through their own biological activities and their symbiotic relationships with diverse microorganisms. Yet, the transcriptional repertoire and the immune responses associated with interactions with microorganisms in this unique ...
Leslie K. Daille   +3 more
wiley   +1 more source

Microbial diversity in four Mediterranean irciniid sponges [PDF]

open access: yesBiodiversity Data Journal
This paper describes a dataset of microbial communities from four different sponge species: Ircinia oros (Schmidt, 1864), Ircinia variabilis (Schmidt, 1862), Sarcotragus spinosulus Schmidt, 1862 and Sarcotragus fasciculatus (Pallas, 1766).
Katerina Skaraki   +6 more
doaj   +3 more sources

Host Evolutionary History Drives Prokaryotic Diversity in the Globally Distributed Sponge Family Petrosiidae

open access: yesMolecular Ecology, Volume 34, Issue 24, December 2025.
ABSTRACT Sponge microbial communities play a crucial role in marine ecosystem functioning and serve as a rich source of bioactive compounds. While host identity is recognised as a major determinant of microbiome diversity, the underlying evolutionary mechanisms remain poorly understood. This study aimed to comprehensively assess phylosymbiosis patterns
N. van der Windt   +7 more
wiley   +1 more source

Growth Efficiency and Carbon Balance for the Sponge Haliclona oculata

open access: yes, 2009
To obtain more knowledge about carbon requirements for growth by sponges, the growth rate, respiration rate, and clearance rate was measured in situ in Haliclona oculata. We found that only 34% of the particulate carbon pumped through the sponge was used
Marieke Koopmans   +5 more
core   +1 more source

The Biodiversity of Peter I Island—The Most Remote Island in the World

open access: yesEcology and Evolution, Volume 15, Issue 11, November 2025.
Peter I Island is one of the most isolated and least visited islands on earth; lying within the Antarctic Polar Front but over 420 km from continental Antarctica. Here we assess the biodiversity of the island from both previous records and our own BioBlitz in January 2022.
Michelle Jackson   +10 more
wiley   +1 more source

Diversity and Species Composition of Sponges (Porifera: Demospongiae) in Reef Flat of Barranglompo Island

open access: yes, 2020
Sponge is one of the biota that makes up coastal and marine ecosystems, especially in coral reef ecosystems and seagrass beds in both tropical and subtropical waters.
Nurafni, Nurafni   +3 more
core   +1 more source

Phylogenetic classification of the Halichondrids (Porifera, Demospongiae).

open access: yesBeaufortia, 1990
Using a multicharacter approach and numerical cladistic computer programs a phylogenetic analysis is made of a newly defined order Halichondrida (which includes all Halichondrida and parts of the Axinellida sensu Lévi, 1973), with emphasis on the newly defined family Halichondriidae (which includes the families Halichondriidae and Hymeniacidonidae ...
R.W.M van Soest (Rob)   +2 more
openaire   +2 more sources

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