Results 71 to 80 of about 25,912 (254)

New Sesterterpenes from the Antarctic Sponge Suberites sp.

open access: yesMarine Drugs
Chemical investigation of the Antarctic sponge Suberites sp. has previously led to the identification of new suberitane derivatives, some of which show bioactivity toward respiratory syncytial virus (RSV).
Stine S. H. Olsen   +7 more
doaj   +1 more source

Calcisponges have a ParaHox gene and dynamic expression of dispersed NK homeobox genes [PDF]

open access: yes, 2014
This study was funded by the Sars Centre core budget to M. Adamska. Sequencing was performed at the Norwegian High Throughput Sequencing Centre funded by the Norwegian Research Council. O.M.R. and D.E.K.F.
A Saudemont   +27 more
core   +2 more sources

A Baseline for the Conservation of the Native and Protected Centrostephanus longispinus (Philippi, 1845) and the Management of the Invasive Diadema setosum (Leske, 1778) (Echinoidea: Diadematidae) in the Mediterranean Sea

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 5, May 2025.
ABSTRACT Centrostephanus longispinus (Echinodermata: Echinoidea) is an endemic and protected sea urchin species of the Mediterranean Sea. Another long‐spined sea urchin, Diadema setosum from the Red Sea, entered the Mediterranean Sea in 2006 and rapidly spread throughout the eastern basin. As a keystone competitive grazer, D.
Marchesi Veronica   +8 more
wiley   +1 more source

The impact of Rapido trawling for scallops, Pecten jacobaeus (L.), on the benthos of the Gulf of Venice [PDF]

open access: yes, 1999
Rapido trawls are used to catch sole around the coast of Italy and to catch scallops in the northern Adriatic Sea but little is known about the environmental impact of this gear.
Atkinson, RJA   +3 more
core   +1 more source

DNA State Influences the Uptake and Persistence of Environmental DNA by Marine Sponge Natural Samplers

open access: yesEcology and Evolution, Volume 15, Issue 5, May 2025.
We present results from a mesocosm experiment testing the utility of marine sponges as natural samplers of eDNA and show the effect of DNA state on the capture and persistence of genetic material. We find a significant interaction between DNA state and sample type, with lower detection and concentration of extracellular DNA, compared to cellular DNA ...
Rosalie Dowell   +4 more
wiley   +1 more source

Patterns of Sponge Abundance Across a Gradient of Habitat Quality in the Wakatobi Marine National Park, Indonesia [PDF]

open access: yes, 2011
Sponges are important components of reef communities worldwide, fulfilling a number of important functional roles. Habitat degradation caused by the loss of hard corals has the potential to cause increases in sponge abundance and percentage cover as they
Bell, JJ   +3 more
core   +1 more source

Quantifying the Temporal Dynamics of Marine Biodiversity Under Anthropogenic Impacts Using eDNA Metabarcoding

open access: yesEnvironmental DNA, Volume 7, Issue 3, May–June 2025.
This study uses eDNA to explore marine biodiversity changes under anthropogenic impacts, with a focus on marine community dynamics. Through the use of eDNA metabarcoding, the research identified 814 ASVs across 617 marine families, noting drastic changes in biological communities over time, with different species dominating during different phases of ...
Zhewei Si   +8 more
wiley   +1 more source

Exploring depth‐related patterns of sponge diversity and abundance in marginal reefs

open access: yesEcology and Evolution
Marine sponges play a vital role in the reef's benthic community; however, understanding how their diversity and abundance vary with depth is a major challenge, especially on marginal reefs in areas deeper than 30 m.
Juliano Morais   +4 more
doaj   +1 more source

The Mechanisms of Codon Reassignments in Mitochondrial Genetic Codes [PDF]

open access: yes, 2007
Many cases of non-standard genetic codes are known in mitochondrial genomes. We carry out analysis of phylogeny and codon usage of organisms for which the complete mitochondrial genome is available, and we determine the most likely mechanism for codon ...
A Reyes   +74 more
core   +4 more sources

Physiology and Evolution of Voltage-Gated Calcium Channels in Early Diverging Animal Phyla: Cnidaria, Placozoa, Porifera and Ctenophora

open access: yesFrontiers in Physiology, 2016
Voltage-gated calcium (Cav) channels serve dual roles in the cell, where they can both depolarize the membrane potential for electrical excitability, and activate transient cytoplasmic Ca2+ signals.
A. Senatore, Hamad Raiss, Phuong Le
semanticscholar   +1 more source

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