Results 71 to 80 of about 10,332 (207)

SITOTOKSISITAS EKSTRAK KASAR ASCIDIAN DARI PULAU BUNAKEN [PDF]

open access: yes, 2014
Ekstrak metanolik dari koloni ascidian yang dikoleksi dari perairan Pulau Bunaken, Sulawesi Utara Indonesia menghasilakan enam sampel (Sampel 1 – 6). Dari bioassay antimikroba dan uji sitotoksik, Sampel 1 memperlihatkan aktivitas sitotoksik yang tinggi
Sumilat, Deiske Adeliene   +2 more
core   +1 more source

Rates of ascidian mediated nitrogen cycling

open access: yes, 2021
Large solitary ascidians, like Herdmania grandis (Heller), can dominate the benthic substrates of subtropical and temperate reefs, however their influence on nitrogen cycling, particularly nitrous oxide (N2O) production, is unknown.
Erler, Dirk, Kelly, Katie
core   +1 more source

Marine-Derived 2-Aminoimidazolone Alkaloids. Leucettamine B-Related Polyandrocarpamines Inhibit Mammalian and Protozoan DYRK & CLK Kinases

open access: yesMarine Drugs, 2017
A large diversity of 2-aminoimidazolone alkaloids is produced by various marine invertebrates, especially by the marine Calcareous sponges Leucetta and Clathrina.
Nadège Loaëc   +16 more
doaj   +1 more source

Patterns of Autonomous and Conditional Neural Specification for the Brain and Ventral Nerve Cord in Annelida

open access: yesEvolution &Development, Volume 28, Issue 3, September 2026.
Diagrams of blastomere isolations in Capitella teleta and Platynereis dumerilii showing autonomous head neural tissue (from 1q) and trunk neural tissue (from 2d) as well as a decoupling of D–V axis formation from trunk neural tissue in annelids. ABSTRACT Evolution of central nervous systems is a long‐debated topic.
Nicole B. Webster   +5 more
wiley   +1 more source

Effects of Thermal Stress on Ascidian Larval Development

open access: yes, 2023
Rising ocean temperatures caused by climate change have the potential to cause detrimental effects to the development of many marine organisms. Numerous species of ascidians have been shown to undergo faster rates of larval development when subject to ...
Shonat, Madeline, Megan, Powers
core  

The genetic program to specify ectodermal cells in ascidian embryos [PDF]

open access: yes, 2020
The ascidian belongs to the sister group of vertebrates and shares many features with them. The gene regulatory network (GRN) controlling gene expression in ascidian embryonic development leading to the tadpole larva has revealed evolutionarily conserved
Boqi Liu   +3 more
core   +1 more source

Circumglobal Distribution of the Benthic Ctenophore Vallicula multiformis (Rankin 1956), Documented Through Diverse Observation Types

open access: yesJournal of Biogeography, Volume 53, Issue 9, September 2026.
ABSTRACT Aim To improve our understanding of the distribution of Vallicula multiformis, we integrate a series of diverse observation types, including citizen science records, published literature, metagenomic datasets, published sequences, and newly acquired material, to evaluate whether geographically isolated records reflect a single broadly ...
Nicholas Bezio   +5 more
wiley   +1 more source

Macroalgae and Bivalve Interactions: A Review of Trophic and Feeding Studies to Assess the Contribution of Macroalgal Detritus to Bivalves

open access: yesReviews in Aquaculture, Volume 18, Issue 4, September 2026.
ABSTRACT There is growing interest in the co‐culture of macroalgae and filter‐feeding bivalves due to anticipated trophic benefits that may enhance the productivity of both organisms. Detritus from cultured macroalgae has the potential to supplement bivalve diets, yet few studies have directly examined this relationship in co‐culture systems.
Fiona P. MacKechnie, Andrew G. Jeffs
wiley   +1 more source

Consumer diversity drives stronger predation in tropical marine communities

open access: yesEcography, Volume 2026, Issue 8, August 2026.
Biotic interactions are predicted to be stronger in the tropics compared to higher latitudes, contributing to observed patterns of global biodiversity. While increased consumer diversity and more complex food webs are expected in tropical communities, the trophic dynamics underlying strong regional effects of predation are not well understood.
Michele F. Repetto   +4 more
wiley   +1 more source

Emerging pharmaceutical therapies of Ascidian-derived natural products and derivatives

open access: yes, 2023
In a growing multidrug-resistant environment, the identification of potential new drug candidates with an acceptable safety profile is a substantial crux in pharmaceutical discovery. This review discusses several aspects and properties of approved marine
Van Poucke, Christof   +6 more
core   +1 more source

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