Results 71 to 80 of about 17,957 (220)

Evolution of Allorecognition in the Tunicata

open access: yesBiology, 2020
Allorecognition, the ability to distinguish self or kin from unrelated conspecifics, plays several important biological roles in invertebrate animals. Two of these roles include negotiating limited benthic space for colonial invertebrates, and inbreeding
Marie L. Nydam
doaj   +1 more source

AlkaPlorer: A database‐driven explorer for natural alkaloids and derivatives

open access: yesJournal of Integrative Plant Biology, Volume 68, Issue 5, Page 1384-1398, May 2026.
The alkaloid database AlkaPlorer integrates over 130,000 compounds across 12,250 species. By linking chemical structures with biological and evolutionary data, it reveals how these molecules evolve and function. This platform serves as a vital resource for AI‐driven discovery in plant metabolism and modern drug development. ABSTRACT Alkaloids, renowned
Jiahao Li   +5 more
wiley   +1 more source

Evaluation of Catch Performance and Environmental Impact of Technical Gear Modifications for a More Sustainable Scallop Dredging Fishery

open access: yesAquaculture, Fish and Fisheries, Volume 6, Issue 2, April 2026.
Catch and environmental performance of modified scallop dredge designs were assessed. Skid belly bags increased scallop catch by 14%–19% and reduced gear wear. N‐Virodredge reduced catch of scallop juveniles and sorting time. Gear footprint on the seabed was reduced by 50% for skid belly bags. N‐Virodredge cut fuel use by 30%, reducing carbon emissions
Blair Easton   +6 more
wiley   +1 more source

Rubrolides A, D, P, T, U: Total Syntheses and Antibacterial Evaluation of Highly Brominated Marine Natural Products

open access: yesChemistryEurope, Volume 4, Issue 4, April 2026.
Following the Danube Flow. The first total syntheses of highly brominated rubrolides T, U, and U‐analog, together with the efficient and divergent syntheses of rubrolides A, D, and P. The dibrominated key intermediate, obtained via a Suzuki‐Miyaura cross‐coupling reaction, is the centerpiece of the synthesis.
Jasmin Janneschütz   +7 more
wiley   +1 more source

Isolamento e atividades biológicas de produtos naturais das esponjas monanchora arbuscula, aplysina sp. petromica ciocalyptoides e topsentia ophiraphidites, da ascídia didemnum ligulum e do octocoral carijoa riisei Isolantion and biological activities of secondary metabolites from the sponges monanchora aff. arbuscula, aplysina sp. petromica ciocalyptoides and topsentia ophiraphidies, from the ascidian didemnum ligulum and from the octocoral carijoa riisei

open access: yesQuímica Nova, 2007
The investigation of extracts from six species of marine invertebrates yielded one new and several known natural products. Isoptilocaulin from the sponge Monanchora aff.
Miriam H. Kossuga   +21 more
doaj   +1 more source

An otx/nodal regulatory signature for posterior neural development in ascidians. [PDF]

open access: yesPLoS Genetics, 2014
In chordates, neural induction is the first step of a complex developmental process through which ectodermal cells acquire a neural identity. In ascidians, FGF-mediated neural induction occurs at the 32-cell stage in two blastomere pairs, precursors ...
Agnès Roure   +2 more
doaj   +1 more source

The Amphioxus SoxB Family: Implications for the Evolution of Vertebrate Placodes [PDF]

open access: yes, 2007
Cranial placodes are regions of thickened ectoderm that give rise to sense organs and ganglia in the vertebrate head. Homologous structures are proposed to exist in urochordates, but have not been found in cephalochordates, suggesting the first chordates
Bronner-Fraser, Marianne   +1 more
core   +1 more source

Addressing a Flat‐Out Problem: Environmental DNA (eDNA) Exposes Silent Infestations of Acropora‐Eating Flatworms (Prosthiostomum acroporae) in Coral Aquaculture

open access: yesEcology and Evolution, Volume 16, Issue 4, April 2026.
Captive coral aquaculture is increasingly important for both the aquarium trade and reef restoration, but production can be undermined by hard‐to‐detect pests such as the Acropora‐eating flatworm Prosthiostomum acroporae. We developed and validated a highly sensitive ddPCR assay capable of detecting P.
Clare M. Grimm   +4 more
wiley   +1 more source

Feeding cessation alters host morphology and bacterial communities in the ascidian Pseudodistoma crucigaster [PDF]

open access: yes, 2016
11 páginas, 2 tablas, 7 figurasBackground: Ascidians can associate with abundant and diverse consortia ofmicrobial symbionts, yet these communities remain unexamined for the majority of host ascidians and little is known about host-symbiont interactions.
Erwin, Patrick M.   +2 more
core   +1 more source

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