Results 51 to 60 of about 3,049 (206)

Assessment of the Biogeography and Molecular Phylogenetics of Sea Cucumbers (Echinodermata: Holothuroidea) in South Africa

open access: yesJournal of Biogeography, Volume 53, Issue 6, June 2026.
ABSTRACT Aim The biogeography and evolution of South African sea cucumbers have been previously explored; however, these aspects lack detailed study. This study (1) explores the biogeography of sea cucumbers along the coastline of South Africa (SA) and (2) presents a preliminary molecular phylogeny based on the mitochondrial 16S marker.
Jessica S. Victorino   +3 more
wiley   +1 more source

Structural Analogues of Lanosterol from Marine Organisms of the Class as Potential Inhibitors of Human and Lanosterol 14α-demethylases

open access: yesNatural Product Communications, 2017
Lanosterol 14α-demethylases (hemoproteins of the cytochrome P450(51) family) are involved in biosynthesis of different membrane sterols, including animal cholesterol, fungal ergosterol and C24-modified plant and protozoa sterols.
Leonid A. Kaluzhskiy   +10 more
doaj   +1 more source

Taxonomy and phylogeny of the ‘football stars’ (Asteroidea, Sphaerasteridae) [PDF]

open access: yesJournal of Systematic Palaeontology, 2021
The phylogenetic relationships of spherical and sub-spherical asteroids, belonging to the valvatidan family Sphaerasteridae (Early Jurassic–Recent), are revised in the light of abundant new fossil ...
openaire   +2 more sources

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

Asteroidea

open access: yes, 1938
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

JENIS-JENIS BINTANG LAUT (ASTEROIDEA) DI ZONA INTERTIDAL PANTAI KOLAGANA KOTA BAUBAU

open access: yes, 2023
Anggota Echinodermata sering ditemukan pada zona intertidal yang dipengaruhi oleh faktor fisik maupun faktor kimia dimana mendukung keberadaan organisme filum ini termasuk anggota Asteroidea (Bintang laut).
Kusrini, Kusrini, Sidi, Azhar Muh
core  

Deep-water Asteroidea (Echinodermata) collected during the TALUD cruises in the Gulf of California, Mexico

open access: yesRevista Mexicana de Biodiversidad, 2011
During a series of cruises aboard the R/V “El Puma” aimed at collecting the deep-water benthic and pelagic fauna off the Pacific coast of Mexico, in the eastern Pacific, samples of Asteroidea were collected below 500 m depth (587-1 526 m). A total of 335
Michel E. Hendrickx   +2 more
doaj   +1 more source

SOWHAT constraint tree - Asteroidea and Echinozoa

open access: yes, 2015
The SOWH test was implemented using the sowhat software package, with the following command: “perl sowhat --constraint=Alternate.hypo.tre --aln=supermatrix.dense.phylip --model=PROTGAMMAWAG --dir=outDir --name=outFile --rax='raxmlHPC-PTHREADS-SSE3 -T 16'
Dunn, Casey   +7 more
core   +1 more source

Preliminary Phylogeny of the Forcipulatacean Asteroidea [PDF]

open access: yesAmerican Zoologist, 2000
NH-Invertebrate Zoology ; NMNH ; Peer ...
openaire   +1 more source

Marine trophic architecture and hidden ecological connections in the Strait of Magellan: keystone species and ecosystem resilience

open access: yesOikos, Volume 2026, Issue 4, April 2026.
Understanding the ecological implications of species coexistence is central to biodiversity studies and to identify environmental and anthropogenic drivers of ecosystem dynamics, where ecological network analysis offers valuable insights. This study examines the complexity, structure, and potential responses to disturbances of the Strait of Magellan's ...
Claudia D. Andrade   +4 more
wiley   +1 more source

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