Results 31 to 40 of about 4,668 (201)

The trophic biology of the holothurian Molpadia musculus: implications for organic matter cycling and ecosystem functioning in a deep submarine canyon [PDF]

open access: yesBiogeosciences, 2010
Megafaunal organisms play a key role in ecosystem functioning in the deep-sea through bioturbation, bioirrigation and organic matter cycling. At 3500 m water depth in the Nazaré Canyon, NE Atlantic, very high abundances of the infaunal holothurian ...
A. Pusceddu   +5 more
doaj   +1 more source

Deep-sea holothurians (Echinodermata, Holothuroidea) from the Colombian Southern Caribbean Sea [PDF]

open access: yesCheck List, 2020
Fifteen morphotypes of deep-sea holothurians were documented by photography or videography at depths of 596–2,566 m, using Remote Operated Vehicles (ROV) video surveys and towed camera transects, during hydrocarbon exploratory activities in the
Giomar H. Borrero-Pérez   +3 more
doaj   +3 more sources

Holothurian Fucosylated Chondroitin Sulfate [PDF]

open access: yesMarine Drugs, 2014
Fucosylated chondroitin sulfate (FucCS) is a structurally distinct glycosaminoglycan found in sea cucumber species. It has the same backbone composition of alternating 4-linked glucuronic acid and 3-linked N-acetyl galactosamine residues within disaccharide repeating units as regularly found in mammalian chondroitin sulfates.
openaire   +3 more sources

Proteases from the regenerating gut of the holothurian Eupentacta fraudatrix. [PDF]

open access: yesPLoS ONE, 2013
Four proteases with molecular masses of 132, 58, 53, and 47 kDa were detected in the digestive system of the holothurian Eupentacta fraudatrix. These proteases displayed the gelatinase activity and characteristics of zinc metalloproteinases.
Nina E Lamash, Igor Yu Dolmatov
doaj   +1 more source

Widespread decline in the abundance of sea cucumber assemblages in atolls of the protected Rowley Shoals, northwestern Australia

open access: yesLimnology and Oceanography Letters, Volume 11, Issue 2, March 2026.
Abstract The Rowley Shoals, off northwestern Australia, are renowned as a biodiversity hotspot. This remote system comprises three atolls, Clerke, Imperieuse and Mermaid, which in recent years have been increasingly targeted by illegal fishing, a pressure rising across the Indo‐Pacific.
Inês Leal   +6 more
wiley   +1 more source

Untargeted Metabolomics Reveals Seasonal and Tissue‐Specific Metabolic Shifts in Holothuria cinerascens

open access: yesChemistry &Biodiversity, Volume 23, Issue 2, February 2026.
Untargeted metabolic profiling of three body tissues from Holothuria cinerascens in South Africa using 1H‐NMR and UPLC–QTOF–MS revealed distinct tissue‐specific and seasonal metabolic variations, with the body wall and gut/mesentery exhibiting high metabolite diversity.
Cassandra Upton   +3 more
wiley   +1 more source

Structural Characterization and Profiles of Saponins from Two Algerian Sea Cucumbers

open access: yesMolecules
Sea cucumbers are benthic marine invertebrate members of the phylum Echinodermata. Due to the absence of a rigid skeleton, these species have developed chemical defenses based on the production of saponins (triterpene glycosides).
Ihcene Khodja   +5 more
doaj   +1 more source

Physiological and Behavioral Plasticity of the Sea Cucumber Holothuria forskali (Echinodermata, Holothuroidea) to Acidified Seawater

open access: yesFrontiers in Physiology, 2018
Research into the effects of reduced pH caused by rising CO2 on echinoderms has been strongly biased toward those groups which rely heavily on calcification, such as sea urchins.
Xiutang Yuan   +9 more
doaj   +1 more source

Carbonate sedimentology: An evolved discipline

open access: yesThe Depositional Record, Volume 12, Issue 1, February 2026.
Abstract Although admired and examined since antiquity, carbonate sediment and rock research really began with Charles Darwin who, during a discovery phase, studied, documented and interpreted their nature in the mid‐19th century. The modern discipline, however, really began after World War II and evolved in two distinct phases.
Noel P. James, Peir K. Pufahl
wiley   +1 more source

CCFF‐Net: Cross‐Channel Feature Fusion Network for Underwater Object Detection

open access: yesIET Image Processing, Volume 20, Issue 1, January/December 2026.
Challenging underwater environmental conditions lead to severe degradation of underwater images, such as intensity attenuation and colour distortion. This issue causes incomplete feature representation of underwater objects, posing difficulties to state‐of‐the‐art detectors.
Zhe Chen   +3 more
wiley   +1 more source

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