Results 51 to 60 of about 830 (176)

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

Modeling Benthic Animals in Space and Time Using Bayesian Point Process With Cross Validation: The Case of Holoturians

open access: yesEnvironmetrics, Volume 37, Issue 3, April 2026.
ABSTRACT Holothurian populations in the Mediterranean are relatively understudied, with limited knowledge of their spatial distribution, habitat preferences, and ecological dynamics, making their monitoring a key challenge for ecosystem assessment and sustainable management.
Daniele Poggio   +6 more
wiley   +1 more source

Chemical Defense Mechanisms and Ecological Implications of Indo-Pacific Holothurians

open access: yesMolecules, 2020
Sea cucumbers are slow-moving organisms that use morphological, but also a diverse combination of chemical defenses to improve their overall fitness and chances of survival.
Elham Kamyab   +3 more
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

Updated checklist of the Northern Persian Gulf and Oman Sea holothurians [PDF]

open access: yesCaspian Journal of Environmental Sciences
Holothurians are detritus feeder Echinoderms, live in different marine zones and play ecological roles in the marine ecosystems. The first research on the Echinoderms in the Persian Gulf took place in 1908 by Koehler and Vaney and was used as basis for ...
Sayyed Mohammadreza Fatemi   +1 more
doaj   +1 more source

Characterization of the complete mitochondrial genome of Thyonella gemmata (Echinodermata: Cucumariidae)

open access: yesMitochondrial DNA. Part B. Resources, 2021
Thyonella gemmata , also known as the Green sea cucumber, is a biomedically and ecologically important species. In this study, the complete mitogenome of T. gemmata (Echinodermata: Holothuroidea) collected from the Florida Panhandle, USA is reported. The
Alexia C. Figueroa   +5 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

YOLOViT‐DETECT: A Hybrid Approach for Real‐Time Fish Species Detection and Classification in Aquaculture

open access: yesIET Image Processing, Volume 20, Issue 1, January/December 2026.
We propose YOLOViT‐DETECT, a hybrid model combining an enhanced YOLOv8 with a spatial attention module for fish detection and a ViT‐B/16 transformer for species classification. The method achieves high accuracy in challenging underwater environments, outperforming standalone models.
Mahdi Hamzaoui   +3 more
wiley   +1 more source

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