Results 41 to 50 of about 16,885 (220)

Method‐dependent differences in zooplankton abundance and size metrics: Microscopy vs. ZooScan

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Image‐based approaches such as ZooScan are increasingly used for high‐throughput zooplankton monitoring. However, quantitative evaluations of methodological differences relative to conventional microscopy remain limited. In this study, zooplankton abundance and size‐based metrics obtained from microscopy and ZooScan image analysis were ...
Young Seok Jeong   +4 more
wiley   +1 more source

Testing the effectiveness of the mt DNA Cytochrome c oxidase subunit 1 (COI) gene locus for identifying species of Polychaete worm (Polychaeta: Annelida) in New Zealand [PDF]

open access: yes, 2006
The ability to accurately identify species is fundamental to ecological research and environmental monitoring. Current taxonomic identifications often rely on differentiation of morphologically ambiguous characters, and a process of categorization which ...
Brett, Christy Donna
core  

Hirudinea (Annelida) Fauna of Some Wetlands in Bingöl Province

open access: yesTürkiye Parazitoloji Dergisi, 2022
Objective:Leeches are important and reliable indicators of water quality and biodiversity in the ecosystem, so the presence of specific leech species is often closely related to basic water conditions and the presence of certain animals.
Tuba Elaltunkara   +3 more
doaj   +1 more source

First Record of Bioluminescence in a Sipunculan Worm

open access: yesFrontiers in Marine Science, 2021
During a search for bioluminescent marine annelids around the island of Carrie Bow Cay, Belize, we discovered bioluminescence in the sipunculan worm Nephasoma pellucidum. The identification of N. pellucidum was verified by DNA barcoding of ∼650 bp of the
Anderson G. Oliveira   +3 more
doaj   +1 more source

Discovery and Fine‐Scale Mapping of Hadal Xenophyophore Habitat in the Nova Canton Trough, Central Pacific Ocean

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Discovery and fine‐scale mapping of a hadal xenophyophore field: submersible video transects and photogrammetry enable semi‐automated delineation of xenophyophores, revealing their abundance, spatial organisation, structural complexity and contribution to habitat heterogeneity at ~8000 m depth.
Denise J. B. Swanborn   +5 more
wiley   +1 more source

DeepZoo: A cost‐effective and modular sampler for ecological studies in the deep ocean

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Understanding the structure and dynamics of deep‐ocean communities requires effective sampling of pelagic organisms in near‐bottom waters. These dispersive organisms contribute to biodiversity, connectivity and ecosystem recovery. Yet, current sampling methods remain constrained by size, cost, and depth, leaving key questions unanswered in ...
Johanna N. J. Weston   +7 more
wiley   +1 more source

Systematic Review of Parasite Diversity in Wild Freshwater Fishes and Their Host‐Locality Interactions in Türkiye

open access: yesZoologica Scripta, EarlyView.
ABSTRACT This systematic review documented a taxonomically diverse parasite fauna of freshwater fishes across seven geographical regions of Türkiye, encompassing 11 phyla: Acanthocephala, Annelida, Arthropoda, Choanozoa, Ciliophora, Cnidaria, Euglenozoa, Mollusca, Myzozoa, Nematoda, and Platyhelminthes.
Canan Hamurkaroğlu   +3 more
wiley   +1 more source

Comparative Transcriptomics of Amphinomida (Annelida) [PDF]

open access: yes, 2020
Annelida is a diverse phylum that includes leeches, earthworms, polychaetes, and several model species like Platynereis dumerilii (clam worm), Helobdella robusta (leech), and Capitella capitata (polychaete worm), that are important in the fields of ...
Bartlett, Arianna P.
core   +1 more source

Assessment of Benthic Ecological Quality Status in the Subtidal Zone of Northern Jeju Island, South Korea, During Summer Based on Macrobenthos

open access: yesAnimals
Background: Jeju Island is a world-renowned tourist destination. However, with the increasing intensity of anthropogenic activities, the coastal marine environment of Jeju Island has been negatively affected.
Jian Liang, Chae-Woo Ma, Kwang-Bae Kim
doaj   +1 more source

New systematic results based on chaetal hard structures in Mesochaetopterus (Polychaeta)

open access: yesScientia Marina, 2006
Two kinds of chaetal hard structures have been analysed within the genus Mesochaetopterus (Chaetopteridae, Polychaeta): the specialised chaetae of the fourth segment of the anterior part of the body (i.e. the A4 segment) and the uncinal plates present on
Michel Bhaud   +2 more
doaj   +1 more source

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