Results 31 to 40 of about 1,885 (176)

Ophiuroidea Gray 1840

open access: yes, 2023
Key to the identification of the genera and species of deep-sea Ophiuroidea collected during the TALUDcruises in western Mexico 1 Dorsal disc with naked skin and external ossicles. DAP and VAP absent......................................... 2 1’ Dorsal disc without naked skin and external ossicles.
Granja-Fernández, Rebeca   +3 more
openaire   +2 more sources

Ophionereis reticulata (Echinodermata, Ophiuroidea) [PDF]

open access: yesIheringia. Série Zoologia, 2010
This study compared the arm regeneration frequencies in two different populations of Ophionereis reticulata (Say, 1825) in São Sebastião, Southeast Brazil and observed arm regeneration between age classes (juvenile and adults) and sexes (male and female). From the 1,170 individuals sampled, 1,089 (92.2%) showed signs of arm regeneration.
Yokoyama, Leonardo Q.   +1 more
openaire   +3 more sources

Equinodermes do Brasil: IV. Sobre seis espécies novas de Ophiuroidea da região ao largo da Ilha Grande (RJ)

open access: yesBrazilian Journal of Oceanography, 1974
Este trabalho apresenta a descrição, distribuição, dados ecológicos, chaves para classificação e fotografias de seis espécies novas de Ophiuroidea pertencentes às famílias Ophiolepididae, Amphiuridae, Ophiacanthidae , Ophiomyxidae e Amphilepididae ...
Luiz Roberto Tommasi, Jorge de Abreu
doaj   +1 more source

Mitochondrial genomes resolve phylogenetic conflicts and lineage-specific adaptive dynamics in Ophiuroidea: insights from deep-sea lineages [PDF]

open access: yesZoosystematics and Evolution
Ophiuroidea, the most diverse class of echinoderms, occupy habitats ranging from coastal zones to deep sea, offering unique insights into evolutionary adaptation and biogeography. Despite their ecological prominence, the phylogenetic relationships within
Weihao Xu   +7 more
doaj   +3 more sources

Annotated checklist of Echinoderms from Maranhão and Piauí States, Northeastern Brazil [PDF]

open access: yesCheck List, 2013
The present study provides the first checklist of echinoderm species that occurs in the States of Maranhão and Piauí, in Northeastern Brazil. The present compilation was produced based on an extensive bibliographical revision and on echinoderms deposited
Anne Gondim   +2 more
doaj   +3 more sources

Automated Quantification of Brittle Stars in Seabed Imagery Using Computer Vision Techniques

open access: yesSensors, 2021
Underwater video surveys play a significant role in marine benthic research. Usually, surveys are filmed in transects, which are stitched into 2D mosaic maps for further analysis.
Kazimieras Buškus   +5 more
doaj   +1 more source

A New Morphological Phylogeny of the Ophiuroidea (Echinodermata) Accords with Molecular Evidence and Renders Microfossils Accessible for Cladistics. [PDF]

open access: yesPLoS ONE, 2016
Ophiuroid systematics is currently in a state of upheaval, with recent molecular estimates fundamentally clashing with traditional, morphology-based classifications.
Ben Thuy, Sabine Stöhr
doaj   +1 more source

Echinoidea and Ophiuroidea

open access: yesDiscovery reports., 1936
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Echinodermata Ophiuroidea

open access: yes, 1922
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +3 more sources

GSL-Asteroidea-Ophiuroidea

open access: yes, 2022
A mini-poster of the principal sea stars and brittle stars that may be expected on biodiversity surveys in Gulf of St. Lawrence (GSL). Updated from a page of a series here: Nozères (2022) Mini-posters of macroinvertebrates in captures from bottom trawl surveys of the estuary and northern Gulf of St. Lawrence--update 2022-10-30.
openaire   +1 more source

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