Results 1 to 10 of about 8,396 (248)

Evolution of Maternal Provisioning and Development in the Ophiuroidea: Egg Size, Larval Form, and Parental Care. [PDF]

open access: yesIntegr Comp Biol
Synopsis The Ophiuroidea is the most speciose class of echinoderms and has the greatest diversity of larval forms, but we know less about the evolution of development (evo-devo) in this group than for the other echinoderm classes.
Byrne M   +4 more
europepmc   +2 more sources

A Sister-Group Comparison of Branching and Pedicellariae in Brittlestars (Echinodermata: Ophiuroidea). [PDF]

open access: yesIntegr Org Biol, 2023
Synopsis Branching of arms and presence of pedicellariae are characters among ophiuroids found only in the order Euryalida (snakestars and basketstars). Family Asteronychidae has neither character; family Euryalidae has 2 small clades with branched arms;
Turner RL, O'Neill BO.
europepmc   +2 more sources

Having cake and eating too: The benefits of an intermediate larval form in a brittle star Amphiodia sp. opaque (Ophiuroidea). [PDF]

open access: yesEcol Evol, 2023
Most marine invertebrate larvae either obligately feed or depend on maternally provided reserves during planktonic development. A small number of species have the capacity to do both, in a mode of development known as facultative planktotrophy.
Nakata NN, Emlet RB.
europepmc   +2 more sources

Exceptional population genomic homogeneity in the black brittle star Ophiocomina nigra (Ophiuroidea, Echinodermata) along the Atlantic-Mediterranean coast. [PDF]

open access: yesSci Rep, 2023
The Atlantic-Mediterranean marine transition is characterised by strong oceanographic barriers and steep environmental gradients that generally result in connectivity breaks between populations from both basins and may lead to local adaptation.
Leiva C   +5 more
europepmc   +2 more sources

Phylogenetic relationships and lineage-specific mitochondrial gene rearrangement in Ophiuroidea: insights from mitochondrial genomes

open access: yesFrontiers in Marine Science
Ophiuroids, the most diverse group of echinoderms, inhabit a vast array of ecological niches and play vital roles in benthic ecosystems as suspension feeders, scavengers and opportunists.
Jieying Na   +13 more
doaj   +2 more sources

New species, redescriptions and new records of deep-sea brittle stars (Echinodermata: Ophiuroidea) from the South China Sea, an integrated morphological and molecular approach

open access: yesEuropean Journal of Taxonomy, 2022
Deep-sea ophiuroids were collected by the manned submersible ‘Shenhaiyongshi’ from the South China Sea at depths of 500–3550 m, in 2017 to 2020. A total of 18 species were identified, including three new species and eight new records, increasing the ...
Hasitha Nethupul   +2 more
doaj   +2 more sources

The complete mitochondrial genome of Asteroschema tubiferum (Ophiuroidea: Euryalida: Asteroschematidae) [PDF]

open access: yesMitochondrial DNA. Part B. Resources, 2022
We describe the first mitochondrial genome of a brittle star Asteroschema tubiferum Matsumoto 1911 in family Asteroschematidae. The mitogenome was sequenced and assembled using next-generation sequencing technology, and were 16,361 bp in size with 37 ...
Zhaoshan Zhong   +3 more
doaj   +2 more sources

Morphological diagnoses of higher taxa in Ophiuroidea (Echinodermata) in support of a new classification

open access: yesEuropean Journal of Taxonomy, 2018
A new classification of Ophiuroidea, considering family rank and above, is presented. The new family and superfamily taxa in O’Hara et al. (2017) were proposed to ensure a better readability of the new phylogeny but are unavailable under the provisions ...
Timothy D. O'Hara   +4 more
doaj   +2 more sources

First Jurassic brittlestar from Neuquén Basin, Argentina [PDF]

open access: yesActa Palaeontologica Polonica, 2023
Articulated fossil ophiuroids from South America were reported for the Devonian, Cretaceous, Eocene, and Miocene. Here we report the first Jurassic record of an articulated ophiuroid from the Sierra Chacaicó Formation (early Pliensbachian– Sinemurian ...
DÉBORA M. CAMPETELLA   +6 more
doaj   +1 more source

An annotated catalogue of Echinodermata types in the Museu de Zoologia, Universidade de São Paulo, Brazil [PDF]

open access: yesPapéis Avulsos de Zoologia, 2022
The types of nominal species of Echinodermata in the collection of the Museu de Zoologia, Universidade de São Paulo are catalogued: Holothuroidea (19 species - 16 holotypes, 1 paratype and 2 neotypes) and Ophiuroidea (4 species - 1 neotype and 3 ...
Luciana Martins   +3 more
doaj   +1 more source

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