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Identification of echinoderms (Echinodermata) from an anchialine cave in Cozumel Island, Mexico, using DNA barcodes
TLDR
Of 26 echinoderm species identified in the Aerolito de Paraiso anchialine cave, seven appear to be endemic to it, and further research and protection of this particularly fragile ecosystem becomes urgent because construction of tourism developments is planned nearby.
Phylogenomics, life history and morphological evolution of ophiocomid brittlestars.
TLDR
The new phylogeny indicates that larval and developmental transitions occurred rarely in Brittlestars Ophiocomidae and shows that species with abbreviated lecithotrophic larval development occur only within Ophiomastix, although the possible monophyly of these species is obscured by the rapid early radiation within this genus.
New asterinid seastars from northwest Australia, with a revised key to Aquilonastra species (Echinodermata: Asteroidea)
TLDR
The Woodside/Western Australian Museum Kimberley Project 2008–2015 collected four small asterinid seastar specimens from Cassini Island and Long Reef in the Kimberley region of north Western Australia, and they represent two new species of Aquilonastra O’Loughlin.
Contrasting processes drive ophiuroid phylodiversity across shallow and deep seafloors
TLDR
It is found that latitudinal diversity gradients are assembled through contrasting evolutionary processes for shallow (0–200 m) and deep (>200 M) seas, which broadly reflects a tropical diversification-driven process that shows exchange of lineages in both directions.
Global biogeographic structuring of tropical shallow‐water brittle stars
AIM: Biogeographic barriers emerged in the tropical oceans as continental masses moved with plate tectonics, and as the tropics contracted to lower latitudes from the late Eocene. These barriers have
The importance of offshore origination revealed through ophiuroid phylogenomics
TLDR
A phylogenetic approach across an entire class of marine invertebrates suggests that most of the oldest clades have a deep-sea origin, but multiple colonization events indicate that the evolution of this group conforms neither to a simple onshore–offshore hypothesis, nor the opposite pattern.
Patterns of Macrofaunal Biodiversity Across the Clarion-Clipperton Zone: An Area Targeted for Seabed Mining
Macrofauna are an abundant and diverse component of abyssal benthic communities and are likely to be heavily impacted by polymetallic nodule mining in the Clarion-Clipperton Zone (CCZ). In 2012, the
2D tree object representation via the slope chain code
TLDR
In order to prove the method for representing 2D tree objects, some tree descriptors of tree objects are obtained and their measures of accumulated slope and tortuosity are computed.
Dark offshoot: Phylogenomic data sheds light on the evolutionary history of a new species of cave brittle star.
TLDR
This study reassesses the species boundaries of this putative cave species using a phylogenomic dataset, and provides a detailed description of Ophionereis commutabilis n.
New species of the genus Ophiolepis Müller & Troschel, 1840 (Echinodermata: Ophiuroidea: Ophiolepididae)
TLDR
The aim of the present work is to report and describe three new species of the tropical brittle-star genus Ophiolepis, with morphological traits and similarities between them and other species extensively discussed.
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