A new species of Ophiuroidea, sp. nov., is described. It was collected from Munseom Island, Jeju-do, South Korea at a depth of 28-36 m, by SCUBA diving. has unique and distinct morphological characteristics: small disk, densely covered by small trifid spines, radial shields completely concealed by disk spines, six arms with four arm spines proximally, fissiparous. In addition, this species is clearly distinguished from other species of by mitochondrial . This species is usually hexamerous and reproduces asexually by fissiparity. It is the first report of fissiparous reproduction in the genus .
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http://dx.doi.org/10.6620/ZS.2019.58-08 | DOI Listing |
Proc Biol Sci
May 2024
Palaeontology Department, State Museum of Natural History Stuttgart, Rosenstein 1 Stuttgart 70191, Germany.
Asexual reproduction by means of splitting, also called fissiparity, is a common feature in some asterozoan groups, especially in ophiactid brittle stars. Most fissiparous brittle stars show six instead of the usual five rays, live as epibionts on host organisms, and use clonal fragmentation to rapidly colonize secluded habitats and effectively expand the margins of their distribution area. While the biology and ecology of clonal fragmentation are comparatively well understood, virtually nothing is known about the evolution and geological history of that phenomenon.
View Article and Find Full Text PDFZootaxa
December 2019
Young Researchers and Elite Club, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran.
Published records on the Ophiuroidea fauna of the Persian Gulf and Gulf of Oman are scattered in difficult to access journals and books. This study presents a compilation of all published records, complemented with data from new samples. Distribution, habitat and depth in the study area, as well as known Indian Ocean distributions, are included.
View Article and Find Full Text PDFZool Stud
May 2019
Department of Chemistry Life Science, Sahmyook University, Seoul, Korea.
A new species of Ophiuroidea, sp. nov., is described.
View Article and Find Full Text PDFZootaxa
December 2018
Khorramshahr University of Marine Science and Technology, Khorramshahr-Abadan Blvd, Khorramshahr, 64199 Khuzestan, Iran..
During a faunistic survey on two shipwrecks in the northern Persian Gulf, several species of ophiuroid were collected in 2015 and 2016. Ophiactis modesta is reported for the first time in the Persian Gulf and Ophiothela venusta is re-described, because it has likely been misidentified in the past, possibly confused with Ophiopsammium semperi. Both species were epizoic: Ophiothela venusta was found on octocorals, Ophiactis modesta on sponges.
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