Topic
Pearsonothuria
About: Pearsonothuria is a research topic. Over the lifetime, 17 publications have been published within this topic receiving 279 citations.
Papers
TL;DR: The first phylogeny of the Holothuriidae is presented, using 8 species from the 5 currently recognized genera and based on approximately 540 nucleotides from a polymerase chain reaction–amplified and conserved 3′ section of 16S mitochondrial ribosomal DNA.
Abstract: Members of the Holothuriidae, found globally at low to middle latitudes, are often a dominant component of Indo–West Pacific coral reefs. We present the first phylogeny of the group, using 8 species from the 5 currently recognized genera and based on approximately 540 nucleotides from a polymerase chain reaction–amplified and conserved 3′ section of 16S mitochondrial ribosomal DNA. Parsimony and likelihood analyses returned identical topologies, permitting several robust inferences to be drawn. Several points corroborated the Linnean classification. Actinopyga and Bohadschia each appear monophyletic and Pearsonothuria is sister to Bohadschia. Other aspects of our phylogeny, however, were not in accord with the taxonomy of Holothuriidae or previous speculations about the group’s evolutionary history. Most notably, the genus Holothuria appears paraphyletic. Actinopyga and Bohadschia, sometimes held to be closely related to one another because of certain morphologic similarities, are only distantly related. The morphologically distinct Labidodemas, even thought to warrant separation at the family level, is nested well within Holothuria. A maximum parsimony reconstruction of ancestral ossicle form on the phylogeny indicated that, in addition to a probable bout of elaboration in ossicle form (the modification of rods or rosettes to holothuriid-type buttons), at least 2 rounds of ossicle simplification also transpired in which buttons reverted to rods or rosettes. Cuvierian tubules, defensive organs unique to numerous members of Holothuriidae, were probably present before the initial radiation of the family, but the reconstruction is ambiguous as to their ancestral function.
60 citations
TL;DR: The Holothuriidae is one of the three established families within the large holothuroid order Aspidochirotida as mentioned in this paper, and approximately 185 recognized species of this family are commonly classified in five nominal genera: Actinopyga, Bohadschia, Holothuria, Pearsonothuria and Labidodemas.
30 citations
TL;DR: The results showed that B. marmorata is substantially different from all the other species and occupies alone one taxon, and it can be suggested to reclassify the family Holothuriidae into three subfamilies.
Abstract: Actinopyga mauritiana, Bohadschia marmorata, Holothuria leucospilota, H. edulis, H. atra and H. polii are the abundant sea-cucumbers inhabiting either Red or Mediterranean Sea shore in Egypt. The aim of this study was to elucidate the metabolic content in the tegument of the selected sea-cucumbers using ultra-performance liquid chromatography coupled to high-resolution mass spectrometry (UPLC/HRMS). The identified metabolites included sulfated saponins such as holothurin B1 and 24-dehydroechinoside A and non-sulfated saponins such as bivittoside C and D. Our results showed that B. marmorata is substantially different from all the other species and occupies alone one taxon. Consequently, it can be suggested to reclassify the family Holothuriidae into three subfamilies. The first suggested comprising the genera, Holothuria and Actinopyga, the second includes only genus Bohadschia, whereas the third includes only genus Pearsonothuria. Lipidomic analysis of sea-cucumbers showed high variation in saturated and unsaturated fatty acids (USFAs) between the collected species. H. edulis and B. marmorata showed the highest amount of all identified SFAs. Among the USFAs, palmitoleic, docosatrienoic and linoleic acid were detected in varied amount in most species.
21 citations
TL;DR: In this article, two triterpene glycosides from sea cucumber Pearsonothuria graeffei extract were successfully purified by one-step high-speed countercurrent chromatography (HSCCC) using a two-phase solvent systems comprising ethyl acetate-n-butanol-methanol-water 2.4:2.6:0.8 (v/v) to yield holothurin A and echinoside A with purities 93.5 and 95.5%, respectively.
Abstract: Summary Holostane series glycosides have been isolated by a new and effective method. Two main triterpene glycosides from sea cucumber Pearsonothuria graeffei extract were successfully purified by one-step high-speed countercurrent chromatography (HSCCC) using a two-phase solvent systems comprising ethyl acetate-n-butanol-methanol-water 2.4:2.6:0.2:4.8 (v/v) to yield holothurin A and echinoside A with purities 93.5 and 95.5%, respectively. The chemical structures were elucidated by ESIMS and NMR analysis.
21 citations
TL;DR: The identification of Indonesian beche-de-mers using molecular method could support the identification of the local sea cucumbers to overcome mislabeled and fraud and correct identification is important for the record of beche de mer trade in Indonesia and further conservation management.
Abstract: . Patantis G, Dewi AS, Fawzya YN, Nursid M. 2019. Identification of Beche-de-mers from Indonesia by molecular approach. Biodiversitas 20: 537-543. Sea cucumbers have been commercially traded around the world due to their nutritional values and health benefits. Sea cucumbers are marketed as processed sea cucumber, also known as beche de mer, teripang, haisen or gamat. Due to the high global demand of beche-de-mers, there have been several cases of fraud due to the visual shape and color similarities of processed sea cucumbers. Additionally, the local name diversity of Indonesian sea cucumbers making the identification of beche-de-mers difficult. Therefore, this study aimed to identify commercial sea cucumbers from selected locations in Indonesia by molecular approach. The targeted Cytochrome c oxidase subunit I (COI) was used in this research. A total of 25 beche-de-mers was purchased from local markets in Indonesia, i.e. Boalemo (17 local names), Pesawaran (5), Surabaya (2) and West Lombok (1). Results showed that 22 species of beche-de-mer were successfully identified, ie. Acaudina sp., Actinopyga echinites, A. lecanora, A. miliaris, Bohadschia argus, B. marmorata, B. ocellata, B. vitiensis, Holothuria sp. H. atra, H. coluber, H. edulis, H. excellens, H. fuscocinerea, H. fuscogilva, H. fuscopunctata, H. scabra, Pearsonothuria graeffei, Phyrella sp., Stichopus herrmanni, S. horrens and S. monotuberculatus. The identification of Indonesian beche-de-mers using molecular method could support the identification of the local sea cucumbers to overcome mislabeled and fraud. Correct identification is important for the record of beche-de-mer trade in Indonesia and further conservation management.
12 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 2 |
| 2020 | 1 |
| 2019 | 1 |
| 2018 | 2 |
| 2017 | 1 |
| 2015 | 2 |