Discovery of a new scale worm (Annelida: Polynoidae) with presumed deep-sea affinities from an anchialine cave in the Balearic Islands (western Mediterranean) DOI Creative Commons
María Capa, Joan Pons, Damià Jaume

et al.

Zoological Journal of the Linnean Society, Journal Year: 2022, Volume and Issue: 196(1), P. 479 - 502

Published: May 9, 2022

Abstract A remarkable new genus and species of scale worm (Annelida: Polynoidae) was found on the bottom sediments an anchialine cave island Mallorca (Balearic Islands, western Mediterranean). Specimens reach up to 2 cm long, lack eyes body pigmentation except for a few scattered minute speckles show enlarged parapodia sensorial appendages. red brain is visible through translucent tegument. Morphological features resemble those Eulagiscinae, currently comprising eight in three genera. Phylogenetic analyses mitochondrial nuclear DNA sequences are not conclusive position taxon but affinity Eulagiscinae ruled out, particularly when taxa with missing data or non-homologous insertion sites excluded from analyses. Pollentia perezi gen. & sp. nov. characterized by unique set morphological features: 13 pairs dorsal elytra; single type notochaetae (stout, spinous rows pointed tip); two types neurochaetae (superior flattened, tridentate tip; inferior shorter thinner, lanceolate pectinate). Some characteristics, such as long parapodial appendages swimming habits, shared other worms. However, closely related known cave-dwelling polynoids.

Language: Английский

Are well-studied marine biodiversity hotspots still blackspots for animal barcoding? DOI Creative Commons
Francesco Mugnai, Emese Meglécz, Marco Abbiati

et al.

Global Ecology and Conservation, Journal Year: 2021, Volume and Issue: 32, P. e01909 - e01909

Published: Nov. 10, 2021

Marine biodiversity underpins ecosystem health and societal well-being. Preservation of hotspots is a global challenge. Molecular tools, like DNA barcoding metabarcoding, hold great potential for monitoring, possibly outperforming more traditional taxonomic methods. However, metabarcoding-based assessments are limited by the availability sequences in reference databases; lack thereof results high percentages unassigned sequences. In this study, we (i) present current status known vs. barcoded marine animal species at scale based on online genetic databases (NCBI BOLD) (ii) compare with data from ten years ago. Then, focused our attention occurrence five Large Ecosystems (LMEs) representing most well studied hotspots, to identify disparities COI coverage between geographic regions phylum level. Barcoding varied among LMEs (from 36.8% 62.4% COI-barcoded species) phyla 4.8% 74.7% species), Porifera, Bryozoa Platyhelminthes being highly underrepresented, compared Chordata, Arthropoda Mollusca. We demonstrate that increased 9.5% 14.2% since last assessment 2011, due new barcodes both already described newly ones (about 15,000 were 2011 2021). The next will thus be crucial enroll concrete collaborative measures long term initiatives (e.g., Horizon 2030, Ocean Decade) boost libraries realm.

Language: Английский

Citations

36
Annelid Diversity: Historical Overview and Future Perspectives DOI Creative Commons
María Capa, Pat Hutchings

Diversity, Journal Year: 2021, Volume and Issue: 13(3), P. 129 - 129

Published: March 17, 2021

Annelida is a ubiquitous, common and diverse group of organisms, found in terrestrial, fresh waters marine environments. Despite the large efforts put into resolving evolutionary relationships these other Lophotrochozoa, delineation basal nodes within group, are still unanswered. holds an enormous diversity forms biological strategies alongside number species, following Arthropoda, Mollusca, Vertebrata perhaps Platyhelminthes, among species most rich phyla Metazoa. The currently accepted annelid changes rapidly when taxonomic groups revised due to synonymies descriptions new species. also experiencing recent increase numbers as consequence use molecular taxonomy methods, which allows entities complexes. This review aims at succinctly reviewing state-of-the-art summarizing main systematic revisions carried out group. Moreover, it should be considered introduction papers that form this Special Issue on Systematics Biodiversity Annelids.

Language: Английский

Citations

29
Exploring the swimming performance and the physical mechanisms of Tomopteris locomotion DOI
Nicholas Battista

Bioinspiration & Biomimetics, Journal Year: 2025, Volume and Issue: 20(2), P. 026011 - 026011

Published: Jan. 22, 2025

Tomopterids are mesmerizing holopelagic swimmers. They use two modes of locomotion simultaneously: drag-based metachronal paddling and bodily undulation.Tomopterishas rows flexible, leg-like parapodia positioned on opposite sides its body. Each row metachronally paddles out phase to the other. Both behaviors occur in concert with a lateral undulation. However, when looked at independently, each mode appears tension The direction undulatory wave is what one may expect for forward (FWD) swimming actively work act against initiated by paddling. To investigate how these synergize generate effective swimming, we created self-propelled, fluid-structure interaction model an idealizedTomopteris. We holistically explored performance over 3D mechanospace comprising length, amplitude, amplitude using machine learning framework based polynomial chaos expansions. Although minimally affected FWD speeds, it helped mitigate larger costs transport that arise from either more mechanically expensive (larger) amplitudes and/or having longer parapodia.

Language: Английский

Citations

0
Scale worm diversity in abyssal and hadal environments (Aphroditiformia, Annelida) DOI Creative Commons
Brett C. Gonzalez, Alejandro Martínez, Alan J. Jamieson

et al.

Deep Sea Research Part I Oceanographic Research Papers, Journal Year: 2025, Volume and Issue: unknown, P. 104490 - 104490

Published: March 1, 2025

Language: Английский

Citations

0
First record of Goniadella gracilis (Verrill, 1873) (Glyceriformia, Goniadidae) in the Italian waters DOI
Fabio Bertasi,

Laura Grossi,

Emanuele Mancini

et al.

Journal of the Marine Biological Association of the United Kingdom, Journal Year: 2025, Volume and Issue: 105

Published: Jan. 1, 2025

Abstract The goniadid polychaete Goniadella gracilis (Verrill, 1873), currently considered as a non-indigenous species in European waters, is reported for the first time Italian waters of Tyrrhenian and Ionian Seas. A detailed description individuals this from Mediterranean Sea provided, including pigmentation pattern specimens, which to our knowledge has never been before literature. In addition, new molecular data, 18S COI sequences, specimens are presented compared with data North-Eastern Atlantic. On basis available evidence, status G. basin discussed, here proposed be questionable area.

Language: Английский

Citations

0
Two new records and description of a new Perinereis (Annelida, Nereididae) species for the Saudi Arabian Red Sea region DOI Creative Commons
Marcos A. L. Teixeira, Chloé Julie Loïs Fourreau, Juan Sempere‐Valverde

et al.

ZooKeys, Journal Year: 2024, Volume and Issue: 1196, P. 331 - 354

Published: April 1, 2024

Annelid biodiversity studies in the Red Sea are limited and integrative taxonomy is needed to accurately improve reference libraries region. As part of bioblitz effort Saudi Arabia assess invertebrate northern Gulf Aqaba, Perinereis specimens from intertidal marine lagoon-like rocky environments were selected for an independent assessment, given known taxonomic ambiguities this genus. This study used approach, combining molecular with morphological geographic data. Our results demonstrate that found mainly Aqaba not only morphologically different other five similar Group I species reported region, but phylogenetic analysis using available COI sequences GenBank revealed operational units, suggesting undescribed species, P. kaustiana sp. nov. The new genetically close shares a paragnath pattern Indo-Pacific distributed helleri , particular Area III Areas VII–VIII. Therefore, we suggest it may belong same complex. However, differs latter shorter length postero-dorsal tentacular cirri, median parapodia much longer dorsal Tentacular posteriormost wider greatly expanded ligules. Additionally, two records Neom area belonging damietta suezensis previously described Egyptian coast (Suez Canal) sympatrically apparently sympatric each other.

Language: Английский

Citations

3
Phylogenomics resolves ambiguous relationships within Aciculata (Errantia, Annelida) DOI Creative Commons
Tilic Ekin, Josefin Stiller, Ernesto Campos

et al.

Molecular Phylogenetics and Evolution, Journal Year: 2021, Volume and Issue: 166, P. 107339 - 107339

Published: Oct. 29, 2021

Aciculata (Eunicida + Phyllodocida) is among the largest clades of annelids, comprising almost half known diversity all marine annelids. Despite group's large size and biological importance, most phylogenomic studies on Annelida to date have had a limited sampling this clade. The phylogenetic placement many within Phyllodocida in particular has remained poorly understood. To resolve relationships we conducted large-scale analysis based 24 transcriptomes (13 new), chosen represent family-ranked taxa that never been included broad study. Our also includes several enigmatic with challenging placement, such as Histriobdella, Struwela, Lacydonia, Pilargis holopelagic worms Lopadorrhynchus, Travisiopsis Tomopteris. robust phylogeny allows us name place some these problematic significant implications systematics group. Within Eunicida reinstate names Eunicoidea Oenonoidea. delineate Phyllodociformia, Glyceriformia, Nereidiformia, Nephtyiformia Aphroditiformia. Phyllodociformia now includes: Typhloscolecidae, Lopadorrhynchidae Phyllodocidae. Nephtyidae Pilargidae. We broaden delineation Glyceriformia include Sphaerodoridae, Tomopteridae Glyceroidea (Glyceridae Goniadidae). Furthermore, our study demonstrates explores how conflicting, yet highly supported topologies can result from confounding signals gene trees.

Language: Английский

Citations

20
Revealing the diversity of the green Eulalia (Annelida, Phyllodocidae) species complex along the European coast, with description of three new species DOI
Marcos A. L. Teixeira, Pedro E. Vieira,

D. W. Fenwick

et al.

Organisms Diversity & Evolution, Journal Year: 2023, Volume and Issue: 23(3), P. 477 - 503

Published: Jan. 13, 2023

Language: Английский

Citations

7
New fossil of Gaoloufangchaeta advances the origin of Errantia (Annelida) to the early Cambrian DOI Creative Commons
X. C. Yang, M. Teresa Aguado, Conrad Helm

et al.

Royal Society Open Science, Journal Year: 2024, Volume and Issue: 11(4)

Published: April 1, 2024

Molecular clock estimates suggest the origin of Annelida dates back to Ediacaran period, which is in discordance with first appearance this taxon early Cambrian, as evidenced by fossil records stem-group and basally branching crown-group annelids. Using new material from Cambrian Guanshan biota (Cambrian Series 2, Stage 4), we re-interpret Gaoloufangchaeta bifurcus Zhao, Li & Selden, 2023, earliest known errantian annelid. has a prominent anterior end bearing three pairs putatively sensory appendages pair eyes; muscular eversible pharynx papillae identified. The presence enlarged parapodia acicula-like structures long capillary chaetae suggests pelagic lifestyle for taxon. Our phylogenetic analyses recover within Phyllodocida (Pleistoannelida, Errantia), extending Errantia Cambrian. data are line hypothesis that diverged before indicate both morphological ecological diversification annelids

Language: Английский

Citations

2
Ecological review of the Syllidae (Annelida) associated with sponges (Porifera), including the description of a new species from northeastern Brazil DOI Creative Commons
Anny Laura de Oliveira Lira, Nykon Craveiro, Karla Paresque

et al.

Ocean and Coastal Research, Journal Year: 2024, Volume and Issue: 72(suppl 1)

Published: Jan. 1, 2024

This study reviews the data published on ecology of polychaete annelids family Syllidae associated with sponges (Porifera) and provides additional empirical from samples collected at Paiva Beach (northeastern Brazil). literature review Web Science Scopus databases, together sources information, to provide best possible overview available ecological relationships between these organisms. identified a total 76 papers reporting 68 associations syllids sponges, which involved 61 syllid species inhabiting 57 different sponge taxa. Although few studies have provided detailed auto-ecology some information is their reproductive patterns, feeding habits, role in association. In this study, seven genera were recorded genus Cinachyrella (Porifera: Tetillidae) Pernambuco, northeastern Brazil, where predominance Branchiosyllis was recorded. The found either outer surface or inner channels, most specimens females, presented stolons, indicating that they using as substrate. A new described based our data. lanai sp. nov. can be by its relatively enlarged anterior region, cirriphore collar, branchiae varying domed multilobed. compared morphologically similar congeners. synoptic table morphological variation among individuals type series also provided, well an updated key identification Brazilian coast.

Language: Английский

Citations

2