1,721,113 research outputs found
A revision of the genus Cheliplana de Beauchamp, 1927 (Rhabdocoela: Schizorhynchia), with the description of six new species
No full textGobert, Stefan, Diez, Yander L., Monnens, Marlies, Reygel, Patrick, Van Steenkiste, Niels W. L., Leander, Brian S., Artois, Tom (2021): A revision of the genus Cheliplana de Beauchamp, 1927 (Rhabdocoela: Schizorhynchia), with the description of six new species. Zootaxa 4970 (3): 453-494, DOI: https://doi.org/10.11646/zootaxa.4970.3.
Molecular evolution of rhabdocoel flatworms as a case study on the acquisition of endosymbiosis
No full textnot availabl
FIGURE 15 in Taxonomy and phylogeny of Koinocystididae (Platyhelminthes, Kalyptorhynchia) with the description of three new genera and twelve new species
No full textFIGURE 15. Reinhardorhynchus tahitiensis sp. n.. A, general organisation (from a live animal). B–C, sclerotised structures of the copulatory bulb (from the holotype). D, sagittal reconstruction of the genital system from the left hand side. C with proximal end toward top of figure, B with proximal end toward left of figure.Published as part of Diez, Yander L., Monnens, Marlies, Aguirre, Rosa Isabel, Yurduseven, Rana, Jouk, Philippe, Van Steenkiste, Niels W. L., Leander, Brian S., Schockaert, Ernest, Reygel, Patrick, Smeets, Karen & Artois, Tom, 2021, Taxonomy and phylogeny of Koinocystididae (Platyhelminthes, Kalyptorhynchia) with the description of three new genera and twelve new species, pp. 451-500 in Zootaxa 4948 (4) on page 481, DOI: 10.11646/zootaxa.4948.4.1, http://zenodo.org/record/462923
Fig. 4 in New species of Polycystididae (Platyhelminthes: Kalyptorhynchia) from Cuba and the Pacific coast of Panama
No full textFig. 4. Species of Typhlopolycystidinae Evdonin, 1977. Sabulirhynchus ibarrae sp. nov. A–B. Live animal. C. Holotype (FMNH), prostatic stylet type III. D–E. Details of the genital systems.Published as part of Diez, Yander L., Sanjuan, Claudia, Monnens, Marlies & Artois, Tom, 2023, New species of Polycystididae (Platyhelminthes: Kalyptorhynchia) from Cuba and the Pacific coast of Panama, pp. 67-86 in European Journal of Taxonomy 856 on page 79, DOI: 10.5852/ejt.2023.856.2029, http://zenodo.org/record/755456
Habitat and Feeding Behaviour Influence Microbiome Composition in Rhabdocoela ('Turbellaria')
No full text1. Microbiome studies in Platyhelminthes have predominantly focused on a limited number of taxa, overlooking the vast diversity of turbellarian hosts. Here, we aimed to expand our understanding of microbial associations in a selection of free-living representatives of Rhabdocoela, a group of turbellarian flatworms that is very species rich and ecologically diverse. 2. Using 16S rRNA sequencing, we characterised the microbiomes of three species of Rhabdocoela, representing the two most speciose lineages within this taxon: Dalytyphloplanida and Kalyptorhynchia. The specimens were captured in the wild and obtained from marine or freshwater habitats. 3. The microbiomes of Gyratrix hermaphroditus (Kalyptorhynchia) and Mesostoma ehrenbergii (Dalytyphloplanida) were both dominated by Proteobacteria, while Phaenocora evelinae (Dalytyphloplanida) was predominantly associated with Cyanobacteria, more specifically Oxyphytobacteria (chloroplasts). 4. Based on the observed genera, our analysis revealed distinct microbial patterns, possibly associated with the habitat and lifestyle of the studied species. We could not exclude the presence of a phylosymbiotic signal as a limited core microbiome was present for each rhabdocoel species, although no set of bacteria common to all three rhabdocoel species was found. 5. This explorative study contributes to the expanding knowledge of invertebrate microbiomes, providing new insights into the microbial associations of a selection of turbellarians. The descriptive results presented here open up several promising avenues for future research, including the search for functional roles of turbellarian bacterial symbionts and exploring potential correlations between microbiome compositions, turbellarian phylogeny and environmental variables.This work was supported by the Research Foundation Flanders (FWO) (G.0B83.17N, N1522719 and 1522015N), the Bijzonder OnderzoeksFonds of Hasselt University (BOF16NI03) and the Hasselt University Methusalem project (08M03VGRJ). The research leading to results presented in this publication was carried out with infrastructure funded by The European Marine Biological Resource Centre (EMBRC) Belgium—FWO project GOH3817N.
Acknowledgements
The authors thank Natascha Steffanie and Ria Vanderspikken for their skilful technical assistance. We also thank Breanne McAmmond and Jonathan Van Hamme for performing the Ion Torrent sequencing run. Bioinformatics analyses were made possible thanks to the Flemish Supercomputer Centre (VSC) infrastructure, supported by the FWO. Bart Tessens and Albrecht Houben are thanked for their collecting efforts, which yielded the rhabdocoel specimens included in this work. Sampling in France was facilitated by the staff members of the marine station in Roscoff. The Brazilian expedition was supported by Ana Maria Leal-Zanchet and João Braccini
Fig. 11. Protoplanella simplex Reisinger, 1924. A in Limnoterrestrial 'Typhloplanidae' (Rhabdocoela, Platyhelminthes), with the description of four new species and a new genus
No full textFig. 11. Protoplanella simplex Reisinger, 1924. A. Internal organisation of a live specimen. B. Organisation of the genital system of a live specimen. C. Reconstruction of reproductive organs based on sagittal sections of the neotype (neotype no. 825).Published as part of Houben, Albrecht M., Monnens, Marlies, Proesmans, Willem & Artois, Tom J., 2022, Limnoterrestrial 'Typhloplanidae' (Rhabdocoela, Platyhelminthes), with the description of four new species and a new genus, pp. 70-102 in European Journal of Taxonomy 798 on page 100, DOI: 10.5852/ejt.2022.798.1671, http://zenodo.org/record/632304
Habitat and feeding behaviour influence microbiome composition in Rhabdocoela ('Turbellaria')
No full textMicrobiome studies in Platyhelminthes have predominantly focused on a limited number of taxa, overlooking the vast diversity of turbellarian hosts. Here, we aimed to expand our understanding of microbial associations in a selection of free-living representatives of Rhabdocoela, a group of turbellarian flatworms that is very species-rich and ecologically diverse. Using 16S rRNA sequencing, we characterised the microbiomes of three species of Rhabdocoela, representing the two major lineages within this taxon: Dalytphloplanida and Kalyptorhynchia. The specimens were captured in the wild and obtained from marine or freshwater habitats. Gyratrix hermaphroditus (Kalyptorhynchia) and Mesostoma ehrenbergii (Dalytphloplanida) were both dominated by Proteobacteria, while Phaenocora evelinae (Dalytphloplanida) was predominantly associated with Cyanobacteria, more specific Oxyphytobacteria (chloroplasts). Based on the observed genera, our analysis revealed distinct microbial patterns, possibly associated with the habitat and lifestyle of the studied species. We could not exclude the presence of a phylosymbiotic signal as a limited core microbiome was present for each rhabdocoel species, although no set of bacteria common in all three rhabdocoel species was found. This explorative study contributes to the expanding knowledge of invertebrate microbiomes, providing new insights into the microbial associations of a selection of turbellarians. The descriptive results presented here open up several promising avenues for future research, including the search for functional roles of turbellarian bacterial symbionts and exploring potential correlations between microbiome compositions, turbellarian phylogeny and environmental parameters
Fig. 2 in New species of Polycystididae (Platyhelminthes: Kalyptorhynchia) from Cuba and the Pacific coast of Panama
No full textFig. 2. New species of Phonorhynchoidinae Tessens, Janssen & Artois, 2014. A, E. Brachyrhynchoides ortizi sp. nov. B–C, F. Djeziraia adriani sp. nov. D, G. Phonorhynchoides lalanai sp. nov. A–D. From live animals. E–G. Details of the genital systems of the holotypes (FMNH).Published as part of Diez, Yander L., Sanjuan, Claudia, Monnens, Marlies & Artois, Tom, 2023, New species of Polycystididae (Platyhelminthes: Kalyptorhynchia) from Cuba and the Pacific coast of Panama, pp. 67-86 in European Journal of Taxonomy 856 on page 74, DOI: 10.5852/ejt.2023.856.2029, http://zenodo.org/record/755456
Fig. 9. Olisthanellinella rotundula Reisinger, 1924. A in Limnoterrestrial 'Typhloplanidae' (Rhabdocoela, Platyhelminthes), with the description of four new species and a new genus
No full textFig. 9. Olisthanellinella rotundula Reisinger, 1924. A. Internal organisation of a live specimen. B. Organisation of the genital system of a live specimen. C. Reconstruction of female reproductive organs based on horizontal sections. D. Reconstruction of male reproductive organs based on sagittal sections.Published as part of Houben, Albrecht M., Monnens, Marlies, Proesmans, Willem & Artois, Tom J., 2022, Limnoterrestrial 'Typhloplanidae' (Rhabdocoela, Platyhelminthes), with the description of four new species and a new genus, pp. 70-102 in European Journal of Taxonomy 798 on page 95, DOI: 10.5852/ejt.2022.798.1671, http://zenodo.org/record/632304
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