Relevant bibliographies by topics / Freshwater planarians

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  2. Dissertations / Theses
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Academic literature on the topic 'Freshwater planarians'

Author: Grafiati
Published: 7 September 2021
Last updated: 29 July 2025

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Journal articles on the topic "Freshwater planarians"

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Pochron, Sharon T., Samy Sasoun, Siddhartha Maharjan, et al. "Toxicity of a Common Glyphosate Metabolite to the Freshwater Planarian (Girardia tigrina)." Sustainability 16, no. 2 (2024): 842. http://dx.doi.org/10.3390/su16020842.

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To establish meaningful policy directives for sustainable agrochemical use, we require baseline knowledge of the impacts of agrochemicals on non-target organisms. The widespread use of the herbicide glyphosate has resulted in the global presence of its metabolite, aminomethylphosphonic acid (AMPA). AMPA is commonly found in water bodies, including freshwater systems. We investigated the effects of AMPA exposure on the survivorship, regenerative abilities, and locomotion of the brown planarian (Girardia tigrina), a water-dwelling flatworm commonly found in freshwater ecosystems. In a series of
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Yin, Dandan, Zhenbiao Xu, Minmin Feng, Zelong Zhao, Dahu Chen, and Linxia Song. "Genotoxicity Evaluation of Metformin in Freshwater Planarian Dugesia japonica by the Comet Assay and RAPD Analysis." BioMed Research International 2022 (August 17, 2022): 1–7. http://dx.doi.org/10.1155/2022/2822605.

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Objective. To investigate the genotoxicity of metformin on planarian with different concentrations and exposure times. Methods. The planarians were treated, respectively, with 10 mmol/L and 50 mmol/L metformin for 1, 3, and 5 days, and then, the comet assay and random amplified polymorphic DNA (RAPD) analysis were performed. 13 random primers were used for PCR amplification with the genomic DNAs as templates. Planarians cultured in clear water were used as the control. Genomic template stability (GTS) was calculated by comparing and analyzing the RAPD patterns of the control group and the trea
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Xu, R. "Effects of Glutamate and Acetylcholine on Foraging Behaviors of Dugesia sp." Young Scientist 1, no. 1 (2022): 62–70. https://doi.org/10.5281/zenodo.8048498.

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Planarians are one of the most primitive groups of organisms to have developed acentral nervous system, being a useful model for neurological research. This experiment focused on the foraging behavior of Dugesia sp., a freshwater planarian under the treatment of different concentrations of exogenous neurotransmitters glutamate and acetylcholine. The average velocities of planarians showed dose-related decreasing trends when acetylcholine was applied, while an overall increase was observed in all glutamate groups. Thus, the results suggested the role of the two neurotransmitters in regulating p
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Miyamoto, Mai, Miki Hattori, Kazutaka Hosoda, et al. "The pharyngeal nervous system orchestrates feeding behavior in planarians." Science Advances 6, no. 15 (2020): eaaz0882. http://dx.doi.org/10.1126/sciadv.aaz0882.

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Planarians exhibit traits of cephalization but are unique among bilaterians in that they ingest food by means of goal-directed movements of a trunk-positioned pharynx, following protrusion of the pharynx out of the body, raising the question of how planarians control such a complex set of body movements for achieving robust feeding. Here, we use the freshwater planarian Dugesia japonica to show that an isolated pharynx amputated from the planarian body self-directedly executes its entire sequence of feeding functions: food sensing, approach, decisions about ingestion, and intake. Gene-specific
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Goel, Tapan, Danielle Ireland, Vir Shetty, Christina Rabeler, Patrick H. Diamond, and Eva-Maria S. Collins. "Let it rip: the mechanics of self-bisection in asexual planarians determines their population reproductive strategies." Physical Biology 19, no. 1 (2021): 016002. http://dx.doi.org/10.1088/1478-3975/ac2f29.

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Abstract Asexual freshwater planarians reproduce by transverse bisection (binary fission) into two pieces. This process produces a head and a tail, which fully regenerate within 1–2 weeks. How planarians split into two offspring—using only their musculature and substrate traction—is a challenging biomechanics problem. We found that three different species, Dugesia japonica, Girardia tigrina and Schmidtea mediterranea, have evolved three different mechanical solutions to self-bisect. Using time lapse imaging of the fission process, we quantitatively characterize the main steps of division in th
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Xu, Rose. "The effects of serotonin on regeneration of the planarian paucumara falcata." Young Scientist 2, no. 1 (2023): 43–47. https://doi.org/10.5281/zenodo.10002970.

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Planarians, for their efficient regeneration capacity and establishment of a central nervous system, are suitable models for understanding stem cells potency and developmental neuroscience. The ubiquitous neurotransmitter, serotonin, was stated to have a vital role in the regeneration process. This research investigated the regenerative sexual reproduction effect of exogenous serotonin in a recently found marine planarian, Paucumara falcata. Contrary to freshwater species, this marine planarian showed dose-dependent retarded regeneration in presence of serotonin, suggesting possible variation
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Saraiva, Althiéris S., Eloisa Borges dos Reis, Fernanda S. Farnese, et al. "Unveiling the Subtle Threats: The Neurobehavioral Impact of Chlorpyrifos on Girardia tigrina." Toxics 12, no. 7 (2024): 512. http://dx.doi.org/10.3390/toxics12070512.

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Chlorpyrifos, an organophosphate insecticide widely used to control agricultural pests, poses a significant environmental threat due to its toxicity and persistence in soil and water. Our work aimed to evaluate the acute (survival) and chronic (regeneration, locomotion, and reproduction) toxicity of chlorpyrifos to the non-target freshwater planarian Girardia tigrina. The 48 h lethal concentration (LC50) of the commercial formulation, containing 480 g L−1 of chlorpyrifos, the active ingredient, was determined to be 622.8 µg a.i. L−1 for planarians. Sublethal effects were translated into a sign
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Sluys, R. "On Bdellasimilis Barwicki (Platyhelminthes : Tricladida) and its phyletic position." Invertebrate Systematics 4, no. 1 (1990): 149. http://dx.doi.org/10.1071/it9900149.

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The planarian Bdellasimilis barwicki is redescribed on the basis of newly collected and paratype material. The species is ectoconsortic on Australian freshwater turtles and has the following characteristic features: two posterior adhesive disks, voluminous false seminal vesicles, highly glandular common atrium, resorptive vesicles, and a gonopore at the posterior end of the body. The highly developed musculature around the mouth opening ensures that the mouth remains fully closed during the aberrant manner of feeding in which food items are enclosed in the pharyngeal cavity. B. barwicki should
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Boll, Piter Kehoma, Ilana Rossi, Silvana Vargas do Amaral, and Ana Maria Leal-Zanchet. "Regeneration in a Neotropical land planarian (Platyhelminthes, Tricladida)." Neotropical Biology and Conservation 18, no. 3 (2023): 163–76. http://dx.doi.org/10.3897/neotropical.18.e103357.

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Planarians are known for their ability to regenerate missing body parts. However, little is known about the regeneration ability of land planarians, especially regarding Neotropical species. Herein, we investigated the regeneration in the Neotropical land planarian Luteostriata abundans. Specimens were cut in two at different points along the body and monitored for 50 days. Larger and anterior pieces survived more than smaller posterior pieces. Anterior pieces that retained the pharynx continued to feed normally as intact animals, while posterior pieces that retained the pharynx lost its funct
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Zhang, Siqi, Danielle Hagstrom, Patrick Hayes, Aaron Graham, and Eva-Maria S. Collins. "Multi-Behavioral Endpoint Testing of an 87-Chemical Compound Library in Freshwater Planarians." Toxicological Sciences 167, no. 1 (2018): 26–44. http://dx.doi.org/10.1093/toxsci/kfy145.

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Abstract There is an increased recognition in the field of toxicology of the value of medium-to-high-throughput screening methods using in vitro and alternative animal models. We have previously introduced the asexual freshwater planarian Dugesia japonica as a new alternative animal model and proposed that it is particularly well-suited for the study of developmental neurotoxicology. In this article, we discuss how we have expanded and automated our screening methodology to allow for fast screening of multiple behavioral endpoints, developmental toxicity, and mortality. Using an 87-compound li
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Dissertations / Theses on the topic "Freshwater planarians"

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Leria, Florensa Laia. "Understanding the processes that shape the genetic diversity of freshwater planarians (Platyhelminthes, Tricladida, Dugesiidae) = Estudi dels processos que modelen la diversitat genètica en les planàries d'aigua dolça (Platyhelminthes, Tricladida, Dugesiidae)." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/668257.

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The main goal of the present thesis has been to shed light into the processes that shape the genetic diversity of organisms, focussing in the following factors: the type of reproduction, the morphological diversity of genitalia, the karyological diversity, and the paleogeographic and paleoclimatic events. To do so, we have used as model organisms two different genera of freshwater planarians, viz. the genus Schmidtea and several Dugesia species from the Western Mediterranean region, focussing on the species D. subtentaculata. The analysis of the impact of the type of reproduction into the
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Tan, Thomas Ching-Jen. "Telomere biology in the freshwater planarian Schmidtea mediterranea." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12308/.

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Freshwater planarian Schmidtea mediterranea is an emerging model for studying in vivo gene functions and regulation in native cell niches. The obligate asexual strain of this species reproduces by fission, in which succession of soma occurs without passing through the germline. To achieve this somatic immortality the somatic stem cells need to overcome the end replication problem. Therefore it can be hypothesised that somatic telomere maintenance in asexual S. mediterranea must possess a germ-like property, with which age-related erosions can be adequately repaired. In this PhD project, the te
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Domingues, Vasco Filipe de Castro. "Toxicity of silver nanoparticles and silver nitrate to the freshwater planarian Dugesia tigrina." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17016.

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Mestrado em Toxicologia e Ecotoxicologia<br>Atualmente, as nanopartículas de prata (AgNP) são bastante utilizadas em vários produtos devido às suas propriedades únicas e excecionais, nomeadamente a sua potente atividade antibacteriana. Algumas das suas aplicações comuns são em têxteis, produtos cosméticos e tintas. Deste modo, é esperada a presença de AgNP nos sistemas aquáticos. Tendo isto em consideração, o objetivo deste trabalho é descrever os efeitos tóxicos de AgNP de diferentes tamanhos, e comparar estes efeitos com os induzidos pela exposição a AgNO3 usando as características comportam
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Ofoegbu, Pearl Ugochi. "Ecotoxicological assessment of psychiatric drugs using freshwater planarians." Doctoral thesis, 2018. http://hdl.handle.net/10773/24865.

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Psychiatric pharmaceutical substances are emergent chemical contaminants of the freshwater environment. They are bioactive with many different modes of action and side effects, and are meant to elicit beneficial effects at low concentrations but eliciting toxicity at higher concentrations. One of the major challenges to risk assessment of psychiatric substances in freshwaters is the choice of test organisms. The main objective of the present study was to investigate if the freshwater planarian Schmidtea mediterranea could be used as test organisms for the assessment of ecotoxicological
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Simão, Fátima Cristina Paulino. "Ecotoxicological assessment of PAHs using the freshwater planarian Girardia tigrina." Doctoral thesis, 2020. http://hdl.handle.net/10773/28868.

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Freshwater planarians are animals that possess a set of features that has made them pivotal for research areas such as stem cell research, neurophar-macology, or ageing research. The appeal of these animals has stemmed from features such as the existence of adult stem cells distributed over their bodies, the presence of a simple brain sharing similarities with the vertebrate nervous system, or their apparent lack of ageing. The interest in freshwater planarians as experimental animals has spread to ecotoxicity testing, given features such as easy maintenance in laboratory setting, their sensit
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Guo, Tingxia. "Functional analysis of genes involved in regulating stem cell maintenance and differentiation in the freshwater planarian Schmidtea mediterranea /." 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3301142.

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Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007.<br>Source: Dissertation Abstracts International, Volume: 69-02, Section: B, page: 0774. Adviser: Joseph Henry. Includes bibliographical references (leaves 111-128) Available on microfilm from Pro Quest Information and Learning.
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Books on the topic "Freshwater planarians"

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Roman, Kenk. Revised list of the North American freshwater Planarians (Platyhelminthes:Tricladida:Paludicola). Smithsonian Institution Press, 1989.

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2

Masaharu, Kawakatsu, and University of Colorado (System). Museum., eds. Freshwater planarians of Colorado: With special reference to their vertical distribution in the Rocky Mountain National Park Region. University of Colorado Museum, 1989.

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Kenk, Roman, Oceanography and Limnology Program, and United States Environmental Protection. Freshwater Planarians of North America. Franklin Classics, 2018.

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Kenk, Roman, Oceanography and Limnology Program, and United States Environmental Protection. Freshwater Planarians of North America. Franklin Classics, 2018.

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Freshwater Planarians (Turbellaria) of North America. Creative Media Partners, LLC, 2022.

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Freshwater Planarians (Turbellaria) of North America. Creative Media Partners, LLC, 2022.

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Book chapters on the topic "Freshwater planarians"

1

Roberts-Galbraith, Rachel H. "RNAi Screening to Assess Tissue Regeneration in Planarians." In Methods in Molecular Biology. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-2172-1_27.

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AbstractOver the past several decades, planarians have emerged as a powerful model system with which to study the cellular and molecular basis of whole-body regeneration. The best studied planarians belong to freshwater flatworm species that maintain their remarkable regenerative capacity partly through the deployment of a population of adult pluripotent stem cells. Assessment of gene function in planarian regeneration has primarily been achieved through RNA interference (RNAi), either through the feeding or injection of double-stranded RNA (dsRNA). RNAi treatment of planarians has several adv
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Vila-Farré, Miquel, and Jochen C. Rink. "The Ecology of Freshwater Planarians." In Methods in Molecular Biology. Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7802-1_3.

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Pestana, João Luís Teixeira, and Pearl Ugochi Ofoegbu. "Ecotoxicity Assays Using Freshwater Planarians." In Toxicity Assessment. Springer US, 2021. http://dx.doi.org/10.1007/978-1-0716-1091-6_11.

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Teshirogi, Wataru. "On the origin of neoblasts in freshwater planarians (Turbellaria)." In Advances in the Biology of Turbellarians and Related Platyhelminthes. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4810-5_29.

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Baguñà, Jaume, Rafael Romero, Emili Saló, et al. "Growth, Degrowth and Regeneration as Developmental Phenomena in Adult Freshwater Planarians." In Experimental Embryology in Aquatic Plants and Animals. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4615-3830-1_7.

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Brown, David D. R., and Bret J. Pearson. "One FISH, dFISH, Three FISH: Sensitive Methods of Whole-Mount Fluorescent In Situ Hybridization in Freshwater Planarians." In In Situ Hybridization Methods. Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4939-2303-8_7.

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Teshirogi, Wataru, Fumio Ni-imura, and Sachiko Ishida. "Further survey of chromosomal polymorphisms in the freshwater planarian Polycelis auriculata." In Turbellarian Biology. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-2775-2_22.

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Kudoh, M., H. Teshima, and W. Teshirogi. "Dedifferentiation and redifferentiation of the penis of the freshwater planarian Bdellocephala brunnea." In Turbellarian Biology. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-2775-2_7.

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Sakurai, Takashige, and Saburo Ishii. "An electron microscope study of primary epidermis formation in freshwater planarian embryos." In Biology of Turbellaria and some Related Flatworms. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0045-8_26.

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García-Castro, Helena, Elena Emili, and Jordi Solana. "ACME Dissociation-Fixation, Flow Cytometry, and Cell Sorting of Freshwater Planarian Cells." In Methods in Molecular Biology. Springer US, 2023. http://dx.doi.org/10.1007/978-1-0716-3275-8_10.

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