Results 41 to 50 of about 12,958 (221)

Compositional Analysis of Flatworm Genomes Shows Strong Codon Usage Biases Across All Classes

Frontiers in Genetics, 2019
In the present work, we performed a comparative genome-wide analysis of 22 species representative of the main clades and lifestyles of the phylum Platyhelminthes.
Guillermo Lamolle, Santiago Fontenla, Gastón Rijo, Jose F. Tort, Pablo Smircich, Pablo Smircich   +5 more
doaj   +1 more source

The exceptional stem cell system of Macrostomum lignano : screening for gene expression and studying cell proliferation by hydroxyurea treatment and irradiation [PDF]

, 2007
BackgroundFlatworms are characterized by an outstanding stem cell system. These stem cells (neoblasts) can give rise to all cell types including germ cells and power the exceptional regenerative capacity of many flatworm species.
Pfister, Daniela, De Mulder, Katrien, Philipp, Isabelle, Kualies, Georg, Hrouda, Martina, Eichberger, Paul, Borgonie, Gaetan, Hartenstein, Volker, Ladurner, Peter   +8 more
core   +2 more sources

Comprehensive Evaluation of Bisphenol A Toxicity Reveals Neurobehavioral, Metabolic, and Reproductive Impairments in Girardia tigrina

Environmental Toxicology, EarlyView.
ABSTRACT Bisphenol A (BPA), a common industrial chemical used in plastics and consumer products, is increasingly detected in aquatic environments, raising serious concerns about its potential ecological impacts. This study evaluated the sublethal and acute toxic effects of BPA on the freshwater planarian Girardia tigrina, a recognized model for ...
Raquel de Jesus Selestrino, Felipe Schaly, Welligton Luciano Braguini   +2 more
wiley   +1 more source

Prevalence, intensity and abundance of endoparasites in Oreochromis niloticus and Tilapia zilli (Pisces: Cichlidae) from Asa Dam, Ilorin, Nigeria

Cuadernos de investigación UNED, 2015
Disease is an important factor in fisheries, affecting both wild and cultured species. Using standard parasitological techniques we determined the prevalence, mean intensity and abundance of endoparasites from 250 specimens of two cichlids, Oreochromis ...
C. Ebube Amaechi
doaj   +1 more source

Flatworms have lost the right open reading frame kinase 3 gene during evolution [PDF]

, 2015
All multicellular organisms studied to date have three right open reading frame kinase genes (designated riok-1, riok-2 and riok-3). Current evidence indicates that riok-1 and riok-2 have essential roles in ribosome biosynthesis, and that the riok-3 gene
Amani, Parisa, Ansell, Brendan R. E., Boag, Peter R., Breugelmans, Bert, Gasser, Robin B., Hofmann, Andreas, Jex, Aaron R., Sternberg, Paul W., Stroehlein, Andreas J., Young, Neil D.   +9 more
core   +1 more source

Live large flatworm in intestine

Pan African Medical Journal, 2021
A 40-year male presented to the emergency department with the complaints of fatigue that had progressively worsened over the period of 3 months. He had recently emigrated from Mexico, where he worked on a farm and eaten raw watercress. Clinical examination revels pallor of oral mucosa.
Medhavi Vivek Joshi, Chaitanya Ajay Kulkarni   +1 more
openaire   +3 more sources

The Employment of Hydrogen Peroxide in Water Disinfection Poses a Threat to Aquatic Ecosystems Because of Its Toxicity to Nontarget Organisms

Environmental Toxicology, EarlyView.
ABSTRACT Hydrogen peroxide is widely used in water and wastewater treatment, particularly in advanced oxidation processes that aid in the degradation of compounds and microbial disinfection. Despite concerns about potential environmental contamination, its impact on freshwater ecosystems remains inadequately studied.
Letícia Queiroz Almeida, Thayrine Dias Carlos, Leydiane Barbosa Bezerra, Rone S. Barbosa, Nelson Luís Gonçalves Dias Souza, Douglas Henrique Pereira, Renato Almeida Sarmento, Grasiele Soares Cavallini   +7 more
wiley   +1 more source

The regenerative flatworm Macrostomum lignano, a model organism with high experimental potential [PDF]

, 2018
Understanding the process of regeneration has been one of the longstanding scientific aims, from a fundamental biological perspective, as well as within the applied context of regenerative medicine.
Berezikov, Eugene, Grudniewska, Magda, Mouton, Stijn, Wudarski, Jakub   +3 more
core   +2 more sources

Fish Space Use and Behavior in an Aquarium: The Use of Microhabitats as Enrichment

Zoo Biology, EarlyView.
The inclusion of microhabitats in a stream tank serves as environmental enrichment for fish in human care. ABSTRACT Environmental enrichment is an important tool to maintain the health and well‐being of animals in human care, but studies of environmental enrichment for fish in human care have lagged behind those of land animals.
Avery Millard, Ben Stenger, Zach Anderson, Justin Ballew, Hannah Fallon, Olivia Lowman, Elizabeth McAllister, Jessica Morales Valenzuela, Andrew Stuckey, Zainab Tanveer, Quinn Towery, Sally Tyrell, Andy Wall, Anna George, Hope Klug   +14 more
wiley   +1 more source

The evolutionary terrestrialization of planarian flatworms (Platyhelminthes, Tricladida, Geoplanidae): a review and research programme [PDF]

Zoosystematics and Evolution, 2019
The terrestrialization of animal life from aquatic ancestors is a key transition during the history of life. Planarian flatworms form an ideal group of model organisms to study this colonization of the land because they have freshwater, marine, and ...
Ronald Sluys
doaj   +3 more sources