Results 41 to 50 of about 3,063 (181)

Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment

eLife, 2019
Animals detect light using opsin photopigments. Xenopsin, a recently classified subtype of opsin, challenges our views on opsin and photoreceptor evolution.
Kate A Rawlinson, Francois Lapraz, Edward R Ballister, Mark Terasaki, Jessica Rodgers, Richard J McDowell, Johannes Girstmair, Katharine E Criswell, Miklos Boldogkoi, Fraser Simpson, David Goulding, Claire Cormie, Brian Hall, Robert J Lucas, Maximilian J Telford   +14 more
doaj   +1 more source

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

Natural Products in Polyclad Flatworms

Marine Drugs, 2021
Marine invertebrates are promising sources of novel bioactive secondary metabolites, and organisms like sponges, ascidians and nudibranchs are characterised by possessing potent defensive chemicals. Animals that possess chemical defences often advertise this fact with aposematic colouration that potential predators learn to avoid.
Justin M. McNab, Jorge Rodríguez, Peter Karuso, Jane E. Williamson   +3 more
openaire   +3 more sources

Sticking Together an Updated Model for Temporary Adhesion

Marine Drugs, 2022
Non-parasitic flatworms are known to temporarily attach to the substrate by secreting a multicomponent bioadhesive to counteract water movements. However, to date, only species of two higher-level flatworm taxa (Macrostomorpha and Proseriata) have been ...
Philip Bertemes, Alexandra L. Grosbusch, Anik Geschwindt, Bob Kauffmann, Willi Salvenmoser, Birte Mertens, Robert Pjeta, Bernhard Egger, Peter Ladurner   +8 more
doaj   +1 more source

The Embryonic Development of the Cotylean Polyclad Phrikoceros jannetae

Acta Zoologica, EarlyView.
ABSTRACT Polyclads exhibit distinct developmental modes ranging from direct to indirect development, with several transitional stages also recognised. The existence of an indirect developmental mode in polyclads with a planktonic life history stage in the form of a free‐swimming larva is unique among all free‐living flatworms and makes polyclads a ...
Mehrez Gammoudi, Bernhard Egger, Isabel L. Dittmann, Verónica N. Bulnes, Pavel Tomancak, Abdel Halim Harrath, Johannes Girstmair   +6 more
wiley   +1 more source

AI‐Assisted Morphometric Analysis and Molecular Phylogeny for a Dactylogyrid (Monopisthocotyla) Skin Parasite of an Ornamental Crenuchid Fish From Brazil

Acta Zoologica, EarlyView.
ABSTRACT This study presents a formal description and taxonomic appraisal of Cacatuocotyle adrianoi sp. n., a Neotropical parasite belonging to the family Dactylogyridae, integrating AI‐assisted morphometric analyses, molecular data, and phylogenetic reconstruction. Phylogenetic analyses recovered Cacatuocotyle adrianoi sp. n.
J. C. C. Aguiar, M. M. Osaki‐Pereira, N. G. Silva, P. D. Mathews, R. J. Silva   +4 more
wiley   +1 more source

A mex3 homolog is required for differentiation during planarian stem cell lineage development

eLife, 2015
Neoblasts are adult stem cells (ASCs) in planarians that sustain cell replacement during homeostasis and regeneration of any missing tissue. While numerous studies have examined genes underlying neoblast pluripotency, molecular pathways driving ...
Shu Jun Zhu, Stephanie E Hallows, Ko W Currie, ChangJiang Xu, Bret J Pearson   +4 more
doaj   +1 more source

Pejerrey (Odontesthes bonariensis) Under Siege: Main Infectious Diseases and Their Role in Aquaculture and Wild Populations Amidst Environmental Change

Journal of Fish Diseases, Volume 48, Issue 4, April 2025.
ABSTRACT The pejerrey (Odontesthes bonariensis) is a key species for recreational and commercial fisheries in Argentina and holds significant aquaculture potential. It has been introduced to various countries worldwide, including Japan, where intensive aquaculture has developed.
Aarón Torres‐Martínez, Miguel Mancini, Fabian Grosman, Gustavo Manuel Somoza, Carlos Augusto Strüssmann   +4 more
wiley   +1 more source

The microbiome of the marine flatworm Macrostomum lignano provides fitness advantages and exhibits circadian rhythmicity

Communications Biology, 2023
A circadian rhythm and the capacity to manage fitness during limited food availability is identified in the microbiome of the marine flatworm.
Yuanyuan Ma, Jinru He, Michael Sieber, Jakob von Frieling, Iris Bruchhaus, John F. Baines, Ulf Bickmeyer, Thomas Roeder   +7 more
doaj   +1 more source

Circadian regulation of reproduction and neoblast cell division in the catenulid flatworm Stenostomum virginianum (Platyhelminthes)

Photochemistry and Photobiology, EarlyView.
The circadian clock and melatonin coordinate homeostasis in many animals, yet their influence on reproduction and neoblast proliferation has only been shown in triclads. This study demonstrates that the early‐branching catenulid Stenostomum virginianum contains photoreceptive refractile bodies, synthesizes endogenous melatonin, and that exogenous ...
Daniel L. Stanton, Ian D. Deas, J. Kennon Smith, Samuel B. Robinson, Adam M. Reitzel, Julian P. S. Smith III   +5 more
wiley   +1 more source