Results 41 to 50 of about 4,937 (179)

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

Do Not Lose Your Head over the Unequal Regeneration Capacity in Prolecithophoran Flatworms

Biology, 2022
One of the central questions in studying the evolution of regeneration in flatworms remains whether the ancestral flatworm was able to regenerate all body parts, including the head.
Alexandra L. Grosbusch, Philip Bertemes, Bob Kauffmann, Clemens Gotsis, Bernhard Egger   +4 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

Field and laboratory observation of Mediterranean mussel Mytilus galloprovincialis predation by flatworm Stylochus mediterraneus

Aquaculture Reports
Recently, large numbers of Polyclad flatworms (Stylochus mediterraneus) have been observed in Istrian County shellfish farms connected to intensive ascidian fouling.
Luca Privileggio, Ivan Balković, Kristina Grozić, Dijana Pavičić-Hamer, Andrej Jaklin, Daniele Suman, Lea Brumnić, Maja Maurić Maljković, Hrvoje Labura, Srećko Oštir, Matija Hamer, Nikola Tanković, Bojan Hamer   +12 more
doaj   +1 more source

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

Structural Characterization and Spatial Mapping of Tetrodotoxins in Australian Polyclads

Marine Drugs, 2022
Tetrodotoxin (TTX) is a potent marine neurotoxin that occurs in several Australian phyla, including pufferfish, toadfish, gobies, and the blue-ringed octopus.
Justin M. McNab, Matthew T. Briggs, Jane E. Williamson, Peter Hoffmann, Jorge Rodriguez, Peter Karuso   +5 more
doaj   +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

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

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

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