Results 1 to 10 of about 737 (157)

The First Analysis of Synaptonemal Complexes in Jawless Vertebrates: Chromosome Synapsis and Transcription Reactivation at Meiotic Prophase I in the Lamprey Lampetra fluviatilis (Petromyzontiformes, Cyclostomata) [PDF]

Life, 2023
Transcription is known to be substage-specific in meiotic prophase I. If transcription is reactivated in the mid pachytene stage in mammals when synapsis is completed, then this process is observed in the zygotene stage in insects.
Sergey Matveevsky, Nikolay Tropin, Aleksandr Kucheryavyy, Oxana Kolomiets   +3 more
doaj   +4 more sources

Phylogenetic and biogeographic history of brook lampreys (Lampetra: Petromyzontidae) in the river basins of the Adriatic Sea based on DNA barcode data. [PDF]

Ecol Evol, 2023
The Adriatic brook lamprey, Lampetra zanandreai Vladykov 1955, was described from northeastern Italy. Its distribution is thought to include left tributaries of the River Po and the river basins of the Adriatic Sea from the River Po to the River Isonzo ...
Rüber L, Gandolfi A, Foresti D, Paltrinieri L, Splendiani A, Seehausen O.   +5 more
europepmc   +5 more sources

An assessment of terminology for intraspecific diversity in fishes, with a focus on “ecotypes” and “life histories” [PDF]

Ecology and Evolution, 2021
Understanding and preserving intraspecific diversity (ISD) is important for species conservation. However, ISD units do not have taxonomic standards and are not universally recognized.
Benjamin J. Clemens, Carl B. Schreck
doaj   +3 more sources

Revalidation of the Argentinian pouched lamprey Geotria macrostoma (Burmeister, 1868) with molecular and morphological evidence. [PDF]

PLoS ONE, 2020
BACKGROUND:The Argentinian pouched lamprey, classified as Petromyzon macrostomus Burmeister, 1868 was first described in 1867 in De La Plata River, in Buenos Aires, Argentina, and subsequently recorded in several rivers from Patagonia. Since its original
Carla Riva-Rossi, Diego Andrés Barrasso, Cindy Baker, Analía Pamela Quiroga, Claudio Baigún, Néstor Guillermo Basso   +5 more
doaj   +5 more sources

New Geographic Distributional Records for Two Lampreys (Petromyzontiformes: Petromyzontidae) in Arkansas, with Notes on Histopathology [PDF]

Journal of the Arkansas Academy of Science, 2023
The recent update (2nd edition) of the Fishes of Arkansas includes what is known, to date, on the geographic distribution of five species of lampreys that occur in the state.
Camus, A.C., Cloutman, D.G., Leis, E.M., McAllister, C.T., Robison, H.W.   +4 more
exaly   +5 more sources

Effects of cadmium on morphological structure of sperm in Caspiomyzon wagneri (Kessler, 1870) (Petromyzontiformes : Petromyzontidae) [PDF]

Caspian Journal of Environmental Sciences, 2017
The present study aimed to investigate effects of the heavy metal Cd on the sperm morphological indices of Caspimyzon wagneri. The sperm were exposed to 0.01, 0.1, 1, 10, 100 and 1000 mg.L-1 Cd for three minutes, three and 36 hours.
Eagderi, S., Mojazi Amiri, B., Poorbagher, H., Nasrollah Pourmoghadam, M., Nemati Mobin, N.   +4 more
doaj   +7 more sources

The Functional Anatomy of the Cornea and Anterior Chamber in Lampreys: Insights From the Pouched Lamprey, Geotria australis (Geotriidae, Agnatha) [PDF]

Frontiers in Neuroanatomy, 2021
Extant lampreys (Petromyzontiformes) are one of two lineages of surviving jawless fishes or agnathans, and are therefore of critical importance to our understanding of vertebrate evolution.
H. Barry Collin, Julian Ratcliffe, Shaun P. Collin, Shaun P. Collin   +3 more
doaj   +2 more sources

Histomorphological and Dynamical Changes in Female River Lampreys during Maturation under Controlled Conditions as a Part of Lamprey Restoration Programs [PDF]

Animals
More than 40 species of lampreys (Petromyzontiformes) are known worldwide. Some of them are parasitic and feed on the blood of fish or other aquatic animals. Lampreys spawn once in their lifetime, after which they die.
Joanna Nowosad, Roman Kujawa, Shahid Sherzada, Dariusz Kucharczyk, Mateusz Mikiewicz, Katarzyna Dryl, Andrzej Kapusta, Joanna Łuczyńska, Hany M. R. Abdel-Latif   +8 more
doaj   +2 more sources

New technology for an ancient fish: A lamprey life cycle modeling tool with an R Shiny application. [PDF]

PLoS ONE
Lampreys (Petromyzontiformes) are an ancient group of fishes with complex life histories. We created a life cycle model that includes an R Shiny interactive web application interface to simulate abundance by life stage.
Dylan G E Gomes, Joseph R Benjamin, Benjamin J Clemens, Ralph Lampman, Jason B Dunham   +4 more
doaj   +2 more sources

Discovery of Eudontomyzon sp. (Petromyzontidae) larvae in lakes and a characterisation of their habitats

Nature Conservation Research: Заповедная наука, 2021
The extended freshwater life of Petromyzontiformes larvae (ammocoetes) takes place mainly in lotic waters where it has been studied in detail. Information on ammocoetes in lentic habitats is extremely limited, with few data on the occurrence of specimens
Aleksandr O. Zvezdin, Natalia V. Polyakova, Aleksandr V. Kucheryavyy, Vladimir R. Khokhryakov, Anzhelika V. Kolotei, Dmitriy S. Pavlov   +5 more
doaj   +1 more source