Results 61 to 70 of about 5,745 (237)

Impact of the Highly Invasive Signal Crayfish (Pacifastacus leniusculus) on Freshwater Macroinvertebrate Communities

Freshwater Biology, Volume 71, Issue 2, February 2026.
ABSTRACT Invasive non‐native species threaten freshwater ecosystems, disrupting the functioning and structure of the food chain and potentially leading to biodiversity loss. As omnivores, crayfish can modify their environment, directly affecting organisms such as macroinvertebrates.
António Barbosa Nogueira, Bruno Oliveira, Janeide Padilha, Simone Varandas, Amílcar Teixeira, Ronaldo Sousa   +5 more
wiley   +1 more source

Host shift to non-native species or ecological dead end? Endangered branchiobdellidans (Annelida: Clitellata) found on introduced Signal Crayfish in Japan

Knowledge and Management of Aquatic Ecosystems
Symbionts, including parasites, are usually small and thus have been overlooked for their existence and scientific research. In the context of biological invasion, host shifts between native and non-native species occur. Since symbionts often affect host
Konno Tomoaki, Tanaka Kazunori, Koizumi Itsuro   +2 more
doaj   +1 more source

A STUDY ON THE POSSIBLE EFFECT OF TWO CRAYFISH SPECIES ON EPILITHIC ALGAE IN A MOUNTAIN STREAM FROM CENTRAL SPAIN

Knowledge and Management of Aquatic Ecosystems, 2006
The effects on epilithic algae of increasing densities of two crayfish species, Austropotamobius italicus and Pacifastacus leniusculus, the latter recently introduced in Spain, have been monitored using riverine enclosures, within a large experimental ...
ARCE J. A., ALONSO F., RICO E., CAMACHO A.   +3 more
doaj   +1 more source

The home range of the signal crayfish in a British lowland river [PDF]

, 1997
The signal crayfish Pacifastacus leniusculus (Dana), a native of north-western North America, is now a common resident in some British fresh waters following its introduction to England in 1976 (Lowery & Holdich 1988).
Guan, Rui-Zhang, Wiles, Peter
core  

First European Interlaboratory Ring Test Study to Detect DNA of Crayfish and the Crayfish Plague Pathogen From Water Samples

Environmental DNA, Volume 8, Issue 1, January–February 2026.
This European interlaboratory ring test highlights how methodological differences affect eDNA‐based detection of crayfish and the crayfish plague pathogen, emphasizing the need for harmonized protocols to improve reliability in conservation and disease monitoring efforts.
Patrik Bohman, Kristofer Andersson, David A. Strand, Thomas Baudry, Kathrin Theissinger, Ivana Maguire, Michael Aluma, Anna Aspán, Martin Bláha, Ljudevit Luka Bostjancic, Carine Delaunay, Javier Diéguez‐Uribeondo, Lennart Edsman, Fabio Ercoli, Jean‐Yves Georges, Frédéric Grandjean, Bogna Griffin, Terhi Iso‐Touru, Birgitta Jacobsson, Katrin Kaldre, Alex King, Pavel Kozák, Lucija Markulin, María Martínez‐Ríos, Laura Martín‐Torrijos, Saima Mohammad, Michaela Mojžišová, Teja Petra Muha, Ludvig Orsén, John Persson, Simone Roberto Rolando Pisano, Lilian Pukk, Björn Rogell, Timo J. Ruokonen, Heike Schmidt‐Posthaus, Jonas Steiner, Linda Söderberg, Anti Vasemägi, Armin Zenker, Adam Petrusek   +39 more
wiley   +1 more source

The mycobiome of a successful crayfish invader and its changes along the environmental gradient

Animal Microbiome, 2023
Background The microbiome plays an important role in biological invasions, since it affects various interactions between host and environment. However, most studies focus on the bacteriome, insufficiently addressing other components of the microbiome ...
Paula Dragičević, Ana Bielen, Jurica Žučko, Sandra Hudina   +3 more
doaj   +1 more source

Transglutaminase 1 and 2 are localized in different blood cells in the freshwater crayfish Pacifastacus leniusculus.

Fish and Shellfish Immunology, 2020
In the present study we show that hemocytes in the freshwater crayfish Pacifastacus leniusculus express two different transglutaminases. We describe the sequence of a previously unknown TGase (Pl_TGase1) and named this as Pl_TGase2 and compared this ...
Kingkamon Junkunlo, K. Söderhäll, I. Söderhäll   +2 more
semanticscholar   +1 more source

Unraveling multipredator impacts in salmon‐bearing rivers using quantitative DNA metabarcoding

Ecological Applications, Volume 35, Issue 8, December 2025.
Abstract Ecological impacts of invasive species are mounting as their numbers and geographic extent continue to increase. Across extensive parts of their range, Pacific salmon (Oncorhynchus spp.) smolts face an expanding gauntlet of nonnative predators during their seaward migration.
John J. Winkowski, Lisa M. Crosson, Julian D. Olden   +2 more
wiley   +1 more source

RELATIONSHIPS BETWEEN CHANGES IN HABITAT CONDITIONS AND POPULATION DENSITY OF AN INTRODUCED POPULATION OF SIGNAL CRAYFISH (PACIFASTACUS LENIUSCULUS IN A FLUVIAL SYSTEM.

Knowledge and Management of Aquatic Ecosystems, 2001
After the disappearance of the native crayfish in many rivers in Biscay, Basque Country, Spain, the signal crayfish Pacifastacus leniusculus was introduced in the main fluvial stretches and several breeding populations have established.
RALLO A., GARCIA-ARBERAS L., ANTON A.
doaj   +1 more source

Prevalence of the crayfish plague pathogen Aphanomyces astaci in populations of the signal crayfish Pacifastacus leniusculus in France: evaluating the threat to native crayfish.

PLoS ONE, 2013
Aphanomyces astaci, the crayfish plague pathogen, first appeared in Europe in the mid-19(th) century and is still responsible for mass mortalities of native European crayfish.
Lenka Filipová, Adam Petrusek, Klára Matasová, Carine Delaunay, Frédéric Grandjean   +4 more
doaj   +1 more source