Results 91 to 100 of about 5,745 (237)

Technical challenges in the implementation of macroinvertebrate DNA metabarcoding in river biomonitoring: A case study from peninsular Spain—Advantages, limitations and roadmap

open access: yesEcological Solutions and Evidence, Volume 6, Issue 3, July–September 2025.
This study evaluates the opportunities and challenges of using DNA metabarcoding of river macroinvertebrates for routine ecological status assessment under the EU Water Framework Directive. By reanalysing data from rivers in north‐west Spain, it identifies key sources of false positives and negatives, compares bulk and eDNA sampling with traditional ...
Álvaro Fueyo   +4 more
wiley   +1 more source

A COMPARISON OF SURVIVAL AND GROWTH IN JUVENILE ASTACUS LEPTODACTYLUS (ESCH.) AND PACIFASTACUS LENIUSCULUS (DANA) UNDER CONTROLLED CONDITIONS

open access: yesKnowledge and Management of Aquatic Ecosystems, 2006
The aim of this study was to compare survival and growth of juvenile narrow-clawed crayfish (Astacus leptodactylus) and signal crayfish (Pacifastacus leniusculus) fed only with experimental pellets (45% of proteins, 6% of fat, 20% crude fibre) under ...
ULIKOWSKI D., KRZYWOSZ T., ŚMIETANA P.
doaj   +1 more source

Colonization and dispersal rates of two non-native crayfish species (Pacifastacus leniusculus and Procambarus clarkii) in NE Portugal [PDF]

open access: yes, 2010
In Europe, a generalized regression of the native crayfish was observed during the past decades. Simultaneously, several non-native species spread in most countries.
Bernardo, J.M.   +3 more
core  

Rapid Establishment and Impact Assessment of the Redclaw Crayfish (Cherax quadricarinatus) Invasion in the Kruger National Park, South Africa

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 7, July 2025.
ABSTRACT Amidst the rapid degradation of the environment, protected areas act as a buffer for sensitive species against drivers of change. The Kruger National Park, in the Zambezian Lowveld Freshwater Ecoregion, encompasses two critical transboundary river basins, which are threatened by overexploitation, climate change and nonnative invasive species ...
Josie South   +10 more
wiley   +1 more source

New sites of the invasive signal crayfish, Pacifastacus leniusculus (Dana, 1852), from the Lutynia and Prosna rivers in Poland

open access: yesFisheries & Aquatic Life
This article presents new observations of the invasive signal crayfish, Pacifastacus leniusculus, in Poland. The species was detected for the first time in the Lutynia and Prosna rivers in southwest Poland.
Wróblewski Paweł   +2 more
doaj   +1 more source

Interacção entre duas espécies exóticas de lagostins (pacifastacus leniusculus e procambarus clarkii): estudo experimental com recurso à PIT-telemetria [PDF]

open access: yes, 2010
No rio Maçãs (bacia do Rio Douro), no Nordeste de Portugal, coexistem duas espécies de lagostins exóticos, o lagostim vermelho da Louisiana (Procambarus clarkii) e o lagostim sinal (Pacifastacus leniusculus).
Bernardo, J.M.   +4 more
core  

Prioritising Non‐Native Crayfish Species for Management in the Rhine‐Main Observatory Using the Dispersal‐Origin‐Status‐Impact (DOSI) Scheme

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 7, July 2025.
ABSTRACT Managing non‐native species remains a critical challenge in biodiversity conservation, highlighting the need for effective prioritisation frameworks that integrate ecological, economic and policy considerations. Given that biological invasions are a population‐level rather than a species‐level phenomenon, more nuanced assessment schemes are ...
Phillip J. Haubrock   +6 more
wiley   +1 more source

DESCRIPTION DE LA ZOOÉPIBIOSE DE L’ÉCREVISSE SIGNAL (PACIFASTACUS LENIUSCULUS, DANA) EN ASTACICULTURE

open access: yesKnowledge and Management of Aquatic Ecosystems, 2002
Des recherches ont été effectuées concernant la zooépibiose de l’écrevisse signal (Pacifastacus leniusculus, D.), provenant d’un centre d’astaciculture espagnol, au cours de la période 1997-1998.
CUELLAR M. C.   +2 more
doaj   +1 more source

Experimental approach for studying structural changes in axonal membrane upon nerve excitation [PDF]

open access: yes, 2011
The Hodgkin and Huxley (HH) model of action potential has become a central paradigm of neuroscience. Despite its ability to predict action potentials with remarkable accuracy, it fails to explain several biophysical findings related to the initiation and
Ahokas, Lauri Juhani
core  

THE WITHIN-CATCHMENT INVASION OF THE NON-INDIGENOUS SIGNAL CRAYFISH PACIFASTACUS LENIUSCULUS (DANA),IN UPLAND RIVERS

open access: yesKnowledge and Management of Aquatic Ecosystems, 2005
The American signal crayfish, Pacifastacus leniusculus, is an invasive species from North America that has been widely introduced through Europe, where it is a major threat to native European crayfish species and causing increasing concern because of its
BUBB D. H., THOM T. J., LUCAS M. C.
doaj   +1 more source

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