Results 21 to 30 of about 199,012 (156)

Consequences for lotic ecosystems of invasion by signal crayfish [PDF]

, 2012
PhDNon-native invasive species are major drivers of biodiversity loss and ecosystemlevel modification. The signal crayfish (Pacifastacus leniusculus) is a highly successful invasive species and demonstrates traits often seen in keystone species ...
Hayes, Richard Birchall
core   +4 more sources

Native European crayfish Astacus astacus competitive in staged confrontation with the invasive crayfish Faxonius limosus and Procambarus acutus.

PLoS ONE, 2022
The European native, noble crayfish (Astacus astacus) has suffered from a serious and long term population decline due to habitat destruction, water pollution and the impact of the invasive North American crayfish that are carriers of the crayfish plague
Ivo Roessink, Karina A E van der Zon, Sophie R M M de Reus, Edwin T H M Peeters   +3 more
doaj   +1 more source

Insight into the noble crayfish morphological diversity: a geometric morphometric approach

Knowledge and Management of Aquatic Ecosystems, 2022
The noble crayfish (Astacus astacus), a keystone species of high ecological, economic, and cultural importance in Europe, is threatened due to a long-term population decline caused by anthropogenic pressure on its habitats, the presence of non-indigenous
Lovrenčić Leona, Ferrón Humberto G., Grbin Dorotea, Maguire Ivana   +3 more
doaj   +1 more source

Controlled Infection Experiment With Aphanomyces astaci Provides Additional Evidence for Latent Infections and Resistance in Freshwater Crayfish

Frontiers in Ecology and Evolution, 2021
For 150 years the crayfish plague disease agent Aphanomyces astaci has been the cause of mass mortalities among native European crayfish populations. However, recently several studies have highlighted the great variability of A.
Caterina Francesconi, Jenny Makkonen, Anne Schrimpf, Japo Jussila, Harri Kokko, Kathrin Theissinger, Kathrin Theissinger   +6 more
doaj   +1 more source

Three crayfish species of different origin in a medium-sized river system: a new state of affairs

Knowledge and Management of Aquatic Ecosystems, 2021
In view of contemporary changes in aquatic environments, determining the distribution of both native and emerging invasive crayfish species is increasingly important.
Radtke Grzegorz, Bernaś Rafał, Dębowski Piotr, Ulikowski Dariusz, Kapusta Andrzej   +4 more
doaj   +1 more source

EXPLOITATION IS A PREREQUISITE FOR CONSERVATION OF ASTACUS ASTACUS

Knowledge and Management of Aquatic Ecosystems, 2004
The noble crayfish, Astacus astacus, is highly valued from a recreational and economical point of view. In most noble crayfish areas, there are long traditions of crayfish catching.
TAUGBØL T.
doaj   +1 more source

Exponential increase of signal crayfish in running waters in Sweden – due to illegal introductions?

Knowledge and Management of Aquatic Ecosystems, 2011
Sweden has only one indigenous species of crayfish, the noble crayfish (Astacus astacus, Fabricius). There has been a steady decline of noble crayfish populations in Sweden since 1907, mainly due to the crayfish plague.
Bohman P., Degerman E., Edsman L., Sers B.   +3 more
doaj   +1 more source

Evaluating techniques for sampling stream crayfish (paranephrops planifrons) [PDF]

, 1997
We evaluated several capture and analysis techniques for estimating abundance and size structure of freshwater crayfish (Paranephrops planifrons) (koura) from a forested North Island, New Zealand stream to provide a methodological basis for future ...
Kevin J. Collier, Charles F. Rabeni, Collier, Kevin J., Rabeni, C.F., Hicks, Brendan J., Parkyn, Stephanie M., Brendan J. Hicks, Stephanie M. Parkyn   +7 more
core   +1 more source

STATUS OF FRESHWATER CRAYFISH IN LATVIA

Knowledge and Management of Aquatic Ecosystems, 2005
There are three crayfish species present in Latvia: the European noble crayfish (Astacus astacus), the narrow-clawed crayfish (Astacus leptodactylus), and the North-American signal crayfish (Pacifastacus leniusculus) species. Probably only noble crayfish
ARENS A., TAUGBØL T.
doaj   +1 more source

Invasive signal crayfish and native noble crayfish show trophic niche shrinkage in sympatry [PDF]

NeoBiota
Studying the coexistence of native species and invasive species with similar functional traits, habitat usage, and feeding habits is crucial for understanding the dynamics of invasion and ecological changes in the invaded ecosystem.
Fabio Ercoli, Timo J. Ruokonen, Martin Bláha, Antonín Kouba, Miloš Buřič, Lukaš Veselý   +5 more
doaj   +3 more sources