Results 41 to 50 of about 231,491 (215)

Variation in Resistance to the Invasive Crayfish Plague and Immune Defence in the Native Noble Crayfish [PDF]

Annales Zoologici Fennici, 2014
Emerging diseases, such as the crayfish plague, are a worldwide problem with serious ecological and economic impacts. Under the framework of ecological immunology, we investigated whether variation in crayfish plague resistance, the indicators of immune defence (encapsulation response, phenoloxidase and lytic activity), and the exploration behaviour ...
Gruber, Christina, Kortet, Raine, Vainikka, Anssi, Hyvärinen, Pekka, Rantala, Markus J., Pikkarainen, Ari, Jussila, Japo, Makkonen, Jenny, Kokko, Harri, Hirvonen, Heikki   +9 more
openaire   +2 more sources

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

External Abnormalities and Body Deformities of Noble Crayfish (Malacostraca, Astacidae: Astacus astacus) of West Carpathian Massive (Slovakia): Possible Causes for this Phenomenon

Ekológia (Bratislava), 2022
Astacus astacus (Linnaeus, 1758) is a vulnerable species. Through comprehensive monitoring, we have determined the current spatial distribution of the populations in two streams of the Western Carpathian Massif.
Z. Krumpálová, Lukáš Hujo, Filip Miklánek, S. David   +3 more
semanticscholar   +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

Post-mating spermatophore storage strategies in two species of crayfish: implications for broodstock management

Animal, 2018
Female crayfish stores male gametes after mating until the beginning of egg laying and fertilization. The aim of the present study was to investigate the duration of post-mating spermatophore storage as well as the timing and temperature of spawning in ...
B. Yazicioglu, A. Kouba, P. Kozák, H. Niksirat   +3 more
doaj   +1 more source

Аge structure and fecundity of the noble crayfish populations in abandoned quarries

Proceedings of the National Academy of Sciences of Belarus Biological Series, 2022
The population of noble crayfish (Astacus astacus) was researched in quarries of an old brick plant in Molodechno district of Minsk region. Rare disappearing noble crayfish was found in 10 closed quarries. The presence of crayfish in closed quarries that
A. Alekhnovich
semanticscholar   +1 more source

Comparative transcriptome analysis of noble crayfish and marbled crayfish immune response to Aphanomyces astaci challenges

bioRxiv, 2021
Introduction of invasive North American crayfish species and their pathogen Aphanomyces astaci has significantly contributed to the decline of European freshwater crayfish populations. In this study, noble crayfish, a susceptible native European species,
L. L. Boštjančić, Caterina Francesconi, Christelle Rutz, L. Hoffbeck, L. Poidevin, Arnaud Kress, J. Jussila, Jenny Makkonen, B. Feldmeyer, Miklós Bálint, O. Lecompte, K. Theissinger   +11 more
semanticscholar   +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

Timing and quantifying Aphanomyces astaci sporulation from the noble crayfish suffering from the crayfish plague

Veterinary Microbiology, 2013
Aphanomyces astaci sporulation is crucial for the spreading potential of this disease agent. For the first time, we are reporting timing and quantity of A. astaci spores released from noble crayfish (Astacus astacus) suffering from crayfish plague under practical aquatic conditions. We infected nine noble crayfish with A.
J, Makkonen, D A, Strand, H, Kokko, T, Vrålstad, J, Jussila   +4 more
openaire   +2 more sources