Results 171 to 180 of about 1,850 (197)

Recent acute crayfish mortality reveals Aphanomyces astaci presence in Bosnia and Herzegovina

Journal of Invertebrate Pathology, 2017
Although the introduction of the crayfish plague pathogen Aphanomyces astaci to Europe is responsible for substantial declines in native crayfish populations throughout the whole continent, its presence has never been officially confirmed in many European regions, including most of the Balkan Peninsula. We demonstrate that the recent crayfish mortality
Agata Mrugała, Radek Šanda, Adam Petrusek, Dario Marić, Jasna Vukić   +4 more
openaire   +2 more sources

The secondary zoospore of Aphanomyces astaci and A. laevis (Oomycetes, Saprolegniales)

Nordic Journal of Botany, 1984
The ultrastructure of the secondary zoospores of Aphanomyces astaci and A. laevis was compared. The general appearance of the organelles and their compartmental–ization is the same, but some subtle differences were found. A. laevis
L. Cerenius, L. W. Olson, L. Lange, K. Söderhäll   +3 more
openaire   +1 more source

On the Physiology of Zoospore Production in Aphanomyces astaci

Physiologia Plantarum, 1969
Abstract Aphunomgces astaci, Saprolegniaceae, the crayfish plague parasite, grows well in a buffered peptone ‐ glucose ‐ mineral salt medium but does not normally produce spores during growth in this medium. Sporulation is, however, easily induced by transfer to pond water.
openaire   +1 more source

Crayfish plague Aphanomyces astaci detected in redclaw crayfish, Cherax quadricarinatus in Taiwan

Journal of Invertebrate Pathology, 2016
Between December 2013 and January 2014, five outbreaks of an unknown disease with moderate to high cumulative mortality were observed among the freshwater redclaw crayfish (Cherax quadricarinatus) populations at four crayfish farms in Miaoli and Changhua counties (northern Taiwan) and at one crayfish farm in Pingtung County (southern Taiwan ...
Chia-Yu, Hsieh, Chen-Wei, Huang, Yi-Cheng, Pan   +2 more
openaire   +2 more sources

Studies on the Crayfish Plague Fungus Aphanomyces astaci

Physiologia Plantarum, 1966
AbstractA mycelial suspension of the crayfish plague fungus, Aphanomyces astaci, was able to produce large numbers of zoospores, when transferred to redistilled water, at 20°C, even after storage for months at 2°C. Spore production was greater in redistilled water than in tap water and heavier under shake conditions than under stationary ones.
openaire   +1 more source

Hosts and transmission of the crayfish plague pathogen Aphanomyces astaci: a review

Journal of Fish Diseases, 2016
AbstractThe crayfish plague pathogen, Aphanomyces astaci Schikora, has become one of the most well‐studied pathogens of invertebrates. Since its introduction to Europe in the mid‐19th century, it has caused mass crayfish mortalities, resulting in drastic declines of local populations.
J, Svoboda, A, Mrugała, E, Kozubíková-Balcarová, A, Petrusek   +3 more
openaire   +2 more sources

Laboratory investigations of the pathogenicity of Aphanomyces astaci for Irish freshwater crayfish

Hydrobiologia, 1990
Crayfish plague, caused by the oomycete Aphanomyces astaci, was first diagnosed in Irish stocks of Austropotamobius pallipes from a midlands limestone lake and crayfish farm in October, 1987. Behavioural activity of infected crayfish was monitored and the position at death noted.
M. Matthews, J. D. Reynolds
openaire   +1 more source

Blood reactions in vitro in crayfish against a fungal parasite, Aphanomyces astaci

Journal of Invertebrate Pathology, 1972
Abstract The immediate and subsequent reactions in crayfish blood upon making contact with hyphae of the crayfish plague fungus were observed in vitro. Blood cells agglomerated and clumped rapidly on the hyphae in streaming blood. Very brief contact by chance with a hypha, or with cell extensions from cells or a cell clump on the hypha, caused ...
Torgny Unestam, Jan-Erik Nylund
openaire   +1 more source

Chemotaxis in Aphanomyces astaci, an arthropod-parasitic fungus

Journal of Invertebrate Pathology, 1984
Lage Cerenius, Kenneth Söderhäll
openaire   +1 more source

Hostitelé a přenos původce račího moru Aphanomyces astaci

2015
The crayfish plague pathogen, the oomycete Aphanomyces astaci, has been decimating populations of European crayfish species for more than 150 years, and is therefore considered one of the 100 worst world's invasive species. A. astaci is highly specialised for a parasitic life, but it can be isolated from moribund crayfish and grown on synthetic media ...
openaire   +3 more sources