Results 151 to 160 of about 802 (185)

Mycoplasma-Like Structures in the Aquatic Fungus Aphanomyces astaci

Science, 1974
The hyphae of a nonzoosporulating strain of Aphanomyces astaci contain numerous structures which most closely resemble published micrographs of certain mycoplasmas. Two normal strains of the same species do not contain these mycoplasma-like bodies.
I B, Heath, T, Unestam
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Aphanomyces astaci: isolation and culture

Journal of Fish Diseases, 1986
Abstract. Methods for the isolation and culture of Aphanomyces astaci, the causative organism of crayfish plague, are presented. The sensitivity of the pathogen to various antimicrobial agents was investigated, and a combination of penicillin G and oxolinic acid was chosen to provide a selective medium for isolation. A full description of the pathogen
D. J. ALDERMAN, JANE L. POLGLASE
openaire   +1 more source

Crayfish plague epizootics in Germany-classification of two German isolates of the crayfish plague fungus Aphanomyces astaci by random amplification of polymorphic DNA

Diseases of Aquatic Organisms, 1999
Following 2 outbreaks of crayfish plague in southern Germany, the causative agent, the oomycete fungus Aphanomyces astaci, was isolated from the diseased Astacus astacus.
Birgit Oidtmann, R Hoffmann, Kenneth Söderhäll   +2 more
exaly   +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
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Wound reactions and Aphanomyces astaci growth in crayfish cuticle

Journal of Invertebrate Pathology, 1980
Abstract Superficial wounding of crayfish soft cuticle by removal of the epicuticle caused hemocyte aggregation beneath the wound. The aggregation seemed to be induced by osmotic factors. Subsequently, melanin was only formed in parts of the wound region.
Lars Nyhlén, Torgny Unestam
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Physiological Variation in Strains of Aphanomyces astaci

Physiologia Plantarum, 1971
AbstractPhysiological variation was found both between and within strains of the crayfish plague fungus, Aphanomyces astaci, in culture.The loss of capacity to produce spores was irreversible while losses of motility and virulence to the crayfish were reversible changes.
T. UNESTAM, E. SVENSSON
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Resistance to the crayfish plague pathogen, Aphanomyces astaci, in two freshwater shrimps

Journal of Invertebrate Pathology, 2014
Aphanomyces astaci, the causal agent of the crayfish plague, has recently been confirmed to infect also freshwater-inhabiting crabs. We experimentally tested the resistance of freshwater shrimps, another important decapod group inhabiting freshwaters, to this pathogen.
J, Svoboda, A, Mrugała, E, Kozubíková-Balcarová, A, Kouba, J, Diéguez-Uribeondo, A, Petrusek   +5 more
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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.
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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
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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