Results 121 to 130 of about 398 (157)
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The secondary zoospore of Aphanomyces astaci and A. laevis (Oomycetes, Saprolegniales)
Nordic Journal of Botany, 1984The 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 +3 more
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Wound reactions and Aphanomyces astaci growth in crayfish cuticle
Journal of Invertebrate Pathology, 1980Abstract 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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On the Physiology of Zoospore Production in Aphanomyces astaci
Physiologia Plantarum, 1969Abstract 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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The North American crayfish Procambarus clarkii is the carrier of the oomycete Aphanomyces astaci in Italy [PDF]
Biological Invasions, 2010 Aphanomyces astaci (Saprolegniales, Oomycetes) is classified among the 100 world’s worst invasive species. This species is endemic to North America and has been introduced into Europe by imports of their hosts, the North American crayfish species. As a consequence, extensive mass mortalities involved several populations of the European crayfish.
Maria P Martin +1 more
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Physiological Variation in Strains of Aphanomyces astaci
Physiologia Plantarum, 1971AbstractPhysiological 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, 2014Aphanomyces 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 +5 more
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Aphanomyces astaci genotypes involved in recent crayfish plague outbreaks in central Italy
Diseases of Aquatic Organisms, 2018The oomycete Aphanomyces astaci is the causative agent of crayfish plague in native European freshwater crayfish. Molecular analyses showed that several distinct genotype groups of this pathogen, apparently associated with different original host taxa, are present in Europe.
Adam Petrusek +2 more
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Hosts and transmission of the crayfish plague pathogen Aphanomyces astaci: a review
Journal of Fish Diseases, 2016AbstractThe 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 +3 more
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Transactions of the British Mycological Society, 1984
Saprolegnia parasitica and Aphanomyces astaci are important Oomycete parasites of aquatic animals. The sensitivity of these two fungi to a range of fungicides was investigated and A. astaci was found to be significantly more susceptible to systemic anti-phycomycete agents.
D.J. Alderman, Jane L. Polglase
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Saprolegnia parasitica and Aphanomyces astaci are important Oomycete parasites of aquatic animals. The sensitivity of these two fungi to a range of fungicides was investigated and A. astaci was found to be significantly more susceptible to systemic anti-phycomycete agents.
D.J. Alderman, Jane L. Polglase
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Laboratory investigations of the pathogenicity of Aphanomyces astaci for Irish freshwater crayfish
Hydrobiologia, 1990Crayfish 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
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