Mechanotransduction or mechanosensitivity is found in almost every cell in all organisms from bacteria to vertebrates. Mechanosensitivity covers a wide spectrum of functions from osmosensing, cell attachment, classical sensory mechanisms like tactile senses in the skin, detection of sound in hair cells of the hearing apparatus, proprioceptive functions like recording of muscle length and tensio...

Two morphotypes of the crayfish parasite Psorospermium haeckeli were isolated from 2 crayfish species of different geographical origin. The oval-shaped sporocysts were obtained from the epidermal and connective tissue beneath the carapace of the noble crayfish Astacus astacus from Sweden and Finland. Elongated spores were isolated from the abdominal muscle tissue of the red swamp crayfish Proca...

For 150 years the crayfish plague disease agent Aphanomyces astaci has been cause of mass mortalities among native European populations. However, recently several studies have highlighted great variability A. virulence and resistance toward disease. The main aim this study was to compare response two species, noble ( Astacus astacus ) invasive alien marbled Procambarus virginalis ), an challeng...

The population of noble crayfish ( Astacus astacus ) was researched in quarries an old brick plant Molodechno district Minsk region. Rare disappearing found 10 closed quarries. presence that are not connected with watercourses indicates these populations were created by man. the factory is characterized a high number. average catch eel traps 1.31 ± 0.77 individuals/trap/day. Crayfish first and ...

The freshwater ecosystems in the Republic of North Macedonia are considered as biodiversity hotspot on European level since they provide diverse habitats that correspond with complex ecological preferences many species require. This specially applies to crustaceans that, unfortunately, have never been focus a continuous research. In R. Macedonia, usually inhabit exposed negative anthropogenic i...

Noble crayfish Astacus astacus is threatened in Europe due to invasive crayfish carrying the crayfish plague agent Aphanomyces astaci. Norway is among the last countries in which the introduction of non-indigenous crayfish has been limited through strict legislation practices. However, North American signal crayfish Pacifastacus leniusculus were recently discovered in a water-course that has be...

Aphanomyces astaci, a specialised parasite of North American freshwater crayfish, is the disease agent of crayfish plague that is lethal to European freshwater crayfish. The life cycle of A. astaci has been inferred from experimental laboratory studies, but less is known about its natural sustainability and ecology. To address such questions, tools for monitoring of A. astaci directly in aquati...

The exchange (release resp. uptake) of K+, Rb+, and Na+ ions in the isolated retina of the crayfish Astacus leptodactylus with the surrounding medium was measured using flame photometry and radioisotopic techniques. 1. The net release of K+ into a Na+ and K+ free, choline containing medium, as measured by means of flame photometry, is increased by illumination. 2. The release of 86Rb+, used as ...

Here we present the development and first validation of a TaqMan minor groove binder (MGB) real-time polymerase chain reaction (RT-PCR) method for quantitative and highly specific detection of Aphanomyces astaci, the causative agent of crayfish plague. The assay specificity was experimentally assessed by testing against DNA representative of closely related oomycetes, and theoretically assessed...