Since Alexaudrowicz (1951) first described muscle receptor organs in the abdomen of Ho~m~rus ~garis and P~linurus ~ulgaris, several authors have studied the physiological and pharmacological properties of such organs, using mainly various species of crayfish as their objects of study. These investigations were based mainly upon the histological evidence presented by Alexandrowicz, concerning th...

Since Alexaudrowicz (1951) first described muscle receptor organs in the abdomen of Ho~m~rus ~garis and P~linurus ~ulgaris, several authors have studied the physiological and pharmacological properties of such organs, using mainly various species of crayfish as their objects of study. These investigations were based mainly upon the histological evidence presented by Alexandrowicz, concerning th...

Freshwater crayfish are among the most threatened animal taxa in Central Europe. Effective conservation measures for endangered native and management of invasive alien crayfishes requires knowledge about distribution, monitoring existing early detection newly established populations. eDNA has recently emerged as a promsing, highly sensitive, non-invasive tool this regard. To evaluate freshwater...

Abstract Crayfishes comprise a large and diverse group of freshwater lobster-like crustaceans. Despite being abundant in the recent, they are extremely rare fossil record. We revise putative occurrence Astacus multicavatusBell, 1863 from marine Hauterivian Speeton Clay (Speeton, United Kingdom), which was used few years ago as calibration representing AstacusFabricius, 1775 for divergence time ...

the genetic variation and population structure of narrow-clawed crayfish (astacus leptodactylus) was examined by means of polymerase chain reaction (pcr) restriction fragment length polymorphism (rflp) analysis of the cytochrome oxidase subunit i (coi) of mitochondrial dna. a total of 194 adult specimens were collected from seven sample sites including, two in the south caspian sea and one each...