Results 21 to 30 of about 391 (175)
The expansion of freshwater crayfish range to the center of Eurasia
Nauplius, 2020 Freshwater crayfish were previously absent in the territory stretching from the Caspian Sea basin to the Amur basin. That gap is now being filled, mainly due to the eastward invasion of the narrow-clawed crayfish Astacus leptodactylus, which has ...
Igor Popov
doaj +1 more source
OCCURENCE OF THE PATHOGEN PSOROSPERMIUM HAECKELI (HILGENDORF) IN ASTACID POPULATIONS IN CROATIA
Knowledge and Management of Aquatic Ecosystems, 2004 Psorospermium haeckeli is a thick-walled unicellular organism widely reported in European astacid crayfish. It is typically referred to as a “parasite” although its pathogenic impact remains unclear.
LUCIC A., MAGUIRE I., ERBEN R.
doaj +1 more source
The food of Branchiobdella Odier, 1823 (Annelida) dwelling on crayfish and the occurrence of the fish parasite Argulus Müller, 1785 (Crustacea) on the carapace of Pontastacus leptodactylus (Esch.) [PDF]
Acta Ichthyologica et Piscatoria, 1999 Gut content of Branchiobdella spp. was examined in 83-945 individuals belonging to 4 species, collected from 31 individuals of Astacus astacus (L.) and 12 individuals of Pontastacus leptodactylus (Esch.) from north-western and southern Poland.
J. Wierzbicka, P. Śmietana
doaj +3 more sources
Knowledge and Management of Aquatic Ecosystems, 2004 After the first spread of crayfish plague (aphanomycosis) at the end of the nineteenth century, the formerly abundant populations of native crayfish in Poland declined drastically.
ŠMIETANA P. +2 more
doaj +1 more source
New Ukrainian records of Branchiobdella parasita (Annelida: Clitellata: Branchiobdellida) from the Danube basin [PDF]
Scientific Annals of the Danube Delta Institute, 2013 This research deals with the first substantiated Ukrainian records of Branchiobdella parasita (Braun, 1805) from the Danube basin including the Danube Delta and a tributary of the Tisza in Transcarpathia.
KOLESNYKOVA Maria, UTEVSKY Serge
doaj +1 more source
CRAYFISH EPIBIONTS BRANCHIOBDELLA SP. AND HYSTRICOSOMA CHAPPUISI (ANNELIDA: CLITELLATA) IN GREECE
Knowledge and Management of Aquatic Ecosystems, 2007 Specimens of the three known Greek crayfish species, Astacus astacus (Linnaeus, 1758), Astacus leptodactylus Eschscholtz, 1823 and Austropotamobius torrentium (Schrank, 1803), were collected from seven localities in Greece and were examined for the ...
SUBCHEV M., KOUTRAKIS E., PERDIKARIS C.
doaj +1 more source
Knowledge and Management of Aquatic Ecosystems, 2003 Selon les enquêtes nationales menées par le Conseil supérieur de la pêche depuis 1977 en France métropolitaine, la répartition des espèces d’écrevisses montre que les espèces autochtones (Austropotamobius pallipes, Astacus astacus, Austropotamobius ...
CHANGEUX T.
doaj +1 more source
Recent changes in distribution pattern of freshwater crayfish in Croatia − threats and perspectives
Knowledge and Management of Aquatic Ecosystems, 2018 Analysis of Croatian freshwater crayfish populations, aiming to gather new distributional data and complement previous surveys (2005–2011), was performed during 2014–2016, within the frame of Natura 2000 Integration Project.
Maguire Ivana +5 more
doaj +1 more source
Molecular Characterisation of Endangered White‐Clawed Crayfish Populations in Southern Switzerland
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 3, March 2026.ABSTRACT This study investigates the phylogeography of the endangered European White‐Clawed Crayfish (WCC) Austropotamobius pallipes species complex in the main tributaries of the Po River basin in southern Switzerland and northern Italy, a diversity hotspot for this species.
Sebastian Prati +3 more
wiley +1 more source
Knowledge and Management of Aquatic Ecosystems, 2018 We studied the presence of possible Aphanomyces astaci infections in eight Turkish narrow-clawed crayfish (Astacus leptodactylus) populations by analyzing the prevalence and genotypes of the disease agent A. astaci. The qPCR analyses revealed A.
Kokko Harri +6 more
doaj +1 more source