Results 21 to 30 of about 1,091 (209)

DISTRIBUTION OF CRAYFISH IN SALZBURG, AUSTRIA

open access: yesKnowledge and Management of Aquatic Ecosystems, 2005
Mapping of crayfish populations in the province of Salzburg was carried out in the years 2002 and 2003. Five crayfish species were found, two of them native: Astacus astacus and Austropotamobius torrentium, and three foreign: Astacus leptodactylus ...
PATZNER R. A.   +4 more
doaj   +1 more source

NATIVE AND ALIEN DECAPODA SPECIES IN HUNGARY:DISTRIBUTION, STATUS, CONSERVATION IMPORTANCE

open access: yesKnowledge and Management of Aquatic Ecosystems, 2005
Three native (Astacus astacus, Astacus leptodactylus, Austropotamobius torrentium) and three alien (Orconectes limosus, Pacifastacus leniusculus, Eriocheir sinensis) Decapoda species have been found in Hungary so far. A.
PUKY M., REYNOLDS J. D., SCHÁD P.
doaj   +1 more source

OCCURRENCE OF NATIVE AND INTRODUCED CRAYFISH IN NORTHEASTERN GERMANY AND NORTHWESTERN POLAND.

open access: yesKnowledge and Management of Aquatic Ecosystems, 2001
On the basis of monitoring undertaken in 300 lakes since 1994, the recent stocking situation for freshwater crayfish in northeastern Germany (Uckermark) and northwestern Poland (Szczecin area) is described. The two native species Astacus astacus (L.) and
SCHULZ R., SMIETANA P.
doaj   +1 more source

DISTRIBUTION, RECENT MORTALITIES AND CONSERVATION MEASURES OF CRAYFISH IN HELLENIC FRESH WATERS

open access: yesKnowledge and Management of Aquatic Ecosystems, 2007
Freshwater crayfish are found in 20 out of 53 Prefectures of Greece (38%) and they form isolated populations in relatively pristine water bodies. Three indigenous crayfish species (ICS) occur in Greek waters: Astacus astacus, Astacus leptodactylus and ...
KOUTRAKIS E.   +4 more
doaj   +1 more source

CONFIRMATION OF OCCURRENCE OF THE NARROW-CLAWED CRAYFISH ? STACUS LEPTODACTYLUS ESCHSCHOLTZ, 1823 IN THE RIVER EVROS IN GREECE

open access: yesKnowledge and Management of Aquatic Ecosystems, 2007
The narrow-clawed crayfish Astacus leptodactylus Eschscholtz, 1823, is widely distributed in eastern European and western Asian countries. However, species presence in Greece was documented only by limited museum conserved specimens dating back to 1893 ...
PERDIKARIS C.   +3 more
doaj   +1 more source

The expansion of freshwater crayfish range to the center of Eurasia

open access: yesNauplius, 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

open access: yesKnowledge 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]

open access: yesActa 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

REVIEW OF THE NATIONAL RESTOCKING PROGRAMME “ACTIVE PROTECTION OF NATIVE CRAYFISH IN POLAND” 1999-2001

open access: yesKnowledge 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]

open access: yesScientific 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

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