. "373" . "Koz\u00E1k, Pavel" . . . "7"^^ . "P(GA206/03/0532), Z(MSM 126100003)" . . . . "RIV/60076658:12610/04:00005763" . "367-373" . "Migra\u010Dn\u00ED schopnost raka Orconectes limosus ryb\u00EDm p\u0159echodem a jeho v\u00FDskyt v \u010Cesk\u00E9 republice"@cs . . . . . "The occurrence of the spiny-cheek crayfish in the Czech Republic was first reported in the 1980\u00B4s in the Elbe River and is a result of its upstream migration from Germany. This study confirms that this species occurs in many other localities across the Czech Republic. Its migration ability was experimentally studied at a thirty-chambers fishpass located at a hydro-electric power station in the Elbe River. Group-marked crayfish were placed into 3 selected chambers. Their up- and downstream movement was then registered for 30 min after crayfish stocking. We found that a large portion of the experimental crayfish was passively carried along the stream and was caught in the lowest chamber. The movement of crayfish against the water current towards the higher-positioned chambers was not recorded. However, crayfish showed to have a high ability to hold their position in a strong water flow. Overall, 56.7#9.43%, 6.7#9.43% and 3.3#4.71% of crayfish remained in the chamber of insertion and 23.3#4.71%, 30.0#1" . "0767-2861" . "12610" . "372" . "Migration ability of Orconectes limosus through a fishpass and notes on its occurrence in the Czech Republic"@en . "The occurrence of the spiny-cheek crayfish in the Czech Republic was first reported in the 1980\u00B4s in the Elbe River and is a result of its upstream migration from Germany. This study confirms that this species occurs in many other localities across the Czech Republic. Its migration ability was experimentally studied at a thirty-chambers fishpass located at a hydro-electric power station in the Elbe River. Group-marked crayfish were placed into 3 selected chambers. Their up- and downstream movement was then registered for 30 min after crayfish stocking. We found that a large portion of the experimental crayfish was passively carried along the stream and was caught in the lowest chamber. The movement of crayfish against the water current towards the higher-positioned chambers was not recorded. However, crayfish showed to have a high ability to hold their position in a strong water flow. Overall, 56.7#9.43%, 6.7#9.43% and 3.3#4.71% of crayfish remained in the chamber of insertion and 23.3#4.71%, 30.0#1"@en . . "[0462FCD91DD7]" . . "Migration ability of Orconectes limosus through a fishpass and notes on its occurrence in the Czech Republic" . . "FR - Francouzsk\u00E1 republika" . "2"^^ . "Bull. Fr. de la Peche et de la Pisciculture" . . . . . . "Migration ability of Orconectes limosus through a fishpass and notes on its occurrence in the Czech Republic"@en . "3"^^ . "crayfish;Orconectes limosus;v\u00FDskyt;\u010Cesk\u00E1 republika;aktivita;migrace;ryb\u00ED p\u0159echod"@en . "Policar, Tom\u00E1\u0161" . . "Migration ability of Orconectes limosus through a fishpass and notes on its occurrence in the Czech Republic" . . "\u010Euris, Z." . "573593" . . "V\u00FDskyt raka pruhovan\u00E9ho byl v \u010Cesk\u00E9 republice poprv\u00E9 zaznamen\u00E1n v 80. letech 20. stolet\u00ED v \u0159ece Labi kam se dostal migrac\u00ED proti proudu ze SRN. Jeho hojn\u00FD v\u00FDskyt byl potvrzen i na dal\u0161\u00EDch lokalit\u00E1ch \u010CR. Jeho migra\u010Dn\u00ED schopnost byla experiment\u00E1ln\u011B studov\u00E1na 30-komorov\u00E9m ryb\u00EDm p\u0159echodu ve vodn\u00ED elektr\u00E1rn\u011B na \u0159ece Labi. Skupinov\u011B ozna\u010Den\u00ED raci byli nasazov\u00E1ni do 3 vybran\u00FDch komor. Byl zji\u0161\u0165ov\u00E1n jejich pohyb po a proti proudu po 30 min po vysazen\u00ED. Bylo zji\u0161t\u011Bno, \u017Ee v\u011Bt\u0161ina z vysazen\u00FDch rak\u016F se nechala pasivn\u011B un\u00E1\u0161et proudem vody a byla slovena a\u017E nejspodn\u011Bj\u0161\u00ED komo\u0159e. Z\u00E1rove\u0148 byla ale zji\u0161t\u011Bna velk\u00E1 schopnost rak\u016F udr\u017Eet se ve velk\u00E9m proudu vody na stejn\u00E9m m\u00EDst\u011B. V \u017E\u00E1dn\u00E9m p\u0159\u00EDpad\u011B nebyl zaznamen\u00E1n pohyb rak\u016F proti proudu vody do v\u00FD\u0161e polo\u017Een\u00FDch komor. V pr\u016Fm\u011Bru 56.7#9.43%, 6.7#9.43% a 3.3#4.71% rak\u016F z\u016Fstalo v komo\u0159e kam byli vysazeni a 23.3#4.71%, 30.0#14.14% a 26.7#17.00% rak\u016F migrovalo do n\u00ED\u017Ee polo\u017Een\u00FDch komor."@cs . "RIV/60076658:12610/04:00005763!RIV/2005/GA0/126105/N" . . "Migra\u010Dn\u00ED schopnost raka Orconectes limosus ryb\u00EDm p\u0159echodem a jeho v\u00FDskyt v \u010Cesk\u00E9 republice"@cs .