OCCURENCE OF FISH MIGRATION IN THE FISHPASS AT BULHARY ON THE DYJE RIVER

被引：0
|
作者：
Klima, O. [1 ]
Spurny, P. [1 ]
Lusk, S. [2 ]
Vitek, T. [1 ]
机构：
[1] Mendel Univ Brno, Fac Agron, Dept Zool Fisheries Hydrobiol & Apiculture, Brno 61300, Czech Republic
[2] Acad Sci Czech Republ, Inst Vertebrate Biol, Vvi, CS-60365 Brno, Czech Republic
来源：
MENDELNET 2012 | 2012年
关键词：
bypass; reproductive migration; habitat; spawning; river continuum;
D O I：
暂无
中图分类号：
F3 [农业经济];
学科分类号：
0202 ; 020205 ; 1203 ;
摘要：
The fishpass at Bulhary is a nature-like bypass channel. In the years 2008 and 2011 it was carried out a research based on 23 control electrofishings in the fishpass. A total of 6 166 individuals belonging to 34 species were found out. A reproductive migration in spring season was revealed in nase, chub, ide, vimba bream, barbel, white bream and bleak. Nase and chub find suitable conditions for spawning in the body of the fishpass. Rare species such as eel, dace, belica, gudgeon, white-finned gudgeon, schneider, zope, white-eye bream and bitterling also migrated via the fishpass. It was recorded downstream migration of fry of those species. The most abundant species was chub, ide, barbel, bleak and white bream. Aquatic invertebrates and also western tubenose goby colonized permanently fishpass as suitable habitat. The fishpass at Bulhary is passable for all species that occur in the Dyje R. under flow velocity up to 70 m(3).s(-1).
引用
收藏
页码：957 / 965
页数：9
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