Movements of barbel, Barbus barbus (Pisces: Cyprinidae)

Title:

Movements of barbel, Barbus barbus (Pisces: Cyprinidae)

Creator:

Peňáz, Milan, Baruš, Vlastimil, Prokeš, Miroslav, and Homolka, Miloslav

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:01accd5c-58a9-3174-3fb4-5cfa6d6a5f24
uuid:01accd5c-58a9-3174-3fb4-5cfa6d6a5f24

Subject:

tagging, resident and mobile fish, territoriality, metapopulation, and riffle-pool development

Type:

article and TEXT

Description:

Altogether 701 adult barbel, Barbus barbus were captured by electrofishing and individually tagged to study their local displacement and movements in a stretch of the River Jihlava (Czech Republic). A total of 149 fish were recaptured and 105 of them (70.47 %) were considered as ”resident” because they were always recaptured in the same, relatively restricted (250 - 780 m) stream section, which always contained a pool and was demarcated naturally by riffles on both edges. The remaining 44 recaptured specimens (29.53 %) belonged to the “mobile” part of population, their movements encompassing two (or exceptionally more) adjacent stream sections and at maximum a distance of 1680 m downstream or 2020 m upstream. The proportion of mobile barbel, relatively low in smaller and middle size classes, increased in the largest size classes (451–550 mm of SL). A rather limited extent of movements also suggests a relatively small area of home range in the studied stretch, which nevertheless provides satisfactory resources and favourable conditions required by barbel over their entire life cycle. The extent of movements and corresponding proportion of mobile fish appear to be increasing with diminishing habitat patchiness. In the stretch of River Jihlava studied, with a rich patchy heterogenous habitat and well developed riffle-pool-raceway structure, each section (pool) can be considered as a more or less isolated spatial unit containing its own, and in a certain degree, isolated component of a metapopulation.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/

Source:

Folia zoologica | 2002 Volume:51 | Number:1

Harvested from:

CDK

Metadata only:

false