Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Effects of low pH on upstream migratory behavior in land-locked sockeye salmon Oncorhynchus nerka
Autore:
Ikuta, K; Munakata, A; Aida, K; Amano, M; Kitamura, S;
Indirizzi:
Natl Res Inst Aquaculture, Nikko Branch, Nikko, Tochigi 3211661, Japan Natl Res Inst Aquaculture Nikko Tochigi Japan 3211661 higi 3211661, Japan Univ Tokyo, Dept Aquat Sci, Tokyo 1138657, Japan Univ Tokyo Tokyo Japan 1138657 kyo, Dept Aquat Sci, Tokyo 1138657, Japan Kitasato Univ, Sch Fisheries Sci, Sanriku, Iwate 0220101, Japan Kitasato Univ Sanriku Iwate Japan 0220101 , Sanriku, Iwate 0220101, Japan
Titolo Testata:
WATER AIR AND SOIL POLLUTION
fascicolo: 1-4, volume: 130, anno: 2001,
pagine: 99 - 106
SICI:
0049-6979(2001)130:1-4<99:EOLPOU>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
TROUT SALVELINUS-FONTINALIS; BROOK TROUT; FISH; ACIDIFICATION; AVOIDANCE; PRECIPITATION; GRADIENTS; EXPOSURE; ALPINUS; LAKES;
Keywords:
low pH; sockeye salmon; migratory behavior; avoidance; reproduction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Ikuta, K Natl Res Inst Aquaculture, Nikko Branch, Nikko, Tochigi 3211661, Japan Natl Res Inst Aquaculture Nikko Tochigi Japan 3211661 661, Japan
Citazione:
K. Ikuta et al., "Effects of low pH on upstream migratory behavior in land-locked sockeye salmon Oncorhynchus nerka", WATER A S P, 130(1-4), 2001, pp. 99-106

Abstract

The effects of low pH on upstream migratory behavior in land-looked sockeye salmon Oncorhynchus nerka were examined using 2-way flow-through channels. Homing mature salmon captured at the mouth of their native stream were used. When neutral (pH 6.7) hatchery water of the same origin as native stream water was allowed to flow through both channels, fish showed active swimming into both channels during a 48 hrs period. When water pH in one channelwas lowered by the addition of sulfuric acid, salmon completely ceased upstream swimming behavior into areas of pH lower than 6.0, and swam up into only neutral areas. In the lower pond of the 2-way channels, fish also avoided acidic areas even when average pH was 6.2. Since it has been reported that extremely slight changes in pH such as in the pH 6 range inhibits spawning behavior in this species, it is suggested that land-locked sockeye salmon have a sensitive ability to perceive even slight acidity, and avoid environments which may be deleterious to their offspring.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/01/20 alle ore 21:02:06