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Titolo:
Electrosensory avoidance of metal obstacles by the paddlefish
Autore:
Gurgens, C; Russell, DF; Wilkens, LA;
Indirizzi:
Univ Missouri, Dept Biol, Ctr Neurodynam, St Louis, MO 63121 USA Univ Missouri St Louis MO USA 63121 tr Neurodynam, St Louis, MO 63121 USA
Titolo Testata:
JOURNAL OF FISH BIOLOGY
fascicolo: 2, volume: 57, anno: 2000,
pagine: 277 - 290
SICI:
0022-1112(200008)57:2<277:EAOMOB>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANOPTICHTHYS-JORDANI CHARACIDAE; FISHES;
Keywords:
paddlefish; electrosense; avoidance behaviour; ampullae of Lorenzini; dams;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Wilkens, LA Univ Missouri, Dept Biol, Ctr Neurodynam, 8001 Nat Bridge Rd, St Louis, MO63121 USA Univ Missouri 8001 Nat Bridge Rd St Louis MO USA 63121 121 USA
Citazione:
C. Gurgens et al., "Electrosensory avoidance of metal obstacles by the paddlefish", J FISH BIOL, 57(2), 2000, pp. 277-290

Abstract

Paddlefish Polyodon spathula detected and avoided obstacles with an exposed metallic surface but not plastic objects. An aluminium obstacle was avoided from significantly greater minimum approach distances than were any of the other obstacles. No significant difference was detected between the plastic and plastic-covered aluminium obstacles, while control values were significantly less than for all obstacle types. Avoidance distances measured atdifferent water conductivities were not significantly different. Fish collided frequently with the plastic and plastic-covered aluminium obstacles, and with the control site, suggesting that these obstacles were not detectedby the electrosensory apparatus. The aluminium obstacle was avoided successfully in all test runs. The unambiguous avoidance behaviour elicited by the aluminium obstacle suggests that large metallic structures, such as locksand darns, have the potential to interfere with paddlefish migrations.(C) 2000 The Fisheries Society of the British Isles.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/08/20 alle ore 08:02:14