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Titolo:
STIMULUS DISCRIMINATION AND WAVE SOURCE LOCALIZATION IN FISHING SPIDERS (DOLOMEDES TRITON AND D-OKEFINOKENSIS)
Autore:
BLECKMANN H; BORCHARDT M; HORN P; GORNER P;
Indirizzi:
TH DARMSTADT,INST ZOOL,SCHNITTSPAHNSTR 3 D-64287 DARMSTADT GERMANY UNIV BIELEFELD,FAK BIOL D-33501 BIELEFELD GERMANY
Titolo Testata:
Journal of comparative physiology. A, Sensory, neural, and behavioral physiology
fascicolo: 3, volume: 174, anno: 1994,
pagine: 305 - 316
SICI:
0340-7594(1994)174:3<305:SDAWSL>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
SWIMMER NOTONECTA-GLAUCA; SURFACE-FEEDING FISH; BEHAVIOR; PREY; ORIENTATION; PISAURIDAE; SIGNALS; ARANEAE; LEGS;
Keywords:
ORIENTATION; DOLOMEDES; WATER SURFACE; MECHANORECEPTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
H. Bleckmann et al., "STIMULUS DISCRIMINATION AND WAVE SOURCE LOCALIZATION IN FISHING SPIDERS (DOLOMEDES TRITON AND D-OKEFINOKENSIS)", Journal of comparative physiology. A, Sensory, neural, and behavioral physiology, 174(3), 1994, pp. 305-316

Abstract

We have studied the behavioral responses of fishing spiders (Dolomedes triton and Dolomedes okefinokensis) to water surface wave stimuli. D. okefinokensis responded to click-like wave stimuli (Fig. 3C) in lessthan 15% of the cases. Responsiveness did not increase if up to 20 clicks were elicited in quick succession from the same spot (Fig. 5). Iflonger lasting concentric stimuli were offered, the spiders determined the direction (Fig. 6) and the distance (Fig. 8) to the wave source. This was true for monofrequency stimuli and for narrow-band and broadband noise stimuli. If concentric multifrequency surface waves were offered, even a fivefold decrease in stimulus amplitude did not significantly change the mean running distance of D. triton. However, if multifrequency wave stimuli with a flat wave front were presented, the spiders (D. triton) no longer determined the source distance precisely (Figs. 11, 12). Our results indicate that fishing spiders of the genus Dolomedes mainly use the curvature of a concentric wave stimulus for distance determination.

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Documento generato il 26/09/20 alle ore 05:45:16