Escape responses in juvenile Atlantic cod Gadus morhua L.: the effects of turbidity and predator speed
We examined the effect of turbidity (0.5–14 beam attenuation m–1) and predator attack speed (150 and 296 cm s–1) on escape responses of juvenile cod Gadus morhua in the laboratory. We triggered escape responses using a predator model and measured escape timing, direction and locomotor performance. W...
Published in: | Journal of Experimental Biology |
---|---|
Main Authors: | , , , |
Format: | Text |
Language: | English |
Published: |
Company of Biologists
2006
|
Subjects: | |
Online Access: | http://jeb.biologists.org/cgi/content/short/209/20/4174 https://doi.org/10.1242/jeb.02489 |
id |
fthighwire:oai:open-archive.highwire.org:jexbio:209/20/4174 |
---|---|
record_format |
openpolar |
spelling |
fthighwire:oai:open-archive.highwire.org:jexbio:209/20/4174 2023-05-15T15:27:29+02:00 Escape responses in juvenile Atlantic cod Gadus morhua L.: the effects of turbidity and predator speed Meager, Justin J. Domenici, Paolo Shingles, Alex Utne-Palm, Anne Christine 2006-10-15 00:00:00.0 text/html http://jeb.biologists.org/cgi/content/short/209/20/4174 https://doi.org/10.1242/jeb.02489 en eng Company of Biologists http://jeb.biologists.org/cgi/content/short/209/20/4174 http://dx.doi.org/10.1242/jeb.02489 Copyright (C) 2006, Company of Biologists Research Article TEXT 2006 fthighwire https://doi.org/10.1242/jeb.02489 2013-05-26T21:53:55Z We examined the effect of turbidity (0.5–14 beam attenuation m–1) and predator attack speed (150 and 296 cm s–1) on escape responses of juvenile cod Gadus morhua in the laboratory. We triggered escape responses using a predator model and measured escape timing, direction and locomotor performance. We also measured responsiveness and estimated the likelihood of fish escaping the `predator attack' (putative escape success, PES). Turbidity affected both PES and the type of escape response used by the fish, but these effects depended on predator speed. PES for the fast predator attack declined from 73% in clear water to 21% in highly turbid water, due to decreased responsiveness and poorly timed escapes. Intermediate turbidity enhanced PES and responsiveness to the slow predator attack. Locomotor performance was reduced by turbidity, whereas predator speed had the opposite effect. Our results suggest that both predator attack speed and turbidity have important roles in determining the vulnerability of fish attacked by piscivorous predators. Text atlantic cod Gadus morhua HighWire Press (Stanford University) Journal of Experimental Biology 209 20 4174 4184 |
institution |
Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Research Article |
spellingShingle |
Research Article Meager, Justin J. Domenici, Paolo Shingles, Alex Utne-Palm, Anne Christine Escape responses in juvenile Atlantic cod Gadus morhua L.: the effects of turbidity and predator speed |
topic_facet |
Research Article |
description |
We examined the effect of turbidity (0.5–14 beam attenuation m–1) and predator attack speed (150 and 296 cm s–1) on escape responses of juvenile cod Gadus morhua in the laboratory. We triggered escape responses using a predator model and measured escape timing, direction and locomotor performance. We also measured responsiveness and estimated the likelihood of fish escaping the `predator attack' (putative escape success, PES). Turbidity affected both PES and the type of escape response used by the fish, but these effects depended on predator speed. PES for the fast predator attack declined from 73% in clear water to 21% in highly turbid water, due to decreased responsiveness and poorly timed escapes. Intermediate turbidity enhanced PES and responsiveness to the slow predator attack. Locomotor performance was reduced by turbidity, whereas predator speed had the opposite effect. Our results suggest that both predator attack speed and turbidity have important roles in determining the vulnerability of fish attacked by piscivorous predators. |
format |
Text |
author |
Meager, Justin J. Domenici, Paolo Shingles, Alex Utne-Palm, Anne Christine |
author_facet |
Meager, Justin J. Domenici, Paolo Shingles, Alex Utne-Palm, Anne Christine |
author_sort |
Meager, Justin J. |
title |
Escape responses in juvenile Atlantic cod Gadus morhua L.: the effects of turbidity and predator speed |
title_short |
Escape responses in juvenile Atlantic cod Gadus morhua L.: the effects of turbidity and predator speed |
title_full |
Escape responses in juvenile Atlantic cod Gadus morhua L.: the effects of turbidity and predator speed |
title_fullStr |
Escape responses in juvenile Atlantic cod Gadus morhua L.: the effects of turbidity and predator speed |
title_full_unstemmed |
Escape responses in juvenile Atlantic cod Gadus morhua L.: the effects of turbidity and predator speed |
title_sort |
escape responses in juvenile atlantic cod gadus morhua l.: the effects of turbidity and predator speed |
publisher |
Company of Biologists |
publishDate |
2006 |
url |
http://jeb.biologists.org/cgi/content/short/209/20/4174 https://doi.org/10.1242/jeb.02489 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
http://jeb.biologists.org/cgi/content/short/209/20/4174 http://dx.doi.org/10.1242/jeb.02489 |
op_rights |
Copyright (C) 2006, Company of Biologists |
op_doi |
https://doi.org/10.1242/jeb.02489 |
container_title |
Journal of Experimental Biology |
container_volume |
209 |
container_issue |
20 |
container_start_page |
4174 |
op_container_end_page |
4184 |
_version_ |
1766357921227079680 |