Experimental displacement trials of the red sea urchin Strongylocentrotus franciscanus (Aggassiz, 1863) (Echinodermata: Echinoidea) at different current velocities

ABSTRACT Displacement of marine animals is affected by diverse environmental factors, including hydrodynamics performance. We evaluated the effect of current velocity on the displacement of the sea urchin Strongylocentrotus franciscanus in an experimental flume, in both light and dark conditions. We...

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Autores principales:	Guisado A,Chita, Bückle R,Luis F, Hernández R,Mónica, Díaz-Guisado,Daniela
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2009
Materias:	Current speed day and night movement experimental flume
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000100008
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spelling	oai:scielo:S0718-195720090001000082009-08-03Experimental displacement trials of the red sea urchin Strongylocentrotus franciscanus (Aggassiz, 1863) (Echinodermata: Echinoidea) at different current velocitiesGuisado A,ChitaBückle R,Luis FHernández R,MónicaDíaz-Guisado,Daniela Current speed day and night movement experimental flume ABSTRACT Displacement of marine animals is affected by diverse environmental factors, including hydrodynamics performance. We evaluated the effect of current velocity on the displacement of the sea urchin Strongylocentrotus franciscanus in an experimental flume, in both light and dark conditions. We observed that movement of S. franciscanus was directly proportional to the current speed. Our results differ from previous studies in the amount and the direction of displacement of other strongylocentrotids, because sea urchins displacements were similar in the current direction and counter-current irrespective of current velocity and our results showed displacements of circa 7 m per day, smaller to that reported for experiments in the same urchin species in British Columbia. The differences may be due to the absence of predators or food, or the trials in day and night conditions. Day and night differences in the displacement of S. franciscanus were not observed.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.44 n.1 20092009-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000100008en10.4067/S0718-19572009000100008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Current speed day and night movement experimental flume
spellingShingle	Current speed day and night movement experimental flume Guisado A,Chita Bückle R,Luis F Hernández R,Mónica Díaz-Guisado,Daniela Experimental displacement trials of the red sea urchin Strongylocentrotus franciscanus (Aggassiz, 1863) (Echinodermata: Echinoidea) at different current velocities
description	ABSTRACT Displacement of marine animals is affected by diverse environmental factors, including hydrodynamics performance. We evaluated the effect of current velocity on the displacement of the sea urchin Strongylocentrotus franciscanus in an experimental flume, in both light and dark conditions. We observed that movement of S. franciscanus was directly proportional to the current speed. Our results differ from previous studies in the amount and the direction of displacement of other strongylocentrotids, because sea urchins displacements were similar in the current direction and counter-current irrespective of current velocity and our results showed displacements of circa 7 m per day, smaller to that reported for experiments in the same urchin species in British Columbia. The differences may be due to the absence of predators or food, or the trials in day and night conditions. Day and night differences in the displacement of S. franciscanus were not observed.
author	Guisado A,Chita Bückle R,Luis F Hernández R,Mónica Díaz-Guisado,Daniela
author_facet	Guisado A,Chita Bückle R,Luis F Hernández R,Mónica Díaz-Guisado,Daniela
author_sort	Guisado A,Chita
title	Experimental displacement trials of the red sea urchin Strongylocentrotus franciscanus (Aggassiz, 1863) (Echinodermata: Echinoidea) at different current velocities
title_short	Experimental displacement trials of the red sea urchin Strongylocentrotus franciscanus (Aggassiz, 1863) (Echinodermata: Echinoidea) at different current velocities
title_full	Experimental displacement trials of the red sea urchin Strongylocentrotus franciscanus (Aggassiz, 1863) (Echinodermata: Echinoidea) at different current velocities
title_fullStr	Experimental displacement trials of the red sea urchin Strongylocentrotus franciscanus (Aggassiz, 1863) (Echinodermata: Echinoidea) at different current velocities
title_full_unstemmed	Experimental displacement trials of the red sea urchin Strongylocentrotus franciscanus (Aggassiz, 1863) (Echinodermata: Echinoidea) at different current velocities
title_sort	experimental displacement trials of the red sea urchin strongylocentrotus franciscanus (aggassiz, 1863) (echinodermata: echinoidea) at different current velocities
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572009000100008
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Experimental displacement trials of the red sea urchin Strongylocentrotus franciscanus (Aggassiz, 1863) (Echinodermata: Echinoidea) at different current velocities

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