The distribution of littoral caprellids (Crustacea: Amphipoda: Caprellidea) along the Pacific coast of continental Chile

Many littoral caprellid species have a very ample distribution, some having been reported from all over the world. The cosmopolitan distribution of many littoral caprellid species might be facilitated by the fact that they are often associated with fouling communities on floating objects, which have...

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Autores principales:	THIEL,MARTIN, GUERRA-GARCÍA,JOSÉ M., LANCELLOTTI,DOMINGO A., VÁSQUEZ,NELSON
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2003
Materias:	Crustacea Amphipoda Caprellidea Chile biogeography
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000200014
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spelling	oai:scielo:S0716-078X20030002000142003-10-09The distribution of littoral caprellids (Crustacea: Amphipoda: Caprellidea) along the Pacific coast of continental ChileTHIEL,MARTINGUERRA-GARCÍA,JOSÉ M.LANCELLOTTI,DOMINGO A.VÁSQUEZ,NELSON Crustacea Amphipoda Caprellidea Chile biogeography Many littoral caprellid species have a very ample distribution, some having been reported from all over the world. The cosmopolitan distribution of many littoral caprellid species might be facilitated by the fact that they are often associated with fouling communities on floating objects, which have a high potential of far-range dispersal. This dispersal potential may also have implications for the distribution of caprellids on local and regional scales. Herein we examined the distribution of littoral caprellid species on two spatial scales, local (tens of kilometers) and regional (hundreds of kilometers) along the Pacific coast of continental Chile. On the local scale, we studied the caprellid fauna in different habitats (intertidal boulders, subtidal algal and seagrass beds, fouling community on buoys and ropes); on the regional scale we focused only on caprellids associated with the fouling community on buoys and ropes. We found a total of six caprellid species, some of which were very abundant both on the local as well as on the regional scale. On the local scale we found a difference between the three studied habitat types with respect to the assemblage of caprellid species, some of which were found in more than one habitat. The highest species richness and abundance of caprellids was found in the fouling community associated with anchored buoys and ropes. On the regional scale we found very high numbers of caprellids in the fouling community of the northern region (n of 30°S), and decreasing abundances and species richness in the central region (30-37° S). No caprellids were found in the southern region of the study area (37-42° S). This pattern coincides with the global distribution of littoral caprellid species, which are most abundant and diverse at low latitudes but occur in low abundances and low diversity at high latitudes. Detached buoys that were found a few km off the coast harbored similar caprellid assemblages (including ovigerous females) as anchored buoys, suggesting that buoys and other floating substrata (litter, macroalgae) may facilitate dispersal of caprellids (and other epibiota) along the Pacific coast of Chile. Since artificial and natural floating substrata are also abundant at high latitudes it is inferred that the low diversity of littoral caprellids at high latitudes is not due to lack of dispersal vectors, but rather of other factorsinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.76 n.2 20032003-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000200014en10.4067/S0716-078X2003000200014
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Crustacea Amphipoda Caprellidea Chile biogeography
spellingShingle	Crustacea Amphipoda Caprellidea Chile biogeography THIEL,MARTIN GUERRA-GARCÍA,JOSÉ M. LANCELLOTTI,DOMINGO A. VÁSQUEZ,NELSON The distribution of littoral caprellids (Crustacea: Amphipoda: Caprellidea) along the Pacific coast of continental Chile
description	Many littoral caprellid species have a very ample distribution, some having been reported from all over the world. The cosmopolitan distribution of many littoral caprellid species might be facilitated by the fact that they are often associated with fouling communities on floating objects, which have a high potential of far-range dispersal. This dispersal potential may also have implications for the distribution of caprellids on local and regional scales. Herein we examined the distribution of littoral caprellid species on two spatial scales, local (tens of kilometers) and regional (hundreds of kilometers) along the Pacific coast of continental Chile. On the local scale, we studied the caprellid fauna in different habitats (intertidal boulders, subtidal algal and seagrass beds, fouling community on buoys and ropes); on the regional scale we focused only on caprellids associated with the fouling community on buoys and ropes. We found a total of six caprellid species, some of which were very abundant both on the local as well as on the regional scale. On the local scale we found a difference between the three studied habitat types with respect to the assemblage of caprellid species, some of which were found in more than one habitat. The highest species richness and abundance of caprellids was found in the fouling community associated with anchored buoys and ropes. On the regional scale we found very high numbers of caprellids in the fouling community of the northern region (n of 30°S), and decreasing abundances and species richness in the central region (30-37° S). No caprellids were found in the southern region of the study area (37-42° S). This pattern coincides with the global distribution of littoral caprellid species, which are most abundant and diverse at low latitudes but occur in low abundances and low diversity at high latitudes. Detached buoys that were found a few km off the coast harbored similar caprellid assemblages (including ovigerous females) as anchored buoys, suggesting that buoys and other floating substrata (litter, macroalgae) may facilitate dispersal of caprellids (and other epibiota) along the Pacific coast of Chile. Since artificial and natural floating substrata are also abundant at high latitudes it is inferred that the low diversity of littoral caprellids at high latitudes is not due to lack of dispersal vectors, but rather of other factors
author	THIEL,MARTIN GUERRA-GARCÍA,JOSÉ M. LANCELLOTTI,DOMINGO A. VÁSQUEZ,NELSON
author_facet	THIEL,MARTIN GUERRA-GARCÍA,JOSÉ M. LANCELLOTTI,DOMINGO A. VÁSQUEZ,NELSON
author_sort	THIEL,MARTIN
title	The distribution of littoral caprellids (Crustacea: Amphipoda: Caprellidea) along the Pacific coast of continental Chile
title_short	The distribution of littoral caprellids (Crustacea: Amphipoda: Caprellidea) along the Pacific coast of continental Chile
title_full	The distribution of littoral caprellids (Crustacea: Amphipoda: Caprellidea) along the Pacific coast of continental Chile
title_fullStr	The distribution of littoral caprellids (Crustacea: Amphipoda: Caprellidea) along the Pacific coast of continental Chile
title_full_unstemmed	The distribution of littoral caprellids (Crustacea: Amphipoda: Caprellidea) along the Pacific coast of continental Chile
title_sort	distribution of littoral caprellids (crustacea: amphipoda: caprellidea) along the pacific coast of continental chile
publisher	Sociedad de Biología de Chile
publishDate	2003
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000200014
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The distribution of littoral caprellids (Crustacea: Amphipoda: Caprellidea) along the Pacific coast of continental Chile

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