Abundance, distribution and feeding patterns of a temperate reef fish in subtidal environments of the Chilean coast: the importance of understory algal turf

Cheilodactylus variegatus is an abundant carnivorous demersal reef fish that lives in the shallow subtidal of the north-central Chilean coast. Characteristically, these environments are dominated by kelp forests of Lessonia trabeculata. This species preys on a great variety of benthic invertebrates,...

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Autores principales:	PALMA,ÁLVARO T., OJEDA,F. PATRICIO
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2002
Materias:	Cheilodactylidae shallow subtidal understory macroalgae carnivorous fish amphipods distribution abundance Chile
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000100018
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spelling	oai:scielo:S0716-078X20020001000182002-06-14Abundance, distribution and feeding patterns of a temperate reef fish in subtidal environments of the Chilean coast: the importance of understory algal turfPALMA,ÁLVARO T.OJEDA,F. PATRICIO Cheilodactylidae shallow subtidal understory macroalgae carnivorous fish amphipods distribution abundance Chile Cheilodactylus variegatus is an abundant carnivorous demersal reef fish that lives in the shallow subtidal of the north-central Chilean coast. Characteristically, these environments are dominated by kelp forests of Lessonia trabeculata. This species preys on a great variety of benthic invertebrates, and shows particularly high consumption rates on amphipod crustaceans. In our study, two widely separated populations of C. variegatus were considered (central and northern Chile). Individuals that form part of these populations show considerable differences in their distribution, abundance and trophic behavior. In the northern zone, the species is abundant and both juveniles and adults are distributed along the whole bathymetric gradient. This contrasts with populations found in central Chile, which are more sparse and lack juveniles. The distribution and abundance patterns appear to be influenced mainly by the great abundance of diverse understory macroalgae in the northern subtidal, which harbors a large number of invertebrates, especially amphipods. In contrast, the understory algal abundance of the central zone is much lower, and does not show a direct relationship with the lesser abundance of amphipods. In general, C. variegatus maintains a high consumption rate on amphipods throughout its ontogeny but it includes several other prey items in later ontogenetic stages. The different understory algal assemblages, and their associated fauna, are likely to be the main factors influencing the patterns of abundance and distribution observed between these two geographically distinct fish populationsinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.75 n.1 20022002-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000100018en10.4067/S0716-078X2002000100018
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Cheilodactylidae shallow subtidal understory macroalgae carnivorous fish amphipods distribution abundance Chile
spellingShingle	Cheilodactylidae shallow subtidal understory macroalgae carnivorous fish amphipods distribution abundance Chile PALMA,ÁLVARO T. OJEDA,F. PATRICIO Abundance, distribution and feeding patterns of a temperate reef fish in subtidal environments of the Chilean coast: the importance of understory algal turf
description	Cheilodactylus variegatus is an abundant carnivorous demersal reef fish that lives in the shallow subtidal of the north-central Chilean coast. Characteristically, these environments are dominated by kelp forests of Lessonia trabeculata. This species preys on a great variety of benthic invertebrates, and shows particularly high consumption rates on amphipod crustaceans. In our study, two widely separated populations of C. variegatus were considered (central and northern Chile). Individuals that form part of these populations show considerable differences in their distribution, abundance and trophic behavior. In the northern zone, the species is abundant and both juveniles and adults are distributed along the whole bathymetric gradient. This contrasts with populations found in central Chile, which are more sparse and lack juveniles. The distribution and abundance patterns appear to be influenced mainly by the great abundance of diverse understory macroalgae in the northern subtidal, which harbors a large number of invertebrates, especially amphipods. In contrast, the understory algal abundance of the central zone is much lower, and does not show a direct relationship with the lesser abundance of amphipods. In general, C. variegatus maintains a high consumption rate on amphipods throughout its ontogeny but it includes several other prey items in later ontogenetic stages. The different understory algal assemblages, and their associated fauna, are likely to be the main factors influencing the patterns of abundance and distribution observed between these two geographically distinct fish populations
author	PALMA,ÁLVARO T. OJEDA,F. PATRICIO
author_facet	PALMA,ÁLVARO T. OJEDA,F. PATRICIO
author_sort	PALMA,ÁLVARO T.
title	Abundance, distribution and feeding patterns of a temperate reef fish in subtidal environments of the Chilean coast: the importance of understory algal turf
title_short	Abundance, distribution and feeding patterns of a temperate reef fish in subtidal environments of the Chilean coast: the importance of understory algal turf
title_full	Abundance, distribution and feeding patterns of a temperate reef fish in subtidal environments of the Chilean coast: the importance of understory algal turf
title_fullStr	Abundance, distribution and feeding patterns of a temperate reef fish in subtidal environments of the Chilean coast: the importance of understory algal turf
title_full_unstemmed	Abundance, distribution and feeding patterns of a temperate reef fish in subtidal environments of the Chilean coast: the importance of understory algal turf
title_sort	abundance, distribution and feeding patterns of a temperate reef fish in subtidal environments of the chilean coast: the importance of understory algal turf
publisher	Sociedad de Biología de Chile
publishDate	2002
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000100018
work_keys_str_mv	AT palmaalvarot abundancedistributionandfeedingpatternsofatemperatereeffishinsubtidalenvironmentsofthechileancoasttheimportanceofunderstoryalgalturf AT ojedafpatricio abundancedistributionandfeedingpatternsofatemperatereeffishinsubtidalenvironmentsofthechileancoasttheimportanceofunderstoryalgalturf
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Abundance, distribution and feeding patterns of a temperate reef fish in subtidal environments of the Chilean coast: the importance of understory algal turf

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