Morphometric variability in sandy beach crustaceans of Isla Grande de Chiloé, Southern Chile

The macroinfauna of exposed sandy beaches along the Chilean coast is dominated by crustaceans, which show an across-shore zonation; the talitrid amphipod Orchestoidea tuberculata as the dominant taxon in the upper levels, the cirolanid isopod Excirolana hirsuticauda is dominant in the mid-intertidal...

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Autores principales:	Contreras,Heraldo, Duarte,Cristian, Jaramillo,Eduardo, Fuentes,Norka
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2013
Materias:	Morphometric variability macroinfauna sandy beach
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000300007
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spelling	oai:scielo:S0718-195720130003000072014-04-08Morphometric variability in sandy beach crustaceans of Isla Grande de Chiloé, Southern ChileContreras,HeraldoDuarte,CristianJaramillo,EduardoFuentes,Norka Morphometric variability macroinfauna sandy beach The macroinfauna of exposed sandy beaches along the Chilean coast is dominated by crustaceans, which show an across-shore zonation; the talitrid amphipod Orchestoidea tuberculata as the dominant taxon in the upper levels, the cirolanid isopod Excirolana hirsuticauda is dominant in the mid-intertidal, and the anomuran crab Emerita analoga is common in the low levels. This study analyses samples collected during the spring of 2001 and 7 morphological characters were measured on 30 adults of each species: body length, body height, body width, antennae and uropodal exopod lengths. The study sites were located near 42°S, an area where various beach types (i.e., reflective, intermediate and dissipative) occur along the northern coasts of the Chilean archipelagos. The morphometric variability of O. tuberculata, E. hirsuticauda and E. analoga was analyzed using cluster and principal component analysis. The results of this study showed that independently of beach type, individuals of O. tuberculata inhabiting proximal beaches showed greater similarity than individuals inhabiting beaches located distant from each other. Individuals of E. analoga inhabiting similar beach types showed greater similarity than individuals living in different beach types. These results are discussed in relation to across-shore zonation and the natural history of these species.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.48 n.3 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000300007en10.4067/S0718-19572013000300007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Morphometric variability macroinfauna sandy beach
spellingShingle	Morphometric variability macroinfauna sandy beach Contreras,Heraldo Duarte,Cristian Jaramillo,Eduardo Fuentes,Norka Morphometric variability in sandy beach crustaceans of Isla Grande de Chiloé, Southern Chile
description	The macroinfauna of exposed sandy beaches along the Chilean coast is dominated by crustaceans, which show an across-shore zonation; the talitrid amphipod Orchestoidea tuberculata as the dominant taxon in the upper levels, the cirolanid isopod Excirolana hirsuticauda is dominant in the mid-intertidal, and the anomuran crab Emerita analoga is common in the low levels. This study analyses samples collected during the spring of 2001 and 7 morphological characters were measured on 30 adults of each species: body length, body height, body width, antennae and uropodal exopod lengths. The study sites were located near 42°S, an area where various beach types (i.e., reflective, intermediate and dissipative) occur along the northern coasts of the Chilean archipelagos. The morphometric variability of O. tuberculata, E. hirsuticauda and E. analoga was analyzed using cluster and principal component analysis. The results of this study showed that independently of beach type, individuals of O. tuberculata inhabiting proximal beaches showed greater similarity than individuals inhabiting beaches located distant from each other. Individuals of E. analoga inhabiting similar beach types showed greater similarity than individuals living in different beach types. These results are discussed in relation to across-shore zonation and the natural history of these species.
author	Contreras,Heraldo Duarte,Cristian Jaramillo,Eduardo Fuentes,Norka
author_facet	Contreras,Heraldo Duarte,Cristian Jaramillo,Eduardo Fuentes,Norka
author_sort	Contreras,Heraldo
title	Morphometric variability in sandy beach crustaceans of Isla Grande de Chiloé, Southern Chile
title_short	Morphometric variability in sandy beach crustaceans of Isla Grande de Chiloé, Southern Chile
title_full	Morphometric variability in sandy beach crustaceans of Isla Grande de Chiloé, Southern Chile
title_fullStr	Morphometric variability in sandy beach crustaceans of Isla Grande de Chiloé, Southern Chile
title_full_unstemmed	Morphometric variability in sandy beach crustaceans of Isla Grande de Chiloé, Southern Chile
title_sort	morphometric variability in sandy beach crustaceans of isla grande de chiloé, southern chile
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572013000300007
work_keys_str_mv	AT contrerasheraldo morphometricvariabilityinsandybeachcrustaceansofislagrandedechiloesouthernchile AT duartecristian morphometricvariabilityinsandybeachcrustaceansofislagrandedechiloesouthernchile AT jaramilloeduardo morphometricvariabilityinsandybeachcrustaceansofislagrandedechiloesouthernchile AT fuentesnorka morphometricvariabilityinsandybeachcrustaceansofislagrandedechiloesouthernchile
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Morphometric variability in sandy beach crustaceans of Isla Grande de Chiloé, Southern Chile

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