Diversidad de poliplacóforos tropicales del sur de la Provincia Panameña
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2016-09
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es
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UNIVERSIDAD CATOLICA DE VALPARAISO
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Licencia CC
Resumen
Por primera vez se hace un catastro exhaustivo sobre la diversidad de poliplacóforos en la zona sur de la Provincia Panameña (Ecuador-Perú), correspondiente a la ecorregión de Guayaquil. Se recolectaron quitones de cinco localidades y se estimó su diversidad y similitud de los ensambles. Durante invierno de 2013 y verano 2013-2014 se recolectó un total de 539 quitones pertenecientes a 11 especies. La diversidad disminuyó de norte a sur debido a un fuerte recambio de especies y la dominancia local de algunos taxa. El análisis de ordenación sugiere dos grupos faunísticos, uno compuesto por las localidades de Montañita y Santa Rosa en Ecuador, y Bonanza en Perú, y otro compuesto por las localidades peruanas de Pocitas y Lobitos. Las especies que más contribuyen a la diferenciación son Ischnochiton dispar, Acanthopleura echinata y Acanthochitona ferreirai. La diversidad de poliplacóforos en esta parte de la Provincia Panameña es pobre comparada con el mayor número de especies reportadas en Chile, México y Puerto Rico. Se sugiere que el tipo de hábitat y la oferta ambiental de alimento serían factores importantes en las diferencias en diversidad.
For the first time a comprehensive record on the diversity of polyplacophorans in the south of the Province of Panama (Ecuador-Peru), corresponding to the Guayaquil ecoregion, was made. Chitons were collected from five locations and their diversity and the similarity of the assemblies were estimated. During winter 2013 and summer 2013-2014 a total of 539 chitons belonging to 11 species were collected. The diversity decreases from north to south due to a strong replacement of species and to the local dominance of some taxa. The ordination analysis suggests two faunal groups, one composed of the locations of Montanita and Santa Rosa form Ecuador, and Bonanza from Peru, while the second is composed of the Peruvian locations of Pocitas and Lobitos. The species that contribute most to the differentiation are Ischnochiton dispar, Acanthopleura echinata and Acanthochitona ferreirai. Polyplacophorans diversity at this part of Province of Panama is poor compared to the greatest number of species reported in Chile, Mexico and Puerto Rico. It is suggested that the type of habitat and environmental food supply would be key in explaining differences in diversity.
For the first time a comprehensive record on the diversity of polyplacophorans in the south of the Province of Panama (Ecuador-Peru), corresponding to the Guayaquil ecoregion, was made. Chitons were collected from five locations and their diversity and the similarity of the assemblies were estimated. During winter 2013 and summer 2013-2014 a total of 539 chitons belonging to 11 species were collected. The diversity decreases from north to south due to a strong replacement of species and to the local dominance of some taxa. The ordination analysis suggests two faunal groups, one composed of the locations of Montanita and Santa Rosa form Ecuador, and Bonanza from Peru, while the second is composed of the Peruvian locations of Pocitas and Lobitos. The species that contribute most to the differentiation are Ischnochiton dispar, Acanthopleura echinata and Acanthochitona ferreirai. Polyplacophorans diversity at this part of Province of Panama is poor compared to the greatest number of species reported in Chile, Mexico and Puerto Rico. It is suggested that the type of habitat and environmental food supply would be key in explaining differences in diversity.
Notas
Indexación: Web of Science, Scielo.
Palabras clave
Polyplacophora, Moluscos, Diversidad, Ecuador, Perú
Citación
Lat. Am. J. Aquat. Res. vol.44 no.4 Valparaíso set. 2016